Question about Bose Acoustimass 15 System

2 Answers

Subwoofer continuous buzz/signal noise

I am so desperate to seek for help about my problem... My sub woofer is making a buzz sound or a mid frequency signal noise when it's turned on. Regardless if it's connected to an audio source, or if the sub's volume is at minimum or maximum... I already tried to plug it in to different wall outlets in our entire house [even if it's really heavy, and I'm so thin] but the noise is still there. The last time I used my sub before this happened was just a few moments ago, I was listening to an FM station, then decided to have my dinner first and turned the radio off [and the sub woofer as well], then when I turned it back on [without having the stereo component turned on (audio source)], then I noticed the noise. So I immediately unplugged the sub woofer from the wall outlet because I'm afraid that it might explode or something. The sub woofer has a 2-prong cord, it does not have the ground [earth] thingy... I already tried to turn off the WiFi, but that doesn't help.. =( Someone, please help me .... I'm crying out loud! HUHUHUHUHU!!!

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I have the same problem. Have owned the Acoustimass 15 for about 5 years. With no connections to or from the subwoofer unit, only power appliied, I get a Geigercounter type of intermittent buzz. I tried gently poking around with a plastic pen in the electronic circuitry to try to isolate what sounds like a bad connection but no luck. Next step, Bose Tech help...my wallet hurts already.

Posted on Jan 13, 2010

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I just bought mine yesterday and have the same problem... did you find a solution (other than throwing it out the window)?

Posted on Dec 27, 2009

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Posted on Jan 02, 2017

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1 Answer

Loud buzz in sub woofer, soundbar sounds fine


How to Stop a Subwoofer Hum - HowStuffWorks

electronics.howstuffworks.com/how-to-stop-subwoofer-hum.htm
Would you like to learn how to stop your subwoofer from making a consistent low-frequent hum or buzz? Read this article to learn how to stop a subwoofer hum.

Aug 03, 2015 | Audio Players & Recorders

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Subwoofer makes noise like an untuned TV regardless of volume knob


I would suggest your crossover unit has failed in the speaker cabinet. The crossover circuit board separates the low and high frequency content of your stereos audio signal. The low frequencies go to the bass unit (woofer) and the high frequencies go to the tweeter speaker. If the capacitor on the crossover goes open or near open circuit then noise is introduced into the sound system. Replace either the capacitor or crossover unit.

Jan 18, 2014 | Cambridge Audio Minx X300 - Powered...

1 Answer

The subwoofer starts to make a loud thumping sound


Remove the signal source and power it on to see if the problem occurs without any input signal. The problem could be in the receiver and not the sub

Dec 08, 2013 | Cerwin Vega Avs-sub8 150 Watt Amplified...

1 Answer

Do you plug the sub woofer outputs to another amp?


Yes, for best results. Your subwoofer should have a seperate amplifier because it has low pass filter that produces low frequency signals. It is done by connecting the sub woofer output to the input signal of the amplifier and then connecting the output signal to the subwoofer speaker terminals. Hope this helps.

Jul 01, 2011 | Car Audio & Video

1 Answer

Htddw7600, brand new, sub amp is not working, only way to get any bass sound is to unplug the sub cable from back of main amp and touch it on side of sub out port.


H?,
You have a very good system...one of the best of SONY..SUB does not get activated automatically especially on STEREO mode.DIRECT STEREO Notes • No sound will be output from the subwoofer.
.your system has Dedicated Power Amplifier for 2 Externally Driven Sub-Woofers (200W RMS x 2)..in order to activate the sub woofer amplifier you need to make a selection on the surround modes while you are switching the modes of the surround you will see the speaker position on the display of receiver as well..if you do not see the sub woofer it wont be activated..Sound Field Program (A.F.D) is a good example to test it..
Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)

Hope this helps!

--------------------
Additionally please follow the instruction on your user manual to activate the SUB ,as is follows..

-----------------
BASS-OUT
Low-frequency (bass) signals can be directed to the
subwoofer and/or the front left and right speakers
according to the characteristics of your system. This
setting also determines the routing of the LFE (low-
frequency effect) signals found in Dolby Digital or DTS
sources.
Choices: SWFR (subwoofer), FRONT, BOTH
• Select SWFR if you connect a subwoofer. LFE and
low-frequency signals from other channels are directed
to the subwoofer according to the speaker settings.
• Select FRONT if you do not use a subwoofer. LFE and
low-frequency signals from other channels are directed
to the front speakers according to the speaker settings
(even if you have previously set the front speakers to
SML).
• Select BOTH if you connect a subwoofer and you want
to output low-frequency signals from front channels to
both the front speakers and subwoofer. LFE and low-
frequency signals from other channels are also directed
to the subwoofer according to the speaker settings. Use
this function to reinforce low-frequency signals using
the subwoofer when playing back sources such as CDs.

