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 13th May 2004, 10:01 PM   #1
diyAudio Member
 
Join Date: May 2004
Location: Here.
Default eek, Think this is in the right place TDA 7294V question

OK, the TDA7294V is a 100w 8 ohm power amplifier chip. I've been looking at tube amp schematics, and they all need output transformers between the power amp tubes and the speakers. . . Will I need that if using this chip? If so, what transformers should I use to go between it and a marshall 4x12 cabinet. It needs to be available online in the UK, preferably with a switch card payment option. cheers, Gra
  Reply With Quote
Old 14th May 2004, 10:55 AM   #2
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Default Re: eek, Think this is in the right place TDA 7294V question

Nearly, but not quite

I'll move this to Chip Amps for you!
__________________
Al
I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort
  Reply With Quote
Old 14th May 2004, 12:25 PM   #3
diyAudio Member
 
Circlotron's Avatar
 
Join Date: Jun 2002
Location: Melbourne, Australia
Default Re: eek, Think this is in the right place TDA 7294V question

Quote:
Originally posted by PhoenixFL
Will I need that if using this chip?
99.999% of the time a solid state amp can drive a speaker directly, without the need for a transformer. This was touted as a big deal when they first appeared. For the Marshall 4x12 box the combined impedance of the loudspeakers would need to be 8 ohms. Should say somehwere.
  Reply With Quote
Old 14th May 2004, 04:21 PM   #4
diyAudio Member
 
Join Date: May 2004
Location: Here.
Default Lol, Yup!

All standard 4x12 cabinets (Guitar anyway, not sure about bass) are at 8 ohms. I knew baout that one lol, experience with guitar teachers amp lol, But, to ask, I thought I saw something about this on the celestion website, Is there a way to connect 2 8ohm cabs up to give an over all 8 ohm impedance? in parallel maybe? i guess in series would double the resistance. . .
  Reply With Quote
Old 17th May 2004, 03:16 PM   #5
GregGC is offline GregGC  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Toronto
In parallel you'll get 4 ohms. You need 4 of the 8ohms (2 pares in par and then the 2 pares in ser.)

/Greg
  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
Stupid question , but this looked like the place to ask . fortuosity Power Supplies 31 21st October 2011 02:36 PM
Market place photo listing question woody Everything Else 2 31st January 2008 11:53 AM
2x 2Sk170 in place of 2SK389 and 2x 2SJ74 in place of 2SJ109? jarthel Parts 12 26th July 2007 09:08 AM
I have a kind of UcD survey question, maybe it's in the wrong place... ptwining Class D 5 30th March 2006 05:33 PM
Best place to place bleeder resistor in a power supply? G Tubes / Valves 13 4th August 2004 09:26 AM


New To Site? Need Help?

All times are GMT. The time now is 03:19 PM.


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