L7 bottoms out.

[m4i2k2e2 10+ year member]

i have shops check over my setting and everything. the L7 since the day i got has been ****ing bottoming out. it was in a small sealed box. now its in a 2.5 cubic foot boxed tuned @ 35 Hz. still does it. how can i test if its working properly? its a dual 4 ohm sub. i can throw a meter on it and get an ohm reading right? were do i put the meter? thanks guys. i want to get to the bottom of this shit.

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[Atimm693 10+ year member]

Check the amp gains. Did you install it yourself? Check where you hook up the speaker terminals with the meter. It should read somewhere between 3.5 and 5.

If its way off the meter, then its blown.

 

[brchd]

it could be lead slap....what year L7 is it?

 

[TheFiverMan 10+ year member]

try 3-3.5cf

 

[profundus-sanus 10+ year member]

http://www.caraudio.com/forum/showthread.php?t=237045

 

[stishdr 10+ year member]

i have 2 12's in a 6.5ft^3 box @ 35hz, hifonics bxi2006d, haven't had any problems w/ bottoming out or anything....

 

[blackbonnie 5,000+ posts]

never had any problems with mine

 

[psych0ticnemes1 5,000+ posts]

shouldn't be bottoming out with that amp. Your gain shouldn't be past 1/3 with bass boost on 0. I have 2v pre-outs and run my sub-out on -8 and i still hit the voltage on a 1/3 turn.

 

[InsaneKreationz]

turn on subsonic filter.

Check gains.

Bass boost = off.

 

[m4i2k2e2 10+ year member]

its the new model. i have to have my gain around 1/2 other wise is very dam quiet. its in a 2.5 cubic foot box tuned at 35Hz. my zx750.1 is a refurb so.......... i mean on my friends amp it does fine. thats an hk1000 from MA audio. it gets louder. my neighbor is the one who told me its bottoming out. what does it sound like, just to make sure.

 

[tcguy85 10+ year member]

play a test tone way WAY under your tuning (like 10-20hz) with your subsonic filter off and you'll see the sub move extremely far and hear a cracking sound. thats bottoming out. your sub probably isn't bottoming out playing normal music off that power as long as you have a subsonic filter on.

 

[m4i2k2e2 10+ year member]

ran wires from my friends amp to my sub in my truck and, it sounded louder and didnt make the noise. i think my amp is ****ed. its a refurbished one i got on ebay. zx750.1.

 

[blackbonnie 5,000+ posts]

sell it

 

[sundownz Pro Seller]

Amp clipping probably. You are looking for too much output from the power you have on tap.