[asifqabil]

hi,
i just wired up my behringer ep4000 amp to 1 peavey black widow pa speaker which runs 4ohms at 350w rms and its very loud, but i connected 1 500wrms subwoofer but it doesent sounf right.i put the sub in my gale 3090w enclosure and its sealed tight...

why is the sub not pumping bass like it should ?....my 150w gale 3090w was way louder...

 

[Mike P.]

You put a peavey black widow in a gale 3090w enclosure?

 

[asifqabil]

no.lol
channel a has a peavey and channel b has a 500w sub in a gale 3090w enclosure

?

 

[Mike P.]

Got it. What 500w sub went into the Gale?

 

[asifqabil]

its a boss audio chaos special edition, i know its a car sub but its 4 ohms.

thanx

 

[Mike P.]

Ok, I remeber now. The Boss Chaos that there are no specs for. Without the specs it's impossible to say what size cabinet it would need. That plus the fact the Peavey Black Widow probably has has a much higher sensitivity rating.

 

[asifqabil]

here are some specs http://www.bossaudio.com/main/911

 

[asifqabil]

sorry

peavey is 15" in orginal cabinet.the boss audio sub is 12".the gale 3090w cabinet im using is also a 12".

 

[asifqabil]

ok gale dimensions are
Dimensions (H x W x D) 420 x 420 x 420mm
16.5 x 16.5 x 16.5”

we can forget about the peavey for now.sorry if it seems im taking the mick, thanx for your help

 

[asifqabil]

the mounting depth for the boss is 6-11/16”

 

[Mike P.]

We need at least the minimum T/S parameters. Here's the Parameters from another sub to give you an idea of what is needed.

Sensitivity 91dB
Re 3.6 ohms
Vas 4.7 cubic feet
Qts 0.44
Fs 28.36Hz
Qes 0.47
Qms 7.35
Xmax 12 mm
Power handling 250 watts.

Without these specs for the Boss sub there is nothing we can do.

 

[asifqabil]

Sensitivity 95db
re 3.6
vas 2.265 cubic feet
qts 1.289
fs 33
qes 1.706
qms 5.273
xmax 0.315
power handling 500wrms/1000w peak

these are at 4 ohm

cheers

 

[Mike P.]

Now wer're getting somewhere. Here's why it doesn't sound good. Pink is ported and yellow is sealed, in the cabinet size of the Gale.

 

[asifqabil]

ok, so its best to use a sealed right ?...

 

[Mike P.]

It would be best to get a differnt sub, next option would be to use the Boss sub sealed.

 

[asifqabil]

ok thanx, i will use ehe boss sub sealed.1 more quick qusetion, if i was to connect a active subwoofer to a power amp what would happen ?...

i really appreciate your help

 

[Mario]

ok thanx, i will use ehe boss sub sealed.1 more quick qusetion, if i was to connect a active subwoofer to a power amp what would happen ?...

i really appreciate your help

If your active sub has speaker level inputs and you use them to connect to the amp then you'll just have to adjust the gain to match the sub to you speakers. If you try connecting your amp to the sub through line level inputs (with a custom made cable, no less) then bad things would happen. Either you'll get mad clipping or your sub will cease to exist in the following fashion: :explode: