Question about Infinity BU-80 Speaker

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When I turn on my BU 80 subwoofer without any audio input, it has generated the sound 'Wu", from low volume to large volume.

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3 Answers

Only subwoofer works at high volumes


It could be your receiver but you can try seeing if the Woofer has a input knob at the back, maybe this down, or maybe.if possible turn down the amount going to the woofer with your receiver.

Dec 27, 2007 | Kicker 02S10L74 Car Subwoofer

1 Answer

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

Amp wont play


Quick test...with your Lanzar volume all the way down, connect MP3 player or other type audio source directly to the subwoofer input connection. Play audio and slowly increase volume control. If subwoofer is working using this method, reconnect and check for audio output to Lanzer connection problem, or subwoofer "settings" issues with the receiver.

Nov 11, 2013 | Lanzar VCTBS8 Vector 8-Inch Super-Slim...

1 Answer

I have the following setup: AV Receiver: Pioneer


Very common problem with today's receivers. Receivers made today don't have a true preamp section in the amplifier and do not amplify the sound to the extent of an older receiver. I have large 15" front speakers on my system, and have stuck with my 15 year old receiver just because I know that a new receiver will not have the power to drive them well. Many of the newer receivers need to be turned up to 50-60% before you can even hear anything from the speakers.

Aug 08, 2013 | Pioneer Audio Players & Recorders

1 Answer

Woofer sound distorted


What audio source you put into your Amp? you can lower the source volume also the amp volume to confirm, where the problem come.
Source input is also important whether you using low level or hi level input.

Nov 18, 2012 | Acoustic Research P315 HO Speaker

1 Answer

Jensen QX-80 keeps cutting out even when on low volume. Have tested another SW and that worked fine so leads, speaker amp ok. Tried audio out from blue ray and same problem, the other SW was fine, the QX...


If I understand you, you're observing the speaker cone moving in one direction without any input. That would say the internal amp is malfunctioning and pushing DC to the speaker. Beyond that I can't say, but it is endangering the driver.

Aug 23, 2011 | Jensen JPS10 Subwoofer

1 Answer

Is it possible to hook the infinity bu-1 subwoofer to a home theater system where the subwoofer output is straight power say it"s like 25 watts coming out of that one channel and before the original...


In general higher speaker impedance is safer than lower impedance for the amp. Don't expect anything impressive re: audio output from a passive (unpowered) sub if your HTS says it pushes only 25 watts. Without frequency bandwidth and distortion noted the spec is virtually useless as a comparison.

The BU-1 is a powered sub that accepts either RCA Line Level or HIGH LEVEL amplifier power. If you use the latter, impedance is a non-issue because the input feeds the BU-1's internal amp, not the speaker directly. You should be okay.

Perhaps if we knew some specifics about the HTS we could do more than guess.

Jul 21, 2010 | Infinity BU-1 Speaker

1 Answer

Makes thumping noise without input from receiver


So no wires plugged into it at all? Sounds like a cold solder joint on a board or a bad connection inside the amplifier.

Jan 22, 2010 | Infinity BU-150 Speaker

1 Answer

SUB WOOFER PROBLEMS


design u r aucostics properly

Jan 10, 2009 | Infinity BU-80 Speaker

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