J99
172 topics • Page 1 of 4 • 1, 2, 3, 4
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- Op Amp Questions
by Todzilla » Mon Sep 28, 2020 7:15 am - 1 Replies
- 8296 Views
- Last post by codeman015
Thu Oct 29, 2020 12:03 pm
- Op Amp Questions
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- A question about trim pot values
by DreamBig » Wed Jan 30, 2019 10:59 am - 0 Replies
- 4631 Views
- Last post by DreamBig
Wed Jan 30, 2019 10:59 am
- A question about trim pot values
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- Lessons Learned: Failure and Success
by heddykevy » Tue Feb 16, 2016 8:02 am - 0 Replies
- 2442 Views
- Last post by heddykevy
Tue Feb 16, 2016 8:02 am
- Lessons Learned: Failure and Success
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- Servo problem with J99s
by SoundBase » Thu Dec 17, 2015 9:28 am - 1 Replies
- 2108 Views
- Last post by SoundBase
Mon Dec 21, 2015 10:05 am
- Servo problem with J99s
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- Tim, any reason I can't use 918 Op-Amps in the J99
by Category 5 » Thu Jun 26, 2014 8:57 am - 0 Replies
- 2733 Views
- Last post by Category 5
Thu Jun 26, 2014 8:57 am
- Tim, any reason I can't use 918 Op-Amps in the J99
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- 990C's suppose to get hot?
by 4johnny » Tue Jun 24, 2014 5:53 am - 0 Replies
- 2566 Views
- Last post by 4johnny
Tue Jun 24, 2014 5:53 am
- 990C's suppose to get hot?
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- different response when phase is flipped
by teleharmonic » Tue Sep 05, 2006 7:39 pm - 10 Replies
- 6830 Views
- Last post by Fattyma4
Tue May 13, 2014 9:22 pm
- different response when phase is flipped
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- R40 Smoking
by NuSkoolTone » Wed Mar 18, 2009 3:08 pm - 11 Replies
- 7459 Views
- Last post by Meyer
Mon Dec 02, 2013 2:29 am
- R40 Smoking
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- Modding AD797 J99 with 990s
by fredpg » Tue Jul 23, 2013 11:31 am - 0 Replies
- 2376 Views
- Last post by fredpg
Tue Jul 23, 2013 11:31 am
- Modding AD797 J99 with 990s
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- 1st three steps of gain very loud
by Monty70 » Wed Jun 19, 2013 5:46 pm - 2 Replies
- 2660 Views
- Last post by Monty70
Sun Jun 23, 2013 1:50 pm
- 1st three steps of gain very loud
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- Op-Amp availability
by Soundman1402 » Fri Feb 22, 2013 3:11 pm - 0 Replies
- 2656 Views
- Last post by Soundman1402
Fri Feb 22, 2013 3:11 pm
- Op-Amp availability
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- J99 and phantom power
by Mylithra » Mon Feb 27, 2012 2:35 pm - 2 Replies
- 2797 Views
- Last post by Mylithra
Thu Nov 29, 2012 9:47 pm
- J99 and phantom power
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- U2 (SC99) Voltage is really high @ bias config step
by geistnote » Fri Jul 13, 2012 10:35 pm - 2 Replies
- 2517 Views
- Last post by tpryan
Sun Jul 15, 2012 2:53 pm
- U2 (SC99) Voltage is really high @ bias config step
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- SCA J99 Experience
by mws » Sat Mar 19, 2011 6:25 pm - 2 Replies
- 4058 Views
- Last post by Karl
Fri Feb 24, 2012 10:28 pm
- SCA J99 Experience
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- V 3.3 Board, Assembly Instructions?
by Phrazemaster » Mon Jan 23, 2012 12:47 am - 2 Replies
- 2728 Views
- Last post by elaine
Wed Feb 08, 2012 2:10 am
- V 3.3 Board, Assembly Instructions?
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- Just got my first J99 Up and Running and...Wow!!
by Phrazemaster » Sat Jan 28, 2012 6:50 pm - 0 Replies
- 2791 Views
- Last post by Phrazemaster
Sat Jan 28, 2012 6:50 pm
- Just got my first J99 Up and Running and...Wow!!
