HA13150A Audio Amplifier

[Ben King]

I have theorized a circuit around the HA13150A: https://docs.google.com/document/d/11W_-_GySemCkPnTqpv7QQaY6ABDV5JtYK_gHsTIprRs/edit?usp=sharing. I am confused about what to do with pins 2 and 22, (StandBy and Mute). Other than that, what do you guys think? Any suggestions or things I forgot? HA13150A's datasheet is attached.

 

[(*steve*)]

They are both inputs. Page 8 has an example of how to use the mute input.

I imagine you could do something similar for the standby input.

Do you want to use either feature?

 

[Ben King]

They are both inputs. Page 8 has an example of how to use the mute input.

I imagine you could do something similar for the standby input.

Do you want to use either feature?

i don't need the features, what exactly is the standby supposed to do?

 

[(*steve*)]

i don't need the features, what exactly is the standby supposed to do?

If you don't need the features, tie both inputs to +5V.

Standby puts the amplifier module into a low power mode (effectively turns it off).

 

[Ben King]

I guess no one has any suggestions...

 

[BobK]

Did you read Steve's post, #4?

Bob

 

[Ben King]

Did you read Steve's post, #4?

Bob

Oh I meant anyone else have suggestion or things to point out. You've just pointed something out, so...
I am mainly wondering if I filtered out radio frequencies and other stuff right.

 

[Ben King]

What else can I do to improve the quality of the sound?

 

[Audioguru]

What else can I do to improve the quality of the sound?

Its datasheet shows that it produces low distortion if you keep the output per channel less than about 12W per channel into 4 ohm speakers. Simply turn down the volume until you do not hear any distortion.

 

[Ben King]

Its datasheet shows that it produces low distortion if you keep the output per channel less than about 12W per channel into 4 ohm speakers. Simply turn down the volume until you do not hear any distortion.

yeah i just hope that 12W is loud enough for me hehe

 

[Audioguru]

yeah i just hope that 12W is loud enough for me hehe

24W with low distortion sounds only a little louder than 12W at low distortion. 120W with low distortion sounds twice as loud as 12W with low distortion.
Because our hearing's sensitivity to loudness is logarithmic.

 

[Ben King]

that just made decibels, a LOT simpler

feels good

to the testing table (workbench) we go