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-   -   Help!very Powerful Amp Needed! (http://www.diyaudio.com/forums/solid-state/98037-help-very-powerful-amp-needed.html)

hernanstafe 13th March 2007 06:12 PM

Help!very Powerful Amp Needed!
 
I am building a subwoofer and i used a tda2050 parallel circuit to move it, and it comes out to be that it barely moves the speaker (which is 10" and about 200RMS). I need a really powerful amp, any suggestions?

I forgot, if possible it should work with +-70v or more, and it'd be nice if it had the pcb, cause i've tried to design some amp pcb with Protel and they didn't work out:(

Spirtos 13th March 2007 06:43 PM

Hi,
look at: http://sound.westhost.com/projects-1.htm

or even : http://www.diyaudio.com/forums/showt...331&highlight= for quasi's design.

hernanstafe 13th March 2007 10:28 PM

the sound westhost one is nice, but there's no PCB. Does anyone have the pcb for those? cause like i said i tried doing pcb's with protel but they didn't come out right:( Plus the pcb has to be single sided!!

KISS 14th March 2007 03:36 AM

Budget? Have you thought about Class D? What's so freightning about double sided? Before computers, you used to "tape" layouts.
That was rough. A 6" x 6" board would be layed out on a 2' x 3' layers of velllum magnified. Fun. <G>.

BobEllis 14th March 2007 10:17 AM

I'm curious why you think that you need to see the speaker move. If the room is small (as I suspect it is since you are using a 10" sub) you won't see a lot of movement at reasonable volumes. Does the sub seem like it keeps up with your mains?

Are you using the driver in a ported enclosure? That will keep excursion down.

Before going to a new amp, be sure that you are getting a good signal to your driver - stick a voltmeter across it and see what you get when you are trying to be loud. You may find that your receiver settings are not sending much signal to the sub.

fotios 14th March 2007 11:58 PM

Re: Help!very Powerful Amp Needed!
 
Quote:

Originally posted by hernanstafe
I am building a subwoofer and i used a tda2050 parallel circuit to move it, and it comes out to be that it barely moves the speaker (which is 10" and about 200RMS). I need a really powerful amp, any suggestions?

I forgot, if possible it should work with +-70v or more, and it'd be nice if it had the pcb, cause i've tried to design some amp pcb with Protel and they didn't work out:(

Take a look in http://www.diyaudio.com/forums/showt...hreadid=97566. This one is enough? With slight modifications the power output could be decreased from 300Wrms/8 to 200Wrms/8. You need help? In your service always.
Fotios

fotios 15th March 2007 12:32 AM

Re: Re: Help!very Powerful Amp Needed!
 
2 Attachment(s)
Quote:

Originally posted by fotios

Take a look in http://www.diyaudio.com/forums/showt...hreadid=97566. This one is enough? With slight modifications the power output could be decreased from 300Wrms/8 to 200Wrms/8. You need help? In your service always.
Fotios

O.K. i tell jokes. In this construction included two clean 170Wrms/8 channels with +/-60V supply. Are you in posetion to construct the one? It is very good and operate for two years without problems. Inform me to proceed in publishing of whole plans (schematic, layout, protections etc)

mjraudio 15th March 2007 12:59 AM

Normally, subwoofers are ported, but there are sealed versions such as Bob Carver's units.

Will your sub be ported or unported?

Sealed units with passive radiators can be particularly effective!

Anyways, to answer your question regarding an amplifier, I would recommend THIS unit. It has plenty of power to driver a 10" driver and I argue that you cannot find a better deal.

Leolabs 15th March 2007 01:30 AM

Try UcD kitsets too.


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