Best pa subwoofer. (Technically) - diyAudio
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Old 6th August 2013, 03:50 PM   #1
H Burch is offline H Burch  United Kingdom
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Default Best pa subwoofer. (Technically)

I want some opinions, on a specific subject mind not just on anything. Pa subwoofers come in many shapes and sizes costing Anything from 50 to thousands. And have different frequemcy Responses and spl etc. I'm going to build some subs for a small pa (sound teinforcement system) I'm making for myself and am not sure what's best. I have build a 12 inch scoop And by jingo its insane In my living room! But then so is my bass guitar
Amp and my 5.1 PC surround sound sub.
So say I'm making 8 Inch mains and want 12 inch subs, storage is
An issue. And this isn't going in tour or anything,
Mayb house parties if that. I know a 12 inch sounds insane in a scoop or a car
But one is way to big and one is in a car so what is the best design for me? I know won't get as low as bigger subs but that's ok for me, is a folded horn going to be better or just a big ported box, I can build easily so no worries there.

Thanks

Hugh
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Old 6th August 2013, 04:00 PM   #2
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Budget?
Power available?

I'd be willing to bet that the "scoop" enclosure will kick you in the chest quite well, but will have no output at, say, 40Hz.

Small size, efficiency, LF extension - pick any two.

Chris

PS - definitions of "insane" will vary.
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Old 6th August 2013, 05:07 PM   #3
H Burch is offline H Burch  United Kingdom
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Still in planning stages so Budget and power All depends on sub. Just to clarify this isn't for pro use as such, just for me. So I literally want to know what design could realistically go lowest, sound best, make best use of any power available. Just want an idea of what design is most efficient in the most respects.
Insane in terms of small one bed flat with 3 foot tall sub which can't use because vibrates
To much and is slightly unnecessaey! so in my endless wisdom I decided to build an entire system to not use either!

But for arguments sake lets say 40 for driver and 200wpc power
Amp, see where we go from there.
Thinking about 2 subs and two 2 way cabs above as a start and see where end up.
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Old 6th August 2013, 07:52 PM   #4
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Here's a 12" PA sub for $55........!

MCM Custom Audio 12'' PA / DJ Speaker Subwoofer 600W | 555-10317 (55510317) | MCM Custom Audio
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Old 6th August 2013, 08:05 PM   #5
tinitus is offline tinitus  Europe
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http://www.mivoc.com/downloads/de/mi...nblatt_WEB.pdf
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Old 6th August 2013, 09:43 PM   #6
H Burch is offline H Burch  United Kingdom
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Sorry just to clarify I want sub cab ideas, not the actual driver
Or the whole thing. But that is very cheap sub!
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Old 7th August 2013, 08:15 AM   #7
H Burch is offline H Burch  United Kingdom
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Lets say I got two of these

Monacor SP-300P 12" Loudspeaker Driver from Monacor 34.66
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Old 7th August 2013, 09:27 AM   #8
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by H Burch View Post
Lets say ....
lets say .... for anything other than a sub

I'm afraid you will be in trouble because you don't like to reveal you know nothing about speakers
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Old 7th August 2013, 09:30 AM   #9
H Burch is offline H Burch  United Kingdom
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How fantastically concise of you, would you care to elaborate as to why not.
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Old 7th August 2013, 09:36 AM   #10
tinitus is offline tinitus  Europe
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not enough Xmax
thats how much its able to move
and still keeping the voice coil inside the magnet gap
also called linear Xmax
in this case it appears to be +/-2.5mm
which is the same as 5mm P-P(peak to peak)

literally it means the woofer can move 2.5mm in and 2.5mm out

if it moves more it will result loss of cone control, and distortion
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