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 26th August 2003, 05:34 PM   #1
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Question Aleph30 with IRFP044's: Bad Idea?

Hi all,

I'm planning to build an Aleph30 and I happen to have a number
of IRFP044's on hand.

The rails of the A30 are at +/-25V. Given the drain-to-source
breakdown voltage of only 60V for the IRFP044's, I suspect they
may not be suitable.

Should I give the 044's a try or would that be flirting with
disaster? Or perhaps I should just get some IRFP240's?

Thanks,
Dennis
  Reply With Quote
Old 26th August 2003, 06:43 PM   #2
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
I'd rather try a Aleph-X, which has lower rails for a given power and is claimed by someone to be even better than the regular Alephs.

I'll try it myself and then will compare with my Aleph 30.

Cheers

Andrea
  Reply With Quote
Old 26th August 2003, 08:24 PM   #3
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I believe 044's will work just fine. Might have to adjust
any Drain-Gate compensation.
  Reply With Quote
Old 26th August 2003, 11:13 PM   #4
wijgers is offline wijgers  Netherlands
diyAudio Member
 
Join Date: Aug 2003
Location: Near Rotterdam
Question IRF244

Where to find them?????

Hi, Im a Newbe in making Amplifiers, but after some reading of several threads it came a bit clear to me. How the circuits are working and what everything stands for.
I want to upgrade my system (Commercial NAD 317 integrated amp, NAD 514 CD, Dali 505 Speakers, in which the filter allready had ben changed)
Amp has an extra set of Pre out.

I was thinking about A 30-40 Watt Amp. Don't need that much and planning to get rid of the amp by making an BOSOZ.

So me eyes felt on the Aleph3 / 30(thanks to MR Pass). and the A40. First I will try to make the Aleph. If that works, make it a continued story.

But in a store Near Rotterdam (dordrecht) Ther where no IRF 244. :bawling

Does anybody in the Netherlands where to buy the Matched IRF244, or are there substututes without makking any changings off bias and current gain?

Nelis:
  Reply With Quote
Old 27th August 2003, 02:27 AM   #5
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Thanks for the advice! Will give the 044's a try.

Cheers,
Dennis
  Reply With Quote
Old 27th August 2003, 05:48 AM   #6
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Default Re: IRF244

Quote:
Originally posted by wijgers
Where to find them?????
The IRF244 is obsolete.
You could try IRFP244.
It has about the same specs as the IRF244.
Ooh, and welcome to the forum.

/Hugo
  Reply With Quote
Old 27th August 2003, 08:00 AM   #7
edm is offline edm  Netherlands
diyAudio Member
 
Join Date: Nov 2002
Location: The top of the Netherlands
@wijgers:
Go here:
http://forum.hifi.nl/index.php?act=ST&f=27&t=1417&

Most of the people there also post here, so perhaps they answer here.
(see e.g. What?... Another Aleph 5? or Another Aleph-X coming up!) Perhaps you could also try to contact them through this forum.
  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
IRFP044 for sale kilowattski Swap Meet 4 4th August 2005 06:31 AM
IRFP044 circuit without N's? kapnk Solid State 2 13th May 2005 07:17 PM
WTB a few IRFP044's kapnk Swap Meet 1 12th May 2005 12:26 AM
Irfp044? Tazzy Pass Labs 16 12th March 2004 08:33 PM


New To Site? Need Help?

All times are GMT. The time now is 07:13 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