5.1 CHANNEL AMP WITH 2xLM1876,1xLM4782 is it possible ?

TOXICAUDIO · 4th May 2011, 05:49 AM

Hi Diy's

this is my first diy

I wanna build 5.1 channel with 2xLM1876 for "rear" and "front" channels.
And 1xLM4782 is a 3 channel amp, 2 channels bridged for "Sub woofer" and 1 channel for "center".

Is it possible ...?

if it is possible then plz any one advice abt circuit diagram and power supply

TOXICAUDIO · 4th May 2011, 07:23 AM

LM1876 is a 2xLM1875
can i use the attached circuit diagram for my project.. ?

i get the circuit diagram from elliott sound products

and split power supply too

NEOMATRIX · 4th May 2011, 08:10 AM

i wants to be circuit diagram for amplifier circuit description for I.C_TDA-7375a

TOXICAUDIO · 4th May 2011, 08:21 AM

LM1876 is a 2x1875 so can i use this circuit ??
i get it from "Elliot Sound Products"

digits · 4th May 2011, 09:39 AM

By the time you add the costs of enclosures, heatsinks and transformers and PSU caps, you are probably way over the cost of a budget AV receiver, offering things like remote control and all kinds of bells and whistles.

If cost is no objection, you can certainly do this, but start with the costs of the items mentioned, building up the PCB's is cheap in comparison.

diarav · 4th May 2011, 11:43 AM

Toxicaudio: You cannot use Rod Elliots LM1875 circuit for wiring LM1876. The pinouts are different.
Your project is not impossible, but will need a lot of work and preparation as "digit" pointed out in his post.
I have been working on a project to build a 5.1 amp using 6 LM3886 and I have redesigned it multiple times over the last 4 years. It is still not ready.

Best of Luck on your project.

TOXICAUDIO · 4th May 2011, 12:34 PM

Quote:

Originally Posted by diarav

Toxicaudio: You cannot use Rod Elliots LM1875 circuit for wiring LM1876. The pinouts are different.
Your project is not impossible, but will need a lot of work and preparation as "digit" pointed out in his post.
I have been working on a project to build a 5.1 amp using 6 LM3886 and I have redesigned it multiple times over the last 4 years. It is still not ready.

Best of Luck on your project.

Last 4 years Ohh that's great u r really great
I appreciate ur patience

Yes u r right pinnouts are different

i get circuit from national semi conductors

Now the problem is chip availability

i am livin in small town near vijayawda, andhrapradesh (INDIA)

where can i get them ???

any price details ?? (LM1875, LM1876, LM3886) to order them

searched on local shops they even don't know those are audio amps

please advice ..................

digits · 7th May 2011, 05:46 AM

Welcome to RS Online

R382 for you sir.

TOXICAUDIO · 7th May 2011, 07:12 AM

THX u very much DIGITS

TOXICAUDIO · 7th May 2011, 07:23 AM

Ohhh guys i need to creat new thread on TDA2030a

4th May 2011, 05:49 AM	#1
TOXICAUDIO diyAudio Member Join Date: Oct 2009	5.1 CHANNEL AMP WITH 2xLM1876,1xLM4782 is it possible ? Hi Diy's this is my first diy I wanna build 5.1 channel with 2xLM1876 for "rear" and "front" channels. And 1xLM4782 is a 3 channel amp, 2 channels bridged for "Sub woofer" and 1 channel for "center". Is it possible ...? if it is possible then plz any one advice abt circuit diagram and power supply

4th May 2011, 11:43 AM	#6
diarav diyAudio Member Join Date: Dec 2004 Location: Bangalore India	Toxicaudio: You cannot use Rod Elliots LM1875 circuit for wiring LM1876. The pinouts are different. Your project is not impossible, but will need a lot of work and preparation as "digit" pointed out in his post. I have been working on a project to build a 5.1 amp using 6 LM3886 and I have redesigned it multiple times over the last 4 years. It is still not ready. Best of Luck on your project. __________________ Regards, Din

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4th May 2011, 08:10 AM	#3
NEOMATRIX diyAudio Member Join Date: May 2011	i wants to be circuit diagram for amplifier circuit description for I.C_TDA-7375a

4th May 2011, 09:39 AM	#5
digits diyAudio Member Join Date: Apr 2011	By the time you add the costs of enclosures, heatsinks and transformers and PSU caps, you are probably way over the cost of a budget AV receiver, offering things like remote control and all kinds of bells and whistles. If cost is no objection, you can certainly do this, but start with the costs of the items mentioned, building up the PCB's is cheap in comparison.

7th May 2011, 05:46 AM	#8
digits diyAudio Member Join Date: Apr 2011	Welcome to RS Online R382 for you sir.

7th May 2011, 07:12 AM	#9
TOXICAUDIO diyAudio Member Join Date: Oct 2009	THX u very much DIGITS

7th May 2011, 07:23 AM	#10
TOXICAUDIO diyAudio Member Join Date: Oct 2009	Ohhh guys i need to creat new thread on TDA2030a

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