Subwoofer broken after using wrong extension cable (VGA)

With everything connected correctly there could be a couple of possible problems:

1. If your receiver has on screen display capabilities, you may need to turn the subwoofer output "on"
2. If your subwoofer has speaker wire inputs/outputs, you could run speaker wire to it, then to your speakers & test if the subwoofer is working... hence verifying that the receiver has a function to turn the subwoofer output on/off
3. The cable between the subwoofer & receiver could be bad. Try another cable.

Good luck!

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..

Know Your Speaker SystemGenerally in systems all the cables from the speakers are connected to the subwoofer which comes with a set of wires to connect, that includes : a power cord to connect the system to the AC outlet, a power connector to feed the subwoofer and the subwoofer wires. Your system should come with at least three set of cables for connecting your speaker system to your PC. These cables are usually colored to help with the installation.

Start ConnectingYou should connect the cables matching the colors on the jacks located on the subwoofer. After connecting all these cable, its time to connect the rest of the cables like power, subwoofer and speakers. This is very easy if you pay attention to the subwoofer connection then you’d be able to follow the polarity that is written on the connectors. In the end, all your cables would be connected perfectly.

The above pic shows you all the ports to connect the wires to with all the color coded mannerism.
Knowing Your ComputerAll computers have atleast three connectors

• Line-In.
• Line-out.
• Mic.

Computers with six channel audio systems have two more connectors, i.e

• rear out.
• center/subwoofer out.

You’ll need to make sure if you have these extra connecters by checking the back side of your computer.

If your computer doesn’t have these two extra outputs: rear out and center/subwoofer out, it’s a disadvantage, you’d be able to connect your 5.1 anyway but you would require to use the line in and mic-in plugs as an alternative. Of course there is a really big disadvantage in using this configuration: you cannot use your microphone or line in inputs and your 5.1 speaker system at the same time. This is the reason that you should buy a motherboard with 5.1 system built in.
Configuration Of Computers With 5.1 Supporting Motherboards

• Front cable: To Line out.
• Rear cable: To the Rear-Out
• Center/Subwoofer cable : To Center/Subwoofer Out.

Configuration Of Computers Without 5.1 Supporting Motherboards

• Front cable: To Line-out.
• Rear cable: To Line in.
• Center/Subwoofer cable: To Mic-in.

Software ConfigurationAfter every single connection has been made, its time to setup audio configuration in operating system. Since we had Realtec drivers on our PC, Double clicking it opened up Speaker Configuration tab. In various options you should select 6 channel mode for 5.1 speaker output and check Only surround-kit if your PC has the separated rear and center/subwoofer outputs and leave it if you don’t.

Now everything is done, you are completely ready to enjoy surround sound experience and don’t forget to leave comments if you find this post useful.

I have a similar problem on Audi A6 2.5 tdi year 2000, is just that my subwoofer is working fine, but the rear speakers have no sound and the rear satellites on the same ciruits are working just fine, I cannot explain this! I have taken apart the rear speaker and teasted with an ipod and one is working fine but the other is dead! I don t know if there is any connection, or there is a filter for the rear speakers and if one speaker is dead there will be no sound on the other speaker! but as i said on the same cables satelites are working well!

The amp is blown. You need to get it in for service. No telling exactlly what is wrong untill it is opened. 215-736-8055

I also had this happen to me last night

MEASURE ACROSS SPEAKER TERMINALS IN OHM SCALE WITH A MULTIMETER- SHOULD GET BETWEEN 4-8 OHMS.IF NO READING,REPLACE THE SPEAKER. GOODLUCK

Hi there,
Yes, it is fixeable, but you can carefully check this,
1) open the SUB, and see if any cable is broke or loose in the negative and positive poles.
2) check if there a loose cable on the terminals point of attach speakers.
3) other than this is a defective AMP inside and mus be change.
open sky

Connection from receiver subwoofer output jack RCA plug male go into your powered subwoofer low level input with other end of cable, then you need to select Subwoofer YES/NO on the JVC receiver speaker setup menu option, select YES if this is a powered subwoofer you are using, should power up the subwoofer, may have to adjust a test tone balance for multi speaker output also, try trimming up on the subwoofer channel to initiate the signal on if the sub has an auto-on feature.

have u checked that the sub option on the reciver is on?