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Old 18th May 2010, 09:25 PM   #1
nhuwar is offline nhuwar  United States
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Default Rotel RMB- 100

Can anyone point me in the direction of a schematic for this amp?

Thanks,
Nick Huwar
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Old 18th May 2010, 10:18 PM   #2
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e mail me i have it
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Old 18th May 2010, 10:20 PM   #3
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Originally Posted by sakis View Post
e mail me i have it
Oh I remember those lovely little mosfet monoblock's. If memory serves me well B&W sold them as well under the name MPA1

I would love to have the schematic to, I send u a PM sakis.

Thank you in advance,

With kind regrds,
Bas
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Old 18th May 2010, 10:23 PM   #4
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e mail sent
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Old 19th May 2010, 12:36 AM   #5
nhuwar is offline nhuwar  United States
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Sakis, I sent you a pm with my email.

Nick
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Old 19th May 2010, 01:10 AM   #6
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Originally Posted by sakis View Post
e mail sent
Also to me?

With kind regards,
Bas
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Old 19th May 2010, 08:31 AM   #7
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 19th May 2010, 09:29 AM   #8
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Thank you Sakis!

What a sweet design. Different then anything I've seen from Rotel. DC coupled, mosfet's. I wonder what is the function of the PC827 optocoupler in the bias circuit?

With kind regards,
Bas
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Old 12th December 2010, 08:36 PM   #9
kelte44 is offline kelte44  Germany
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Hello Sakis,
one of my cubes is damaged today, would you pls so kind to send me a circuit?
Thanks Georg
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Old 12th August 2011, 05:50 PM   #10
Lolcol is offline Lolcol  United Kingdom
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You can download the manuals for the B&W MPA1, which is identical, from here.

Bowers and Wilkins manuals, schematics and brochures - Hifi Manuals

The dual opto-coupler is connected transistors TR318 & TR319, which in turn are connected to the o/p and detect any DC over current in the 0R22 source resistors. The coupler output shuts off the power via the auto turn on (ATO) function.
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