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Old 3rd August 2009, 02:38 PM   #21
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What kinda power into what load is your amp capable of? The TangBand W6-1139 is a 4ohm driver, 6.5" subwoofer, 11.5mm xmax. There is a design on Parts Express that uses 4 of them, you could half that if necessary or maybe even use 3 if thats all that will fit. http://www.parts-express.com/project...ject=Boogieman


Does your car have the mounting holes that the Bose box uses to hold it down? I suppose you could make a box with no bottom on it if it was tightly secured to the carpeted deck. This would give you a bit more volume or even use a thinner piece of ply for that panel as it will be held in place sandwiched between the box and deck.
Are you gonna try to incorporate midrange drivers into this box like the Bose has or go about the rear fill another way?
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Old 3rd August 2009, 06:12 PM   #22
Arno is offline Arno  Europe
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@navin: thanks for the links. This shallow sub looks interesting.

@901Fixer: Audison LRX amp can delivers 65W per channel on 4 ohm, 105W per channel on 2 ohm (continuous RMS). In bridge mode, it's 220W on 4 ohm.

@901Fixer: yes, my car has the mounting holes. Eventually I may add midrange drivers, it might be nice to have a tiny bit of rear fill.
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Old 4th August 2009, 12:45 AM   #23
Nanook is offline Nanook  Canada
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Default Arno...

a Tangband based sub like the Boogieman would definitely work...but if you make an Isobaric , you can get away with a lot smaller enclosure...

regarding "rear fill", I've yet to go to a live performance of any musical event that asks the audience to sit with their backs to the stage...
If properly done rear fill is OK, but a good basic layout of door speakers, and dash and/or kick panel speakers can easily portray music in a very appealing manner.
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Old 4th August 2009, 06:40 AM   #24
navin is offline navin  India
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Default Re: Arno...

Quote:
@901Fixer: Audison LRX amp can delivers 65W per channel on 4 ohm, 105W per channel on 2 ohm (continuous RMS). In bridge mode, it's 220W on 4 ohm.

@901Fixer: yes, my car has the mounting holes. Eventually I may add midrange drivers, it might be nice to have a tiny bit of rear fill. [/B]
If you intend for this box to fullfill the same need as it did earlier (woofer + wide range) you might be better of using a woofer such as the Dayton, Fountek, Peerless linked below
http://www.parts-express.com/pe/show...number=295-335

http://www.madisound.com/catalog/pro...oducts_id=8492

http://www.madisound.com/catalog/pro...oducts_id=8234

Otherwise as a subwoofer the Tangband 1139 will go lower
and produce more low bass levels

http://www.parts-express.com/pe/show...number=264-832

Quote:
Originally posted by Nanook
a Tangband based sub like the Boogieman would definitely work...but if you make an Isobaric , you can get away with a lot smaller enclosure...If properly done rear fill is OK, but a good basic layout of door speakers, and dash and/or kick panel speakers can easily portray music in a very appealing manner.
exactly something like this
http://www.stardi.com/diy-4th-order-...subwoofer-5-6/

as far as rear fill goes it is often just personal taste. if the HU of the car audio system has TA (time alignment) for all channels the rear fill can well be used for spatial effects.

BTW the audison amps are quite good esp the VRx series.
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Old 4th August 2009, 06:53 AM   #25
grufti is offline grufti  United States
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fill it all with sand or better yet lead shot, that adds weight.
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Old 2nd September 2009, 08:37 PM   #26
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Do you have any pictures of where this thing goes in the car? I can't imagine the car being so small that there isn't somewhere available that can be fiberglassed and accomodate one of the uber-shallow mount style subwoofers or a couple of those tiny tangbands.

If you've got space in the engine compartment or anywhere else outside of the interior cabin, you could build a 4th order bandpass and run the vents into the cabin... I always wanted to do that with a Pontiac Fiero.
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Old 24th September 2012, 03:21 PM   #27
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Originally Posted by GM View Post
FWIW, when I looked at the photos the other day I saw a rather innovatively laid out, high tuned (small front chamber) 6th order BP once secured/sealed to a surface with a pair of high Fs 'full-range' drivers to presumably add some surround ambiance and after taking a 'fresh' look just now I still believe it is. IOW, other than the layout, just another typical B@$3 alignment.

GM
Looks to me like there's some pretty decent engineering here. For the life of me, I've never been able to understand all the hate for Bose. (Don't want to hijack the thread.) Basically their stuff is crazy overpriced, but I've never found the engineering to be all that bad. I think that if their stuff sold for 1/4 the price people wouldn't hate them as much. But if they sold their stuff for 1/4 the price they likely would have gone belly up thirty years ago. Heaven knows there have been tons of well-engineered speakers which went kaput because the manufacturers sold them for a price that was too low. (cough cough NHT)
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Old 24th September 2012, 10:27 PM   #28
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Originally Posted by ThyDntWntMusic View Post
of course its a woofer!

I had two 4inch WOOFERS doing 126dB at 44Hz, in car of course, but they really weren't woofers! they had an fs of 100hz!
They might have been doing 126dB when given a 44 Hz signal, but are you sure that the output was 44 Hz and not a whole lot of distortion?
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Old 25th September 2012, 04:09 AM   #29
GM is offline GM  United States
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Originally Posted by Patrick Bateman View Post
Looks to me like there's some pretty decent engineering here. For the life of me, I've never been able to understand all the hate for Bose.
Didn't say it wasn't, just what was old is yet new again. They often take lapsed patents and make them their own, claiming it their breakthrough innovation.

I intensely dislike them for their bully type marketing, like trying to strong arm Consumers Union for having the audacity to publish an unflattering, yet accurate, frequency response of one of those lifestyle two way cube, BP sub systems and IIRC the private individual that posted his own similar one on-line.

Then there was the bogus marketing where what potential customers heard in the stores was being enhanced behind the scenes. Ditto the early door-to-door selling of the TL loaded radio/CD player. Me and a buddy got taken in on this scam. I didn't buy one, but recommended it based on the demo, but what he paid $800 for back in the mid '80s didn't perform nearly as well and he got no satisfaction from corporate AFAIK.

As for pricing, to charge less than the market will bear is a bad business plan, so can't fault them for that. After all, last time I noticed, they sell more consumer systems than most others combined, so they are apparently a bargain for those folks who aspire to own them, as unbelievable as that seems to folks like us.

GM
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Old 25th September 2012, 07:27 AM   #30
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Originally Posted by Brian Steele View Post
They might have been doing 126dB when given a 44 Hz signal, but are you sure that the output was 44 Hz and not a whole lot of distortion?
...no? it was 44hz.
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