What could be causing my Powered Sub Woofer to make crackling noises when stereo is on or off?

https://community.klipsch.com/index.php?/profile/58706-swa99a/

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

FIRST OF ALL --- THERE IS A FEW THINGS YOU NEED TO KNOW BEFORE HOOKING UP
A WOOFER LIKE THIS ---- IS THIS A STORE BOUGHT POWERED SUB WOOFER ? DOES IT HAVE IT'S OWN CROSSOVER BUILT INSIDE ?? I WOULD GUESS IT NEEDS TO BE HOOKED
UP TO A SUB WOOFER OUTPUT FOUND ON THE BACK OF THE IN DASH PLAYER ..
THE WOOFER NEEDS TO RECEIVE ONLY LOW FREQUENCY AUDIO WHICH MOST OF THE NEWER CAR STEREOS PROVIDE BY AN RCA JACK ON A SHORT WIRE COMING OUT OF THE STEREO ...
IF YOU TRY AND TAP IT TO FULL RANGE SPEAKERS THAT ALREADY ARE CONNECTED TO AN AMPLIFIED SIGNAL THE SOUND WILL BE DISTORTED .......
POWERED SUB WOOFERS NEED A LINE LEVEL INPUT WHICH IS MUCH LOWER THAN SAY
SPEAKERS ALREADY RECEIVING AN AMPLIFIED SIGNAL.
POWERED WOOFER WILL ALSO NEED TO HAVE A 12 VOLT ELECTRICAL CONNECTION AND A GROUND WIRE TO OPERATE THE AMPLIFIER BUILT INSIDE.
IF YOU HAVE NO EXPERIENCE WITH THIS TYPE OF HOOK UP I WOULD STRONGLY RECOMMEND SOMEONE WHO DOES [ CAR AUDIO SHOP ]

Hi,
I assume that the sub-woofer is "POWERED TYPE" ..otherwise if it is a PASSIVE type you can not use it as sub but regular speaker.....
So,if it has a power plug for 110 VAC it is "powered type" ..Than you need to find out the AUDIO output 2xRCA plugs on the back and connect it to the 1x RCA input of Sub...you need a "Y type RCA cable " to make 2x stereo output into the 1x MONO input RCA jacks for sub..you need volume adjustment once on the sub controls (if it is a Powered )

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Hope this helps!

Hi,sorry but you can not connect it directly like other sub-woofers..
Bose 2683 Powered Subwoofer is part of Bose Lifestyle 5 system, Please note that you will need the 5-pin DIN cable that connects the subwoofer to the base or "Music Center". and the 4 pronged connections for its own stereo speaker output not input from another stereo..
Sorry....but if you can arrange some handy man nearby ,he may get into the DIN cable to locate the subwoofer signal 2x input leads than you can use that leads for connecting into single sub woofer out let of your system...otherwise try to sell BOSE which can easily buy brand new up to date powered sub..
.
Take care and please Remember to rate/vote and give me 4 Thumbs Up
for Helping out the Community :)
Hope this helps!

i would say so sounds like woofer is dying unless u pull it apart and replace the woofer it doesnt have to be same brand just same size and watts and ohms then u can keep it

You will need an amplifier or 2 channel receiver. Hook the sub out rca jack to the rca inputs on this new amp or receiver and hook the speaker terminals on sub to speaker terminals on same amp or receiver. Your Yamaha receiver doesn't have any power for a passive sub.Just pick up any old fairly high powered receiver for fifty dollars and you're good to go.I use old dolby pro logic receivers as they are a dime a dozen today. Good luck.

Crackling is an unusual noise but typically indicates a bad capacitor in the amplifier board. This can be a rather costly repair but first we will go through basic trouble shooting steps.

Reduce the volume on the sub and see if the noise remains and changes with the volume.

Unplug the sub and disconnect interconnect cables. With both hands push softly on the speaker cone to move it in, let it back out and do this a few times. If you hear a scraping noise and some resistance your driver is misaligned and you need to recone or replace the driver.

Check all your interconnect cables, there may be a bad internal connection (usually causes pops and cut-outs).

Let me know how things workout. If it makes the crackling noise at all volumes and the driver seems fine then I would seek a professional to repair it, or replace.

Cheers,

Kevin

You can y out from the main out to the sub.This output is post volume control. set level on sub to desired balance of lows feq to highs

Chances are if The Receiver only has sound in Stereo Direct Mode and all surround modes and Sub out are Inop the DSP (Digital Signal Processing) Card is most likey defective. These boards are not available from marantz (D&M Holdings) and must be Component level repaired which usually is not cheap. If Only the Sub out is not working check setup to be sure sub woofer is set for on. Also If On Screen setup menu does not appear on video monitor Unit may need to be Reset manually which entails discharging a Capaitor on main P.C.B Contact [email protected] for details

A quick quess of mine is the following:

The OVERLOAD indicator lights up when the receiver is maxing out on the current it is sending to the speakers. My guess is there is possibly something wrong with the receiver itself, especially since the B speakers won't play. Either that, or something is broken in your speakers or you are using a set of speakers that have too low an impedance rating for your receiver.