How can I conrol the volume of bose sa 3 amp from the aux input ?

To connect an SA-2 amplifier to the BOSE 321 Series II Media Center, you will need to use an RCA to 3.5mm audio cable. Connect one end of the cable to the output of the SA-2 amplifier and the other end to the Aux input of the BOSE 321 Series II Media Center. Then set the input selector on the BOSE 321 Series II Media Center to Aux.

Here's the Manual
Good luck!
http://www.fixya.com/support/p168229-bose_lifestyle_sa_1_amplifier/manual-1542

Could be the impedence of the speakers that you're connecting. The bose amp was designed to drive 8 ohm speakers.

It depends on the Bose system you connected with the amp and the type of Bose remote you are using?Does the indicator LED at the rear of the amplifier stay solid green when you press the ON button on the remote?If not,check that your room code setting on the remote correspond with the micro switches setting at the rear of your amplifier.

check that the input source it set to aux on the bose. to check it is on turn the volume up a bit and touch the contact end where you plug into the source. it should gently hum when you touch the connectors then you know that the input is live on the bose. i take it you have it switched on lol

Here is what I did for my Bose Solo Tv to work on the Bell 9242 receiver.( see page 17 of Bell 9242 guide) 1. Hold down the aux button until all lights flash. 2. Press 2 to ensure Aux is set to audio. 3.Enter code 761 and press the pound (#) button. Now to have the satellite remote default volume to Bose Solo do the following. 1.Press and hold AUX 2.press # pound 3. Press the + side of volume 4. Press 0 5. Press pound ( AUX button will flash 3 times) 6. Press SAT mode 7. Test the volume on Bose Solo. (see page 22 of Bell 9242 guide)

make sure your audio out jacks are pluged into auidio in on bose and make sure it is pluged in under tv audio on the back of bose

How many ohms is your sub? The SA 3 Amp can only handle speaker(s) 6 ohms and greater. A lot of subs, as I understand, are 2 and 4 ohms typically. If yours is 2 or 4 ohms, then that explains it. The speaker would be "straining" your amplifier and blowing it.

Does your tv have stereo outputs? if yes all you have to do is run RCA red..white jacks into tv outtput then run the other ends into the amps tape or aux or cd input and your done! If you dont have outputs on tour tv you will have to but an RF converter box (about 20.00 at wal-mart) and hook that into the tv and the cables will run out of that to the stereo!