|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Pass Labs This forum is dedicated to Pass Labs discussion. |
  |
|
|
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
 |
|
|
Thread Tools | Search this Thread |
31st May 2004, 07:41 PM
|
#1 |
|
diyAudio Member
Join Date: May 2004
Location: pescara
|
threshold SL10 - DC output
Hello, i have a Threshold SL-10 preamp and a threshold TA300 poweramp, now i have a problem with the preamp :
Only in the left channel i have found one DC of 0,12V, this cause a problem with the poweramp (only the power amp without the pre is ok), and so my left woofer have a strange and unusual movement, even if sound the same one. What's it? a any broken transistors? Thank you Pierluigi (Italy) |
|
|
31st May 2004, 11:24 PM
|
#2 |
|
The one and only
Join Date: Mar 2001
|
I am posting the schematic of the high level stage, which
(hopefully) shows a direct coupled output whose DC offset is adjusted by an op amp. The op amp could be bad, or the capacitor could be leaking, or some other component could be failed sufficiently that the op amp can't make the correction. |
|
|
|
21st February 2012, 03:20 AM
|
#4 | |
|
diyAudio Member
Join Date: Sep 2010
|
Quote:
I take an interest that try out , Pre SL-10 , this , I want to know position value aforementioned , and the circuit , Supply ,  [/IMG]Thanks 
|
|
|
|
|
21st February 2012, 03:43 AM
|
#5 |
|
diyAudio Member
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
|
search
it's there
__________________
my Papa is smarter than your Nelson ! tnx to  clean  thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb
|
|
|
|
27th February 2012, 07:44 PM
|
#6 |
|
diyAudio Member
Join Date: Dec 2006
|
 i really love the sound and look of this preamp , the only thing is the hi level stage gain , too much gain for nowadays sources and amp . is there a solution to reduce the gain of this stage without affecting too much the sound ?i have already put a 30k resistor in series with the volume pot but it is the max i could had before affecting the sound.. any idea ? 
__________________
French is not a crime. |
|
|
|
27th February 2012, 08:09 PM
|
#7 |
|
diyAudio Member
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
|
 didn't I already told you (somewhere ) - just cut that 18K2 in half , for 6db gain reduction gain is roughly 18K2/750
__________________
my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb
|
|
|
|
27th February 2012, 08:26 PM
|
#9 |
|
diyAudio Member
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
|
either solder another one 18K2 across existing one , or desolder existing one and solder 9K1 instead
__________________
my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb
|
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| threshold sl10 | intense-tavda | Pass Labs | 110 | 2nd July 2011 09:10 PM |
| threshold sl10 | donadi.tv | Pass Labs | 1 | 15th February 2008 04:25 PM |
| Threshold SL10 modified | SL10User | Pass Labs | 10 | 28th September 2007 09:24 AM |
| Threshold sl10 fs | intense-tavda | Swap Meet | 3 | 23rd December 2006 11:22 AM |
| New To Site? | Need Help? |
| Page generated in 0.10187 seconds (78.12% PHP - 21.88% MySQL) with 11 queries |
