A12
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- Rev 1.7 instructions are up
by tpryan » Wed Jan 14, 2009 11:49 am - 2 Replies
- 4684 Views
- Last post by radrobot
Sun Mar 29, 2009 5:14 pm
- Rev 1.7 instructions are up
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- Topics
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- Output transformer spacers
by mrgrateful » Thu Mar 24, 2011 1:57 am - 1 Replies
- 1117 Views
- Last post by tpryan
Thu Mar 24, 2011 2:15 pm
- Output transformer spacers
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- Strange Sound on Last 2 Gain Settings
by Black Magic » Wed Feb 16, 2011 9:21 pm - 5 Replies
- 2133 Views
- Last post by Black Magic
Wed Feb 23, 2011 7:07 pm
- Strange Sound on Last 2 Gain Settings
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- Possible wrong part for Trimmer Potentionmeter - A12
by jimbo2k » Mon Jan 24, 2011 8:29 am - 2 Replies
- 1494 Views
- Last post by jimbo2k
Mon Jan 24, 2011 12:04 pm
- Possible wrong part for Trimmer Potentionmeter - A12
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- A12 output control not working
by Bryce » Wed Jan 19, 2011 1:00 pm - 1 Replies
- 1212 Views
- Last post by tpryan
Fri Jan 21, 2011 3:25 pm
- A12 output control not working
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- A12 v1.4 i got used doesn't seem to work...
by scottwilson » Sat Dec 18, 2010 7:49 pm - 1 Replies
- 1210 Views
- Last post by tpryan
Mon Dec 27, 2010 3:39 pm
- A12 v1.4 i got used doesn't seem to work...
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- barely passing signal, distorted when cranked
by Arnaeve » Mon Dec 20, 2010 10:34 pm - 1 Replies
- 1211 Views
- Last post by tpryan
Mon Dec 27, 2010 3:38 pm
- barely passing signal, distorted when cranked
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- A12 Calibration Question
by GabeWax » Sat Dec 25, 2010 10:41 am - 1 Replies
- 1186 Views
- Last post by tpryan
Mon Dec 27, 2010 3:36 pm
- A12 Calibration Question
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- Is A12 supposed to sound like this? Audio clip inside
by brad347 » Wed Dec 15, 2010 2:58 pm - 0 Replies
- 2031 Views
- Last post by brad347
Wed Dec 15, 2010 2:58 pm
- Is A12 supposed to sound like this? Audio clip inside
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- Puzzling issue w/ an A12 that used to work properly *solved*
by brad347 » Sat Dec 04, 2010 12:01 pm - 1 Replies
- 1221 Views
- Last post by brad347
Tue Dec 14, 2010 2:29 pm
- Puzzling issue w/ an A12 that used to work properly *solved*
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- SC25 Opt Amp Biasing
by jason baliban » Fri Dec 10, 2010 10:02 pm - 1 Replies
- 1231 Views
- Last post by jason baliban
Mon Dec 13, 2010 6:30 pm
- SC25 Opt Amp Biasing
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- Finished my first A12
by jmettam » Tue Nov 16, 2010 8:41 am - 1 Replies
- 1337 Views
- Last post by jmettam
Sun Dec 12, 2010 5:24 pm
- Finished my first A12
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- A12 U1 polarity
by derxbrax » Fri Oct 15, 2010 9:12 pm - 8 Replies
- 2067 Views
- Last post by tpryan
Fri Nov 26, 2010 4:38 pm
- A12 U1 polarity
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- Hot opamps, high neg current draw
by rtroast » Tue Sep 28, 2010 9:13 am - 7 Replies
- 2240 Views
- Last post by tpryan
Tue Nov 16, 2010 2:31 pm
- Hot opamps, high neg current draw
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- Cinemag CMOQ-2S Loose parts?
by jmettam » Sun Nov 14, 2010 5:15 am - 1 Replies
- 1615 Views
- Last post by jmettam
Sun Nov 14, 2010 6:52 am
- Cinemag CMOQ-2S Loose parts?
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- A12 Issue: Low gain and only high frequencies
by trevor » Sat Jun 19, 2010 10:08 pm - 11 Replies
- 2658 Views
- Last post by DaveR
Wed Sep 29, 2010 3:06 pm
- A12 Issue: Low gain and only high frequencies
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- A12 & N72 Shootout?
by alvagoldbook » Mon Jul 26, 2010 9:34 am - 2 Replies
- 1804 Views
- Last post by lynyrd
Thu Sep 23, 2010 10:08 am
- A12 & N72 Shootout?
