audio amp problems

[dsv101]

Here is the datasheet to my audio amp (the power dip one): http://www.datasheetcatalog.org/datashe ... xo4ify.pdf

i am trying to run it from a 7.4v 300mA (not mAh) ac adapter.

In the data sheet it mentions about mA that it can be 35 - 50.

Did i break it? I thought components only took as much mA as it needs.

by the way, i didn't build the circuit, it was professionally done in pc speakers.

this is a novice question. Any suggestions?

 

[bud]

It's kinda hard to kill something undervolting it.

 

[dsv101]

the data sheet says it will run from 3v to 12v (the amp ran from usb power that was like 5-6v)

 

[dsv101]

DOUBLE POST,lol

the datasheet also says something about Vcc = 9v

then in the actual data sheet part it reads what i typed above

 

[dsv101]

TRIPLE POST

I reduced resistance from my ac adapter and it now puts out 9v, when i turn on my amp it reduces to 8.3. I think the problem was the resistors i used reduced the mA not giving my amp enough (35 mA needed) amperes

also there is a Horrifying buzz in the speakers, how would i rid this?

 

[bud]

Are you getting any sound? And what do you have it hooked to?

 

[dsv101]

I am getting sound now that i removed the 2 resistors, but there is massive humming/buzzing. kind of a buzzzzzzzhummmmmmmmmbzzzzzzzz, lol

output of the n64 is connected to input on the amp, (i combined the channels for testing reasons) and the 2 channel output on the amp is connected to the speakers that came with the amp.

do resistors affect mA too?

if so, that is probably the problem which will be removed when i get battery power wont it?

 

[bud]

Ground your n64 with the amp.

 

[dsv101]

i think it is

N64 pins | Wall | Audio amp pins
[r out]--------------[r in]-[L in]
[gnd]---------------[gnd]
8.6v-----[+ in]
[-]-----[- in]
[r out]-----------[speaker]------[amp ground]
[L out]-----------[speaker]------[amp ground]