Denon 2900 clock upgrade?

simeon_noir · 22nd November 2007, 10:29 AM

I have a 2900 being used almost exclusively as a digital transport. Mods so far are a PSU rebuild and a Audiopraise Vanity module. I am now able to listen to all media via my Benchmark DAC1 and am very happy with the results thus far. One characteristic the player has retained through the mods is the fact it takes 2-3 hours to really come on song. I have read here that some do not consider a clock upgrade to be worthwhile on this player, however I am thinking that a more stable clock would help it deliver its best sooner. I know that one of this players frailties is the reliability of the laser pick ups and so would not want to leave it on 24/7.

Opinions/experiences please.

clm811 · 24th November 2007, 03:49 AM

I've had the clock replaced on my DVD2900, and even with the stock power supply (albeit with larger caps after the +/-9v linear regulators), it has made a SIGNIFICANT improvement in the performance of this unit as a player, and also noticeable improvement as a transport is heard through my 192/24 DAC.

BTW, would you please describe in detail what your power supply rebuild entailed?

-chas

simeon_noir · 24th November 2007, 04:50 PM

Hi,
good to hear that a clock upgrade will be beneficial. I will be looking at the player again after I complete my present project (a turntable rebuild). The upgrade involved replacing all of the capacitors with Panasonics (I think!) and 5 diodes replaced with much beefier items. I actually got the PSU done professionally despite having the skills myself because I was very busy at the time.

clm811 · 29th November 2007, 09:17 PM

Can you please specify which diodes were replaced?
Thanks.

simeon_noir · 1st December 2007, 05:50 PM

It was the four rectifier diodes and another of the same type close by.

clm811 · 2nd December 2007, 07:29 AM

Simeon wrote:

Quote:

It was the four rectifier diodes and another of the same type close by.

Please be more specific- were these the diodes before(D901-904) or AFTER the Switching Transformer (D910-914)?

I am attaching a schematic diagram to help specify...

Thanks,
-chas

p.s. see my other DVD-2900 post in "Digital" forum

clm811 · 30th December 2007, 05:04 PM

THANK YOU

I just learned from another member that the diodes to change are D901-904 and the cap, C905 may also be upgraded to Black Gate or other high grade, high voltage, Low-ESR type.

There is a another thread about DVD2900 Power supply upgrades

[URL=http://www.diyaudio.com/forums/showthread.php?s=&postid=1373300#post1373300[/URL]

I will detail other mods as they are made...
Happy New Year!

jtsaudio · 30th December 2007, 06:56 PM

I'm interested in trying some mods
Can anyone here help me find the full schematic?
JT

clm811 · 31st December 2007, 08:58 AM

In celebration of completing my system,
I'm giving away my extra mod parts.
See my post at DVD2900 Tweaks:
Denon DVD2900 tweaks

Happy New Year!

-chas

clm811 · 15th January 2008, 07:10 AM

Hi all.
On another thread I will soon be reporting on three different DVD2900 Mods and doing listening comparisons between them...Stay tuned

Good Listening & Happy New Year!

-chas

22nd November 2007, 10:29 AM	#1
simeon_noir diyAudio Member Join Date: Sep 2007	Denon 2900 clock upgrade? I have a 2900 being used almost exclusively as a digital transport. Mods so far are a PSU rebuild and a Audiopraise Vanity module. I am now able to listen to all media via my Benchmark DAC1 and am very happy with the results thus far. One characteristic the player has retained through the mods is the fact it takes 2-3 hours to really come on song. I have read here that some do not consider a clock upgrade to be worthwhile on this player, however I am thinking that a more stable clock would help it deliver its best sooner. I know that one of this players frailties is the reliability of the laser pick ups and so would not want to leave it on 24/7. Opinions/experiences please.

30th December 2007, 05:04 PM	#7
clm811 diyAudio Member Join Date: May 2002 Location: Northern California	DVD2900 Tweaks THANK YOU I just learned from another member that the diodes to change are D901-904 and the cap, C905 may also be upgraded to Black Gate or other high grade, high voltage, Low-ESR type. There is a another thread about DVD2900 Power supply upgrades [URL=http://www.diyaudio.com/forums/showthread.php?s=&postid=1373300#post1373300[/URL] I will detail other mods as they are made... Happy New Year!

31st December 2007, 08:58 AM	#9
clm811 diyAudio Member Join Date: May 2002 Location: Northern California	Free Stuff! In celebration of completing my system, I'm giving away my extra mod parts. See my post at DVD2900 Tweaks: Denon DVD2900 tweaks Happy New Year! -chas

15th January 2008, 07:10 AM	#10
clm811 diyAudio Member Join Date: May 2002 Location: Northern California	New thread on DVD2900 mods Hi all. On another thread I will soon be reporting on three different DVD2900 Mods and doing listening comparisons between them...Stay tuned Good Listening & Happy New Year! -chas

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

24th November 2007, 03:49 AM	#2
clm811 diyAudio Member Join Date: May 2002 Location: Northern California	I've had the clock replaced on my DVD2900, and even with the stock power supply (albeit with larger caps after the +/-9v linear regulators), it has made a SIGNIFICANT improvement in the performance of this unit as a player, and also noticeable improvement as a transport is heard through my 192/24 DAC. BTW, would you please describe in detail what your power supply rebuild entailed? -chas

24th November 2007, 04:50 PM	#3
simeon_noir diyAudio Member Join Date: Sep 2007	Hi, good to hear that a clock upgrade will be beneficial. I will be looking at the player again after I complete my present project (a turntable rebuild). The upgrade involved replacing all of the capacitors with Panasonics (I think!) and 5 diodes replaced with much beefier items. I actually got the PSU done professionally despite having the skills myself because I was very busy at the time.

29th November 2007, 09:17 PM	#4
clm811 diyAudio Member Join Date: May 2002 Location: Northern California	Can you please specify which diodes were replaced? Thanks.

1st December 2007, 05:50 PM	#5
simeon_noir diyAudio Member Join Date: Sep 2007	It was the four rectifier diodes and another of the same type close by.

30th December 2007, 06:56 PM	#8
jtsaudio diyAudio Member Join Date: Dec 2007	I'm interested in trying some mods Can anyone here help me find the full schematic? JT

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Denon 2900 clock supply hookup.	D.A.R.R.Y.L.	Digital Source	5	5th January 2006 11:54 AM
Denon 2900 strange clock behaviour	D.A.R.R.Y.L.	Digital Source	9	25th December 2005 11:26 AM
Best method of replacing denon 2900 clock	D.A.R.R.Y.L.	Digital Source	6	2nd December 2005 04:01 PM
Denon DVD 2900 mod	audiofan58	Digital Source	9	15th September 2004 08:22 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read