Denon PMA 2000RIV

[mr l]

here's some pics of the first version,phono stage had a ba4558 op amp,i replaced with a ne5532 - %100 improvement.

 

[mr l]

here's the power amp section,nicely built for commercial equipment,(compared to nad,h/k,musical fidelity ) i have a service manual for the first version,i can scan the schematic but will take some time (it's on a big spreadsheet).

 

[bekim]

mr I,

If you scan this schema I would like to have it if is not bother for you. I'll be interested on this amp how is it build.

thanx


bekimh@gmail.com

 

[carlosfm]

Last pic.

 

[Porter]

I may pull the cover off mine to take a few pics for you guys when I get a chance later today.

 

[Porter]

Well, i haven't gotten a chance to pull mine apart but here's the current interior shot from the PMA-2000AE, which is a cosmetic update to the PMA-2000mkIV-R.

An externally hosted image should be here but it was not working when we last tested it.

 

[Janka07]

WOW that s what I m looking for...

I want to upgrade my Denon Pma 2000 IVR... not the amp section because it s pretty good but pre amp... euuhhh not quite as good

will post pics later on

 

[Janka07]

pictures from my Denon...

 

[Janka07]

and pretty dissapointed to see that volume knob, and selector where mounted on a base of plastic and glued to the front panel...

 

[carlosfm]

WOW that s what I m looking for...

I want to upgrade my Denon Pma 2000 IVR... not the amp section because it s pretty good but pre amp... euuhhh not quite as good

will post pics later on

Preamp 'not quite as good' is a nice way to say it.
/&%&%$&%$ preamp.
Sounds really bad, kills the wole amp.
The power amp is quite good, yes.

and pretty dissapointed to see that volume knob, and selector where mounted on a base of plastic and glued to the front panel...

Glued?
No.
There's a PCB behind the front panel. Not an easy task to dismantle all that, but I've done it, I bypassed that nasty preamp, volume pot direct to the power amps.
Without a schematic (I don't have it too) you need to follow all that wiring first to understand what are you going to do.

 

[Portlandmike]

Does anyone have a schematic of the PMA 2000 IVR or know where one can be had?

I have an earlier version PMA 2000, but its not very useful.

Thanks

Mike

 

[Mimas]

I have an older version of PMA-2000R, and would like to have the schematics too.

 

[Porter]

I bypassed that nasty preamp, volume pot direct to the power amps.

The current version (IV) has a switch on the back panel and a set of dedicated inputs to shunt input signal directly to the amplifier section, bypassing the preamp section entirely, including the volume control.

The posts in this thread regarding the preamp are only fully applicable to the earlier 2000R model... the 2000mkIVR is significantly upgraded in that regard but of course would still benefit from a good preamp.

 

[alpefe]

hello, I have a Denon PMA 2000R, and I would like to improve it, someone teine ​​the manual of this model, I have the the 2000IV R, and varies, not the same, appreciate any help, greetings.