Bose Acoustimass Subwoofer not working; front/center are working

The speaker probably needs not be replaced, only reconed or reconditioned. I would look into simplyspeakers.com or similar to get it done and then do the remounting yourself.

how to input conection

Make sure your power outlet and your audio source are ok. If they are then the subwoofer's power supply is probably dead.

I guess it is powered.If so,check the fuse,then transformer.If these are Ok,then there's probably a fault in the power circuit.

Hi, ok the Bose Acoustimass III system consists of two small cube speakers and one subwoofer unit called the Acoustimass bass module. If the subwoofer stops working, three points can be the cause of the failure. The Bose Acoustimass III is a passive system, meaning the speakers do not power themselves, but instead are connected to a receiver or amplifier. Thus, the amplifier, the speaker between the amplifier and the subwoofer, or the subwoofer itself could be the issue.

Things You'll Need:

* Amplifier
* Speaker cable
* Extra subwoofer


Instructions


Disconnect the speaker cable from the back of the Bose Accoustimass bass module and connect it to a subwoofer that is known to be working. If the subwoofer works, the bass module needs to be replaced.


Disconnect the speaker cable from the back of the receiver or amplifier you are using and from the back of the subwoofer in Step 1.


Connect a speaker cable that is known to be working between the back of the receiver or amplifier and the back of the Accoustimass module. If the module starts working, then the cable was the issue.


Disconnect the speaker cable from Step 3 from the back of the amplifier or receiver, then connect the cable to the subwoofer port on the back of an amplifier or receiver that is known to be working. If the subwoofer works, the receiver was the issue. If the subwoofer still does not work, verify that the speaker cable is in the subwoofer port of the receiver/amplifier and that the cable is connected securely to the subwoofer.



If you think you did the connection properly,Fine... If not you can use the manual from the below link and know how to connect it properly..

products.bose.com/pdf/customer_service/owners/og_am5iii.pdf


Have a nice day..

The entire speaker system is passive. That is, it requires amplification for each channel.

From the manual: "Compatible with A/V receivers rated from 10 to 200 watts per front channel and 10 to 100 watts per rear channel; rated from 4 to 8 ohms".

Usually the LFE out is only a line out and is not amplified in any way, so first of all is your subwoofer self amplified or not? Cause if not, the LFE output won't be of much use to you. So if it's not self amplified you need an new amplifier to put between the receiver and the subwoofer. Any amp that supports RCA line-in input will do. Even a car stereo amplifier will work provided you can get a 12volt power supply to run it in the house. If the subwoofer is self amplified though, then all you need is to make an adapter cause none are readily available in stores to go from a RCA connector to 2 wires. You can buy a virgin RCA connector that you can wire yourself at The Source, Circuit City, or any electronics store you have locally, or if you have an old RCA to RCA wire you don't need anymore, you can just cut it in half, strip the 2 wires and you got you adapter right there.

Clarify, did it ever work for you? Were both receivers used properly configured for the subwoofer? Did you also test the other speaker moduels running off the subwooferto see if they work?

Speaker Receiver setting
• Left and right LARGE
• Center LARGE
• Left and right surround LARGE
• Center surround* LARGE
• LFE/Subwoofer ON
With an Acoustimass 16 Series II system or upgraded Acoustimass 15 Series IlI system only.

Sounds like the rear volume is just turned down. Cant be the amp if the front and subs are working

Hi, have you checked the internal fuse in your sub?