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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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I have a Siemens A56i cell phone for which I would like to get a
headset. Unfortunately, the phone has a bizarre proprietary plug, not the "universal" 2.5mm kind, and the only headsets available with the plug are those miserable in the ear "earbud" kind, which in my experience fall out constantly. SOOOOO, I plan to buy a cheap generic earbud with the Siemens plug (available for around $6 online), cut the plug off & either graft it onto a 2.5mm headset or make an adapter with the cutoff seimens male plug and a 2.5mm female inline socket. I'm assuming the 2.5mm plugs on these cell headsets are the same 3 conductor type as used in general audio, no? A common for the mic/spkr then a hot for each? Seems straightforward enough. Finally, can anyone suggest an especially good headset? On all the one's I've had experience with, either YOU can't hear THEM, or THEY can't hear YOU, or the damn thing's uncomfortable as all get out, or ALL 3!!! Any specific make/model suggestions appreciated. Dan |
#2
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I cannot believe that Seimens does not have a descent earpiece system for
their phones. I have seen this one, and it is very good. http://reviews.cnet.com/Siemens_PTT_...-30547985.html No wires, and it is neat to use. Check out if it will work with your model of phone. If you decide to do this modification: You may find that some of these earpiece systems do not use standard copper wire. They may use a specially metallic flexible wire. This type of wire cannot be soldered. They use a special type of braising and crimp system to join and attach their wires. All of these types of earphones are non-serviceable. When you do this adaptation (if applicable), as for the wiring, make sure you do the proper soldering job, and with a good quality heat shrink wire tubing. You don't want to make yourself a mess with black tape and crap like that. You would have to cut the wires from an original Siemens headset, and measure the headphone unit with an ohm meter. From this you should be able to determine the earpiece providing that there is no amplifier chip internal to it. The microphone will most likely be an electrets type microphone. You may run in to some problems in the way that the earphone may have an internal amplifier that has to match to the Siemens phone. There may be some impedance matching problems, and also problems in properly matching up the microphone. When working on this little project, you must take care to not short out anything, or have any static electricity present. The earpiece port on your phone is very sensitive to this. I would guess you went around to a number of places that sell the optional accessories for your type of phone. I am sure that there must be a large variety of OEM options that you can have. This is a very large market. As for myself, I have the Motorola earpiece that has an adjustable ear-holder that is part of it. This is a type of strong plastic ear-loop that goes over the top of my ear, and holds the earpiece to my ear. The microphone is attached to the base of it, and extends out. For this to fall off, it would almost have to take my ear with it. I also found the sound to be of good quality, and the earpiece is very comfortable. I may have paid about $45 US or so for it. It is one of the best I have seen so far. This one was made for Motorola by a company called Telex. You can also get in touch with them to find out what they have that can work your phone, if this is possible for them to do. I can see from the Siemens site, that they don't offer much in the way of variety for headsets. But, their quality is supposed to be outstanding. Siemens Earphone For Phones: http://communications.siemens.com/cd...html# content http://communications.siemens.com/cd...rNrNrN,00.html An interesting question is why didn't you get a Motorola, or Sony, or some other make of phone that has descent, or universal type compatibility to the rest of the world for accessories? With my Motorola phones, I can go almost anywhere and buy many types of accessories and add-ons that I would want. We have 4 Motorola phones in our family. We also have one AudioVox phone as well, and its earphones are compatible to the Motorola's earpiece. -- Jerry G. ===== "Dan" wrote in message ... I have a Siemens A56i cell phone for which I would like to get a headset. Unfortunately, the phone has a bizarre proprietary plug, not the "universal" 2.5mm kind, and the only headsets available with the plug are those miserable in the ear "earbud" kind, which in my experience fall out constantly. SOOOOO, I plan to buy a cheap generic earbud with the Siemens plug (available for around $6 online), cut the plug off & either graft it onto a 2.5mm headset or make an adapter with the cutoff seimens male plug and a 2.5mm female inline socket. I'm assuming the 2.5mm plugs on these cell headsets are the same 3 conductor type as used in general audio, no? A common for the mic/spkr then a hot for each? Seems straightforward enough. Finally, can anyone suggest an especially good headset? On all the one's I've had experience with, either YOU can't hear THEM, or THEY can't hear YOU, or the damn thing's uncomfortable as all get out, or ALL 3!!! Any specific make/model suggestions appreciated. Dan |
#3
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Jerry-Thanks for the reply. I do have the tools/skills to do a proper
