|
#1
02-08-2010, 09:00 AM
|
|||
|
|||
|
Capacitor guidance
I'm replacing the blown 2 uF/50V electro cap in my SF Champ, but I'll be damned if I can find one online at all the usual places, and more! Anyone know who carries these?? Any help would be appreciated.
__________________
My band: soundcloud.com/winter-coats My guitars: MIJ '66 Jaguar, MIJ '72 Strat RI, AVRI Jazzmaster, 69 Harmony Bobcat H-17, '81 Gibson SG My amps: '75 Ampeg V-4, '80 Hiwatt Custom 100, '67 Dual Showman, '66 Bassman & 2x12 Bassman cab, '74 Vibrolux Reverb, '71 Champ, 1965 Ampeg Gemini I, 1969 Ampeg B25B, 1971 Traynor YBA-3 Custom Special, 1971 Traynor YC-810 cabinet, Avatar Vintage series 2x12 cab, Mojo 4x12 cab, Marshall 1965a 4x10 cab. 
|
|
#2
02-08-2010, 09:22 AM
|
||||
|
||||
|
I am guessing that this cap is for the second stage.
Any 2 or 2.2uf 25 to 50V will work. Here are a few places to check. www.mouser.com www.circuitspecialists.com Probably any radio shack store (they have a 4.7uf that should be fine Gary
__________________
Gary Glaswerks Amplification http://www.glaswerks.com Cynthia Johnson - Wife and Mother - 1958 to 2012
|
|
#3
02-08-2010, 09:32 AM
|
|||
|
|||
|
Hoffman carries a 2.2uF/100v electro cap. That should be close enough. Shipping will be expensive, but he gets stuff out faster than anyone. Weber also has a 2.2uF/50v electro, but I don't know if they have a minimum order. Hoffman doesn't.
|
|
#4
02-08-2010, 10:02 AM
|
|||
|
|||
|
Does the circuit actually call for that kind of voltage rating? Is the capacitor in part of the circuit that may benefit from a higher uF value anyway?
__________________
If nobody laughs at your dreams they aren't big enough :)
|
|
#5
02-08-2010, 10:10 AM
|
||||
|
||||
|
Looking at the 5F1 schematic, it looks like it is a cathode bypass on the second stage.
__________________
Gary Glaswerks Amplification http://www.glaswerks.com Cynthia Johnson - Wife and Mother - 1958 to 2012
|
|
#7
02-08-2010, 10:57 AM
|
|||
|
|||
|
Quote:
__________________
My band: soundcloud.com/winter-coats My guitars: MIJ '66 Jaguar, MIJ '72 Strat RI, AVRI Jazzmaster, 69 Harmony Bobcat H-17, '81 Gibson SG My amps: '75 Ampeg V-4, '80 Hiwatt Custom 100, '67 Dual Showman, '66 Bassman & 2x12 Bassman cab, '74 Vibrolux Reverb, '71 Champ, 1965 Ampeg Gemini I, 1969 Ampeg B25B, 1971 Traynor YBA-3 Custom Special, 1971 Traynor YC-810 cabinet, Avatar Vintage series 2x12 cab, Mojo 4x12 cab, Marshall 1965a 4x10 cab.
|
|
#8
02-08-2010, 10:58 AM
|
|||
|
|||
|
Quote:
__________________
My band: soundcloud.com/winter-coats My guitars: MIJ '66 Jaguar, MIJ '72 Strat RI, AVRI Jazzmaster, 69 Harmony Bobcat H-17, '81 Gibson SG My amps: '75 Ampeg V-4, '80 Hiwatt Custom 100, '67 Dual Showman, '66 Bassman & 2x12 Bassman cab, '74 Vibrolux Reverb, '71 Champ, 1965 Ampeg Gemini I, 1969 Ampeg B25B, 1971 Traynor YBA-3 Custom Special, 1971 Traynor YC-810 cabinet, Avatar Vintage series 2x12 cab, Mojo 4x12 cab, Marshall 1965a 4x10 cab.
|
|
#9
02-08-2010, 11:23 AM
|
|||
|
|||
|
4.7uF will work just fine.
The -3dB rolloff is well below whatever you'll be playing. 2uF....4uF....25uF......it's a fairly non-critical application. 25V is way more than sufficient.
__________________
The bus came by and I got on, that's when it all began... ++++ As per TGP Rule #8: I wind pickups for profit.
|
|
#10
02-09-2010, 08:40 AM
|
|||
|
|||
|
I agree with Mark. But 2.2uF is a closer standard value. Given the voltage that will appear across it is about 2V, I say a standard 25V capacitor ought to work like a, um, champ.
__________________
If nobody laughs at your dreams they aren't big enough :)
|
|
#11
02-09-2010, 10:24 AM
|
|||
|
|||
|
Quote:
__________________
My band: soundcloud.com/winter-coats My guitars: MIJ '66 Jaguar, MIJ '72 Strat RI, AVRI Jazzmaster, 69 Harmony Bobcat H-17, '81 Gibson SG My amps: '75 Ampeg V-4, '80 Hiwatt Custom 100, '67 Dual Showman, '66 Bassman & 2x12 Bassman cab, '74 Vibrolux Reverb, '71 Champ, 1965 Ampeg Gemini I, 1969 Ampeg B25B, 1971 Traynor YBA-3 Custom Special, 1971 Traynor YC-810 cabinet, Avatar Vintage series 2x12 cab, Mojo 4x12 cab, Marshall 1965a 4x10 cab.
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
