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Old 1st March 2009, 10:07 PM   #1
burbeck is offline burbeck  United Kingdom
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Default Crimson Electric Preamp pcb

i have found in a box that i had forgotten about a brand new Crimson preamp pcb, this was sold as a kit as is ready assembled, it comes with original paperwork (this is a used copy of paperwork but original).

Note the following NOT SUPPLIED
requires usual +/- 15Volt psu
Volume pot
Balance pot
Input selector switch

has MM disc stage on board
these were well respected in the day, i built a few of them for different people.

i am open to offers on this one. please ask for more information
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Old 2nd March 2009, 08:48 AM   #2
exurbia is offline exurbia  Australia
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Hi burbeck,
what are the dimensions of the board ?
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Old 2nd March 2009, 09:51 AM   #3
burbeck is offline burbeck  United Kingdom
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hi 130 X 90mm
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Old 2nd March 2009, 10:12 AM   #4
exurbia is offline exurbia  Australia
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Thanks Bob,
i should have asked how high it is as well, my case is height challenged with flying mole modules in it, there is only 21mm above them for the preamp.
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Old 2nd March 2009, 08:47 PM   #5
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Hello,
do you have a picture of the board?
Thanks
Guglielmo
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Old 3rd March 2009, 09:49 PM   #6
burbeck is offline burbeck  United Kingdom
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hi i will take a pic and post soon
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Old 6th March 2009, 05:07 PM   #7
burbeck is offline burbeck  United Kingdom
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hi guys
i was incorrect with the sizes, they are135X80X23mm

i have now tested this board and is 100% working

open to offers this must be some use to some one as a first project, it
requires
volume pot
balance pot
input selector switch
power supply -15 0 +15 @ 25 mA
and a box to put it in

come on you wont insult me, i just think it is far to good to throw away.
Attached Images
File Type: jpg crimson.jpg (54.9 KB, 525 views)
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Old 6th March 2009, 11:43 PM   #8
burbeck is offline burbeck  United Kingdom
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Default Spec

spec preamp

output voltage 0dbm (0.775mV) will drive 99% of poweramps

output impeadance 600R

input sensitivity -20dbm (70mV) line in (adjustable)
input impeadance 560kR

power requirments +-15 volts @15mA



spec moving magnet phono stage

2.0 mV suits most magnetic or high output moving coil cartridges

47k @20pf adjustable to suit cartridge used

RIAA accurate to better than 1 %

go on its a good project,
these amps were loved at the time knocking the pants off stuff costing 20 times more, you might get it for a few quid
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Old 9th March 2009, 12:57 AM   #9
burbeck is offline burbeck  United Kingdom
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BUMP
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Old 9th March 2009, 10:03 AM   #10
vse is offline vse  United Kingdom
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you have pm.
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