I have 4 Pioneer TS-W3004SPL running in a ported box at 37 hz off one mojo 4kw but looking at changing to a series or parallel bandpass in a Avalanche. I already started cutting wood for the parallel 6th order but thinking about going with a quasi 6th order. I have attached of what I am dealing with. Just trying to find out which one will have more pressure. Thanks in advance.
I have never seen a parallel tuned 6th work....EVER. I'd go series tuned.
Thanks, I was wonder because there I have seen people start a parallel build but with no end results. It looks good on paper but had that last minute feeling about it. I think it might be suited for home better that car audio. With the series (quasi) 6th order, I am worry about the cone displacement and dg gain on the charts I have attached with box ratio.
Last edited by bulldogfreddy; 10-22-2012 at 12:24 PM.
Started on project, just need to cut the baffles for subs and ports. The LF (rear) slot port 1 x 19 will be too small and have some port noise so might have to go with a square port for now. The other box is what I have currently in there.
Last edited by bulldogfreddy; 10-25-2012 at 04:23 AM.
Looks great! I would run a square port over a 1:19 any day, lol. That's just too narrow.
What do you think about 33 x 1.5 x 19 L port for the rear chambers on each. I know that will cause more group delay. 11 3/8 x 19 (1 of 2) and 21 1/2 x 19 (2 of 2) to make L port. I will have about 7 inch opening left from the end of the port wall for air flow. Trying to see what is they best to run this port.
Last edited by bulldogfreddy; 10-26-2012 at 05:27 AM.
Quasi 6th is the way to go. Looking at your design, be sure to put a v in between the ports so they don't fire at each other. Also if you have to use a 19x1.5 port take 5" off the length. You won't be the best on the meter but you'll still sound great.
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Thanks, it will only change my fb from 27 to around 28. you stated that I will not be the best on the meter but still sound good? Is that because of the narrow port or because of my passband range? I finally realized that it is hard to be tuned low vs being best on meter vs huge box vs big power amps (10,000 and above) and daily driver. Thanks in advance.
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