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Old 28th April 2008, 03:14 PM   #1
chemhaz is offline chemhaz  Australia
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Default Calling all Soundstream experts

I need to determine the model of an amp I picked up recently.

It's one of the old blue Reference series, somone decided to strip the pain off the heatsink and chrome it, it looks nice but I can't tell what it is, and he had no idea either.

From the size and imputs/connectors put it down to two models a REFERENCE 300 or a REFERENCE Class A 3.0.

I have a 300 and compared the baords and it looks different, I then checked the images on ampguts and what I saw did'nt match either.

The specs on the board state:
SOUNDSTREAM
REFERENCE
540-595
REV H

I can upload an image if required.

Thanks in advance
George
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Mitsubishi Magna.
Pioneer DEH 7650 hu, PPI PC4800 running front Boston Acoustic Pro 6.5's and rear Kenwood HQ 6x9's. RF POWER 250x2 running 2 Perless 12's (aka VDO HPS12)
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Old 28th April 2008, 08:38 PM   #2
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http://www.bcae1.com/temp/P2200002.JPG


This is a reference 300 and has the same board markings.
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Old 28th April 2008, 11:43 PM   #3
chemhaz is offline chemhaz  Australia
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That's where the similarities end. on my amp there are diodes between the resistors, similar to the image of a SS REF CA3.0 on ampguts. But it's just quite the same.

see image - http://farm3.static.flickr.com/2204/...5905767a_b.jpg
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Mitsubishi Magna.
Pioneer DEH 7650 hu, PPI PC4800 running front Boston Acoustic Pro 6.5's and rear Kenwood HQ 6x9's. RF POWER 250x2 running 2 Perless 12's (aka VDO HPS12)
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Old 28th April 2008, 11:57 PM   #4
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They probably used the same board for the class A 3.0 and the ref 300.

Yours appears to be the 3.0. The class A amps used 1 ohm emitter resistors and parallel diodes. The non-class A used 0.27 ohm resistors without the diodes.
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Old 29th April 2008, 02:01 AM   #5
chemhaz is offline chemhaz  Australia
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Thank you
George
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Mitsubishi Magna.
Pioneer DEH 7650 hu, PPI PC4800 running front Boston Acoustic Pro 6.5's and rear Kenwood HQ 6x9's. RF POWER 250x2 running 2 Perless 12's (aka VDO HPS12)
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