digi01 0 Report post Posted July 31, 2006 how to connect a CCS diode. zang Share this post Link to post Share on other sites
neutralzz 0 Report post Posted July 31, 2006 thanks Share this post Link to post Share on other sites
Firefox 0 Report post Posted August 1, 2006 That Goot TQ-77 is a good soldering tool.. I've been using mine since 1995.. Share this post Link to post Share on other sites
digi01 0 Report post Posted August 22, 2006 any update? some diyer from euro have finished it. Share this post Link to post Share on other sites
heady 0 Report post Posted August 26, 2006 Just finished my SOHA today but have not case it yet, in fact have not found a case I like yet. Like to ask the experts about my built: The voltages for most of the test-points seems to be ok, except the -12.6V, which is actually only -12.47V. B+ = 54.7V V+ = 11.98V V- = -12.06V heater = -12.47 All the resistors values are as per the BOM. Any problems with these readings? Thanks. Share this post Link to post Share on other sites
Kippei 0 Report post Posted August 27, 2006 Look normal to me... I still haven got my PCB yet.. coz i miss out the collection that time... Share this post Link to post Share on other sites
heady 0 Report post Posted August 27, 2006 Been listening to the SOHA with EH12AU7 and OPA2134PA. The sound is too dark for me, even after playing for hours. Seems to me the OPA sound is too dominant. So I replaced the OPA with an AD8620, which is the only non-Burr Brown dual opamp I have with me. And the sound quality is great now. Not too bright, yet the details and clarity is there, not veiled as with the OPA. In fact, I am hearing small little sounds in my recording of Buena Vista Social Club, which I have not heard before. That's a good sign. But it's too early for me to say I like the SOHA better than the PPA. I need to listen more. Share this post Link to post Share on other sites
digi01 0 Report post Posted August 28, 2006 Just finished my SOHA today but have not case it yet, in fact have not found a case I like yet. Like to ask the experts about my built: The voltages for most of the test-points seems to be ok, except the -12.6V, which is actually only -12.47V. B+ = 54.7V V+ = 11.98V V- = -12.06V heater = -12.47 All the resistors values are as per the BOM. Any problems with these readings? Thanks. these reading is ok. have you short the output resistors?what cans are you listening? nice building! Share this post Link to post Share on other sites
heady 0 Report post Posted August 28, 2006 these reading is ok. have you short the output resistors?what cans are you listening? nice building! Hi zang, I am using the output resistors (R6 and R16). Am I supposed to leave them out? Oops must have missed it. I am using DT880 (old model). Share this post Link to post Share on other sites
digi01 0 Report post Posted September 6, 2006 SOHA V3.0 WALKTHROUGH Share this post Link to post Share on other sites
