Aleph 5 problem,or.... - 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 22nd February 2006, 09:29 AM   #1
diyAudio Member
 
Join Date: Jun 2005
Location: Skopje,Macedonia
Default Aleph 5 problem,or....

Dear All,
As I posted, last week, I have finished two monoblocks of Aleph 5. They are working OK except that Iím hearing some noise (probably bad ground). Yesterday while playing some music Iíve noticed that bas drivers (on one loudspeaker - Mission 753) are ďdeadĒ. Could somebody tell me is it possible that I have some problem with amplifier???
One questions more. Iím using standard electrolytic capacitors (those of 220uF-YAGEO). I have bypassed them with 0.470nF/400V WIMA-MKP capacitors, and I need to know is this OK???
Thank you at advance,
Toni
  Reply With Quote
Old 22nd February 2006, 09:40 AM   #2
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default Re: Aleph 5 problem,or....

Quote:
Originally posted by tonistefanovski
Dear All,
As I posted, last week, I have finished two monoblocks of Aleph 5. They are working OK except that Iím hearing some noise (probably bad ground). Yesterday while playing some music Iíve noticed that bas drivers (on one loudspeaker - Mission 753) are ďdeadĒ. Could somebody tell me is it possible that I have some problem with amplifier???
One questions more. Iím using standard electrolytic capacitors (those of 220uF-YAGEO). I have bypassed them with 0.470nF/400V WIMA-MKP capacitors, and I need to know is this OK???
Thank you at advance,
Toni

first-measure have you DC on out of that (suspicious) channel of Aleph;
if not-that's just coincidence;
are bass spks in that Mission box in series? if they are,if just one loose conductivity of flex wire from basket terminal to cone-both are silent
if they are in parallel , check them both.....


anyway-measure Aleph first......

regarding caps-they can have only sound related influence
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 22nd February 2006, 09:44 AM   #3
diyAudio Member
 
Join Date: Jun 2005
Location: Skopje,Macedonia
Choky thank you for your replay. I have messured voltage at the output terminals. They are Ok (one chanel 8-10mV and the other one 18-25mV)
  Reply With Quote
Old 22nd February 2006, 09:54 AM   #4
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
now-take scrdrvr and pull that woofs out.......

tip for test:
connect 1V5 battery to speaker terminal
gently (one by one) push cone of bass (you can use cup as a "pusher" )
likely-if just flexy wire is out,in one moment you'll have sort of contact and spk will work for moment.....
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 22nd February 2006, 09:58 AM   #5
diyAudio Member
 
Join Date: Jun 2005
Location: Skopje,Macedonia
Yes Choky, I've did that.
Thank you,
Toni
  Reply With Quote
Old 22nd February 2006, 09:59 AM   #6
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally posted by tonistefanovski
Yes Choky, I've did that.
Thank you,
Toni

you posted during my editing...
reread
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 22nd February 2006, 10:12 AM   #7
diyAudio Member
 
Join Date: Jun 2005
Location: Skopje,Macedonia
Yesterday, when I've noticed the problem I've removed the speakers out. I didn't make a test with 1V5 battery, but I've pushed the cones gently and noticed that they are not working good, there is some noise (like grrr...grrrr), so I'm preaty sure that they are "dead". I will fix them, that is not a problem, I was thinking that I have some problems with an amplifier.
thank's
  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
problem with R44 on Aleph P 1.7 Stefanoo Pass Labs 15 9th October 2007 12:57 PM
Problem with aleph p 1.7 gabflo Pass Labs 7 2nd September 2006 05:50 PM
Problem with Aleph 2 ppesa Pass Labs 1 31st January 2006 07:44 PM
Aleph 2 problem!Help... nar Pass Labs 14 1st June 2003 03:42 PM
Aleph 5 PSU problem please help? xsnailx Pass Labs 10 4th March 2003 06:28 PM


New To Site? Need Help?

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