|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Solid State Talk all about solid state amplification. |
  |
|
|
|
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 |
12th December 2012, 09:54 AM
|
#31 |
|
diyAudio Member
Join Date: Jul 2005
Location: D-55629 Schwarzerden
|
As I know, the 405 consists of two amps:
1) the single ended pure class-A power buffer for low levels with passive resistor load R30/31+Tr7 - no ccs in the neg. half (speakers runs about serial resistor R38, 18-47 ohms) 2) the push pull power class-B buffer - Tr9+Sziklai darl for neg half Tr8/10 By service I check always at first step only the single ended amp for a longer time and in the second step the whole circuit. |
|
|
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Quad esl 63 problem | howes hound | Planars & Exotics | 14 | 31st August 2009 05:40 PM |
| quad 44/405-2 another hum problem | graeme uk | Solid State | 8 | 6th July 2007 06:49 AM |
| Quad 405 hum problem | vzs | Solid State | 16 | 7th June 2006 09:26 AM |
| Quad ESL 63 problem. Please help | DirkD | Planars & Exotics | 9 | 4th October 2005 02:03 PM |
| Quad FM4 problem | JDeV | Solid State | 4 | 28th November 2004 08:04 AM |
| New To Site? | Need Help? |
