schematic to marantz pm140

Tekko · 29th January 2006, 11:34 AM

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.

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

try this:www.eserviceinfo.com

Tekko · 31st January 2006, 10:36 AM

Checked that already, they had nothing.

29th January 2006, 11:34 AM	#1
Tekko diyAudio Member Join Date: Jan 2005	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. 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 ?

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29th January 2006, 12:54 PM	#2
Tekko diyAudio Member Join Date: Jan 2005	Nevermind. I got it working.

29th January 2006, 08:31 PM	#3
Tekko diyAudio Member Join Date: Jan 2005	Turned out i need the schematic anyway. The controls works but introduces a barely hearable difference. Anyone got a schematic for marantz pm140 amp ?

30th January 2006, 09:19 AM	#4
Tekko diyAudio Member Join Date: Jan 2005	Noone ? I need the schemo and im kinda in a hurry, i need it NOW.

30th January 2006, 07:29 PM	#5
Tekko diyAudio Member Join Date: Jan 2005	I guess i can forget about asking for stuff like this here then

31st January 2006, 03:14 AM	#6
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	try this:www.eserviceinfo.com

31st January 2006, 10:36 AM	#7
Tekko diyAudio Member Join Date: Jan 2005	Checked that already, they had nothing.

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