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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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This Behringer 215 speaker has two 1/4" phone jacks that are wired in
parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. You can see the results. I replaced the Speakon jacks, no problem. With the help of a Mouser telephone tech to match the original part, I ordered replacement 1/4" phone jacks, manufacturer part number NYS232. http://www.mouser.com/ProductDetail/...7cmiFF RuQ%3d The owner suggested I replaced both of them as long as I had it apart. The parts arrived and I installed them. I wired everything back in place. Something told me to check the input impedance of the speaker with a multimeter just to make sure it was wired probably. It was a good thing I did. It measured a direct short from the speaker plug input. After searching up and down for a short, I didn't find any until I inserted the phone plug into the jack. That's when an internal contact in the jack switched to a different position and shorted out the plug. Ok, I guess this jack will not work on this pc board. I called Behringer's parts department and had them research the original part. After a day or two of researching, I received a call back from Behringer and ordered the parts. I received the parts today. Excited to finally get the speaker repaired, I removed the Mouser jacks and put in the Behringer jacks, same thing. Direct short across the input terminals. Then I looked inside and noticed there wasn't any difference in the terminal configuration between the Mouser jack and the replacement Behringer jack. I will call Behringer back on Monday to discuss this situation but meanwhile, do any of you know what kind of 1/4" phone jack is supposed to fit on this pc board? Thanks for your reply. -- David Farber Los Osos, CA |
#2
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David Farber wrote:
This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. You can see the results. I replaced the Speakon jacks, no problem. With the help of a Mouser telephone tech to match the original part, I ordered replacement 1/4" phone jacks, manufacturer part number NYS232. http://www.mouser.com/ProductDetail/...7cmiFF RuQ%3d The owner suggested I replaced both of them as long as I had it apart. The parts arrived and I installed them. I wired everything back in place. Something told me to check the input impedance of the speaker with a multimeter just to make sure it was wired probably. It was a good thing I did. It measured a direct short from the speaker plug input. After searching up and down for a short, I didn't find any until I inserted the phone plug into the jack. That's when an internal contact in the jack switched to a different position and shorted out the plug. Ok, I guess this jack will not work on this pc board. I called Behringer's parts department and had them research the original part. After a day or two of researching, I received a call back from Behringer and ordered the parts. I received the parts today. Excited to finally get the speaker repaired, I removed the Mouser jacks and put in the Behringer jacks, same thing. Direct short across the input terminals. Then I looked inside and noticed there wasn't any difference in the terminal configuration between the Mouser jack and the replacement Behringer jack. I will call Behringer back on Monday to discuss this situation but meanwhile, do any of you know what kind of 1/4" phone jack is supposed to fit on this pc board? Thanks for your reply. Another piece of information here. If I plug in a stereo phone plug, then there is no short circuit. Is there some industry standard to use stereo phone plugs in this type of application? That seems a bit strange to me. Thanks for your reply. -- David Farber Los Osos, CA |
#3
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![]() "David Farber" This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. ** A small, long blade screwdriver does the trick - just wedge the tip between the nut and the body of the Speakon to prevent it turning. The jack sockets should be "mono" versions - stereo ones will short out as you have found. ..... Phil |
#4
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![]() "David Farber" Another piece of information here. If I plug in a stereo phone plug, then there is no short circuit. Is there some industry standard to use stereo phone plugs in this type of application? ** No way. Mono plugs are always used for speaker leads. ..... Phil |
#5
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Phil Allison wrote:
"David Farber" This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. ** A small, long blade screwdriver does the trick - just wedge the tip between the nut and the body of the Speakon to prevent it turning. The jack sockets should be "mono" versions - stereo ones will short out as you have found. .... Phil Thanks for the confirmation of the mono plug and the trick to remove the screw in the Speakon jack. -- David Farber Los Osos, CA |
#6
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On 12/01/2014 01:33, David Farber wrote:
This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. You can see the results. I replaced the Speakon jacks, no problem. With the help of a Mouser telephone tech to match the original part, I ordered replacement 1/4" phone jacks, manufacturer part number NYS232. http://www.mouser.com/ProductDetail/...7cmiFF RuQ%3d The owner suggested I replaced both of them as long as I had it apart. The parts arrived and I installed them. I wired everything back in place. Something told me to check the input impedance of the speaker with a multimeter just to make sure it was wired probably. It was a good thing I did. It measured a direct short from the speaker plug input. After searching up and down for a short, I didn't find any until I inserted the phone plug into the jack. That's when an internal contact in the jack switched to a different position and shorted out the plug. Ok, I guess this jack will not work on this pc board. I called Behringer's parts department and had them research the original part. After a day or two of researching, I received a call back from Behringer and ordered the parts. I received the parts today. Excited to finally get the speaker repaired, I removed the Mouser jacks and put in the Behringer jacks, same thing. Direct short across the input terminals. Then I looked inside and noticed there wasn't any difference in the terminal configuration between the Mouser jack and the replacement Behringer jack. I will call Behringer back on Monday to discuss this situation but meanwhile, do any of you know what kind of 1/4" phone jack is supposed to fit on this pc board? Thanks for your reply. Just a thought, are the outputs in antiphase and just one of them is exhibiting this "fault" if you check to chassis ground? |
#7
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It's amazing Fran Allyson didn't jump all over you.
