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212 Mid/Top Plan - Advice Please!

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Dougies Music View Drop Down
Young Croc
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    Posted: 04 April 2009 at 5:02pm
Hi there

Am trying to figure out some plans for the following drivers and horn.

Want the cabs to be as compact as possible, wondered whether A simple reflex cab would be best, or a horn loaded cab. Or perhaps a V-shaped cabinet for better dispersion?

2 x 12" Sound King FB1203H : THe only specs available for them unfortunately are this:

FS: 45Hz
Qts: 0.39
Vas: 117L

Nominal Diameter          12 inch
Sensitivity(1m/1w)          96dB
Nominal Impedance       8Ω
Voice Coil ID                  3 inch
Power Handing              250W
Fre.Range                     45Hz-5kHz
Net Weight                     4.5kg


Selenium D210Ti 

SPECI FI CATIONS 

Nomi nal i mpedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 

Mi ni mum i mpedance @ 2, 900 Hz . . . . . . . . . . . . . . . . . . . . . 7. 3 

Power handl i ng 

Sensi t i vi t y 

Fr equency r esponse @ - 06 dB . . . . . . . . . . . . . . 800 t o 20, 000 Hz 

Ω 

Ω 

Ω 

Musical Program ( w/ xover 1, 500 Hz 12 dB / oct ) . . . 120 W 

Musical Program ( w/ xover 2, 000 Hz 12 dB / oct ) . . . 160 W 

On horn, 2.83V@1m, on axi s . . . . . . . . . . . . . . . . . . 107 dB SPL 

Throat diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 (1) mm (in) 

Diaphragm material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Titanium 

Voicecoil diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ( 1.7) mm (in) 

Re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0 

Flux density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 T 

Minimum recommended crossover ( 12 dB / oct ) . . . . . . . 2,000 Hz 




Selenium HL14-25 Horn


Dispersion: 45x45
Material: Polyproplylene
Throat: 1"
Mounting: Screw-on
Dimensions: 6.1" x 6.1" x 10.2"
Cut-off: 600Hz



Any ideas would be great.


Cheers

Dougie




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RiddimKid View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RiddimKid Quote  Post ReplyReply Direct Link To This Post Posted: 05 April 2009 at 6:51am
 
 
 
 
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Mircea Bartic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 05 April 2009 at 8:22am
Hehe, That's my vector V22 plan



the horn is P-audio PH2723 2" horn
general manager & head designer at nexus-acoustics research
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RiddimKid View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RiddimKid Quote  Post ReplyReply Direct Link To This Post Posted: 05 April 2009 at 5:13pm

I like the look of them, wanna get some built.

Whats the best drivers to load them with my friend???
 
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Mircea Bartic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 05 April 2009 at 6:54pm
I used P-audio C12-300MB , P-audio PH2723 & P-audio WN-D72 driver

if you use another driver , larger than WN-D72, be sure to check if it fits, as the width at the back is small
general manager & head designer at nexus-acoustics research
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Dougies Music View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dougies Music Quote  Post ReplyReply Direct Link To This Post Posted: 07 April 2009 at 6:42pm
Ok so on WinISD online, putting in the Qts, Vas and Fs - it says that for two drivers in one enclosure, it requires a cabinet with 209.29 litres!! HUGE!!

BUT, for a closed cabinet it says just 102.34 litres which is more managable.

I'm going to cross it at about 130-150Hz so will a closed cab work ok?

Did a quick sketch..........



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Dougies Music View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dougies Music Quote  Post ReplyReply Direct Link To This Post Posted: 08 April 2009 at 2:26pm
none at all?
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darkmatter View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote darkmatter Quote  Post ReplyReply Direct Link To This Post Posted: 08 April 2009 at 6:42pm
The box volume will depend on your desired low frequency cut off. What frequency do you need to reach?
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Dougies Music View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dougies Music Quote  Post ReplyReply Direct Link To This Post Posted: 08 April 2009 at 10:33pm
its going in a six box system.

Logic System LS215s for the kick. Csubs for the sub.

On WinISD online, it looks like the freq curve levels out at 0dB around 120Hz.

Subs 40-90Hz
Bins 50-150Hz
Tops 150Hz up

That work out ok?
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LunchieTey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LunchieTey Quote  Post ReplyReply Direct Link To This Post Posted: 09 April 2009 at 9:57am
win isd only SUGGESTS a volume-you can change it and see the results. You unfortunately can't check x-max because you don't have all the specs you need. The sealed cab SHOULD be ok(maybe even 80ltrs) Smaller cabs will give a little bump in the 80hz range and help control cone excursion.

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LunchieTey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LunchieTey Quote  Post ReplyReply Direct Link To This Post Posted: 09 April 2009 at 9:58am
Originally posted by Mircea Bartic Mircea Bartic wrote:

Hehe, That's my vector V22 plan



the horn is P-audio PH2723 2" horn


That is a lovely looking cab Clap
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Mircea Bartic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 09 April 2009 at 10:27am
and stupid loud tooWink




that's me i the right in 2006


general manager & head designer at nexus-acoustics research
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