papa and mother with litle son. happyAleph family - 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 3rd June 2006, 08:07 PM   #1
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
Default papa and mother with litle son. happyAleph family

I have build many amps but finding no inerest to put in the internet-it is full of nice finished amps. today I worked with aleph monos and accidently put to one of my trusty aleph 5. take phone and did some photos
4 years ago zen v4 was a big amp. 3 years ago aleph 5 was realy big amp comparing with zen.

now the same massive aleph 5(800va toroid, 100mm fins, 420x 165x 420mm

does not seems so big comparing to my new aleph x monos
Attached Images
File Type: jpg aleph monos vs aleph 5.jpg (96.8 KB, 897 views)
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 3rd June 2006, 08:09 PM   #2
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
and another one
Attached Images
File Type: jpg baby aleph.jpg (90.0 KB, 847 views)
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 3rd June 2006, 08:37 PM   #3
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
here is my protype aleph x amps. they are smaller and have only 1.6kva toroids and only 16fets per channel . 23.4v rails 12Amps. are also made from 12mm aliuminium , is 500x650x165mm each. 100mm fins.
they are runing each at 618Wats with no problems. power - 116w/8ohms 210wats/4ohms 250wats.3ohms 160w/2ohms 80wat 1 ohm well not realy cold .but after 3 hours I can put hand whenever I want and hold it for a 10-20seconds without discomfort. they has absolute ofset 3.3V and at speakers terminals 80mV. in foto not seens put there are point to point wirring. looks terrible

in combo (with 99.97% silver wire to speakers and interconcts , fully balanced dac based on 4 x pcm 63p-k with 6.0 V RMS balanced output,passive dact attenuator ) threy make my wilson audio watt puppy shake the walls . they moove a lot of air like high curent b class push pul ,but they do it with so musical easy comon to aleph s and speed . spped is superb. shaming aleph 5 in that respect very much. no mater is it sacd thaikovsky overture or LP orchestra they shine with superb resoliution no coloroations and gret thunder speed and control. in fact they are too powerful fro wilsons. I even did not tried to listen at 80% or so. maybe I will reuce rails to 20V and bias to 10A.
I have some complains about sounstage but thhese probably I will fix it when adjusting better..

I can believe that the same amp with the same parts with 22v rails and 5A bias can sound so medium, and the same amp put in monos with 12A bias per channel so juicy ,so much air and so Poweful!!

I wonder why nelson do not make higly biased apms for low impedanse speakers? in XA 200 they can put 100w highly biased amp. and I can bet a farm that they will not be much worse that theese newdays opamps input stage based marks levisnosn and krells thunders

thanks you guys all ,especialy One And the Only
Attached Images
File Type: jpg prototypes mono.jpg (96.6 KB, 811 views)
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 4th June 2006, 03:39 PM   #4
grataku is offline grataku  United States
diyAudio Member
 
Join Date: Dec 2000
Location: -
Congrats,
It looks like the family may need a bigger house...
  Reply With Quote
Old 4th June 2006, 05:26 PM   #5
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
luckily they have they own 44sq metter flat. where threy live with 5 to 10 pairs speakers(at the mean time only 4 pairs) lot of capacitors, resistors wood working tools and speaker drivers . at evening I kiss every and leave them here. always turn off- for better sleeping and resting. its my dedicated work place which I rent for audio hobby. pour neightboards what can i say..
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 4th June 2006, 05:51 PM   #6
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
choky? where are you? my amp is so ugly that you probabaly even shocked ? I see yours modest coments on every pass diy

and seriuosly is anybody ou here has high bias versions built. I would like fine tune mine because I just add fets and diferent source ressitors. all says that and other parts should be changed..
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 4th June 2006, 06:01 PM   #7
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
Quote:
Originally posted by elviukai
choky? where are you? my amp is so ugly that you probabaly even shocked ? I see yours modest coments on every pass diy

and seriuosly is anybody ou here has high bias versions built. I would like fine tune mine because I just add fets and diferent source ressitors. all says that and other parts should be changed..

Your amp is not ugly.. I call it in progress / fine tuning stage
  Reply With Quote
Old 4th June 2006, 06:09 PM   #8
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
sadly but I say also the same for all but lets face- most of them stays on this stage. I haved few finished with laser mashines like comercial amps. but stay unfisnished is safier for them. because always there are people arround who heard them with my spekers want them to buy/trade. so my excuse is -they are not finished yet
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  Reply With Quote
Old 4th June 2006, 10:02 PM   #9
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 jleaman



Your amp is not ugly.. I call it in progress / fine tuning stage

what ?

they ARE ugly!!!







(choky was sinnbined for two days just because this sort of comments )



I like this sort of ugliness ,where you can see numerous hours of thinking and dreaming, just maybe little less hours in exact hand working .................


love and passion is what counts
__________________
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 5th June 2006, 11:51 PM   #10
diyAudio Member
 
elviukai's Avatar
 
Join Date: Apr 2003
Location: EU- Electronic Union country
thanks choky, I feel much better now

by the way playing at very loud levels where is tremendous low octaves transients I have feeling that my aleph x is runing out of energy. the aleph 5 was the same, I even noticed that led diodes become blink then. now there no diodes but the same out of power sounds.. absolute ofset is 1-1.5v

I am using for each channel- 1.6kW trafo and 330 000uf. 12A bias 22.5V rails could it be transformer or not enought capacity?
__________________
natural sound reproduction from traditional dynamic drivers?!! come on.. no no, it can be.. it must be!..
  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
Supply is the mother of invention, tl pvc brucegseidner Full Range 24 27th June 2010 08:26 PM
mother board!!!! brooks1 Digital Line Level 2 2nd February 2009 04:38 PM
Mother of all Subwoofers Circlotron Subwoofers 5 21st July 2006 08:29 AM
The Mother of the Beast Sam Solid State 0 24th June 2001 02:59 AM


New To Site? Need Help?

All times are GMT. The time now is 08:03 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