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.

Hi Halebopp76,
I got two CE1004 and this schematics may help.
Higher definition schematics through email.

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

dave

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

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?

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.

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.

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
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Kundenfeedback und Pressestimmen über Crimson Verstärker (various test reviews in German and English)

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.

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