| Aggie76 |
Need some help, turned on Matrix Reloaded last night and found that I was getting a loud rumble/weird sound coming from my Paradigm Profile series 12" subwoofer when the bass was really hitting. The only way I could eliminate it was to turn off the subwoofer level and subwoofer cut-off frequency to zero and do without bass. Tried a couple other DVD's this a.m. and the same thing is happening. I am not an audiophile so any help would be terrific.
:( |
|
|
| Warzau |
| Hmm could it be the speaker phase? |
|
|
| imraw |
| You may want to check out your connection to the sub or the sub output on the back of your receiver. Something may be jacked up there. Tough to give you any advice just on the information you have given. Could be a ground problem in the cable too. |
|
|
| Aggie76 |
What is best way to check the phase? Any other info I can share to help diagnose? Guess I might have to find someone locally to pay a house call on my system!
imraw - we used to live in OP too, just off 132nd and Quivera in St. Andrews. Hated to leave but my company transfered us to Atlanta, then Austin and now up here in IL. |
|
|
| Warzau |
Lifted from speaker FAQ
"How does one connect a subwoofer in the right phase?
When you want to check if the phasing is correct between the subwoofer and the main system, you need, if you lack measuring instruments, to know what to listen for when phase is changed from wrong to wright. The answer is: Much and full-toned, opposed to a hollow/thin sound, as the wrong phase will produce. The best test signal is pink noise, preferably octave band filtered centered to 80 Hz (or to the cut off frequency of your subwoofer filter). One person is sitting close to the subwoofer and connecting and the other in the favourite sofa and listening. When the sound is strongest, the cooperation with the main system is best. You may need to adjust the sound level of the subwoofer compared to the main system when the right phase has been detected, but the relative phase between them is not affected when the relative level is changed, so there is no need to go back and check phasing again. When the phasing is right, all you need to do is to adjust the subwoofer level. If you move the main speaker considerable in relation to the subwoofer, the phasing would have to be rechecked however." |
|
|
| imraw |
Aggie,
I love it here in OP. I moved up from Wichita in May. Now, back to the problem: are you having the same problems when you play CDs? If you are then I am willing to bet it has to do with the output of the reciever or input to the sub. You are still really vague with your information and when it is doing this though. |
|
|
| ECON1 |
| For what it's worth, my powered Paradigm subwoofer (10") had to go back to the dealer after about a year and have the power supply replaced to eliminate the hum. YMMV. |
|
|
| Aggie76 |
Mine only seems to give the response to low bass sounds and only on those that really generate some level. I've tried with several CD's and the response is there also. It seems to sound a little metallic-like, a higher frequency buzz when louder bass notes sound.
My dealer is down in Austin where I bought them, I will check for a nearby dealer in the area just in case I need to take it in. |
|
|
| Aggie76 |
| After some phone conversation it appears the voice coil may be bad. Looks like a replacement is needed. |
|
|
| Aggie76 |
Yep, it was the coil and dealer replaced it under warranty so all is right again. Thanks for advice everyone.
:D |
|
|
|
