Marantz CD63 & CD67 mods list - Page 801 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

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
Reply
 
Thread Tools Search this Thread
Old 15th October 2007, 09:38 AM   #8001
SimontY is offline SimontY  United Kingdom
diyAudio Member
 
SimontY's Avatar
 
Join Date: May 2003
Location: Sheffield, North England
Send a message via MSN to SimontY
Quote:
Originally posted by rowemeister
Perhaps the SC4 is that good.
Oh dear, this thought process sounds expensive!!
  Reply With Quote
Old 15th October 2007, 09:44 AM   #8002
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by Thomo

I hope not!

Reading Audiocom's spiel about the sc4, they say it has separate on-board low noise regs for dig and analogue.

Does anyone know if there's any way to split these on the sc2 and feed them with off-board regs?
Of course it can be done, the circuit will need a good looking at but yes anything is possible.

Brent
  Reply With Quote
Old 15th October 2007, 09:54 AM   #8003
Thomo is offline Thomo  United Kingdom
diyAudio Member
 
Thomo's Avatar
 
Join Date: Nov 2006
I'll take some detailed pics in a minute and fire off an email to Audiocom for details (don't count on getting any though).

Lee.
__________________
/\/\/\/\/\/\/\/
  Reply With Quote
Old 15th October 2007, 10:23 AM   #8004
Thomo is offline Thomo  United Kingdom
diyAudio Member
 
Thomo's Avatar
 
Join Date: Nov 2006
I've started a new thread for the clock thingy, so feel free to contribute, comment or anything else.

Superclock Mod Thread

Cheers,

Lee.
__________________
/\/\/\/\/\/\/\/
  Reply With Quote
Old 15th October 2007, 10:25 AM   #8005
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
O rly

Brent
  Reply With Quote
Old 15th October 2007, 10:31 AM   #8006
Thomo is offline Thomo  United Kingdom
diyAudio Member
 
Thomo's Avatar
 
Join Date: Nov 2006
lol. Maybe I shouldn't have bothered the amount of times this thread has gone o/t!

Lee
__________________
/\/\/\/\/\/\/\/
  Reply With Quote
Old 15th October 2007, 09:31 PM   #8007
diyAudio Member
 
Join Date: Sep 2007
Quote:
Originally posted by navin


200 W class A? that must produce a lot of heat as well. can you share the details of your system (2.5 way loudspeaker, preamp etc..)?
Hi Navin

Yes my amplifiers produce a lot of heat, quite nice in winter. (It can be switched to class AB) The design started about 10 years ago, running class AB with Mosfet output stage. After several versions, I ended up with massive heatsinks, class A and 1kW power supplies per channel.

The pre-amp is a discrete dual mono design with balanced and unbalanced inputs / outputs with 2 x 50VA transformers and remote control.

The speakers are manufactured of 32mm MDF, it is a 2.5 way transmission line design, constructed to allow for exact time alignment of all drivers as well as the front firing port. I use 2 x Seas Excel 6.5" magnesium cone woofers, one for mid / bass and the other only on bass, and a Seas Millenium tweeter. In the crossover network I use foil coils and Hovland capacitors.

For interlinks, speaker and power cables, I use Ecosse Monocrystal cables.

Regards

André
  Reply With Quote
Old 16th October 2007, 12:07 AM   #8008
SimontY is offline SimontY  United Kingdom
diyAudio Member
 
SimontY's Avatar
 
Join Date: May 2003
Location: Sheffield, North England
Send a message via MSN to SimontY
Wow, that's an amazing setup fed by a second rate source! Time to get upgrading!!!
  Reply With Quote
Old 16th October 2007, 08:05 AM   #8009
diyAudio Member
 
Fidelity Audio's Avatar
 
Join Date: Dec 2005
Location: Doncaster England
Quote:
Originally posted by SimontY
Wow, that's an amazing setup fed by a second rate source! Time to get upgrading!!!
Just what I was thinking, lots of mods needed to get the most out of the system (although I would guess he has vinyl in this system too)

Brent
  Reply With Quote
Old 16th October 2007, 01:26 PM   #8010
diyAudio Member
 
Join Date: Dec 2005
Location: Wales
Default External tranny and other things..

Time for a report.....
Large external transformer for the opamps (225VA) is a success. Loads of bass, clean mid. I am going to try an 80VA, just to compare. The 225VA is a little heavy! This was to replace a small 6VA tranny. 12000uF Audio Elnas used, with ultra fast diodes, feeding schulz regs in the CD63KI.

Sound now compares well with my Linn LP12 for bass, probably even more detailed, although they do obviously sound "different". Now I will try a new PSU for the preamp in my PM17KI.

As for A class amps, I have always biassed my AB class stages more towards A class for the first few watts of output power with good effect, and much less heat! YOu have to be carefull though. I have to monitor temperatures carefully for the first few hours just in case i have taken things toooo far.

Cheers,

Geoff
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 06:16 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2