The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. |
#8
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William Sommerwerck wrote:
It's amazing Fran Allyson didn't jump all over you. The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? Thanks for your reply. -- David Farber Los Osos, CA |
#9
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N_Cook wrote:
On 12/01/2014 01:33, David Farber wrote: This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. You can see the results. I replaced the Speakon jacks, no problem. With the help of a Mouser telephone tech to match the original part, I ordered replacement 1/4" phone jacks, manufacturer part number NYS232. http://www.mouser.com/ProductDetail/...7cmiFF RuQ%3d The owner suggested I replaced both of them as long as I had it apart. The parts arrived and I installed them. I wired everything back in place. Something told me to check the input impedance of the speaker with a multimeter just to make sure it was wired probably. It was a good thing I did. It measured a direct short from the speaker plug input. After searching up and down for a short, I didn't find any until I inserted the phone plug into the jack. That's when an internal contact in the jack switched to a different position and shorted out the plug. Ok, I guess this jack will not work on this pc board. I called Behringer's parts department and had them research the original part. After a day or two of researching, I received a call back from Behringer and ordered the parts. I received the parts today. Excited to finally get the speaker repaired, I removed the Mouser jacks and put in the Behringer jacks, same thing. Direct short across the input terminals. Then I looked inside and noticed there wasn't any difference in the terminal configuration between the Mouser jack and the replacement Behringer jack. I will call Behringer back on Monday to discuss this situation but meanwhile, do any of you know what kind of 1/4" phone jack is supposed to fit on this pc board? Thanks for your reply. Just a thought, are the outputs in antiphase and just one of them is exhibiting this "fault" if you check to chassis ground? I'm not sure what you mean by outputs. Do you mean the amplifier outputs? I have not connected it to any amplifier as of yet. I'm just measuring the dc resistance of the speaker at the input jack. Thanks for your reply. -- David Farber Los Osos, CA |
#10
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"David Farber" wrote in message ...
William Sommerwerck wrote: The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? ------------------------------------------------- As far as I can tell, this isn't a speaker input -- it's a balanced amplifier input. There is no reason why a mono plug or stereo plug should show a short. Your description of what's going on seems inconsistent and confused. |
#11
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William Sommerwerck wrote:
"David Farber" wrote in message ... William Sommerwerck wrote: The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? ------------------------------------------------- As far as I can tell, this isn't a speaker input -- it's a balanced amplifier input. There is no reason why a mono plug or stereo plug should show a short. Your description of what's going on seems inconsistent and confused. Hi William, The are two Speakon and two 1/4" phone jacks wired in parallel that are situated in the back of the speaker cabinet. It's not a powered speaker. The inside of the speaker cabinet contains a crossover pc board, a woofer, and a midrange speaker. When I replaced the damaged 1/4" phone jack and checked continuity across the pc board input with the speakers disconnected, it measured open circuit. When I put a monaural phone plug into the jack, I rechecked the continuity and it was shorted. The monaural phone plug was not connected to anything on the other end so the short had to becoming from the jack itself. Does that make sense? -- David Farber Los Osos, CA |
#12
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![]() "William Sommerwerck" wrote in message ... "David Farber" wrote in message ... William Sommerwerck wrote: The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? ------------------------------------------------- As far as I can tell, this isn't a speaker input -- it's a balanced amplifier input. There is no reason why a mono plug or stereo plug should show a short. Your description of what's going on seems inconsistent and confused. William, why do you keep doing this? If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. David, my usual technique where the original socket cannot easily be replaced is to simply use a chassis mounted switched jack socket hard wired to the PCB, if space allows it, after carefully working out what connections to connect to where. Gareth. |
#13
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Gareth Magennis wrote:
"William Sommerwerck" wrote in message ... "David Farber" wrote in message ... William Sommerwerck wrote: The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? ------------------------------------------------- As far as I can tell, this isn't a speaker input -- it's a balanced amplifier input. There is no reason why a mono plug or stereo plug should show a short. Your description of what's going on seems inconsistent and confused. William, why do you keep doing this? If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. David, my usual technique where the original socket cannot easily be replaced is to simply use a chassis mounted switched jack socket hard wired to the PCB, if space allows it, after carefully working out what connections to connect to where. Gareth. Hi Gareth, There is lots of space to drill a new hole and mount another jack. Then it doesn't have to fit the pc board directly. Why would it have to be a switched jack? What would it be switching? Thanks for your reply. -- David Farber Los Osos, CA |
#14
