|
|||||||
| 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 |
1st March 2005, 04:19 PM
|
#1 |
|
diyAudio Member
Join Date: Apr 2002
Location: Hungary
|
Classé DR-9 amplifier
Hello Everybody!
I would like to see some pictures about the inside construction of the classical Classé DR-9 amplifier. I would appriciate, if somebody have an internal picture, and can post it here. For me is mainly interested, how the emitter resistors are connected to transistors, but, of course, the whole interior also. Regards |
|
|
21st March 2005, 04:14 PM
|
#3 |
|
diyAudio Member
Join Date: Oct 2004
Location: At the sea front, just under Rotterdam
|
Why the DR9?
__________________
Looks like Sponge Bob has killed another thread. |
|
|
|
22nd March 2005, 06:47 AM
|
#4 |
|
diyAudio Member
Join Date: Apr 2002
Location: Hungary
|
I gathering information, because I would like to build one later on, to compare with my Aleph amplifier.
I just want to see the phisical layout, and for this a picture is just enough to decide to go or not to go. |
|
|
|
10th November 2005, 11:55 AM
|
#6 |
|
diyAudio Member
Join Date: Oct 2004
Location: At the sea front, just under Rotterdam
|
Depends on the one you ask.
The DR9 has 6 MJ15003/4's in parallel per rail, at 100mA bias each. Makes it class A up to 1.2 amps, nearly 6 watts in 8 Ohm. The DR3 VHC has 4 in parallel, MJ11015/16's. Class A, yes. Full class A, no. The DR9 employs a CRC powersupply, 60.000uF per rail. With 250 watt MJ15024/25, proper heatsinking, and increased capacitor size to +200.000uF/channel it could run full class A on the 58VDC rails. But then you are talking nearly 1000 watts dissipation.
__________________
Looks like Sponge Bob has killed another thread. |
|
|
|
10th November 2005, 03:17 PM
|
#8 | |
|
diyAudio Member
Join Date: Apr 2002
Location: Hungary
|
Quote:
Basically, I do not know the specifications of those amplifiers, but like, that built for long time use..., and I have the schematic of this model. I was thinking also on DR3 (not the VHC model) as well, the topology is the same. OK, not decided yet fully. By the way. Do you know the specifications of those classic amplifiers? I would be grateful, if you could post it. Regards, |
|
|
|
|
10th November 2005, 03:28 PM
|
#9 |
|
diyAudio Member
Join Date: Oct 2004
Location: At the sea front, just under Rotterdam
|
I'd have to look for the magazines with the tests of the Classé models.
From memory: DR3 VHC does 45 watts, DR9 is good for 170 W/8. All of the older Classé models i've seen used TO3 output devices and output boards, with emitter resistors soldered on the boards. Some models had the big resistors soldered on the bottom of the output boards, others on the top. First international amplifier brand 20 years ago i've seen that used Philips electrolytics throughout.
__________________
Looks like Sponge Bob has killed another thread. |
|
|
|
| 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 |
| Where to send my Classe' DR-2 | 5u4 | Solid State | 1 | 12th July 2009 11:58 PM |
| schematic classe d amplifier??? | j.p-ni- | Class D | 0 | 4th October 2004 03:54 AM |
| Classe DR-9 | lpd | Swap Meet | 3 | 19th May 2004 03:08 PM |
| Classé DR3 | marzio70 | Solid State | 2 | 7th January 2003 09:38 PM |
| Classe CA-150 | Super | Everything Else | 2 | 5th September 2001 03:12 AM |
| New To Site? | Need Help? |
| Page generated in 0.10343 seconds (74.29% PHP - 25.71% MySQL) with 10 queries |
