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Old 4th January 2007, 04:11 AM   #11
imix500 is offline imix500  United States
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Default Urei 6250

A Urei 6250 studio amp. Excellent build quality. Rubicon caps, Sanken 2SA1170/2SC2774, huge transformer, big heatsinks. A rare amp. $250
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Old 4th January 2007, 04:15 AM   #12
imix500 is offline imix500  United States
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Default Second Urei Pic

...
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Old 10th January 2007, 02:06 AM   #13
imix500 is offline imix500  United States
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Default Update

So, to hopefully spark a few buyers I am testing all the amps one by one. Testing will involve reforming the filter caps and looking at a square wave. Other tests can be performed on request.

First Up is DC150 #4. Filter caps reformed great and both channels pass a clean square wave.
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Old 18th January 2007, 12:36 AM   #14
imix500 is offline imix500  United States
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Default Update

Ok, all the Crown amps have been checked. Most of the filter caps reformed well but they should still be replaced soon.

Some of the IOC leds are not working. A quick look showed it is probably a bad connection somewhere, but who knows. At least one is working on each amp.

The only amp that showed any questionable behavior was #3. There is about -1v of offset at idle into a 6ohm load. It amplified a sqaure wave well and up to spec, IOC kicked in at about 66 watts. I did not try to adjust the offest.

I am testing the Ramsa and Urei amp now.

Thanks!
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Old 23rd January 2007, 03:54 AM   #15
imix500 is offline imix500  United States
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Ok, both the Ramsa and Urei amps have been tested.
Caps reformed great in both amps.
The Ramsa did 271W and 279W into 3.9ohms with a +4dBu unbalanced input. The amp had more power to deliver for sure, but +4 is as hard as I can drive it.

The Urei did 378W and 370W into 3.9ohms. This was just before any distortion could be seen on the scope. The clip led on channel one didn't illuminate. However it lit with channel two when it clipped. Weird.

I'll give it another week until fleabay.
Thanks!
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Old 16th March 2007, 04:29 AM   #16
imix500 is offline imix500  United States
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One more time before they go.
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Old 8th May 2007, 04:28 AM   #17
dannyr is offline dannyr  United States
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Default crown amps.

I am looking for the crown pre-amp that goes with this series. It's the crown psl-2. If anybody has one, please let me know. Thanks.

Danny
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Old 9th May 2007, 04:52 AM   #18
imix500 is offline imix500  United States
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Default A few more...

Details and pics to follow-

Mackie FR-M1400i

AB Precedent 400

EV 7600
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Old 29th May 2007, 04:06 AM   #19
imix500 is offline imix500  United States
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Default AB Precedent Series 400

A very nice, well built amp. Makes the second best sqare wave on the scope of all the amps I have for sale.
All original inside.

Power quoted is just before clipping into ~8.5ohms:

Ch A- 197.87W
3mV offset

Ch B- 206.40W
8mV offset
Bridged- 501.76W

$150
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Old 29th May 2007, 04:08 AM   #20
imix500 is offline imix500  United States
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Default Back and top...

Back and top...
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