Help To Decide Which Aleph To Byilt - 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 8th July 2004, 11:52 AM   #1
nikosgr is offline nikosgr  Greece
diyAudio Member
 
Join Date: Feb 2003
Location: athens
Default Help To Decide Which Aleph To Byilt

hi to all

i intent to built an ALEPH, but i cant decide which one to built :ALEPH 2 or ALEPH 4 ?
My speakers have the below characteristics:
1) 6 OHM
2) 92 db/1w/1m
3) rated at about 300w

i have two transformers rated at 1500 VA 235VAC primary 2X43VAC secondary.

Waiting for any suggestions.
  Reply With Quote
Old 8th July 2004, 03:50 PM   #2
diyAudio Member
 
Join Date: Oct 2002
Location: Holland, The Hague
6 ohm nominal? More important is what is the minimal impedance and also the phase shifts. Is the 2 not better in driving difficult loads?
__________________
Is that all there is?
  Reply With Quote
Old 8th July 2004, 04:42 PM   #3
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
i thought so, thats why im doing the aleph2 for my 4 ohm nominal (1 ohm minimum) speakers.

Nelson always says that the Aleph2 is HIS favorite.

Quote:
Originally posted by Duck-Twacy
6 ohm nominal? More important is what is the minimal impedance and also the phase shifts. Is the 2 not better in driving difficult loads?
  Reply With Quote
Old 8th July 2004, 05:09 PM   #4
diyAudio Member
 
Join Date: Oct 2002
Location: Holland, The Hague
With 1 ohm minimum I would make an Aleph 1 or maybe a very high biased Aleph-X.

Or make other speakers
__________________
Is that all there is?
  Reply With Quote
Old 8th July 2004, 06:40 PM   #5
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
well, im doing an aleph2 and aleph3 for each speaker, with active crossovers. so, it should be fine.

they are planars, so they have a pretty easy load, its just low resistance and low efficiency. so they need stable power.

aleph-x's dont work well with my speakers from what i understand. i didnt think they liked low loads. i know they are stable, but i need the power doubling too. to get the power i need, it would be HUGE and heat the house.
  Reply With Quote
Old 8th July 2004, 08:33 PM   #6
diyAudio Member
 
Join Date: Oct 2002
Location: Holland, The Hague
Let me guess, Apogee?
__________________
Is that all there is?
  Reply With Quote
Old 8th July 2004, 09:16 PM   #7
cowanrg is offline cowanrg  United States
diyAudio Member
 
cowanrg's Avatar
 
Join Date: Apr 2002
Location: Lafayette, CO
Send a message via AIM to cowanrg
nope, magnepan.

apogees have nominal impedences of 1 or 2 ohms and can dip into fractions.
  Reply With Quote
Old 8th July 2004, 09:50 PM   #8
diyAudio Member
 
trigon's Avatar
 
Join Date: May 2002
Location: Canada
Hi nikosgr

I have KEFs 108.2 with 4 ohm nominal impedance and 92dB my Aleph 4s are singing like a birds. Fill free to ask any question as I am more than fine with Aleph 4 (monoblocks)

Here is the link

Yet another Aleph 4

Trigon
  Reply With Quote
Old 9th July 2004, 12:21 PM   #9
nikosgr is offline nikosgr  Greece
diyAudio Member
 
Join Date: Feb 2003
Location: athens
Hi All

thanks for the replies.

Here is a picture of my living-room that is not acoustically treated
(WAF FACTOR!!!!!!!!!!!!!)35 square meters

the speakers minimum resistance is about 4 OHM

trigon hi
i have seen your work
EXCELENT!!!!!!!!!! AND VERY INSPIRING

my amp is an old musical fidelity P-270/2 it has been upgraded

i believe that constructing an aleph will scale up the sonic performance of my setup

but still i am confused ALEPH 2 or ALEPH 4 they are much alike.
in terms of current output and power which one will have more efficient control over the speakers ??????
Attached Images
File Type: jpg hpim0035a.jpg (46.5 KB, 169 views)
  Reply With Quote
Old 9th July 2004, 12:27 PM   #10
nikosgr is offline nikosgr  Greece
diyAudio Member
 
Join Date: Feb 2003
Location: athens
the amp
Attached Images
File Type: jpg hpim0026a.jpg (84.2 KB, 181 views)
  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
OB or TL - Help me decide jim rose Full Range 13 22nd March 2007 09:10 AM
Please Help!!! me decide on a chipamp Morning_Star Chip Amps 4 14th September 2006 02:59 PM
Help me decide on an OP-amp Cradle22 Parts 16 25th April 2005 04:31 PM
Aleph - Can You Give Me A Hand To Decide Wich One To Build? b_online Pass Labs 5 10th May 2003 03:22 AM


New To Site? Need Help?

All times are GMT. The time now is 06:56 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