Hdx3 18 bandpass design

[basshead08 10+ year member]

Is there anywhere to get recommended bandpass enclosure dimensions and tuning? I'm doing a blowthrough in my truck and can't go with a simple ported box because the bed isn't tall enough to accommodate the sub and box. 

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[Jeffdachef 5,000+ posts]

they are only good in 6th orders which are bigger than 4ths. Dont even waste your time with a 4th on them.  hit up hunter martin on facebook for a design.  EZDB designs is also his business name on facebook. he's made loads of 160db builds.

 

[basshead08 10+ year member]

they are only good in 6th orders which are bigger than 4ths. Dont even waste your time with a 4th on them.  hit up hunter martin on facebook for a design.  EZDB designs is also his business name on facebook. he's made loads of 160db builds.

Thanks sent him a message on Facebook 

 

[Popwarhomie 5,000+ posts]

My buddy and I had 4 HDC3 15s sitting waiting for another build asked the owner if we could throw them in my buddies 6 15 4th order and he said sure. Did a 158.0 sealed with 4 in the 4th. But they do much better in a 6th. I put two of my HDC3 18s in my buddies 2 18" 6th order blow through and they did very nicely. 

Here is a shit video of the 6th order with 2 BTL 18s. IIRC it did a 54 on an Everest 5k.