An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 500 times.
Re: when no music is on the subwoofer makes low rumble...
It's passing "engine noise" at 80hz and below. If you turn off the crossover on the amp, it will be unbelieveably loud. Check your RCA connections at the deck and at the amp. Then make sure your ground wire to the amp is solid and not oxidized. Check your battery terminal as well. Make sure your ground wire is the same gague as the power, and that it's grounded to the floor, not a seat bolt or side panel, as they are very poor grounds. Hope this helps. If you still have an issue, post a comment and I can help some more.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
A woofer is a device that producers low frequency bass sounds. Often in a form of Sub Woofer. Bass sounds are not directional. So once set up it will give the rumble and vibration needed to the sound system.
The woofer would only blow if it was overloaded with too much signal. The common cause of this connecting a speaker of lower power than the amp or ohms than it. The simple way to cut out rumble is at the amp by reducing the bass, however most amps will cut all the bass and not what you want. Another way is a filter designed to cutt bass or low sounds. However your best bet is to use a Graphic Equalizer to control the tone, most have a 31khz control which will cutt the rumble you describe, but keep the wanted bass sound.
I just fixed my bass amp with a similar problem last week: the problem is related to a loose connection on the PCB board (likely).
A bass amp is a rough place for circuitry: the low rumble and power shake a bass amp more than a guitar amp.
In my case, the power transistors needed to be re-soldered and then the grounding bolts and screws needed to be removed and cleaned because the connection was bad. Remember that when two different metals needed for an electric connection are toughing, there is the likelyhood that corrosion WILL happen.
My bass amp did basically the same thing yours did: sounded good at low volumes, but at higher volumes it would act up.
In short, there is nothing you can do (unless you are a repair person): you need to take it to a local music shop and have a tech fix the intermittant contact problem: someone who knows what they are doing should only take an hour at most.
Hello, That rumble could be several things, start by switching your patch cables to see if there is a fault in the sine. If not it could be the amplifier trying to pull a constant source of current through it to operate and is being corrupted by a fault in the circuitry, or a feed back look of some sort. Either way, if you can't find a problem with your input signal, your sub will need repair or replacement. I hope this helps...
I'm having the same issue as pdoug: Sub rumbles in test mode, doesn't produce sound otherwise. Which makes me suspect it's the receiver itself -- the filter (or whatever) it is that should be separating the bass signal and sending it to the sub is not working. At least that's my guess.
Sealed box and somewhat large if they are 12's I usually try to get 3 cubic feet overall internal dimensions and generally the inside dimensions will be 13" tall 32" wide and 13"-14" inches deep. with no divider and make sure the box is sealed. Personally I like to phase the speakers backwards. Gives the bass a little more rumble.