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![]() "David Farber" wrote in message ... Gareth Magennis wrote: "William Sommerwerck" wrote in message ... "David Farber" wrote in message ... William Sommerwerck wrote: The 1/4" phone jack is (supposedly) a balanced line-level input. If you plug a mono plug into it, the plug's sleeve will short the jack's ring to ground. This is normal; there's nothing inherently wrong with this. It's one way unbalanced signals can be connected to balanced inputs. http://www.behringer.com/EN/Products/B215.aspx I suspect you have a problem that isn't really a problem. Hi William, I think if you take an ohmmeter and connect it to a speaker input, and it measures the lowest reading that it can display, that would be cause for concern. The only time this happens is when the stereo plug is inserted into the jack even when the plug isn't connected to anything. How do you perceive that this isn't a problem? ------------------------------------------------- As far as I can tell, this isn't a speaker input -- it's a balanced amplifier input. There is no reason why a mono plug or stereo plug should show a short. Your description of what's going on seems inconsistent and confused. William, why do you keep doing this? If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. David, my usual technique where the original socket cannot easily be replaced is to simply use a chassis mounted switched jack socket hard wired to the PCB, if space allows it, after carefully working out what connections to connect to where. Gareth. Hi Gareth, There is lots of space to drill a new hole and mount another jack. Then it doesn't have to fit the pc board directly. Why would it have to be a switched jack? What would it be switching? Thanks for your reply. -- David Farber Los Osos, CA A switched jack will just cover all possibilities. You can use the switching or ignore it, the cost is pretty much the same. I can't see how a switched jack might be used in this unit, but nor can I see how inserting a mono jack plug into the replacement socket can cause a short, so something in the wiring is amiss. You might not need to drill a new hole, you may be able to fit the chassis mounting socket in the original hole, and just run wires from it to the PCB. Hot melt glue or silicone sealant will secure and insulate it. Gareth. |
#15
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On 01/11/2014 05:33 PM, David Farber wrote:
This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg The Speakon jacks were fastened to the back panel of the cabinet with two screws per jack. On the other end of the screw was a nut. Unfortunately, the nut wasn't anchored to anything so it was futile to try and remove the screw. The circuit board prevented me from inserting any tool in there to hold the nut while I was turning the screw. You can see the results. I replaced the Speakon jacks, no problem. With the help of a Mouser telephone tech to match the original part, I ordered replacement 1/4" phone jacks, manufacturer part number NYS232. http://www.mouser.com/ProductDetail/...7cmiFF RuQ%3d The owner suggested I replaced both of them as long as I had it apart. The parts arrived and I installed them. I wired everything back in place. Something told me to check the input impedance of the speaker with a multimeter just to make sure it was wired probably. It was a good thing I did. It measured a direct short from the speaker plug input. After searching up and down for a short, I didn't find any until I inserted the phone plug into the jack. That's when an internal contact in the jack switched to a different position and shorted out the plug. Ok, I guess this jack will not work on this pc board. I called Behringer's parts department and had them research the original part. After a day or two of researching, I received a call back from Behringer and ordered the parts. I received the parts today. Excited to finally get the speaker repaired, I removed the Mouser jacks and put in the Behringer jacks, same thing. Direct short across the input terminals. Then I looked inside and noticed there wasn't any difference in the terminal configuration between the Mouser jack and the replacement Behringer jack. I will call Behringer back on Monday to discuss this situation but meanwhile, do any of you know what kind of 1/4" phone jack is supposed to fit on this pc board? Thanks for your reply. Tell Del Hopkins I said "hi". Thanks. |
#16
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![]() "Gareth Magennis" William, why do you keep doing this? ** The Sommer****** fails to read his own words, let alone other's. If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. ** The heading alone makes that clear. Then the pic backs it up. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. ** But Speakons do it way better and are not prone to shorting. Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. ** Yep - it a stereo jack with the ring contact wired to the tip contact via the PCB. .... Phil |
#17
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"Gareth Magennis" wrote in message news
![]() William, why do you keep doing this? Do what? If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. I did do my research properly, because I knew I would be subjected to this crap. Did you look at the B215 link I supplied? The B215 is A POWERED SPEAKER, and the 1/4" phone jack is a balanced input. READ WHAT IT SAYS on the Details tab. If there's something wrong, it's with Berenger's product sheet -- not my ability to read or understand it. Or perhaps David Farber gave the wrong model number. This might very well be the case, because the drawing doesn't show a Speakon connection. I normally don't ask for apologies -- but in this case, I'll make an exception. Someone owes me an apology. Don't tell me I don't know how to interpret a product sheet. |
#18
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"Phil Allison" wrote in message ...
Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. ** Yep -- it's a stereo jack with the ring contact wired to the tip contact via the PCB. Now, why would any manufacturer in its right mind wire a stereo jack -- input or output -- in such a way that inserting a mono plug would short out the signal? Oh, wait -- it's Behringer. |
#19
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![]() "William Sommer******" I did do my research properly, because I knew I would be subjected to this crap. Did you look at the B215 link I supplied? The B215 is A POWERED SPEAKER, and the 1/4" phone jack is a balanced input. READ WHAT IT SAYS on the Details tab. ** The B215 is a passive speaker - as stated at the top of the first page of the link. http://www.behringer.com/EN/Products/B215.aspx Says: " * 2 professional speaker connectors (compatible with Neutrik Speakon connectors) plus ¼'' jack connectors." The "details" tab give you a different model - the B215D which incorporates a class D amplifier. The OP made it VERY clear which model he was on about. ..... Phil |
#20
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![]() "William Sommer****** SNIPPING MANIAC " "Phil Allison" Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. ** Yep -- it's a stereo jack with the ring contact wired to the tip contact via the PCB. Now, why would any manufacturer in its right mind wire a stereo jack ** But no manufacturer did. The OP did that himself when he fitted the wrong part. Which is obvious if you read the ****ing post un SNIPPED !!!!!!!!!! ..... Phil |
#21
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![]() "Phil Allison" wrote in message ... "Gareth Magennis" William, why do you keep doing this? ** The Sommer****** fails to read his own words, let alone other's. If you had bothered to do your research properly you will have discovered that the Behringer B215 is a loudspeaker. ** The heading alone makes that clear. Then the pic backs it up. It has no internal amplifiers, the jack sockets are simply in parallel with the Speakon sockets and do exactly the same job. ** But Speakons do it way better and are not prone to shorting. Clearly there is a problem with the replacement jack socket that seems to provide a short with a mono jack plug inserted in it. ** Yep - it a stereo jack with the ring contact wired to the tip contact via the PCB. ... Phil It may be easiest in this case to use this "wrong" socket by modifying the PCB traces, thus retaining the mounting between PCB and backplate and having an easily replaceable part in the future. It is not uncommon now to find chinese manufactured parts that look very similar to off the shelf western parts but having different pinouts. I seem to remember our Mr Cook reporting something along these lines here a while ago (TRS = RTS?) One I saw recently was a PCB mount switched jack socket where the switched terminals were on the opposite side of the socket to just about every other switched jack socket in existance, so the switching action would not work with a generic replacement, even though it fitted perfectly. (this was either a Laney or Crate guitar combo) Seems this may be the case here. Gareth. |
#22
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![]() "Gareth Magennis" One I saw recently was a PCB mount switched jack socket where the switched terminals were on the opposite side of the socket to just about every other switched jack socket in existance, so the switching action would not work with a generic replacement, even though it fitted perfectly. (this was either a Laney or Crate guitar combo) ** Seen the exact same thing myself. Luckily, it was possible to remove the metal parts from the socket and reverse them. Seems both Re-An and Cliff can supply mirror image versions - if you want them. Gotta be smarter then the "average bear" if repairs are you game ..... .... Phil |
#23
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"June Allyson" wrote in message ...
