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Tekko 29th January 2006 11:34 AM

schematic to marantz pm140
Anyone has a schematic to a marantz pm140 amplifier ?

I am struggling to get the tone controls to work with another amp, but all i get is controls doing the opposite of how they are marked, loads of bass and a hot amplifier. :hot: :confused:

In the marantz the controls were the NFB loop or atleast part of it.

Anyone got a schemo for this thing ?

I have searched the web but came up emty handed.

What if i replace the amps existing nfb loop with the tone control circuit, would that make it work better ?

Tekko 29th January 2006 12:54 PM

Nevermind. I got it working.

Tekko 29th January 2006 08:31 PM

Turned out i need the schematic anyway.

The controls works but introduces a barely hearable difference.

Anyone got a schematic for marantz pm140 amp ?

Tekko 30th January 2006 09:19 AM

Noone ? :(

I need the schemo and im kinda in a hurry, i need it NOW.

Tekko 30th January 2006 07:29 PM

I guess i can forget about asking for stuff like this here then:(

Leolabs 31st January 2006 03:14 AM


Tekko 31st January 2006 10:36 AM

Checked that already, they had nothing.

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