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!!!
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.
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A powered subwoofer can be connected directly to a TV's output jacks to boost the bass. An audio Y-adapter condenses the stereo signals into a single signal for the subwoofer to reproduce the bass frequencies. ... Subwoofers connect with a single 1/4-inch audio cable.
https://www.techwalla.com/articles/how-to-hook-a-powered-subwoofer-directly-to-a-tv
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.
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.
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.
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.
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.
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.
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.
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?).
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