Denon DVD 2900 mod

audiofan58 · 8th March 2004, 09:56 PM

Has anyone had any experience moding a Denon2900 player? So far I have installed soft recocovery diodes, resistors and BG caps in the power supply. I also installed Cardas connectors for Left/Right outputs, Burr Brown OP627 op amps, damping feet, and dampened the chassis (all the easiest stuff). I would like to go to the next step and replace the clock and anything else which will enhance the capabilities of this player. Any input is appreciated. Thank you.

eganz · 9th March 2004, 01:49 AM

and the sonic effects of your changes were ...

Praudio · 9th March 2004, 02:20 AM

You don't mention AC cord! A major step, on Denon DVD 3800.

mlloyd1 · 9th March 2004, 02:32 AM

Doesn't this thing use a switching power supply?

Quote:

Originally posted by audiofan58
... a Denon2900 player? So far I have installed soft recocovery diodes, resistors and BG caps in the power supply...

audiofan58 · 9th March 2004, 11:25 AM

The improvements were immediate. First, I replaced the diodes and noticed the sound was much more open and a bit more punch in the bass. This was probably the most cost effective upgrade. The addition of BB 627 op amps made a nice improvement also. Highs and midrange were much more defined and fluid.

I upgraded the power cable with one which I made. I used Caroll 10 AWG cable the Marinco and Wattgate connectors.

I also installed a new silver IEC connector on the unit and BG's in the PS. It has much more bass now than when I started but is still lacking in the lower end. Im not sure if it is a switching PS or not. Thanks for the replies....

A 8 · 11th March 2004, 05:35 PM

I've done some changes to the video board and added a ASRC with spdif out to be able to run the front channels through a separate dac.

cb777 · 11th March 2004, 06:05 PM

Hello audiofan58,
When you modify the player's power supply (like replacing caps), did you discharge the cap before working on it? I might want to start working on them too.
thanks

audiofan58 · 12th March 2004, 08:06 PM

I didnt discharge the caps. Im new to this and didnt think to do that. Dumb mistake. I am having problems reading some SACD disks now. This seems to have started when I replaced 3- 2W resistors. Im not sure if its related or not. I want change some of the other caps but dont know which ones to change. The schematic is on backorder.

eganz · 12th March 2004, 10:16 PM

use a grounding strap...

Alfetta87 · 15th September 2004, 08:22 AM

Does somebody have a schematic of the DVD2900? Would like to work on mine too, even though I replaced already the OpAmps by AD825, which is already a huge improvement.

Cheers,
Dan

8th March 2004, 09:56 PM	#1
audiofan58 diyAudio Member Join Date: Mar 2004 Location: Amsterdam NY	Denon DVD 2900 mod Has anyone had any experience moding a Denon2900 player? So far I have installed soft recocovery diodes, resistors and BG caps in the power supply. I also installed Cardas connectors for Left/Right outputs, Burr Brown OP627 op amps, damping feet, and dampened the chassis (all the easiest stuff). I would like to go to the next step and replace the clock and anything else which will enhance the capabilities of this player. Any input is appreciated. Thank you.

9th March 2004, 02:20 AM	#3
Praudio diyAudio Member Join Date: Mar 2002 Location: Canada	You don't mention AC cord! A major step, on Denon DVD 3800. __________________ Praudio

9th March 2004, 11:25 AM	#5
audiofan58 diyAudio Member Join Date: Mar 2004 Location: Amsterdam NY	dvd2900 The improvements were immediate. First, I replaced the diodes and noticed the sound was much more open and a bit more punch in the bass. This was probably the most cost effective upgrade. The addition of BB 627 op amps made a nice improvement also. Highs and midrange were much more defined and fluid. I upgraded the power cable with one which I made. I used Caroll 10 AWG cable the Marinco and Wattgate connectors. I also installed a new silver IEC connector on the unit and BG's in the PS. It has much more bass now than when I started but is still lacking in the lower end. Im not sure if it is a switching PS or not. Thanks for the replies....

15th September 2004, 08:22 AM	#10
Alfetta87 diyAudio Member Join Date: May 2003 Location: Between northpole and southpole	DVD 2900 Schematic Does somebody have a schematic of the DVD2900? Would like to work on mine too, even though I replaced already the OpAmps by AD825, which is already a huge improvement. Cheers, Dan __________________ It is worth to keep your mouth shut and let people think you’re stupid; rather than to open it and thus eliminate any doubts...

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9th March 2004, 01:49 AM	#2
eganz diyAudio Member Join Date: Sep 2003 Location: MN	and the sonic effects of your changes were ...

11th March 2004, 05:35 PM	#6
A 8 diyAudio Member Join Date: Mar 2003 Location: Gothenburg	I've done some changes to the video board and added a ASRC with spdif out to be able to run the front channels through a separate dac.

11th March 2004, 06:05 PM	#7
cb777 diyAudio Member Join Date: Mar 2004 Location: .	Hello audiofan58, When you modify the player's power supply (like replacing caps), did you discharge the cap before working on it? I might want to start working on them too. thanks

12th March 2004, 08:06 PM	#8
audiofan58 diyAudio Member Join Date: Mar 2004 Location: Amsterdam NY	I didnt discharge the caps. Im new to this and didnt think to do that. Dumb mistake. I am having problems reading some SACD disks now. This seems to have started when I replaced 3- 2W resistors. Im not sure if its related or not. I want change some of the other caps but dont know which ones to change. The schematic is on backorder.

12th March 2004, 10:16 PM	#9
eganz diyAudio Member Join Date: Sep 2003 Location: MN	use a grounding strap...

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