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- power-up test with or without op-amps?
by dbonin » Sat Dec 24, 2011 9:24 am - 1 Replies
- 2571 Views
- Last post by dbonin
Sun Dec 25, 2011 11:41 am
- power-up test with or without op-amps?
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- Houston, we have a problem! discharges/drop-out audio
by serpaven » Wed Nov 02, 2011 7:47 am - 11 Replies
- 6398 Views
- Last post by serpaven
Sun Dec 18, 2011 5:14 am
- Houston, we have a problem! discharges/drop-out audio
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- j99 U1/U2 voltages off
by jpsthecelt » Tue Oct 11, 2011 4:13 pm - 1 Replies
- 2488 Views
- Last post by jpsthecelt
Tue Oct 11, 2011 5:06 pm
- j99 U1/U2 voltages off
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- Oscillation issue when gain is at, or above 2-3 o clock
by crtstudios » Fri Sep 23, 2011 3:48 pm - 1 Replies
- 2498 Views
- Last post by tpryan
Sun Sep 25, 2011 10:24 am
- Oscillation issue when gain is at, or above 2-3 o clock
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- Frying bacon
by Sean S » Wed Jun 22, 2011 8:33 am - 3 Replies
- 3141 Views
- Last post by Sean S
Sat Aug 20, 2011 5:26 am
- Frying bacon
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- correct voltages, no sound
by malcolm » Thu Jul 28, 2011 11:46 am - 2 Replies
- 2817 Views
- Last post by Randyman...
Fri Aug 12, 2011 5:40 pm
- correct voltages, no sound
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- All tests perfect - no audio (SOLVED)
by jamesnorth » Mon May 09, 2011 2:56 am - 12 Replies
- 6595 Views
- Last post by tpryan
Mon Jun 13, 2011 11:02 am
- All tests perfect - no audio (SOLVED)
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- J99 noise high gain
by Thepilgrimsdream » Sun May 15, 2011 5:37 pm - 6 Replies
- 4663 Views
- Last post by tpryan
Mon Jun 13, 2011 10:58 am
- J99 noise high gain
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- There is unknown noise at +48V situation
by mojave3 » Sun Feb 13, 2011 4:07 am - 6 Replies
- 4070 Views
- Last post by tpryan
Tue Apr 26, 2011 11:21 am
- There is unknown noise at +48V situation
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- noise while using gain switch
by mikikiki » Wed Mar 30, 2011 2:33 pm - 1 Replies
- 2750 Views
- Last post by tpryan
Sun Apr 03, 2011 2:57 pm
- noise while using gain switch
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- wrong voltage at U3 with J99
by mikikiki » Sun Mar 27, 2011 5:41 pm - 3 Replies
- 3192 Views
- Last post by tpryan
Sun Apr 03, 2011 2:53 pm
- wrong voltage at U3 with J99
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- Biasing issue
by MLAudio » Tue Mar 15, 2011 9:10 am - 5 Replies
- 4101 Views
- Last post by MLAudio
Fri Mar 18, 2011 3:45 pm
- Biasing issue
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- J6 and J7 jumpers, and other thoughts!
by dtrax » Fri Mar 04, 2011 11:21 pm - 2 Replies
- 2843 Views
- Last post by dtrax
Mon Mar 14, 2011 9:05 pm
- J6 and J7 jumpers, and other thoughts!