I did do my research properly, because I knew I would be subjected to this crap. Did you look at the B215 link I supplied? The B215 is A POWERED SPEAKER, and the 1/4" phone jack is a balanced input. READ WHAT IT SAYS on the Details tab. ** The B215 is a passive speaker -- as stated at the top of the first page of the link. http://www.behringer.com/EN/Products/B215.aspx Says: " * 2 professional speaker connectors (compatible with Neutrik Speakon connectors) plus ¼'' jack connectors." The "details" tab give you a different model -- the B215D which incorporates a class D amplifier. The OP made it VERY clear which model he was on about. Maybe. You will perhaps forgive me for making the not-unreasonable assumption that a product sheet is supposed to be about one product, not two. (Yes, I saw the B215D model number on the Details page.) I'm still wondering why any company would use a stereo connector for a mono circuit -- but who said the world is rational? |
#24
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![]() "David Farber" wrote in message ... This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg David, I have just found a switched jack socket in my workshop similar to the Switchcraft style ones in your photo. Looking at the left PCB print in your photo, the one I have here connects the jack centre pin to the "12 O'clock" contact and the jack ground to the "7 O'clock contact. However, inserting the jack also connects the jack ground to the "3 O'clock" contact, meaning jack centre pin and ground are shorted together since the PCB has 12 O'clock and 3 O'clock positions shorted. Remove this shorting on the PCB and your socket will probably work OK. Alternatively, just remove the 3 Oclock pin from the socket, though the first method is much safer and more sensible. Cheers, Gareth. |
#25
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Posted to sci.electronics.repair
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Gareth Magennis wrote:
"David Farber" wrote in message ... This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg David, I have just found a switched jack socket in my workshop similar to the Switchcraft style ones in your photo. Looking at the left PCB print in your photo, the one I have here connects the jack centre pin to the "12 O'clock" contact and the jack ground to the "7 O'clock contact. However, inserting the jack also connects the jack ground to the "3 O'clock" contact, meaning jack centre pin and ground are shorted together since the PCB has 12 O'clock and 3 O'clock positions shorted. Remove this shorting on the PCB and your socket will probably work OK. Alternatively, just remove the 3 Oclock pin from the socket, though the first method is much safer and more sensible. Cheers, Gareth. Hi Gareth, I called Behringer parts back this morning and told them I received the wrong parts and why they were the wrong parts. I got a call back after some research was done and they are shipping me the correct parts this time. They can't mess this order up twice, can they? (-: The pc board is multi-layered so I really don't want to mess with that. Let's see if the replacement parts are the correct ones. Thanks for your reply. -- David Farber Los Osos, CA |
#26
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David Farber wrote:
Gareth Magennis wrote: "David Farber" wrote in message ... This Behringer 215 speaker has two 1/4" phone jacks that are wired in parallel. It also has two Speakon jacks wired in parallel to facilitate adding extra speakers to the system. The unit came to me with one broken 1/4" phone jack. The picture of the pc board is here. http://webpages.charter.net/mrfixite...r/pc-board.jpg David, I have just found a switched jack socket in my workshop similar to the Switchcraft style ones in your photo. Looking at the left PCB print in your photo, the one I have here connects the jack centre pin to the "12 O'clock" contact and the jack ground to the "7 O'clock contact. However, inserting the jack also connects the jack ground to the "3 O'clock" contact, meaning jack centre pin and ground are shorted together since the PCB has 12 O'clock and 3 O'clock positions shorted. Remove this shorting on the PCB and your socket will probably work OK. Alternatively, just remove the 3 Oclock pin from the socket, though the first method is much safer and more sensible. Cheers, Gareth. Hi Gareth, I called Behringer parts back this morning and told them I received the wrong parts and why they were the wrong parts. I got a call back after some research was done and they are shipping me the correct parts this time. They can't mess this order up twice, can they? (-: The pc board is multi-layered so I really don't want to mess with that. Let's see if the replacement parts are the correct ones. I received the new jacks and they were the correct ones. The speaker works fine now. I did notice one strange thing about the midrange driver. When I went to push the connectors onto the terminal block, the driver started to rotate in its mount. I didn't see any mounting screws that would hold it securely in place. This can't be normal can it? Thanks for your reply. -- David Farber Los Osos, CA |
#27
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Posted to sci.electronics.repair
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On Monday, January 20, 2014 10:35:06 AM UTC-7, David Farber wrote:
David Farber wrote: I received the new jacks and they were the correct ones. The speaker works fine now. I did notice one strange thing about the midrange driver. When I went to push the connectors onto the terminal block, the driver started to rotate in its mount. I didn't see any mounting screws that would hold it securely in place. This can't be normal can it? In my experience with Behringer, having anything of theirs operate correctly for an expected period of time is abnormal. I am not surprised they sent you the wrong part, I am surprised you apparently spoke with a live human on-shore about it. Yours truly, Mr. Klay Anderson, D.A.,Q.B.E. |
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