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Old 10-22-2012, 02:28 AM
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Question series vs parallel 6th order

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.
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File Type: jpg bandpass pic.jpg (164.8 KB, 62 views)
File Type: jpg bandpass pic 2.jpg (164.4 KB, 48 views)
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File Type: pdf pioneer install spec TS-W3004SPL.pdf (1.43 MB, 4 views)
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Old 10-22-2012, 11:22 AM
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I have never seen a parallel tuned 6th work....EVER. I'd go series tuned.
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Old 10-22-2012, 11:30 AM
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Quote:
Originally Posted by Infinitelybaffled View Post
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.
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File Type: jpg bandpass pic 4.jpg (164.5 KB, 26 views)
File Type: jpg bandpass pic 5.jpg (164.3 KB, 29 views)

Last edited by bulldogfreddy; 10-22-2012 at 12:24 PM.
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Old 10-25-2012, 04:09 AM
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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.
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File Type: jpg 20120726_211635_resized.jpg (136.7 KB, 54 views)
File Type: jpg 20121024_202528_resized.jpg (79.7 KB, 49 views)

Last edited by bulldogfreddy; 10-25-2012 at 04:23 AM.
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Old 10-25-2012, 06:53 AM
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Looks great! I would run a square port over a 1:19 any day, lol. That's just too narrow.
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Old 10-26-2012, 03:43 AM
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Quote:
Originally Posted by SPLEclipse View Post
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.
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Last edited by bulldogfreddy; 10-26-2012 at 05:27 AM.
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Old 10-26-2012, 06:43 AM
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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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Old 10-26-2012, 11:58 AM
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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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File Type: jpg 20121026 box graph.jpg (148.8 KB, 20 views)
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Old 10-27-2012, 12:46 AM
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Quote:
Originally Posted by Infinitelybaffled View Post
I have never seen a parallel tuned 6th work....EVER. I'd go series tuned.
Mine works great
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Old 10-27-2012, 12:56 AM
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Pretty sure Yuey runs a parallel tuned 6th order and a21brava had one in his 300. Both of those got loud and move a LOT of air.

I run a series tuned and it works well, took a little trial & error to get it right. But I don't model shit either...
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