Please Help!!! me decide on a chipamp Please Help!!! me decide on a chipamp - diyAudio
Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

Please Help!!! me decide on a chipamp
Please Help!!! me decide on a chipamp
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 12th September 2006, 08:40 PM   #1
Morning_Star is offline Morning_Star  United States
diyAudio Member
Join Date: Apr 2006
Location: Atlanta, Ga
Default Please Help!!! me decide on a chipamp

I was excited to start on a chip amp but with so many variations out now I don't know where to start. There are some specific things that I am looking for though.

I'm looking for a gainclone that has

- atleast 25-50w per channel
- the least THD% and most headroom as possible (S/N%)
- two sets of balanced trs inputs instead of RCA that is selectable
- outputs to have speaker outs as well as trs that is selectable

I will be using it for my studio amplifier to power my monitors. I'm guessing I will need to add a stage for the balanced to unbalanced on the input and then another unbalanced to balanced stage on the output. Also I don't know what kind of summing circut to use for the selector switch on the input and output to ensure no added noise. And I would like a line output for a headphone amplifier. Please...... any help is appreciated. Thanks.
  Reply With Quote
Old 12th September 2006, 09:12 PM   #2
N-Channel is offline N-Channel  United States
diyAudio Member
N-Channel's Avatar
Join Date: Mar 2003
Location: Sol System
Send a message via AIM to N-Channel
Default Lm4765

Hi ______,

Have a look at National's LM4765 from their Overture series of ChipAmps. It has really good S/N and THD Figures (108dB @ 25W, and 0.009% THD at 1kHz). Slew Rate's not too bad: 12-18V/mS. The '4765 is actually a dual channel chipamp that will easily bridge (for balanced input-output operation) or parallel (for increased drive capability).

Here is the link:

Give it a look.


  Reply With Quote
Old 13th September 2006, 03:16 AM   #3
ifrythings is offline ifrythings  Canada
diyAudio Member
ifrythings's Avatar
Join Date: Oct 2005
The TDA7293(4) series have good specs.... 100W@8ohm
THD is 0.005% and 10V/uS SR, its able to do 4 ohm no problem and it has a differential input stage so you can use RCA or balanced pair it also has a slave function so you can run several in parallel with no problem and acording to the datasheet it also has a clipping detector built in ( I could be mistaken though)

Just my few points

  Reply With Quote
Old 13th September 2006, 04:23 PM   #4
SpittinLLama is offline SpittinLLama  United States
diyAudio Member
Join Date: Apr 2005
Location: In the Wild, Wild West
Keep in mind ST often stretche their specs some. The parallel slave ability is really cool though.

  Reply With Quote
Old 14th September 2006, 02:59 PM   #5
Leolabs is offline Leolabs  Malaysia
diyAudio Member
Leolabs's Avatar
Join Date: Dec 2004
Location: Bukit Mertajam
Send a message via MSN to Leolabs
Hi Morning Star!Why not go for the simplest and popular LM3875???
  Reply With Quote


Please Help!!! me decide on a chipampHide 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
Can't quite decide on a woofer... retroman Multi-Way 14 5th June 2009 02:32 AM
OB or TL - Help me decide jim rose Full Range 13 22nd March 2007 09:10 AM
how to decide these resistance value.?? titanchen68 Solid State 5 29th June 2006 12:50 PM
Help me decide on an OP-amp Cradle22 Parts 16 25th April 2005 04:31 PM

New To Site? Need Help?

All times are GMT. The time now is 04:53 AM.

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