Help, weird sound

[FurbiesAndBeans 10+ year member]

OK, so i just recently popped my trunk with the volume up only to find my subs making a weird sound. It sounds like it's hitting wood, but i know thats not possible. What i had recently done was inverted the polarity, put the crossover level a little higher, and i believe my uncle raised the bass boost and gain on the amp. My dad said they are clipping and that i should turn it down.

I'm running a sledgehammer box with 2 mtx 8500s

The amp is an Absolute EVD 2200, wired at 4 ohms, that puts out 360w RMS, which is wayy less than what the subs can take. Oh, and my cross over is set at 130 hz cut off.

The only thing that comes to my mind is that i had to cut the box about 3 inches width wise in order for it to fit my trunk. Could it be that by making the box smaller the subs aren't getting as much air as they need to and started distorting?

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[Electrodynamic 10+ year member]

You should turn it down (by "it" I mean the volume and the crossover and the gain - set your gain properly).

 

[TeoTorriatte 10+ year member]

OK, so i just recently popped my trunk with the volume up only to find my subs making a weird sound. It sounds like it's hitting wood, but i know thats not possible. What i had recently done was inverted the polarity, put the crossover level a little higher, and i believe my uncle raised the bass boost and gain on the amp. My dad said they are clipping and that i should turn it down.
I'm running a sledgehammer box with 2 mtx 8500s

The amp is an Absolute EVD 2200, wired at 4 ohms, that puts out 360w RMS, which is wayy less than what the subs can take. Oh, and my cross over is set at 130 hz cut off.

The only thing that comes to my mind is that i had to cut the box about 3 inches width wise in order for it to fit my trunk. Could it be that by making the box smaller the subs aren't getting as much air as they need to and started distorting?

You just described clipping....
See Electrodynamics post above for how to remedy this...

 

[FurbiesAndBeans 10+ year member]

Yea, but any idea why it's clipping without even having the wattage it's suppose to have?

 

[Electrodynamic 10+ year member]

Yea, but any idea why it's clipping without even having the wattage it's suppose to have?

Yep, refer to the last 4 words of my previous reply. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

You can clip any amplifier. Set your gains correctly.

 

[FurbiesAndBeans 10+ year member]

Yep, refer to the last 4 words of my previous reply. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
You can clip any amplifier. Set your gains correctly.

Dont you mean subwoofer =)