DAC in JVC AX-Z911 vs. K2 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

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
Reply
 
Thread Tools Search this Thread
Old 7th October 2011, 09:49 PM   #1
diyAudio Member
 
Join Date: Oct 2011
Default DAC in JVC AX-Z911 vs. K2

Hello,

The short question:

Can the DAC performance in the AX-Z911 (non K2 DAC) be improved? At what expense of time and effort? My understanding of K2 is that it also does some jitter cleanup. If my CD transport delivered a low-jitter signal, how does this DAC then otherwise compare to K2?

The longer story:

My first "neat" amp is this AX-Z911BK I purchased around 1995. I just picked up a service manual for it, and have considered replacing the caps etc. I have not used the amp in a while but it worked perfectly last time. I just assume that the caps will go eventually.

When I was first doing research on it in the 1990's, I spoke to a rep at JVC who stated "what you really want is the AX-Z1010 with the K2."

I was happy to use my AX-Z911 for quite some time because it sounded great to me. Since then I have different gear that I am using, but the AX-Z911 still has a special place in the collection as being my first unique amp.

However when I consider keeping and restoring it, the seeds of discontent sewn by that JVC rep make me wonder if I should choose another path. I have seen many other JVC devices with the K2 DAC.

I have heard that the AX-Z911 is pretty good, but that it has an "outdated" DAC on board. As you may know, the amp uses the DAC info to predict current need for their "class A" type operation. I bothered me that if the DAC is not ideal, the benefit of the design is reduced. Also, that main feature only applies to the digital inputs, it is a regular A/B integrated amp for the other inputs.

Options:
-Keep the amp, use it for display, no work involved
-Restore the amp as is, just for fun
-Restore the amp and upgrade DAC
-Acquire a AX-Z1010 and sell this one
-Keep the amp and get the 1010 CD player so I can say "I have K2" (I understand the 1010 with Burr Brown is better than 1050 with bitstream?)
-Ignore K2 completely and just use my other DACs

Any information/opinions are appreciated! Thanks!
  Reply With Quote
Old 18th October 2011, 01:28 PM   #2
Lautar is offline Lautar  Ukraine
diyAudio Member
 
Join Date: Feb 2009
Location: Ukraina
Send a message via AIM to Lautar Send a message via MSN to Lautar Send a message via Yahoo to Lautar
i have jvc axz1010
dac in it good
I want to try tweak
I search servisemanual

please send me,tweak_cd@i.ua
  Reply With Quote
Old 19th October 2011, 12:38 PM   #3
Lautar is offline Lautar  Ukraine
diyAudio Member
 
Join Date: Feb 2009
Location: Ukraina
Send a message via AIM to Lautar Send a message via MSN to Lautar Send a message via Yahoo to Lautar
Philippe, thx

servisemanual is ok

I want to try tweak
  Reply With Quote
Old 30th November 2011, 09:34 PM   #4
diyAudio Member
 
Join Date: Oct 2011
Hi! Thanks for the reply. I only have a paper copy of the manual for the ax-z911. Are you making a tweak on your ax-z1010? How are the results? I have put my ax-z911 evaluation on hold for now, and am looking into a separate CD player instead to play with.
  Reply With Quote
Old 10th April 2012, 08:37 AM   #5
diyAudio Member
 
Join Date: May 2005
Location: Rotterdam Netherlands
Quote:
Originally Posted by Lautar View Post
i have jvc axz1010
dac in it good
I want to try tweak
I search servisemanual

please send me,tweak_cd@i.ua
I have the service manual for the AX-Z1010, but copying it would be very hard. I would need to do it at work, as I do not have an A3 scanner at home and it would take more time than I have available. Not sure if it has pages even bigger than A3...

Can I help you with anything specific? Scanning a few pages should be doable.

(In time I may try to scan it completely, but this won't be any time soon).
  Reply With Quote
Old 10th April 2012, 01:58 PM   #6
Lautar is offline Lautar  Ukraine
diyAudio Member
 
Join Date: Feb 2009
Location: Ukraina
Send a message via AIM to Lautar Send a message via MSN to Lautar Send a message via Yahoo to Lautar
Quote:
Originally Posted by ric-paul View Post
I have the service manual for .

Can I help you with anything specific? Scanning a few pages should be doable.

(In time I may try to scan it completely, but this won't be any time soon).
no, thanks

a have manual - bat amp have mechanical damage
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
JVC AX-Z911 right ch. broken, caps gone, voltage? TuomasH Solid State 11 9th July 2011 09:16 PM
JVC AX-44 is the bomb! toroneza Solid State 3 25th January 2011 06:03 PM
Jvc k2 xl-z1010tn georgehifi Digital Source 14 8th May 2010 09:47 AM
JVC AX-2 schematic needed mikee55 Solid State 2 25th June 2006 12:36 PM
Jvc Ax-r450bk cunningham Solid State 3 19th August 2004 01:18 AM


New To Site? Need Help?

All times are GMT. The time now is 01:18 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2