HA13150A Audio Amplifier Circuit

Thread Starter

foxxyman

Joined Jul 19, 2018
8
The datasheet shows that the sound quality is pretty good if the output power is only 3W per channel or less.
huh and it says it's a 21W x4
hmmm
but the THD rises after 3W
I mean I did get this for free, sort-of
there's nothing can do to lower the THD is there?
 
Last edited:

Audioguru

Joined Dec 20, 2007
11,248
huh and it says it's a 21W x4
hmmm
but the THD rises after 3W
I mean I did get this for free, sort-of
there's nothing can do to lower the THD is there?
Its output is 21W per channel when it is clipping like mad and producing horribly distorted squarewaves.
It has 4 amplifiers that have fairly low power and are used in a Japanese car radio. Use 4 hifi amplifiers with a much higher supply voltage instead. One TDA7294 hifi amplifier IC produces 60W with low distortion into 8 ohms with a 70V supply or 60W with low distortion into 4 ohms with a 54V supply.
 

Thread Starter

foxxyman

Joined Jul 19, 2018
8
Its output is 21W per channel when it is clipping like mad and producing horribly distorted squarewaves.
It has 4 amplifiers that have fairly low power and are used in a Japanese car radio. Use 4 hifi amplifiers with a much higher supply voltage instead. One TDA7294 hifi amplifier IC produces 60W with low distortion into 8 ohms with a 70V supply or 60W with low distortion into 4 ohms with a 54V supply.
ok
I got this amp for free, so I thought I might as well use it
 

Thread Starter

foxxyman

Joined Jul 19, 2018
8
Use 4 hifi amplifiers with a much higher supply voltage instead. One TDA7294 hifi amplifier IC produces 60W with low distortion into 8 ohms with a 70V supply or 60W with low distortion into 4 ohms with a 54V supply.
do you know of any good 4 channel chip amps? 60W channels would be amazing, but I don't need that much sound, 40W is just fine
 

Audioguru

Joined Dec 20, 2007
11,248
do you know of any good 4 channel chip amps? 60W channels would be amazing, but I don't need that much sound, 40W is just fine
Where will 60W or 40W per channel come from? Isn't your amplifier in a car that has a 14.4V battery?
A bridged amplifier (BTL) powered from 14.4V produces only 20W or 21W into 4 ohms when barely clipping.
A TDA8594 (NXP/Philips) has 4 channels at 20W into 4 ohms with low distortion when powered by 14.4V in a car and it even has an output that warns you that it is getting too hot.
 

Thread Starter

foxxyman

Joined Jul 19, 2018
8
Where will 60W or 40W per channel come from? Isn't your amplifier in a car that has a 14.4V battery?
A bridged amplifier (BTL) powered from 14.4V produces only 20W or 21W into 4 ohms when barely clipping.
A TDA8594 (NXP/Philips) has 4 channels at 20W into 4 ohms with low distortion when powered by 14.4V in a car and it even has an output that warns you that it is getting too hot.
I forgot to say that I took this amplifier chip off of a car stereo. The circuit board for the stereo was broken. I tried to fix it, which didn't work.
I am using for a family room's sound system.
 

Thread Starter

foxxyman

Joined Jul 19, 2018
8
The datasheet for the amplifier chip shows how its pcb should be connected.
Yes I know, thing is, the datasheet is blurry and hard to read. I can't find any better datasheets for the chip. I was hoping the circuit I created would be just as good.
 
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