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SUN SV 2A3 stereo SE amp .... MEASUREMENTS
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Posted on March 30, 2015 at 14:49:09 | ||
Posts: 9730
Location: East of Kansas City Joined: January 10, 2005 |
Hi, I've recently worked from the schematics (on-line) of this cute amp, and developed two simple but seemingly-effective, conservative, circuit changes, that should equate to worthwhile performance improvements. Is there anyone willing to make some voltage measurements of their amp, or even send it to me, so I can be sure I am modeling / simulating it all precisely, and not just depend on SUN's "limited-information" schematic. I'd be happy to share my results, and give anyone who helps a preference on what I've developed and document. If you measure your amp at home, (which I would prefer), you (1) must have a multimeter and know how to measure Ohms, DC and AC volts and (2) know how to SAFELY measure below deck, amp ON, and not hurt yourself ! My email address is above. 'Have NO idea how many SV 2A3 SE'ers are out there. Its not a bad design to start with, BUT, two obvious areas just "BEG" for a reconfigure, to play better. Jeff Medwin |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on March 31, 2015 at 10:40:10 | |
Posts: 8313
Location: Seattle Joined: June 18, 2004 |
Thank you, you proved my point. |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 1, 2015 at 09:35:04 | |
So the amp is running in Class "A" at 62% max dissipation? |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 1, 2015 at 10:58:33 | |
Posts: 3486
Joined: August 20, 2004 |
Do you have a load line drawn for this op point? |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 1, 2015 at 18:17:07 | |
Posts: 3486
Joined: August 20, 2004 |
Yes. I plotted it earlier and things got wierd. I dont own a curves stretcher. |
whoa!..what just happened, posted on April 2, 2015 at 06:17:49 | |
Posts: 3486
Joined: August 20, 2004 |
Walk us through it , please. |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 2, 2015 at 14:22:51 | |
Posts: 9730
Location: East of Kansas City Joined: January 10, 2005 |
Excuses, excuses, excuses Al. Jeff |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 2, 2015 at 16:04:05 | |
Have you heard this amp ? Al |
De gustibus non est disputandum (nt), posted on April 3, 2015 at 10:24:39 | |
Posts: 7295
Location: Seattle, WA Joined: April 23, 2001 |
nt |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 4, 2015 at 05:51:23 | |
Posts: 537
Joined: June 5, 2006 |
Ohh..! the pain Doctor Smith, the pain.. !! |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 11, 2015 at 02:47:20 | |
Posts: 793
Joined: December 17, 2010 |
Class B SE. Thats a new one. |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on April 11, 2015 at 21:06:24 | |
Posts: 5430
Location: NYC Joined: April 27, 2001 |
Is it really -5dB or so at 20Khz? dave |
RE: perhaps RMAF ..., posted on April 25, 2015 at 08:02:46 | |
RMAF in Denver would be more likely since DF & JM would be there and I could hear the legendary SS product line. |
RE: SUN SV 2A3 stereo SE amp .... MEASUREMENTS , posted on February 6, 2017 at 10:06:30 | |
Posts: 1100
Location: Surprise AZ Joined: March 18, 2003 |
Updates? |