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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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A followup to "AB Landola semi-acoustic guitar electrics ,c 1960s"
Some pretty pics for a change, finished pickup rewind
With some 1960s Pekalit red bakelite and brass knobs that I happen to have a supply of, far more in keeping than the "original" ? grotty loking grey aluminium Japanese ones. http://home.graffiti.net/diverse:gra...t/landola2.jpg http://home.graffiti.net/diverse:gra...t/landola3.jpg owner agreed (before tidying away the internal wiring) I now know it is possible to remove pots and brasswork mounts through the soundhole ps there may be disallowed remote linking with this host, anyone finding that please feedback here. Seems you sometimes have to repeat attempt to access . -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#2
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A followup to "AB Landola semi-acoustic guitar electrics ,c 1960s"
Meat Plow wrote in message
... On Thu, 20 Aug 2009 10:39:06 +0100, "N_Cook" wrote: Some pretty pics for a change, finished pickup rewind With some 1960s Pekalit red bakelite and brass knobs that I happen to have a supply of, far more in keeping than the "original" ? grotty loking grey aluminium Japanese ones. http://home.graffiti.net/diverse:gra...t/landola2.jpg http://home.graffiti.net/diverse:gra...t/landola3.jpg owner agreed (before tidying away the internal wiring) I now know it is possible to remove pots and brasswork mounts through the soundhole ps there may be disallowed remote linking with this host, anyone finding that please feedback here. Seems you sometimes have to repeat attempt to access . Would have been nice to see some pictures larger than 200x200 pixels. Basics of frequency response of pickups anywhere? Using a 390uH wire-ended axial choke for injector in place of guitar string and an AF generator and comparing roughly, the frequency response. The rewind was about the same at 100Hz , less at 1KHz and more at 8 KHz Presumably more insulation on the replacement wire for less distributed C, but mid-range drop ? Can't do much about the choice of wire , so doesn't leave much to play with -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#3
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A followup to "AB Landola semi-acoustic guitar electrics ,c 1960s"
On Thu, 20 Aug 2009 17:15:31 +0100, "N_Cook" wrote:
Basics of frequency response of pickups anywhere? Pinched from the thread in sci.electronics.design Subject: Audio Circuit for *High* Output Impedance http://tinyurl.com/mdyxtz which takes you to:- http://online.physics.uiuc.edu/cours...asurements.pdf Not exactly the "basic" info perhaps. -- Geo |
#4
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A followup to "AB Landola semi-acoustic guitar electrics ,c 1960s"
Geo wrote in message
... On Thu, 20 Aug 2009 17:15:31 +0100, "N_Cook" wrote: Basics of frequency response of pickups anywhere? Pinched from the thread in sci.electronics.design Subject: Audio Circuit for *High* Output Impedance http://tinyurl.com/mdyxtz which takes you to:- http://online.physics.uiuc.edu/cours.../Electric_Guit ar_Pickup_Measurements.pdf Not exactly the "basic" info perhaps. -- Geo A good academic treatise , but I'm more interested in the practicalities. Correlation between winding weave/dimensions/ changing magnets etc for a given constraint within a particular housing and wire type, what correlation on the output frequency characteristic. |
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