Crossover?

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seansy59

Active DJ
Jan 16, 2012
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Would I need an external crossover with this sub if it says it has a "Built in Passive Crossover"? I would have it on a separate bridged amp from my mains. I am looking for a good priced sub that will add some kick to an upcoming gig I have. I've been using a pair of 15" speakers and they have done fantastic even at a 100 person party in a large gymnasium sized room as far as loudness and bass goes (actually got complaints to turn it down because of too much "boom"). But the gig I have coming up will have about 150 people outside at a pool party. Would a sub help? Or should I just wing it with my 2 15" speakers. It is for a friend, so its not like I will lose a client. I have DJ'd for him about 6 times already. The only problem I have is space, it all has to fit into my SUV.

Please note: I am a hobby DJ, so I don't have the biggest, baddest, high quality equipment. The stuff I use it mid-range "get the job done" quality since its just a family and friend business. But it works, and people keep coming back to me, so I must be doing something right. I don't have large budgets because I don't DJ constantly. In fact, even 1 or 2 "popular DJ's" around here have given up and moved on because of no business. Where I live, people are cheap!

http://www.ebay.com/itm/Behringer-V...ltDomain_0&hash=item46034314a3#ht_3444wt_1101
 
+1 with what Scott said, but a cross-over handles 2 parts, the top and the sub. You need to remove the under 100 Hz data from the tops and limit the sub to it's range.

That particular sub is NOT a powered unit and does not have a crossover that will feed a top, just a limit on the top end of the sub (low-pass filter). So to use this one, you will need an appropriate amplifier and then some means of adjusting the tops to remove the sub-100Hz data (either via a high pass filter in the top or a cross-over).

With 15" tops, this 15" sub won't add a whole lot to the sound. You're better off saving up and getting an 18" sub or at least a horn loaded 15" to complement the 15" top woofer.
 
Alright, thanks everyone! I will probably stick with what I have. When I bought the 15's, I kept in mind to be using them without a sub, so I got the 15's to have the added bass since I would probably have problem fitting an 18" sub in my SUV. The 15's have done me well with the sound quality, and I have gotten noise complaints from them already, which is a plus for a sound setup!
 
For 150 people outside at a pool party, a sub cabinet would help with tone warmth. It would certainly compliment a pair of 15s when bi-amping with an electronic crossover.

The 15s give you thump. The 18s give you rumble. :)
 
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