Why is there no bass?

Your subwoofer amplifier module has gone south and needs to be serviced.

it is completley possible that your sub has in fact blown itself out mine has some CRAZY excursion to the point ive turned down the bass on my laptop in hopes to keep it alive so order a new sub SPEAKER if the speaker works the amps FINE

if you turn the bass setting in your radio down it will take the bass out, but may take some of the bass out of the subs as well, if this occurs and you still are not satified, you either have to get a car receiver with a non fading subwoofer preout, or you could get bass blockers for all the speakers you dont want the bass in

your acoustimas requires you to connect all speakers outputs to it first then to the speakers.

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..

try a capcitor or maybe its not getting enough power

try using a ohm meter and if its not making what the factory specs are its most likly it will keep loosing more and more power then stop working which is what ive had happen to me before

Make sure the wired remote is connected completely and if that doesn't work try putting a pillow or a pile of blankets to cover both the subwoofer driver and the air port on it and that should reduce the sound coming from it. Also if it is in a corner or on a solid floor like wood or tile i would move it to a less enclosed space with carpet or a rug. Thats all I got I hope that helps.

hard to tell whats causing this .Just curious make sure speaker wires going to subs are POLARIZED meaning positive from amp is with positive at woofer and NEGATIVE is with negative at woofer.When these are crossed and when volume is raised you will hear the bass cancell each other out..

did you tell the receiver that you have a subwoofer connected (thru the quick setup)?