Jun 23, 2011 | Audio Players & Recorders

1 Answer

I have a sony HTDDW7600, i cannot get the dedicated subwoofer amp to work. The fan is running on it, but for some reason the only way i can get it to do anything is to unplug the cable that goes from the...


H?,
You have a very good system...one of the best of SONY..SUB does not get activated automatically especially on STEREO mode.DIRECT STEREO Notes • No sound will be output from the subwoofer.
.your system has Dedicated Power Amplifier for 2 Externally Driven Sub-Woofers (200W RMS x 2)..in order to activate the sub woofer amplifier you need to make a selection on the surround modes while you are switching the modes of the surround you will see the speaker position on the display of receiver as well..if you do not see the sub woofer it wont be activated..Sound Field Program (A.F.D) is a good example to test it..
Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)

Hope this helps!

--------------------
Additionally please follow the instruction on your user manual to activate the SUB ,as is follows..

-----------------
BASS-OUT
Low-frequency (bass) signals can be directed to the
subwoofer and/or the front left and right speakers
according to the characteristics of your system. This
setting also determines the routing of the LFE (low-
frequency effect) signals found in Dolby Digital or DTS
sources.
Choices: SWFR (subwoofer), FRONT, BOTH
• Select SWFR if you connect a subwoofer. LFE and
low-frequency signals from other channels are directed
to the subwoofer according to the speaker settings.
• Select FRONT if you do not use a subwoofer. LFE and
low-frequency signals from other channels are directed
to the front speakers according to the speaker settings
(even if you have previously set the front speakers to
SML).
• Select BOTH if you connect a subwoofer and you want
to output low-frequency signals from front channels to
both the front speakers and subwoofer. LFE and low-
frequency signals from other channels are also directed
to the subwoofer according to the speaker settings. Use
this function to reinforce low-frequency signals using
the subwoofer when playing back sources such as CDs.

Jun 23, 2011 | Sony MUTEKI HTDDW1600 Theater System

1 Answer

Where on my mixer should I plug the subwoofer into? Or would plugging it in somewhere else be better ?


This will depend on whether your sub-woofer is powered (has it's own built in amplifier) or not. If it is not powered it will need connecting to an amplifier. If it is powered you will need a line level output either on the amp or the mixer.
Many modern amplifiers (and some mixers) have a dedicated output for sub-woofers in which case this is the best place for it because the higher frequencies will have been filtered out.
Some high quality amplifiers like the JAMO MPA 101 have a filter switch and adjustable filter level for powering sub-woofers. You then just connect the speaker to the speaker terminals in the normal way.

Otherwise on a p.a. mixer you could use the main output, one of the auxiliary, monitor or sub-mix outputs. If you are not using the main output you will need to route signal to the appropriate output accordingly. Either way your output signal will cover the full frequency range - your subwoofer may have built in filtering or you may need to use some sort of crossover to split the signal between the sub-woofer and the rest of your speaker system.

Feb 25, 2011 | Audio Players & Recorders

1 Answer

Every time my sub hits it makes a buzzing


There may be any of several problems.

If you send high pitch signals to a speaker designed for lows, it can cause waves to propagate outward causing a buzzing. Look up the specs on the speaker and verify that your crossover cuts off well below the high end frequency for this speaker.

Another problem can be due to the mounting which can resonate. This should be mounted on at least plywood that is 1/2 inch or more thick. It needs to be wood as plastic or metal will rattle and buzz.

Another problem can be the wiring near this can rattle and buzz.

Check out these possibilities.

Dec 22, 2009 | Kicker 01C8VR4 Car Subwoofer

1 Answer

What should the subsonic filter be at


The subsonic filter is to help your system's overall performance by blocking frequencies that your subwoofer cannot effectively produce. For example, if you have a single 10 inch sub, it's not likely to be able to produce sound much lower than 60-80Hz with any respectable volume. If you have the subsonic filter on and set to 60Hz, it will prevent a 40Hz tone from being delivered to the sub. If the subsonic filter is turned off, your sub will get everything, and it will try to produce every sound. If it gets a 40Hz tone, it will make the sub work extra hard without any audible noise. It'll just degrade the overall so the answer to "shoud the subsonic filter stay off" would be "it depends on your system" but in most cases, you should keep it on, and set it to the low end of your subwoofer or woofer range. This also applies to filters on mids and highs.

May 15, 2009 | Performance Teknique ICBM-2400 Digital...

1 Answer

Woofer making horrible noise! HELP!


Think as an expert... Probably from my experience repairing woofers etc... the cone (1) or the spider (2) isn't well glued onto the woofer skeleton(or both???) The woofer cone must be absolutely centered or else you will get those clicks in low frequencies(you also get them in higher frequencies but you can't hear them!) I must say that it is very difficult to repair a woofer by your own. I suggest to return it back where you bought it and take another one (i suppose that you have a guarantee ha?).

Aug 10, 2007 | Alpine SWR-1542D Car Subwoofer

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