Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

1 Ohm For Aleph30
1 Ohm For Aleph30
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
Thread Tools Search this Thread
Old 30th May 2002, 10:53 AM   #1
gema is offline gema
diyAudio Member
Join Date: Sep 2001
Location: Europe, Slovenia
Default 1 Ohm For Aleph30

Hello Mr. Pass an the rest of DIY community,

I have recently finished Zen Revisited (http://www.passdiy.com/gallery/zenrev-p1.htm ) and my fingers are becoming restless again. Hope this is not some kind of DIY disease… Since I have no patience and Penultimate Zen is not born jet, I throw myself into Aleph30. Only Mr. Pass knows if I made the right decision…

As you can see from Zen Revisited I’m some kind of design maniac and I have some ideas for Aleph30 also.

My two questions are:
1. If the maximum output current for Aleph30 is 5A then we have on resistors R22-R27 2 (0,47/6 x 5 x 5) watts max. Why we need 18 (6 x 3W) watts? Can this resistors be, let’s say, 1 watt? I know that is a hole in my thinking, but I don’t know where…
2. Can I replace 0,47ohm resistors with 1ohm resistors in parallel? For R22-R27 bank I would like to use 13 1ohm resistors and for each of R34-R39 resistors 2 1ohm resistors. Is this OK?

Thanks and regards.

Have a nice day.
  Reply With Quote
Old 30th May 2002, 05:36 PM   #2
GRollins is offline GRollins  United States
diyAudio Member
Join Date: Feb 2001
Location: Columbia, SC
1--You don't want to operate parts too close to their limits. That said, resistors will take more punishment than, say, transistors.
2--Changing the resistor values will depend on the load you intend to drive. Don't forget that even nominal 8 ohm speakers frequently have sharp dips in their impedance curves at certain frequencies.

  Reply With Quote
Old 30th May 2002, 07:40 PM   #3
Nelson Pass is offline Nelson Pass  United States
The one and only
Nelson Pass's Avatar
Join Date: Mar 2001
1 Ohm For Aleph30
I use the 3 watt because Panasonic makes a nice
part, and I use them everywhere.

If your calculation shows that less than 1 watt will
be OK, that's fine with me.
  Reply With Quote


1 Ohm For Aleph30Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
BJT for Aleph30 same Pass Labs 1 5th May 2007 03:48 PM
Help Aleph30 Kooka Pass Labs 9 18th February 2007 02:03 PM
Aleph30 very very hot arold19 Pass Labs 7 12th February 2005 01:55 PM
Aleph30 Mano Pass Labs 3 7th January 2002 06:01 PM

New To Site? Need Help?

All times are GMT. The time now is 12:15 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio