High SPL midbass - best/easiest way to achieve

Matttcattt · 24th March 2004, 10:11 PM

I want to design a speaker to produce high SPLs (120db+) at midbass frequencies (40-60Hz+). I have read about TLs, Dipoles and Horns, and I would guess, from what I have read, that a horn would be the most efficient, and therefore would produce the greatest SPL.

My question is, simply put, which method, (including monopoles, dipoles, TLs, horns and other suggestions), would produce the highest SPL?

I realise the driver, power consumption and size would come into this decision, but I am simply looking for the cheapest route to take.

Answers appreciated

Matthew

sreten · 24th March 2004, 10:50 PM

A horn would need to be massive to work at 40 to 60hz.

A big pro audio driver reflexed in a big box is the way to go.

But no route is cheap for 120dB at 50Hz.

sreten.

Matttcattt · 25th March 2004, 01:02 AM

Quote:

Originally posted by sreten
A horn would need to be massive to work at 40 to 60hz.

A big pro audio driver reflexed in a big box is the way to go.

But no route is cheap for 120dB at 50Hz.

sreten.

what do you class as "massive"? the LABSUBs?

maybe a higher frequency, the SPL is the important thing.

robertwb70 · 25th March 2004, 01:09 AM

IB sub with 4- 15"ers and a couple hundred watts per driver would do that pretty easily

Nappylady · 25th March 2004, 04:41 AM

The old Radio Shack (Not Pioneer) 8" full-range speakers with the whizzers are capable of extension from 45hz to 15khz, and they're efficient. Enough of them in a box could be very loud.

I can't be 100% sure, but I think you can find the same driver here:

http://www.partsexpress.com/pe/pshow...number=300-010

Failing that, there are a couple of PA target drivers in the 5-10" range in there, that aren't really very expensive... I don't have the numbers on hand tho. If you want 'em, I can find 'em.

Matttcattt · 25th March 2004, 07:32 AM

so a monopole would be more efficient than a horn?

macky888 · 25th March 2004, 09:23 AM

Quote:

so a monopole would be more efficient than a horn?

No.

Sreten's advice is what you need to do.

An Fc=40Hz folded horn using a 12" driver could probably be done in 300L if you can live with that.

Other option is direct radiator pro sound high efficiency 18" drivers. Plenty of output over 120db from 40Hz and up in a vented box. JBL 2241 and 2242 are two excellent options for this.

What is your application? PA or home hifi?

phs · 25th March 2004, 10:36 AM

definately horn

have a look at the latest issue of AudioXpress for Bill Fiztmaurice's Tuba 24 article.

24inches cubed, 1 10" woofer (Carvin PS-10 or Eminence Beta-10)

have a look at this:
http://hometown.aol.com/fitzmauricew...age/photo.html

Matttcattt · 25th March 2004, 10:44 AM

Quote:

Originally posted by macky888

No.

Sreten's advice is what you need to do.

An Fc=40Hz folded horn using a 12" driver could probably be done in 300L if you can live with that.

Other option is direct radiator pro sound high efficiency 18" drivers. Plenty of output over 120db from 40Hz and up in a vented box. JBL 2241 and 2242 are two excellent options for this.

What is your application? PA or home hifi?

home lofi/car audio

i just want to be able to play music loud, not for any specific use.

300L isnt that large for a basshorn.

any examples of drivers for a horn? beyond the LAB12.

spd · 25th March 2004, 02:03 PM

You could use the Volt RV4504, this is an 18" unit
and should work OK in 150 L reflex enclosure (-3db at 40Hz)
However, it is expensive. see: www.voltloudspeakers.co.uk

24th March 2004, 10:11 PM	#1
Matttcattt diyAudio Member Join Date: Feb 2003 Location: Bristol	High SPL midbass - best/easiest way to achieve I want to design a speaker to produce high SPLs (120db+) at midbass frequencies (40-60Hz+). I have read about TLs, Dipoles and Horns, and I would guess, from what I have read, that a horn would be the most efficient, and therefore would produce the greatest SPL. My question is, simply put, which method, (including monopoles, dipoles, TLs, horns and other suggestions), would produce the highest SPL? I realise the driver, power consumption and size would come into this decision, but I am simply looking for the cheapest route to take. Answers appreciated Matthew __________________ If it aint broke, don't fix it. If it is broke, fix it. If you can't fix it, take it apart and see how it "worked".

25th March 2004, 01:09 AM	#4
robertwb70 diyAudio Member Join Date: Nov 2003 Location: Sanford,FL	IB sub with 4- 15"ers and a couple hundred watts per driver would do that pretty easily __________________ "The appreciation of music is subjective.The reproduction of music isn't."-Bill Dudleston

25th March 2004, 07:32 AM	#6
Matttcattt diyAudio Member Join Date: Feb 2003 Location: Bristol	so a monopole would be more efficient than a horn? __________________ If it aint broke, don't fix it. If it is broke, fix it. If you can't fix it, take it apart and see how it "worked".

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24th March 2004, 10:50 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	A horn would need to be massive to work at 40 to 60hz. A big pro audio driver reflexed in a big box is the way to go. But no route is cheap for 120dB at 50Hz. sreten.

25th March 2004, 04:41 AM	#5
Nappylady diyAudio Member Join Date: Feb 2003 Location: Salt Lake City	The old Radio Shack (Not Pioneer) 8" full-range speakers with the whizzers are capable of extension from 45hz to 15khz, and they're efficient. Enough of them in a box could be very loud. I can't be 100% sure, but I think you can find the same driver here: http://www.partsexpress.com/pe/pshow...number=300-010 Failing that, there are a couple of PA target drivers in the 5-10" range in there, that aren't really very expensive... I don't have the numbers on hand tho. If you want 'em, I can find 'em.

25th March 2004, 10:36 AM	#8
phs diyAudio Member Join Date: Nov 2003 Location: Perth, Australia	definately horn have a look at the latest issue of AudioXpress for Bill Fiztmaurice's Tuba 24 article. 24inches cubed, 1 10" woofer (Carvin PS-10 or Eminence Beta-10) have a look at this: http://hometown.aol.com/fitzmauricew...age/photo.html

25th March 2004, 02:03 PM	#10
spd diyAudio Member Join Date: Feb 2004 Location: UK	You could use the Volt RV4504, this is an 18" unit and should work OK in 150 L reflex enclosure (-3db at 40Hz) However, it is expensive. see: www.voltloudspeakers.co.uk

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