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- J99 - mismatched levels
by P_N » Thu Feb 24, 2011 7:27 am - 4 Replies
- 3644 Views
- Last post by tpryan
Sun Feb 27, 2011 8:00 am
- J99 - mismatched levels
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- The Short on CONN 1
by MRath » Thu Jan 20, 2011 7:51 am - 1 Replies
- 2844 Views
- Last post by tpryan
Fri Jan 21, 2011 3:37 pm
- The Short on CONN 1
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- Jumper Settings J1 & J2
by mrosso » Thu Feb 23, 2006 6:46 pm - 10 Replies
- 32577 Views
- Last post by tpryan
Tue Nov 30, 2010 1:43 pm
- Jumper Settings J1 & J2
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- turn off/disable the phantom power, jumper 3
by Brian Ellingboe » Fri Nov 26, 2010 3:39 pm - 1 Replies
- 2720 Views
- Last post by tpryan
Fri Nov 26, 2010 4:40 pm
- turn off/disable the phantom power, jumper 3
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- j8 resistance question
by marchuk » Fri Nov 12, 2010 2:38 pm - 1 Replies
- 2871 Views
- Last post by tpryan
Tue Nov 16, 2010 2:37 pm
- j8 resistance question
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- J99 Rev 2.0
by MLAudio » Sun Sep 12, 2010 8:35 am - 1 Replies
- 2729 Views
- Last post by tpryan
Fri Sep 17, 2010 8:49 am
- J99 Rev 2.0
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- U3
by room4studios » Wed Jun 23, 2010 11:04 am - 3 Replies
- 3235 Views
- Last post by tpryan
Fri Jun 25, 2010 4:56 pm
- U3
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- C18 & C22 Wrong Voltage?
by room4studios » Sat Jun 19, 2010 6:12 am - 2 Replies
- 2982 Views
- Last post by tpryan
Sat Jun 19, 2010 10:51 am
- C18 & C22 Wrong Voltage?
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- Forsell's JFET-992 Op-Amps anyone?
by niccolo » Sun Jul 26, 2009 4:33 am - 10 Replies
- 8335 Views
- Last post by Soundman1402
Thu May 27, 2010 4:29 pm
- Forsell's JFET-992 Op-Amps anyone?
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- trouble with biasing rev 3.6
by packagebear » Tue May 25, 2010 5:15 pm - 2 Replies
- 3084 Views
- Last post by packagebear
Thu May 27, 2010 1:32 pm
- trouble with biasing rev 3.6
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- Trouble with another 990C?
1, 2by Archmart » Sun Mar 14, 2010 5:47 pm - 16 Replies
- 9342 Views
- Last post by Archmart
Sun Apr 18, 2010 3:04 pm
- Trouble with another 990C?
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- Different versions?
by edwin » Tue Dec 16, 2008 5:14 pm - 7 Replies
- 5795 Views
- Last post by Archmart
Sun Mar 07, 2010 4:56 pm
- Different versions?
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- Switchable impedence possible?
by Thunder Audio » Tue Aug 16, 2005 1:47 pm - 3 Replies
- 14825 Views
- Last post by tpryan
Fri Mar 05, 2010 1:08 pm
- Switchable impedence possible?
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- Problems on both J99s
by atiller » Tue Sep 22, 2009 8:16 pm - 13 Replies
- 11310 Views
- Last post by atiller
Sun Feb 21, 2010 5:26 pm
- Problems on both J99s
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- blinking led on power supply with j99 connected
by jashwa » Thu Oct 15, 2009 4:22 pm - 0 Replies
- 3137 Views
- Last post by jashwa
Thu Oct 15, 2009 4:22 pm
- blinking led on power supply with j99 connected
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- AD797 vs. 990c
by jwschaff » Tue Sep 05, 2006 8:55 am - 5 Replies
- 21036 Views
- Last post by mmarton
Sun Jul 26, 2009 1:28 pm
- AD797 vs. 990c
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- I can't adjust the bias correctly
by elbartolo » Fri Jun 05, 2009 12:34 am - 9 Replies
- 6720 Views
- Last post by elbartolo
Fri Jun 26, 2009 8:56 am
- I can't adjust the bias correctly
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- SW2 stop pins: must be non conductive? *SOLVED*
by niccolo » Wed Jun 17, 2009 1:27 pm - 3 Replies
- 3566 Views
- Last post by niccolo
Sat Jun 20, 2009 5:19 pm
- SW2 stop pins: must be non conductive? *SOLVED*
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- J99's clipping before my AD (MH2882) *SOLVED*
by niccolo » Fri Feb 08, 2008 5:41 pm - 3 Replies
- 3733 Views
- Last post by niccolo
Wed Apr 08, 2009 9:57 am
- J99's clipping before my AD (MH2882) *SOLVED*
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