Need a Mono chip amp

bnhoang228 · 6th January 2012, 05:05 AM

Like the title says. Looking for a mono chip amp.

I have an extra Dayton B652 speaker lying around I want to make it into a portable speaker so I'm looking for a cheap mono chip amp to power it. Any ideas?

Ramlee · 06:32 AM

How about the TDA2003 - 8-18VDC producing about 10W into 4ohms. Simple and cheap to build. How much power were you loking for??

OK!! I just went and checked out your speaker. It's a thumper!! RMS 75W max so the TDA2003 would barely wake this cabinet up.

For what it's worth, there are numerous mono chip amps out there that pump out the kind of power you're looking for. Just type some search terms (mono, 40W, BTL chip amp) into google and see what you get. Failing that, go to the National Semicon, Toshiba, SANYO homepages and check out what they've got.

AndrewT · 6th January 2012, 10:41 AM

Why restrict the search to BTL.
Any 50W to 70W chipamp could be used without resorting to BTL.

KatieandDad · 6th January 2012, 10:47 AM

You're going to struggle to get much power with an 18V supply.

You're going to need to bridge two amps or use an SMPS to increase the supplies.

Radio-Shack did a cheap In-Car Booster Amp that runs from 12V and gives about 40W.

Osvaldo de Banfield · 6th January 2012, 11:14 AM

TDA 2004 work bridged easily.

KatieandDad · 6th January 2012, 11:19 AM

I've got one of the Radio Shack bosster amps that you can have for the P&P. I think it was based upon the TDA2004. It's working but the original input leads have been removed. You will need to tinker with the attenuator resistors at the inputs as it was intended to be driven by a power amp (all-be-it a low power drive).

Osvaldo de Banfield · 6th January 2012, 11:28 AM

TDA 2004 work bridged easily.

AndrewT · 6th January 2012, 12:19 PM

He did not place a voltage restriction.
He wants a chipamp to drive a 75W speaker.

KatieandDad · 6th January 2012, 12:34 PM

He wants it portable which limits it a bit.

6th January 2012, 05:05 AM	#1
bnhoang228 diyAudio Member Join Date: Nov 2011	Need a Mono chip amp Like the title says. Looking for a mono chip amp. I have an extra Dayton B652 speaker lying around I want to make it into a portable speaker so I'm looking for a cheap mono chip amp to power it. Any ideas?

6th January 2012, 06:05 AM	#2
Ramlee diyAudio Member Join Date: Nov 2011 Location: the big island	TDA2003 How about the TDA2003 - 8-18VDC producing about 10W into 4ohms. Simple and cheap to build. How much power were you loking for?? OK!! I just went and checked out your speaker. It's a thumper!! RMS 75W max so the TDA2003 would barely wake this cabinet up. For what it's worth, there are numerous mono chip amps out there that pump out the kind of power you're looking for. Just type some search terms (mono, 40W, BTL chip amp) into google and see what you get. Failing that, go to the National Semicon, Toshiba, SANYO homepages and check out what they've got. Last edited by Ramlee; 6th January 2012 at 06:32 AM. Reason: update

6th January 2012, 10:41 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Why restrict the search to BTL. Any 50W to 70W chipamp could be used without resorting to BTL. __________________ regards Andrew T.

6th January 2012, 12:19 PM	#8
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	He did not place a voltage restriction. He wants a chipamp to drive a 75W speaker. __________________ regards Andrew T.

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6th January 2012, 10:47 AM	#4
KatieandDad diyAudio Member Join Date: Nov 2011 Location: UK	You're going to struggle to get much power with an 18V supply. You're going to need to bridge two amps or use an SMPS to increase the supplies. Radio-Shack did a cheap In-Car Booster Amp that runs from 12V and gives about 40W.

6th January 2012, 11:14 AM	#5
Osvaldo de Banfield diyAudio Member Join Date: Dec 2011 Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina	TDA 2004 work bridged easily.

6th January 2012, 11:19 AM	#6
KatieandDad diyAudio Member Join Date: Nov 2011 Location: UK	I've got one of the Radio Shack bosster amps that you can have for the P&P. I think it was based upon the TDA2004. It's working but the original input leads have been removed. You will need to tinker with the attenuator resistors at the inputs as it was intended to be driven by a power amp (all-be-it a low power drive).

6th January 2012, 11:28 AM	#7
Osvaldo de Banfield diyAudio Member Join Date: Dec 2011 Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina	TDA 2004 work bridged easily.

6th January 2012, 12:34 PM	#9
KatieandDad diyAudio Member Join Date: Nov 2011 Location: UK	He wants it portable which limits it a bit.

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