What amp to build? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 2nd November 2004, 10:20 PM   #1
diyAudio Member
 
Join Date: Aug 2004
Location: Finland
Default What amp to build?

I have transformer at 2x26 ac 200w and i need amp to my 4ohm subwoofer. I would prefer a simple design (complicated circuits will also be suitable). Any schematics with cheap parts would be nice (like BD249, TIP35, etc).

I searched here and there quite a bit but didn't find just right amp for 4 ohm speaker, what is by the way in reflex box.

First post so excuse my n00bness.
  Reply With Quote
Old 3rd November 2004, 04:18 PM   #2
diyAudio Member
 
acenovelty's Avatar
 
Join Date: Aug 2004
Location: SF Bay Area
It doesn't get much simpler than this, small parts count, point to point wiring works OK.

http://www.national.com/an/AN/AN-446.pdf

Look on page 6 for the amp application.


Prosit
__________________
Two people can keep a secret if one of them is dead.
  Reply With Quote
Old 4th November 2004, 06:42 AM   #3
diyAudio Member
 
Join Date: Aug 2004
Location: Finland
Yep, indeed nice and simple chip, but wery wery hard to get and probably costly, at least here in finland.

But i was thinking of discrete components, not chipamps. Because in that voltages per rail it would be problem to 4ohms in most chipamps (too much dissipation). I have OPA541 and OPA549 chips, but they don't like +-37v. OPA541 is AP model which is +-35v.

Don't mind if it is complicated circuit, designing PCB is not problem, i'm just laisy, that's why simple in nice.

Have anybody tested this circuit, what is purpose of the diodes (protection?)?
Attached Images
File Type: png simple.png (7.9 KB, 308 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
I want to try and build my own DAC gareth Digital Line Level 3 3rd July 2009 03:20 PM
ZV9 build ingi Pass Labs 8 6th August 2006 02:40 PM
build my first full ranger,let's build another one:a small fullrange high end pc-spea then_dude Full Range 2 30th November 2005 07:54 AM
Do i need to build main supply (240v) filter?Or build power distribution? thomgun_lc Chip Amps 9 16th September 2005 09:52 AM


New To Site? Need Help?

All times are GMT. The time now is 02:39 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