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- a12, distortion and noise
by guitarguy1555 » Sat Aug 28, 2010 11:23 pm - 1 Replies
- 1267 Views
- Last post by tpryan
Wed Sep 15, 2010 3:01 pm
- a12, distortion and noise
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- A12 Transformer alternatives
by Old Troll » Mon Aug 23, 2010 9:03 am - 3 Replies
- 3472 Views
- Last post by Old Troll
Fri Aug 27, 2010 8:29 am
- A12 Transformer alternatives
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- Just built my 2nd A12 and it works great
by ffarrell » Tue Aug 10, 2010 8:11 pm - 1 Replies
- 1175 Views
- Last post by tpryan
Wed Aug 11, 2010 6:11 am
- Just built my 2nd A12 and it works great
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- Squealing and moaning A12
by cAPSLOCK » Fri Aug 06, 2010 2:38 am - 6 Replies
- 1971 Views
- Last post by tpryan
Wed Aug 11, 2010 6:08 am
- Squealing and moaning A12
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- Reversed polarity on C13- problems
by mikea12 » Tue Jul 20, 2010 10:23 pm - 5 Replies
- 1655 Views
- Last post by tpryan
Fri Jul 23, 2010 8:00 am
- Reversed polarity on C13- problems
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- Intermittent A12 and a Quiet A12
by room4studios » Mon Jun 28, 2010 2:48 am - 5 Replies
- 2263 Views
- Last post by room4studios
Tue Jul 06, 2010 9:17 am
- Intermittent A12 and a Quiet A12
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- Output transformer wires crossed over
by room4studios » Fri Jun 25, 2010 1:37 pm - 1 Replies
- 988 Views
- Last post by tpryan
Fri Jun 25, 2010 4:54 pm
- Output transformer wires crossed over
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- Forgot the Grey Fish Paper A12
by room4studios » Mon Jun 14, 2010 12:29 pm - 2 Replies
- 1646 Views
- Last post by Todzilla
Thu Jun 17, 2010 10:45 am
- Forgot the Grey Fish Paper A12
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- SC10
by room4studios » Thu Jun 17, 2010 2:12 am - 1 Replies
- 1376 Views
- Last post by tpryan
Thu Jun 17, 2010 7:28 am
- SC10
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- A12 Few questions...
by room4studios » Tue Jun 15, 2010 12:03 pm - 2 Replies
- 1294 Views
- Last post by room4studios
Wed Jun 16, 2010 11:12 am
- A12 Few questions...
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- Install SC25
by adrianloera » Sat Jun 05, 2010 2:49 pm - 2 Replies
- 1283 Views
- Last post by tpryan
Sun Jun 06, 2010 9:27 pm
- Install SC25
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- incompatibility issues when mixing V1.4 and V1.6.1 ?
by limey222 » Wed May 26, 2010 1:03 pm - 4 Replies
- 1328 Views
- Last post by tpryan
Thu May 27, 2010 8:08 am
- incompatibility issues when mixing V1.4 and V1.6.1 ?
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- Heatsink screw orientation - important?
by shane » Tue May 18, 2010 5:28 pm - 3 Replies
- 1341 Views
- Last post by shane
Tue May 18, 2010 8:46 pm
- Heatsink screw orientation - important?
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- High noise floor & low gain on one A12
by Jezza » Sun May 16, 2010 12:25 am - 6 Replies
- 1777 Views
- Last post by Jezza
Mon May 17, 2010 6:13 pm
- High noise floor & low gain on one A12
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- Designing an output pad for the A12
by RalphNicastro » Fri Apr 16, 2010 10:43 am - 5 Replies
- 1899 Views
- Last post by RalphNicastro
Mon May 03, 2010 1:49 pm
- Designing an output pad for the A12
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- c4 and c5 tantalums
by chriscavell » Sun Apr 25, 2010 5:30 am - 2 Replies
- 1284 Views
- Last post by chriscavell
Mon Apr 26, 2010 3:19 pm
- c4 and c5 tantalums
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- A12 Accidentally reverse c13 !!!
by the3030club » Sun Dec 13, 2009 2:26 pm - 5 Replies
- 2034 Views
- Last post by tpryan
Wed Mar 17, 2010 2:29 pm
- A12 Accidentally reverse c13 !!!
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- can only get r25 and r29 up to 11 volts
by Arnaeve » Sun Mar 14, 2010 6:29 pm - 1 Replies
- 889 Views
- Last post by Arnaeve
Sun Mar 14, 2010 7:04 pm
- can only get r25 and r29 up to 11 volts
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- getting resistance of 6.9 on pins 1 and 2 of j7
by Arnaeve » Sat Mar 13, 2010 8:32 pm - 1 Replies
- 895 Views
- Last post by tpryan
Sun Mar 14, 2010 11:08 am
- getting resistance of 6.9 on pins 1 and 2 of j7
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- Rev 1.6 and 1.7 differences?
by pedalboy » Thu Mar 04, 2010 6:21 pm - 1 Replies
- 1102 Views
- Last post by tpryan
Fri Mar 05, 2010 12:52 pm
- Rev 1.6 and 1.7 differences?
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- 2 A12's 1 not making strange noises
by daveseviltwin » Thu Feb 25, 2010 1:52 pm - 7 Replies
- 1983 Views
- Last post by daveseviltwin
Tue Mar 02, 2010 6:02 pm
- 2 A12's 1 not making strange noises
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- update
by daveseviltwin » Tue Mar 02, 2010 2:38 pm - 0 Replies
- 1149 Views
- Last post by daveseviltwin
Tue Mar 02, 2010 2:38 pm
- update
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- older A12 too hot output
by LamontGrady » Sun Feb 28, 2010 11:14 am - 3 Replies
- 1401 Views
- Last post by tpryan
Mon Mar 01, 2010 6:10 pm
- older A12 too hot output
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- A12 intermittent
by packagebear » Mon Feb 01, 2010 12:12 pm - 2 Replies
- 1252 Views
- Last post by packagebear
Wed Feb 10, 2010 7:43 pm
- A12 intermittent
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- Help any Houston area A12's?
by crashandbash » Thu Feb 04, 2010 11:18 am - 0 Replies
- 1103 Views
- Last post by crashandbash
Thu Feb 04, 2010 11:18 am
- Help any Houston area A12's?
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- U1: Pin4 - Pin6 measuring weird voltage
by hduncan » Wed Jan 06, 2010 5:51 pm - 4 Replies
- 1945 Views
- Last post by tpryan
Wed Jan 06, 2010 8:27 pm
- U1: Pin4 - Pin6 measuring weird voltage
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- A12 V 1.4. No Phantom
by Bmushal » Sun Sep 27, 2009 7:05 pm - 2 Replies
- 1278 Views
- Last post by Bmushal
Mon Sep 28, 2009 10:58 am
- A12 V 1.4. No Phantom
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- Two A12's not working...PLEASE HELP!!!
by jamesbryant » Fri Sep 25, 2009 7:09 pm - 2 Replies
- 1349 Views
- Last post by tpryan
Mon Sep 28, 2009 10:29 am
- Two A12's not working...PLEASE HELP!!!
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- A12 quit working after 6 months
by budger » Tue Sep 22, 2009 8:05 am - 2 Replies
- 1533 Views
- Last post by budger
Sun Sep 27, 2009 8:44 am
- A12 quit working after 6 months
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- IC Op-Amp questions.
by kevink » Fri Sep 18, 2009 2:18 pm - 4 Replies
- 1906 Views
- Last post by tpryan
Wed Sep 23, 2009 7:59 am
- IC Op-Amp questions.
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- First seventh circle build
by guitron » Tue Jun 16, 2009 3:09 am - 1 Replies
- 1506 Views
- Last post by Mylithra
Fri Sep 18, 2009 8:41 am
- First seventh circle build
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- 1.4 A12 BOM
by analogical » Wed Jul 30, 2008 8:21 pm - 1 Replies
- 1098 Views
- Last post by Philo
Sat Sep 05, 2009 6:02 pm
- 1.4 A12 BOM
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- How flat is the freq response of the A12?
by mojojo » Thu May 28, 2009 11:19 am - 3 Replies
- 1721 Views
- Last post by innerpeaz
Sat Aug 15, 2009 10:31 am
- How flat is the freq response of the A12?
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