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DIY => DIY Audio => Topic started by: XL1000 on August 24, 2018, 07:12:24 AM

Title: 12" QTX PASSIVE SUB
Post by: XL1000 on August 24, 2018, 07:12:24 AM
Hi Gents


I have a QTX 12" Passive Subwooofer and I could dearly use a crossover that will cross at around 100Hz.
It is going to be fed by a 40 W/Ch Distribution Amplifier A1240 ELAN.
I want to pair the sub to a set of Peavey 12" Cabinets that will be powered by the same amp.


Is there anyone that can assist. Not looking for an expensive high quality but rather functional, reliable passive crossover.
Title: Re: 12" QTX PASSIVE SUB
Post by: fdlsys on August 24, 2018, 10:12:05 AM
Assuming this is a patio party setup, a simple 2nd, even 1st order filter would suffice.
If you want to have filters both on the low-pass and high-pass, then
1st order means one cap on the high-pass (full-range) and one coil (inductor) on low-pass (sub).
2nd order is 2 caps, 2 coils.
Sticking with the non-critical listening theme, iron core wound inductors and bi-polar caps will do just fine.
Easy to design and build, I can do this for you with pleasure. :mates:
Title: Re: 12" QTX PASSIVE SUB
Post by: XL1000 on August 24, 2018, 06:33:32 PM
You are a champion Mike. Iíll take you up on that.
Title: Re: 12" QTX PASSIVE SUB
Post by: fdlsys on August 24, 2018, 06:49:04 PM
 :mates: