Question about Bose Acoustimass 15 System

2 Answers

Acoustimass Subwoofer has a low "hummm" sound when turned on.

I have a Bose Acoustimass 15 system. The small surround speakers work just fine. However, the Subwoofer module emits a low "hum" sound when unit is turned on. I unplugged all the speaker wires from the back of my stereo receiver, and the "humm" still exists. The only time the humm stops is when I unplug the receiver cable connector from the subwoofer module.

I removed the cover from the subwoofer and replaced the fuse, thinking that somehow that might fix the problem, however, the hum is still there. It is a constant hum that never goes away, and it is impossible to use the system. Any help or suggestions would be greatly appreciated.

Thanks!

Posted by on

  • 2 more comments 
  • Frank Rizzo Aug 05, 2008

    Thank you Simplemitch,


    So is this something I can do myself?  If it is the cable connecting the receiver and bass module, would I have to purchase a whole new cable?  I guess I'm just looking for the cheapest way of fixing it.  





  • thegeddings Aug 14, 2008

    I had the exact same problem, and ordered a new cable from BOSE,
    however that did not correct the issue. They also sent an impedance
    matcher that goes between the RCA plug and the receiver, but that did
    not help either.

    Any other ideas out there?


  • mtbkjames Jan 18, 2009

    I have the same problem. I contacted Bose technical support a while back. Unofficially, they know of the problem and newer models should not have this problem. My speakers are about five years old and have always had the problem. Tech support initially blamed bad wiring in the house. I eventually purchased a high end computer grade UPS and plugged the subwoofer into the UPS with nothing else connected to the subwoofer. The UPS was not plugged into a power source so the subwoofer was running on battery. The hum still occurs. I am still looking for a solution.

  • Don Buczkowski Oct 05, 2011

    Did you ever find out the cause of this problem? I also have a hum now, and it gets louder when I turn up the LFE knob. When I shut the power button off it (the hum) sometimes goes away for anywhere from 5-30 mins but returns again until I turn it off again.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

By chance did you get to the bottom of this issue have the same problem. ????

Posted on Apr 15, 2016

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 752 Answers

Sounds like an inadequate ground wire in the signal cable. You may have to replace the cable between the reciever and bass module. It also, however, may be IN the bass or reciever module.

Posted on Aug 05, 2008

  • Everett Robinson Jan 01, 2012

    Try using the plug adapter ones uses when they have three prong and need to use a two prong. I have a klipsch sub that did the same and this adapter stopped it. It is a ground loop that is caused by the ground in the house electric.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a Bose Acoustimass 6 Series III the receiver is Yamaha 3066, this system is a 5.1 surround sound. Then I bought a pair of Bose 901 Series VI Direct/Reflective speaker system with active equaliz


The setup is possible, but with several compromises. First off, to use the active equalizer, you'll need to insert this into one of the 2 channel AV channels limiting your listening with the equalizer to stereo only. The acoustimass subwoofer acts a driver/power regulator for the little cube speakers. It probably will not be able to drive the 901s at the correct level when attached to the Acoustimass unit as front left/right speakers. You could try running a dedicated set of speaker leads to the 901s which may work and still allow surround sound, but you'll lose the equalization capability on the 901s.

Jan 21, 2015 | Bose Speakers & Subwoofers

1 Answer

I aquired Bose Acoustimass 15 surround sound through home purchase. Hooked wires up to reciever and hdmi to tv and i got nothing. my question is, how do you turn on the sub? just plug it in?


Hey Any chance you have the Acoustimass 15 II or III? The first Acoustimass 15 has a switch. The II and II models turn off and on when it receives a signal from the source you are using. Amplifier, ect. All you need to do is make sure everything hooked up correctly and plug it in.

Aug 02, 2014 | Bose Acoustimass 15 System

1 Answer

Bose acoustimass 15 no sound out of left and right speaker


The left and right front speakers may have been blown

Jan 28, 2013 | Bose Acoustimass 15 System

1 Answer

Unable to receive optimum output. The bass is totally flat !


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..

Feb 19, 2011 | Bose Acoustimass 5 III System

2 Answers

Have this Bose system connected to my Yamaha a/v receiver


If you have it literally conencted the way you say not much good will happen.

The speaker OUTPUTs for the Yamaha feed the INPUTS on the Acoustimass Module then the satellites branch out of the Acoustimass Module's OUTPUTs.

Acoustimass module
Bose® recommends putting your Acoustimass module at the same end of the room as the
television monitor. To prevent interference, keep the module at least 2 feet (.6 m) from the
television.
• You may hide the Acoustimass module behind or under furniture, but do not block the
opening. Be sure there is at least 2 inches (5 cm) between the opening and any surface.
• If the opening faces the wall it increases the bass; if it faces away it decreases the bass.
For the most bass response, place the opening 2 to 3 inches (5 to 8 cm) from a wall or
corner.
• Stand the Acoustimass module vertically or horizontally (Figure 6). To stand it on the
cable connection end, remove the cover by gently pulling it away

Move the sub closer to a wall or corner to increase the bass.

This is a SYSTEM and as such is not designed to be pieced out or separated. I don't recommend that you try it that way. I doubt it will improve the sound.

Apr 30, 2010 | Bose Acoustimass 10 III System

1 Answer

Center, and rear surround speakers


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

Aug 28, 2008 | Bose Acoustimass 15 System

1 Answer

Bose cinemate acoustimass module


try taking ones apart that have the rumbling and see if theres anything loose inside

Jan 21, 2008 | Bose Cinemate Digital Home Theater System...

Not finding what you are looking for?
Bose Acoustimass 15 System Logo

2,051 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bose Speakers & Subwoofers Experts

Electro Med Services...
Electro Med Services...

Level 3 Expert

5653 Answers

The Knight
The Knight

Level 3 Expert

68323 Answers

Steve

Level 3 Expert

3287 Answers

Are you a Bose Speaker and Subwoofer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...