problems with subwoofer amp! - 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 18th February 2007, 09:08 PM   #1
diyAudio Member
 
Join Date: Feb 2007
Location: Argentina
Default problems with subwoofer amp!

As some of you know i'm building a subwoofer and i was going to use a bridged tda2030a amp to power it. I bought a 10" sub recently and it comes to be that i don't have near enough power to make it work properly. That amp delivers about 34W max and i need like 100W. I've been searching the forum for a 100W amp and i found some but they don't have the pcb designed, only the schematic. I'd like to know if someone has the schematics AND THE PCB for a 100 - 150 W amp, with good quality sound.


PD: I'm not sure if i should use an AB or D class amp either, HELP!!



Thanks everyone!
  Reply With Quote
Old 19th February 2007, 12:42 AM   #2
diyAudio Member
 
Join Date: Nov 2005
Default Try 41hz.com...

One amp I think could work well in your application is the Amp5 kit. http://www.41hz.com/main.aspx?pageID=120 While I no personal experience with this kit (or any 41hz.com kits), I've heard many good reviews about them.
  Reply With Quote
Old 19th February 2007, 12:55 AM   #3
v-bro is offline v-bro  Netherlands
diyAudio Member
 
v-bro's Avatar
 
Join Date: May 2006
Where will you use it? I use AMP9 in my car (2x200W at 2 ohms when parallelled! Or 1x 400W at 1 ohms?)

I don't know AMP5, but read a lot of good things about it....

For subs class D (T) is excellent, can't get better control and power for the money...
__________________
Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
  Reply With Quote
Old 19th February 2007, 07:19 AM   #4
mateo88 is offline mateo88  United States
diyAudio Member
 
Join Date: May 2004
Location: Argyle, Texas
Buy a kit from chipamp.com. If you have a 4 ohm sub woofer, you can parallel two chips to get 100 watts.

I have no idea how to help you if it's for a car, though.
  Reply With Quote
Old 19th February 2007, 04:53 PM   #5
diyAudio Member
 
Join Date: Feb 2007
Location: Argentina
hey guys thanks for the replies. It's not for a car it's for home use, and i can't buy one of those kits, i'm from Argentina, sending it here would be ridicously expensive. I need the schematics and pcb to actually BUILD it. The speaker is 4 ohm by the way!!
  Reply With Quote
Old 19th February 2007, 06:15 PM   #6
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
Well if you want to actually build it then Take the Schematic and use a PCB design program and design your own PCB and then you have your own PCB.....

If you can read a schematic you can design a PCB and most Chips amps are very simple so there shouldn"t be a Problem makeing your own...

Ive done it......


  Reply With Quote
Old 19th February 2007, 06:29 PM   #7
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
I just finished a very nice sounding sub using an NX-150 power amp module from aussieamplifiers.com (a ready made module = just add DC power and a chassis), installed in a stand alone box ... connected it to a sealed 3.1 cubic foot enclosure with a 12" Pyle Driver (8 ohms, nominal) as used in car systems. I like having an automotive type bass woofer as they last a long time in home stereo environment, have nice tight, heavy duty frames and thicker, yet more flexable diaphram mounting and a large coil & huge magnet = play it load and it still lasts and lasts.

I had to "pad down" the gain on the Aussie Amp somewhat to get it into balance with the rest of the system (@ 150 watts the sound pressure level is enough to rattle the windows) . The sub rolls off around 5 Htz and I set the active low pass on the pre-amp to 150 Hz = no internal passive crossover in the sub = simple, I think it sound great and so does my wife.

You could build your own chip amp from kit or from scratch from a circuit diagram and up ... but I prefer amp modules as the time consumed on the bench is seldom equal to the level of improved quality from a good sounding module, chip amp, power MOSFet amp, tube amp or whatever = the module makers are doing some really high tech, high quality work that is seldom beatable with a soldering iron ... IMOP
  Reply With Quote
Old 20th February 2007, 06:41 AM   #8
mateo88 is offline mateo88  United States
diyAudio Member
 
Join Date: May 2004
Location: Argyle, Texas
http://audiosector.com/lm4780.shtml
  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
Subwoofer problems pilchardman101 Car Audio 8 3rd May 2008 03:17 PM
anybody facing stability problems with LM3886 BA100 with 8 ohm subwoofer? rhythmdiy Chip Amps 1 31st October 2007 06:04 PM
how to connect a non powered subwoofer to a stereo system without a subwoofer output JSD777 Multi-Way 4 20th September 2005 03:19 PM
Infinity BU1 amplified subwoofer. problems. pat allen Solid State 0 30th December 2004 02:42 PM
Subwoofer (Sealed) Problems Duo Subwoofers 7 18th November 2002 03:18 AM


New To Site? Need Help?

All times are GMT. The time now is 02:08 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