TDA7294 in BTL - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

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
Reply
 
Thread Tools Search this Thread
Old 25th January 2011, 08:18 PM   #1
ruferto is offline ruferto  Portugal
diyAudio Member
 
Join Date: Oct 2004
Default TDA7294 in BTL

I have build one 4x TDA7294 in BTL mode to use in a sub, but i saw this in the tda datasheet .
My question is: is it any good for a subwoofer amp?

Best regards,
RUF
Attached Images
File Type: jpg btl.JPG (20.6 KB, 240 views)
  Reply With Quote
Old 25th January 2011, 08:46 PM   #2
diyAudio Member
 
Join Date: Dec 2010
Location: wigan
Do you have any problem with the sound from it ??
  Reply With Quote
Old 25th January 2011, 09:06 PM   #3
ruferto is offline ruferto  Portugal
diyAudio Member
 
Join Date: Oct 2004
No, only 50hz noise because of the bad psu, only TR+Caps.
But can it reach the 18HZ for example?
Is it strong enough to say "stop" a the Sub "stop"

regards,
Ruf
  Reply With Quote
Old 26th January 2011, 02:14 AM   #4
norture is offline norture  Indonesia
diyAudio Member
 
norture's Avatar
 
Join Date: Nov 2005
Location: Palembang, Indonesia
Quote:
Originally Posted by ruferto View Post
No, only 50hz noise because of the bad psu, only TR+Caps.
But can it reach the 18HZ for example?
Is it strong enough to say "stop" a the Sub "stop"

regards,
Ruf
Well, for a start, have you got an appropriate sub for that 18Hz freq? It has to be big to handle such low frequency, though. The IC can surely handle sub-20Hz input signals. Regarding its power, I think 4xTDA7294 will shake your feet off the ground. LOL!
  Reply With Quote
Old 26th January 2011, 08:27 AM   #5
ruferto is offline ruferto  Portugal
diyAudio Member
 
Join Date: Oct 2004

I have for now one peerless xls10 in a sealed cab. but a think i am going to try or in TH or PASSIVE enclosure.
there are so many thoughts and one of them is, as i have one big 500va 2X25V~ i was thinking of buy another one and make one amp for 2 subs.
But i was not sure of the SUBwoofer capabilities of the amp.

regards,
RUF
  Reply With Quote
Old 26th January 2011, 09:04 AM   #6
diyAudio Member
 
abraxalito's Avatar
 
Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Blog Entries: 102
Send a message via MSN to abraxalito Send a message via Yahoo to abraxalito Send a message via Skype™ to abraxalito
It'll work fine for sub duty - you just will want to ensure the bootstrap capacitor is big enough to get good LF performance. Oh, and the drive unit would want to be an 8R type to get the most out of bridged mode.
__________________
No matter if we meanwhile surrender every value for which we stand, we must strive to cajole the majority into imagining itself on our side - Everett Dean Martin
  Reply With Quote
Old 26th January 2011, 12:19 PM   #7
ruferto is offline ruferto  Portugal
diyAudio Member
 
Join Date: Oct 2004
thank you.

I think i am going to buy one xlsp for my sub.

best regards,
RUF
  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
My TPA3122D2N BTL proto theAnonymous1 Class D 86 28th February 2013 08:27 PM
Bridged (BTL) A75 Help please damacles Pass Labs 7 26th April 2008 01:34 AM
Help with BTL power requirements dayveshome Solid State 5 28th March 2008 11:45 AM
can mp7720 btl????? thz6339 Class D 6 1st May 2007 07:08 PM
ultra-BTL digi01 Chip Amps 1 16th March 2007 02:37 PM


New To Site? Need Help?

All times are GMT. The time now is 05:53 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