The Most Powerful Single Supply Amp?? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

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 11th September 2005, 12:50 AM   #1
diyAudio Member
Join Date: Aug 2005
Default The Most Powerful Single Supply Amp??

I'm looking to make a nice sound boost to my car audio system but I need to know a good amp choice to do it with. I'm only using a single supply by using a 120w DC-DC converter to up my car battery to 24v. So I will only have one positive voltage. I've been working with the LM4752 which is a very nice single supply stereo amp but it only outputs 11w per channel and I'm hoping to get at least double that. I tried hooking up the LM1875 in Single Supply but it only gave me about 9w max. Can anyone recommend a good powerful single supply amp?

  Reply With Quote
Old 11th September 2005, 02:23 AM   #2
Tim__x is offline Tim__x  Canada
diyAudio Member
Join Date: Jun 2004
Location: Edmonton area, Alberta
How much power are you looking for, and into what impedance?

The most you'll get out of a single 24v supply without bridging is around

6W into 8Ohms
12W into 4Ohms or
24W into 2Ohms

Assuming an amp with around 2.2v of rail loss.
  Reply With Quote
Old 11th September 2005, 02:27 AM   #3
diyAudio Member
Join Date: Aug 2005
I'm using 4ohms and I'm looking for the most power I can get (25w+). 12w is really lame I guess my best bet is to just bridge the LM4752 :/

  Reply With Quote
Old 11th September 2005, 05:09 AM   #4
diyAudio Member
Join Date: Mar 2007
look at the data sheet of TDA7386, its says 40wattx4 at 13.2, i ve used this chip and it is really good
  Reply With Quote
Old 11th September 2005, 05:52 AM   #5
DcibeL is offline DcibeL  Canada
diyAudio Member
DcibeL's Avatar
Join Date: May 2003
Location: Saskatchewan
I believe you are incorrect, abidr. Looking at the datasheet, on the very first page it is stated:

4 x 24W/4W @13.2V, 1KHz, 10% THD

A very poor rating, so looking further down the datasheet, to page 3 it is stated that at 13.2V you have a typical output power available of 18W at 13.2V with 0.8%THD measured at 1kHz. On page 6 there are a couple graphs of distortion measured at 14.4V supply. Quite poor quality if you ask me, but I guess it's what to be expected of a car cdplayer amplifier chip.
The power of Science compels you!
  Reply With Quote
Old 11th September 2005, 06:04 AM   #6
BWRX is online now BWRX  United States
diyAudio Moderator Emeritus
Join Date: Jan 2005
Location: Pennsylvania
if you aren't afraid of class d amps then have a look at this:
  Reply With Quote
Old 5th October 2005, 04:25 AM   #7
diyAudio Member
Join Date: Oct 2005
Why don't you use Philips IC TDA1562Q, which works on 14V supply voltage and gives about 70W of power, because, it's a class-H amplifier. Simple schematic ;-)
  Reply With Quote
Old 5th October 2005, 11:59 AM   #8
diyAudio Member
sagarverma's Avatar
Join Date: Feb 2005
Location: NEW DELHI
tda1562 can pump in the rated max for only few secs depending on the power caps that u use at its power rails.
i have a four channel amp driving six speakers in my car(4 ohm each).
tda1554q is great.22w/channel,2channels and very simple to of +12v!!
tda8563 can drive down to 2 ohms with 40w/channels,2 channels,very very simple to drives 4 speakers in car.runs off +12v!!
so both can be connectecd directly to car total power at disposal for me is 120w rms.
so use of these highly recomended(people ask me bout good quality system in my car!).whats more,i use my sony discman as i/p for both without any preamp and the i/p is sufficient for the amp.
both ics stereo
so choice with u
  Reply With Quote
Old 5th October 2005, 12:03 PM   #9
diyAudio Member
sagarverma's Avatar
Join Date: Feb 2005
Location: NEW DELHI
oh!i forgot.try tda7560 and another one named similarly,might be 7563.the rated power o/p is good.both for car and run from car battery i havent used them bec very costly from my source of semiconductors.
  Reply With Quote
Old 5th October 2005, 06:06 PM   #10
diyAudio Member
sousmielie's Avatar
Join Date: May 2005
Location: GP (Gangstas Paradise)
tda8563 is quite nice, I have also used it in a amp. Phillips have discontinued the TDA1554, TDA1553 and the TDA1558. Try the TA8210, I think Toshiba makes them, they also have a higher power version both of them work from 13.3v, they are also quite common in some small car amplifiers and don't sound too bad either...
  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
help with single supply for two EQ/preamps lassoharp Power Supplies 3 9th July 2009 03:24 PM
Is a single 3886 powerful enough to drive SS 18w-4531 ? 100db Chip Amps 10 13th October 2007 04:02 PM
printer single supply becoming split supply? facundonu Power Supplies 2 16th November 2006 06:09 PM
looking for powerful Single Ended diagram. flyingman Tubes / Valves 28 10th February 2005 02:46 AM
How to split a single supply cm961 Parts 13 9th October 2004 03:17 PM

New To Site? Need Help?

All times are GMT. The time now is 03:32 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2