The Penultimate Zen (ZenV4) with passive preamp - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 10th May 2005, 04:44 PM   #1
Sella is offline Sella  Finland
diyAudio Member
 
Join Date: Aug 2004
Location: Espoo
Default The Penultimate Zen (ZenV4) with passive preamp

I am building this power amp and just wondering does it work OK without preamplification? My sources are regular a-piece-of-crap Sony cd-player and a diy phono stage.

So my question is should I build an active preamp or will this one go just fine with a passive one?

Ps. If you are interest on my chassis design then you should follow this link .

Thank you for answering by advance!
  Reply With Quote
Old 10th May 2005, 05:44 PM   #2
diyAudio Member
 
kilowattski's Avatar
 
Join Date: Aug 2003
Location: Long Island, New York
I am not sure if the Zen IV has a whole lot of voltage gain.
__________________
-----------------------------------------------
Kilowattski
  Reply With Quote
Old 10th May 2005, 05:54 PM   #3
Stefano is offline Stefano  Italy
diyAudio Member
 
Join Date: Jun 2002
Location: Cagliari, Sardinia
Hello, i've alredy built the penultimate and momentanely i use it without a pre since i' reparing my bzls and i use the variable output of the cd player and directly connected to the output of my phono pre, it goes quite good, but it's not the right way...
__________________
Let's make something special
  Reply With Quote
Old 10th May 2005, 06:01 PM   #4
diyAudio Member
 
Join Date: Dec 2002
Location: Houston
Default Zen V4

The Zen V4 needs a good active preamp to sound its best.

George
  Reply With Quote
Old 10th May 2005, 08:01 PM   #5
Sella is offline Sella  Finland
diyAudio Member
 
Join Date: Aug 2004
Location: Espoo
Any suggestions what that "good active preamp" might be? Anyone?
  Reply With Quote
Old 10th May 2005, 10:40 PM   #6
eLarson is offline eLarson  United States
diyAudio Member
 
eLarson's Avatar
 
Join Date: Aug 2002
Location: Gaithersburg, MD
I'm rather partial to the Bride of Son of Zen, myself.
__________________
Would a woodchuck bother to chuck MDF?
  Reply With Quote
Old 10th May 2005, 11:57 PM   #7
Banned
 
Join Date: Mar 2005
Location: Australia
sella
The Penultimate Zen (ZenV4) with passive preamp Post #1 I am building this power amp and just wondering does it work OK without preamplification? My sources are regular a-piece-of-**** Sony cd-player and a diy phono stage.

So my question is should I build an active preamp or will this one go just fine with a passive one?

Ps. If you are interest on my chassis design then you should follow this link .

Thank you for answering by advance!
--------------------------------------------------------------
you must first answear the question what is the purpose of a pre-amp
then you can make the decision on your own, there are wide range of views
regarding this question

now the phono stage needs an amp to raise the signal level to most other line
sources levels this would mean an extra small signal amp if there isnt one already built into your turntable which you could build into your power amp with no need for an extra pre-amp in a separate box all other sources should work
fine if not then again certain adjustment could be done in the power-amp too
  Reply With Quote
Old 11th May 2005, 06:25 AM   #8
diyAudio Member
 
Greg Erskine's Avatar
 
Join Date: Jan 2002
Location: Sydney/Australia
Quote:
Originally posted by mastertech
you must first answear the question what is the purpose of a pre-amp
then you can make the decision on your own, there are wide range of views
regarding this question

now the phono stage needs an amp to raise the signal level to most other line
sources levels this would mean an extra small signal amp if there isnt one already built into your turntable which you could build into your power amp with no need for an extra pre-amp in a separate box all other sources should work
fine if not then again certain adjustment could be done in the power-amp too [/B]
hi mastertech,

A couple of quick tips.

There is a "quote" check box on the botton right hand corner of each post. If you click on this before you select "post reply" you get a nice quote as above.

Also, the fullstop key is usually found somewhere bewteen the "M" and "shift" key on the right hand side of the keyboard. By using this properly, people may be able to understand what you are writing.

How about telling us a little about yourself.
__________________
Greg Erskine
  Reply With Quote
Old 11th May 2005, 07:03 AM   #9
tja is offline tja  Netherlands
diyAudio Member
 
Join Date: Feb 2004
Location: Leiden
Quote:
Originally posted by mastertech

.......
now the phono stage needs an amp to raise the signal level to most other line sources levels
........

Isn't that exactly what the phono stage is meant to do in the first place?

Take
  Reply With Quote
Old 11th May 2005, 07:12 AM   #10
steenoe is offline steenoe  Denmark
diyAudio Member
 
steenoe's Avatar
 
Join Date: Mar 2004
Quote:
I am building this power amp and just wondering does it work OK without preamplification? My sources are regular a-piece-of-**** Sony cd-player and a diy phono stage.
Most CD players cant deliver the voltage needed for a Zen. If memory serves me correct it needs 3 Volts min. Also, and just as important, the volume control on ****cd players kills the dynamic range when turned down. Thats why you always let the vol on the cd go at full throttle. I guess your phonostage needs additional amplification too. The best advice for you, is to built a BosoZ, like eLarson recommended.

Steen
  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
Passive Preamp HarryHaller Everything Else 208 31st August 2014 04:06 AM
F1 and a passive preamp? roscoeiii Pass Labs 10 10th May 2009 12:55 AM
cant find parts for ZENv4 (penultimate zen) in Brazil rafafredd Pass Labs 9 10th May 2006 08:11 PM
Passive Preamp Rarkov Analogue Source 77 15th April 2003 06:51 PM


New To Site? Need Help?

All times are GMT. The time now is 10:25 AM.


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