job. I don't believe this model is bluetooth compatible. Long story, but I didn't pick out the phones (my wife has one too), unfortunately. I think it's the "bottom of the line". Do you happen to know the exact model of your Motorola headset? My wife actually got a no-name Chinese headset for her a56i on Ebay that had the right plug & the loop around the ear, it actually performed fairy well but the GD wire & plug were so flimsy it broke within a month. If I could get one that was more than an earbud & did the job I'd pay 40 bucks for it, but nothing seems to be available. Oh well, not the 1st time I had to do something myself to get it done right... Dan Jerry G. wrote: I cannot believe that Seimens does not have a descent earpiece system for their phones. I have seen this one, and it is very good. http://reviews.cnet.com/Siemens_PTT_...-30547985.html No wires, and it is neat to use. Check out if it will work with your model of phone. If you decide to do this modification: You may find that some of these earpiece systems do not use standard copper wire. They may use a specially metallic flexible wire. This type of wire cannot be soldered. They use a special type of braising and crimp system to join and attach their wires. All of these types of earphones are non-serviceable. When you do this adaptation (if applicable), as for the wiring, make sure you do the proper soldering job, and with a good quality heat shrink wire tubing. You don't want to make yourself a mess with black tape and crap like that. You would have to cut the wires from an original Siemens headset, and measure the headphone unit with an ohm meter. From this you should be able to determine the earpiece providing that there is no amplifier chip internal to it. The microphone will most likely be an electrets type microphone. You may run in to some problems in the way that the earphone may have an internal amplifier that has to match to the Siemens phone. There may be some impedance matching problems, and also problems in properly matching up the microphone. When working on this little project, you must take care to not short out anything, or have any static electricity present. The earpiece port on your phone is very sensitive to this. I would guess you went around to a number of places that sell the optional accessories for your type of phone. I am sure that there must be a large variety of OEM options that you can have. This is a very large market. As for myself, I have the Motorola earpiece that has an adjustable ear-holder that is part of it. This is a type of strong plastic ear-loop that goes over the top of my ear, and holds the earpiece to my ear. The microphone is attached to the base of it, and extends out. For this to fall off, it would almost have to take my ear with it. I also found the sound to be of good quality, and the earpiece is very comfortable. I may have paid about $45 US or so for it. It is one of the best I have seen so far. This one was made for Motorola by a company called Telex. You can also get in touch with them to find out what they have that can work your phone, if this is possible for them to do. I can see from the Siemens site, that they don't offer much in the way of variety for headsets. But, their quality is supposed to be outstanding. Siemens Earphone For Phones: http://communications.siemens.com/cd...html# content http://communications.siemens.com/cd...rNrNrN,00.html An interesting question is why didn't you get a Motorola, or Sony, or some other make of phone that has descent, or universal type compatibility to the rest of the world for accessories? With my Motorola phones, I can go almost anywhere and buy many types of accessories and add-ons that I would want. We have 4 Motorola phones in our family. We also have one AudioVox phone as well, and its earphones are compatible to the Motorola's earpiece. |
#4
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Personally I think the best accessories come from the Handset
manufacturer themselves. The ones you might find at your service provider's retail stores are often chinese knockoffs Jerry is pointing you in the right direction, right towards the manufacturer's site.. Albeit they may appear a bit more expensive, if ya want it to last, at least ya know if they are willing to put their name on the accessory, it's been run through the ringer so to speak. |
#5
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Tom-As I said it's not the price, it's the design. I can't stand the
"earbud" type, which is all Seimens offers for this bottom-feeder phone. I did find someone on ebay who has an adapter for about $6. For the money it's not worth screwing around patching. I'll probably get a couple of those and a couple Plantronics headsets with 2.5mm plugs. They make one with a full size mic boom (so the mic can be at least somewhat omnidirectional and not pick up everything in the room-hopefully) and a removable headband. Should also work with our cordless phones. Thanks for the replies. Dan majortom wrote: Personally I think the best accessories come from the Handset manufacturer themselves. The ones you might find at your service provider's retail stores are often chinese knockoffs Jerry is pointing you in the right direction, right towards the manufacturer's site.. Albeit they may appear a bit more expensive, if ya want it to last, at least ya know if they are willing to put their name on the accessory, it's been run through the ringer so to speak. |
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