Jackhammer sound from speakers

[TSL13505 10+ year member]

Thats the best way I can describe it. Ive set the gains with a DMM, ive turned the gain all the way down, and everywhere in between and after about 5 secs of normal playing my speakers just start with a very loud deep buzzing almost jackhammer noise thats far louder than the music. Its Rainbow SLC's with a PG x100.2, and im not sure where to go from here. Its not like a alt whine or whining noise either, its like a loud annoying deep almost constant bass note noise. Any help is greatly appreciated! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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[supraman1379 10+ year member]

Is the amp filter set at high pass?

 

[TSL13505 10+ year member]

Ive tried it with highpass on and off at about 80hz or so to no avail. Not sure what to do next

 

[supraman1379 10+ year member]

When its set on High Pass, you need to have it around 120hz or higher

 

[TSL13505 10+ year member]

Perfect that solved my problems! Thanks

 

[DeLander 10+ year member]

Why does it need to be above 120Hz ? Manual states x-over 40-400Hz.

 

[DeLander 10+ year member]

Could somebody please explain the reason for such a high x-over setting in this situation? Why would you need to have such a high-pass on speakers that are rated to play down to 50Hz? Thanks

 

[yacob.naif 10+ year member]

because playing that low is completely dependant on the installation

and most people downplay the importance of proper door speaker installation

but think about playing a subwoofer with no box, or a crappy box, the thing just self-destructs. It doesn't matter if it's rated to play 2000w rms down to 18hz, if you fire up 2000w @ 18hz with a crappy box, or in a ported box without a subsonic filter, you can kiss your sub's *** goodbye

the same thing happens with door speakers

 

[DeLander 10+ year member]

Ok thanks. I figured it had to do with the install. I've heard people are really happy with the mid-bass on these speakers. that's what had me confused. Thanks again.