Cheapest Solution - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 1st August 2005, 10:47 PM   #1
diyAudio Member
Join Date: Dec 2004
Location: Illinois
Default Cheapest Solution

I need:
2 x 15watts @ 6ohm
1 x 30 watts @ 4 ohm

What is the cheapest way for me to do this, will be ran off of 120v mains.
  Reply With Quote
Old 1st August 2005, 11:37 PM   #2
sam9 is offline sam9  United States
diyAudio Member
sam9's Avatar
Join Date: Jun 2002
Location: Left Coast

Something like this:

or this:

Cheap was the criterion, right? Or did you mean something you could build?

Then try a pair of these:

Just follow the application note.

A 15-0-15 transformer will let you build a power supply will give the appropriate rail voltage. You will probably want a VA rating of 100 for two channels of heavy 4-ohm use. Use am enclosed E-I type - at this power level they are common and dirt cheap. You should be able to find these in Digikey or Jameco l.

If you want something discrete rather than an IC amp, look a G,Randy Slone "Audiophiles Project Source Book", page 149. Increase the transformer rating as decribed and add a third parrallel output device. (Or maybe substitute TIP3055/2955). Ibuilt this exactly as decribed and it quite nice. It will blow away the IC-amps without mercy.
  Reply With Quote
Old 2nd August 2005, 02:52 AM   #3
diyAudio Member
Join Date: Dec 2004
Location: Illinois
I meant cheapest DIY solution, I am planning on putting this inside of a speaker system, so that's my use, so it needs to be efficent, I am making an active monitor, essentially (although it's not a monitor in the fact that it is decidedly low-fi).
  Reply With Quote
Old 2nd August 2005, 03:18 AM   #4
sam9 is offline sam9  United States
diyAudio Member
sam9's Avatar
Join Date: Jun 2002
Location: Left Coast
OK, you want an IC amp.

Suggest you look at

Click Projects, then
Click Power Amps
Browse these. There should be at least one that will do the job.
  Reply With Quote


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
The cheapest PA system andrew_87 PA Systems 25 9th December 2008 08:00 AM
Cheapest LM3886(TF) ? TroelsM Chip Amps 22 26th August 2007 04:59 PM
Cheapest USB DAC kit? Spasticteapot Digital Source 0 16th November 2006 04:56 AM
Cheapest kit or project? yamski Tubes / Valves 14 26th May 2006 12:59 AM

New To Site? Need Help?

All times are GMT. The time now is 02:27 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Đ1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2