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Old 1st December 2011, 09:26 AM   #141
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Join Date: Mar 2010
Location: Salzburg
Default Oliver, that look excellent!

Maybe I could build 2 a side of those - I assuming they are Pmax rather than Xmax limited, so should get pretty loud. Then to top them off I like the look of these coaxial drivers Specification ...

or maybe these, because they can be stacked nicely

Overview

Of course, my subs won't quite keep up, but I have plans (well, aspirations, no plans per se) for the lowest octaves.

Give me a month or so and I'll be on this.

Regards, Ben
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Old 11th December 2011, 01:43 PM   #142
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Join Date: Mar 2010
Location: Salzburg
Default Boxes almost finished, haven't loaded them yet...

and then I saw some speakers on sale at one sixth of the current price of the 3015LF...

would these be worth putting in the cabinets - they'd be some much cheaper if I wanted to build more than the first 6! I could sell the 3015LF speakers fairly easily too.

Please let me know before I cut start mounting the drivers!

Thanks a lot!

Regards, Ben


GT5-12 - JBL

Voice Coil DC Resistance (Revc – ohms)4 Voice Inductance @ 1kHz (Levc – mH)1.26 Driver Radiating Area (Sd – in2/cm2)82.15/530 Motor Force Factor (Bl – Tm)15.2 Compliance Volume (Vas – ft3 / l)1.9/54.2 Vas – ft3 / l Suspension Compliance135.00 Cms – μm/N Moving Mass, Air Load223.0 Mms – g Moving Mass, Diaphragm216.0 Mmd – g Free-Air Resonance29.00 Fs – Hz Mechanical Q6.39 Qms Electrical Q 0.64 Qes Total Q0.58 Qts Magnetic Gap Height (Hag – in/mm)0.315/8 Voice Coil Height (Hvc – in/mm)1.43/36.4 Maximum Excursion (Xmax –in/mm)0.56/14.2
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Old 11th December 2011, 08:04 PM   #143
epa is offline epa  Netherlands
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Location: amsterdam
you have any pics ben,
ive been scrolling over this topic and cant realy find what your bilding
ive heard a few bms driver and they sound real nice.the ones your suggest are the expensive ones.
i know the 4550,4554 and 4555 sound real nice and are relatively cheap.
__________________
one good thing about music ,when it hit you feel no pain.
so hit me with music
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Old 14th December 2011, 04:17 PM   #144
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Join Date: Mar 2010
Location: Salzburg
Default EPA - pics are coming

for now all I can say is this is a set of six simple tapped horns externally measuring 16" by 17" by 60", just a long almost square corss-section straight box, mouth at one end, and the straight baffle is the only internal board. Very probably loaded with my 3015 LF, unless a cheaper alternative is found.

The aim is to give a good 20 Hz when necessary - and to be the only sound equipment provider in my province to do it, both for kicks and to have a unique selling point.

Friends of mine run a drum n bass and dubstep collective with monthly gigs. For the small ones I would like to take one or two of these subwoofers, for big ones the whole sixpack - or maybe more one day. However, to allow for expansion it would be preferable to use a (much) cheaper woofer, as the 265 Euro price is downright painful!

It would be interesting to know the excursion at various frequences and wattages - so as to run the subs higher for gigs where the very low frequencies are less important than a few more dBs.

First outing will be either new year's eve, if I have time - too much other work piling up - and I have to repair some chairs that my wife 'inherited' where the glue is dust! If not, the the next serious gigs will be in the second half of January.

Regards, Ben

P.S. to really answer EPA's question - I would to make use of some kappa 15a drivers, and will, when the first 6 subs are complete, commence building some horn-loaded tops based on the Lascala.

Last edited by salzburgsoundsystem; 14th December 2011 at 04:47 PM.
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Old 14th December 2011, 07:10 PM   #145
Djim is offline Djim  Netherlands
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Join Date: Dec 2009
Location: 'Ollanda
Quote:
Originally Posted by salzburgsoundsystem View Post
Very probably loaded with my 3015 LF, unless a cheaper alternative is found...........However, to allow for expansion it would be preferable to use a (much) cheaper woofer, as the 265 Euro price is downright painful!........
Hi Ben, the Monacor SP-15/500PH seems to be more than just a replacement for the 3015LF and is available in Germany below 200Euro's.
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Old 13th February 2012, 06:32 AM   #146
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Location: Salzburg
Default Thank you!

I have never had bass this low from a system suitable for PA!

Regards, Ben
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Old 13th February 2012, 08:23 AM   #147
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Location: California
What driver/enclosure setup did you end up going with?

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Old 13th February 2012, 08:53 AM   #148
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Join Date: Mar 2010
Location: Salzburg
Default I built

a system based on post 24 by JBELL, I've come to trust the guy almost blindly...

Cut into 4 single driver sections for portability. Pictures to follow shortly.

Regards, Ben
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Old 13th February 2012, 12:22 PM   #149
jbell is offline jbell  United States
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Quote:
Originally Posted by salzburgsoundsystem View Post
a system based on post 24 by JBELL, I've come to trust the guy almost blindly...

Cut into 4 single driver sections for portability. Pictures to follow shortly.

Regards, Ben

never blindly ben.... always with the math to back it up....

but I appreciate the vote of confidence.

Lets see those pics !!
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Old 13th February 2012, 06:43 PM   #150
Djim is offline Djim  Netherlands
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