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Old 12th December 2008, 11:28 AM   #1
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Default 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.
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Old 12th December 2008, 05:04 PM   #2
forr is offline forr  France
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Hi Halebopp76,
I got two CE1004 and this schematics may help.
Higher definition schematics through email.
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File Type: jpg crimsonamp.jpg (74.4 KB, 2195 views)
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Old 12th December 2008, 05:45 PM   #3
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I have a working crimson, and some modules, both alive and dead... a higher rez schema would be much appreciated.

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Old 12th December 2008, 10:53 PM   #4
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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
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Old 13th December 2008, 12:04 PM   #5
AndrewT is offline AndrewT  Scotland
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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?
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Old 13th December 2008, 12:25 PM   #6
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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.
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Old 13th December 2008, 01:55 PM   #7
AndrewT is offline AndrewT  Scotland
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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.
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Old 13th January 2011, 11:46 AM   #8
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Quote:
Originally Posted by forr View Post
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)
Attached Images
File Type: gif Crimson Mr. Brian Powell.gif (25.7 KB, 1647 views)
File Type: gif Crimson Mr. Peter Moore.gif (20.9 KB, 1407 views)

Last edited by tiefbassuebertr; 13th January 2011 at 11:55 AM.
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Old 5th March 2011, 10:50 PM   #9
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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.
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Old 6th March 2011, 10:04 AM   #10
AndrewT is offline AndrewT  Scotland
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Welcome B.Powell.
I look forward to hearing what you have to say on design philosophy and practical applications.
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