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-   -   Crimson (Krimson) Amp Schematics (http://www.diyaudio.com/forums/solid-state/134733-crimson-krimson-amp-schematics.html)

halebopp76 12th December 2008 10:28 AM

Crimson (Krimson) Amp Schematics
 
Hello everyone. I have come across two old amplifiers from Crimson that were put together from kits in the mid 80's. The one is 60W and the other a 100W. I believe the models are 608 and 1008 respectively. The transistors used are both Toshiba, 2N3773 and 2N3055 respectively.

I would like to get these guys running, does anyone have any info/schematics on these? Thank you in advance.

forr 12th December 2008 04:04 PM

2 Attachment(s)
Hi Halebopp76,
I got two CE1004 and this schematics may help.
Higher definition schematics through email.

planet10 12th December 2008 04:45 PM

I have a working crimson, and some modules, both alive and dead... a higher rez schema would be much appreciated.

dave

halebopp76 12th December 2008 09:53 PM

Yes, thank you, nice penmanship! Anything here would help. If people could send any info to my email, it would be appreciated: halebopp76 at hotmail.com

AndrewT 13th December 2008 11:04 AM

I only have 1704 schematics. But I don't post them here, not my copyright.

I would be surprised to see 2n3055 in the 1008 and the more expensive 2n3773 in the 608. Could they be the other way around?

halebopp76 13th December 2008 11:25 AM

I just checked and the 608 board, definitely a 2N3773 installed. From what my friend told me, these were some of the nicest sounding amps he has heard. Looking forward to find out for myself.

AndrewT 13th December 2008 12:55 PM

Quote:

Originally posted by halebopp76
From what my friend told me, these were some of the nicest sounding amps he has heard.
yes, I still have 6, sold the other two.
They perform even better with a bigger PSU that can feed real current into real speakers.
35-0,35-0Vac 625VA into four banks of 20mF to feed a stereo pair of 1704 works well for 8ohm speakers.
The advantage of the 1704 is the limiters are set for 2r7 rather than 5r4 giving peak current ability of ~15A. The filter on the protection allows even higher transient currents when demanded. It just happens that a nominal 8ohm severe reactance speaker can draw about 42/8/0.35~15Apk. The 4r0 loading and 2r7 limiting spec are just about ideal for most 8ohm speakers.

tiefbassuebertr 13th January 2011 10:46 AM

2 Attachment(s)
Quote:

Originally Posted by forr (Post 1683167)
Hi Halebopp76,
I got two CE1004 and this schematics may help.
Higher definition schematics through email.

Thank you for that schematic.
I need a complete overview of all models, amp modules and associated schematic diagrams of Crimson's legacy (resp. vintage) and currently audio devices.
Who can help me ?
Here some URLs:
http://www.audio-stereo.de/dokuments/pcrimsond.pdf (german)
http://www.aufi.co.il/amp/crimson.pdf (English)
:: the austin hifi blog ::: July 2009
Crimson HiFi - High End Verstärker bei Schappach Audio Mannheim
Home
Kundenfeedback und Pressestimmen über Crimson Verstärker (various test reviews in German and English)

bepowell 5th March 2011 09:50 PM

Hello. I am the designer of the Crimson amplifiers. Please feel free to mail me at bepowell@ntlworld.com. We do still manufacture top end hi-fi but not kit PCBs any more. I may be able to help with schematics or technical queries.

AndrewT 6th March 2011 09:04 AM

Welcome B.Powell.
I look forward to hearing what you have to say on design philosophy and practical applications.


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