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Old 6th February 2011, 11:39 PM   #111
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Quote:
Originally Posted by djk View Post
Note:

The power you enter into BassBox v6.0 does not take into consideration the boost applied by the filter, but the excursion plot does. This means that you do not have a problem with x-max unless the program shows more than 1.5x what the driver is rated at, and that the amplifier must be able to provide 6dB (on peaks) above what you enter in the program...

...If you buy as a dealer, Martinsoundpro.com will sell you this driver for less than $100.
So, though the drivers cost less than $200 for one PPSL enclosure, one must have an amp capable of supplying 1800W? If this is so, is a PPSL not far from a direct rad (vented) with less distortion? Seeing as it still requires huge power?

Also, what is the step-down tuning + EQ you speak of in another forum?
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Old 8th February 2011, 07:21 AM   #112
jwmbro is offline jwmbro  United States
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Quote:
Originally Posted by epa View Post
here you go
couldnt scan one track,il try that later.
imo go with 30 hz since 32 hz is the lowest (repeaded) sound u want to reproduce.
you can get that with 2 per side at the cost of some spl
Click the image to open in full size.
Hi, interesting analysis. What program did you use to analyze this? Do you have to pic out the time at which to analyse the song yourself, or does it search for peaks automatically? I have a few songs for which I'd be curious how deep they go also.
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Old 8th February 2011, 08:12 AM   #113
soho54 is offline soho54  United States
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It's Cool Edit, um... version Pro 2 maybe...

It was bought out by Adobe, re-skinned, and is sold as Audition 3 now. I'm not fond of the new version. I have it, but I still use CE over it. Code and feature bloat.
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Old 8th February 2011, 01:50 PM   #114
epa is online now epa  Netherlands
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yup cool edit 2and update 2.1(you have to fidle a bit with the settings (fft) to get the low response )
in this case it was to see if it was necessary to model the box down to 30 hz.
you move the cursor over the loaded song ,and you'll see the graf move .

Last edited by epa; 8th February 2011 at 02:00 PM.
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Old 8th February 2011, 02:10 PM   #115
epa is online now epa  Netherlands
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justin
ive been moddeling about every driver i could find.
i really need to know ,wat your goals are.(30 hz@ 140 db i know)
i mean
how much money are you willing to spend on your subs,
how much amp power is availeble.
how big is the total pakkage your willing or able to move.
with this info i have something to go on.
no free lunch indeed
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Old 8th February 2011, 11:40 PM   #116
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Hi epa,

Happy to hear you're still at it. I know I'm a little tough to please/picky.

I'd like to spend less than $300 per driver
I will be buying an amp sufficient for the designed cabs
I'd like to be able to hit 140dB flat to 30Hz w/4 cabs that are 15 cu. ft./ea. or smaller (best case scenario is to fit all 4 into a short bed pick-up truck w/camper shell - may be far from possible, I know).

For the meantime, I was considering the Furysub build, as I already have those drivers in my Titan 48 enclosures and they supposedly are more efficient in the Furysub. I'm just unsure about the proper confirmed plans, suggested high pass frequency and whether it's xmax limited or power limited.
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Old 9th February 2011, 02:07 PM   #117
epa is online now epa  Netherlands
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what drivers are in the titan 48,maybey we can model something with that.
15 cu. ft how many liters is that?
i think 140 wil be a challange @30 hz with 4.
ill keep digging
edit/ 425 liters
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Old 9th February 2011, 03:05 PM   #118
epa is online now epa  Netherlands
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have you seen this site?
email them to see for howmuch you can get 4x bms 850 v2
i dont see how you can get close with any other driver.
better spend a litle more,then go al the effort and go hmmmz
remember xco1 600 ltr cab got to 140 @30 hz with 4.

Quote:
Originally Posted by CRESCENDO View Post
Hi epa,

all 4 into a short bed pick-up truck w/camper shell -
why not us a trailer behind your truck,
thats how i move my 4 650 ltr horns.

Last edited by epa; 9th February 2011 at 03:11 PM.
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Old 9th February 2011, 03:24 PM   #119
tb46 is offline tb46  United States
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Hi epa,

How about B&C 18SW115? Four large TH's should get you there.

Regards,
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Old 9th February 2011, 05:51 PM   #120
epa is online now epa  Netherlands
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hi oliver
yes that one wil,but its more ~expensive vs the bms.(don't really know bms prices in us)
justin has max $300 to spend per speaker.
you wont't get 140 db @ 30 hz with 4 unless you have ~600 ltr cabs and unless u use an 18 "with a x-max 13mm or more.

you can get there with 6 or 8 cheaper speakers.
fi 8*300 ltr cabs with b&c18ps76 wil give 138 db down to 30.
4 *$350,-??? =$1400,-bms 18n850 v2
8 *$200,- =$1600,-b&c18ps76
4 *$440,- =$1760,-b&c 18 sw 115
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