is it this possible, with your help?

Toast_Master · 23rd January 2008, 04:16 AM

Hey,

I want to make a high spl speaker,

My limits, $100 AU a bass driver, so one driver per speaker, disregard anything else as im only interest in the bass response

80 litre cabinets and an amplifier that gives 120 watts rms per channel

and I want -3db at around 45hz and want the spl to be 115 clean and to be able to be in a simple 2 way crossed over to a piezo

lol is this possible? within my limits? could you direct me to driver capable? if it is?

Thanks Cya

MaVo · 23rd January 2008, 09:38 AM

procedure to find good driver:

1) find drivers within your price limit via google / online stores.
2) model those drivers in a loudspeaker sim program, to see how they behave.
3) check, if the xmax and power handling are high enough for your desired spl.

this process will help you find the correct driver for your application.

i would try eminence for cost effective speakers.

Andy G · 23rd January 2008, 09:53 AM

Unfortunately, I don't think you will get Eminence under $100 over here.

The only drivers I know off that have decent spl and are cheap are that Etone I linked in the other thread, and maybe a couple of the WES "DaiChi" PA drivers.
I don't have retail prices on the WES stuff, but here is the page, without prices
http://www.wagner.net.au/catalogue/i...6_Speakers.pdf

their home page is http://www.wescomponents.com/ you would have to email them through the 'contact us' link to get prices.

you may also want to browse Cannon Online http://www.cannononline.com.au/catalogue/c6/c10
they may have something on special

Sorry I can't help more, but most other high spl drivers are way more than your limit.

sreten · 23rd January 2008, 12:15 PM

Hi,

Your requirements seem to indicate a speakers of around 95dB/W.

80L is good size cabinet for a vented 12" with decent bass response.

Forgetting about BSC and the 6dB loss it entails, (mild bass boost
will be needed), it does seem reasonable, though IMO a piezo is
not a good idea if you can find a cost effective tweeter e.g. :
http://www.partsexpress.com/pe/showd...number=280-050

The bass end levels depend on driver distortion / excursion capability
and port tuning, to prevent overload you will need a subsonic filter.

A typical 95dB 12" for PA might have Fs = 45Hz, Vas = 3.5 cuft / 100L
and Qts = 0.4. Models well in an 80L box to give -3dB around 50Hz.

/sreten.

Andy G · 23rd January 2008, 08:41 PM

Trouble is that TM will have to stick to stuff available over here.

Any freight costs from US will immediately push the cost up way out of budget.

It is an unfortunate limitation, but one we have to live with.

The piezos really are the best option down here.

and TM, do try to avoid buying piezos that say somthing like "similar to KSN1142" .

Toast_Master · 24th January 2008, 02:34 AM

haha I do, Ive read the info and from what ive read only cts or motorolla is good,

peter_m · 24th January 2008, 03:54 AM

Look into the Peerless 830668. It's been used as a sub for the Pluto speaker by Sigfried Linkwitz. I am about to start building one for my self and it is just about the least expensive sub out there. I'm sure you can find a local Peerless distributor.

http://www.madisound.com/pdf/peerless/830668.pdf

Peter

Andy G · 24th January 2008, 06:52 AM

WES have the Peerless 830866 forgot about the SLS

23rd January 2008, 04:16 AM	#1
Toast_Master diyAudio Member Join Date: Apr 2006 Location: Tasmania, Launceston	is it this possible, with your help? Hey, I want to make a high spl speaker, My limits, $100 AU a bass driver, so one driver per speaker, disregard anything else as im only interest in the bass response 80 litre cabinets and an amplifier that gives 120 watts rms per channel and I want -3db at around 45hz and want the spl to be 115 clean and to be able to be in a simple 2 way crossed over to a piezo lol is this possible? within my limits? could you direct me to driver capable? if it is? Thanks Cya

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23rd January 2008, 09:38 AM	#2
MaVo diyAudio Member Join Date: Jan 2006 Location: Herne	procedure to find good driver: 1) find drivers within your price limit via google / online stores. 2) model those drivers in a loudspeaker sim program, to see how they behave. 3) check, if the xmax and power handling are high enough for your desired spl. this process will help you find the correct driver for your application. i would try eminence for cost effective speakers.

23rd January 2008, 09:53 AM	#3
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	Unfortunately, I don't think you will get Eminence under $100 over here. The only drivers I know off that have decent spl and are cheap are that Etone I linked in the other thread, and maybe a couple of the WES "DaiChi" PA drivers. I don't have retail prices on the WES stuff, but here is the page, without prices http://www.wagner.net.au/catalogue/i...6_Speakers.pdf their home page is http://www.wescomponents.com/ you would have to email them through the 'contact us' link to get prices. you may also want to browse Cannon Online http://www.cannononline.com.au/catalogue/c6/c10 they may have something on special Sorry I can't help more, but most other high spl drivers are way more than your limit.

23rd January 2008, 12:15 PM	#4
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, Your requirements seem to indicate a speakers of around 95dB/W. 80L is good size cabinet for a vented 12" with decent bass response. Forgetting about BSC and the 6dB loss it entails, (mild bass boost will be needed), it does seem reasonable, though IMO a piezo is not a good idea if you can find a cost effective tweeter e.g. : http://www.partsexpress.com/pe/showd...number=280-050 The bass end levels depend on driver distortion / excursion capability and port tuning, to prevent overload you will need a subsonic filter. A typical 95dB 12" for PA might have Fs = 45Hz, Vas = 3.5 cuft / 100L and Qts = 0.4. Models well in an 80L box to give -3dB around 50Hz. /sreten.

23rd January 2008, 08:41 PM	#5
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	Trouble is that TM will have to stick to stuff available over here. Any freight costs from US will immediately push the cost up way out of budget. It is an unfortunate limitation, but one we have to live with. The piezos really are the best option down here. and TM, do try to avoid buying piezos that say somthing like "similar to KSN1142" .

24th January 2008, 02:34 AM	#6
Toast_Master diyAudio Member Join Date: Apr 2006 Location: Tasmania, Launceston	haha I do, Ive read the info and from what ive read only cts or motorolla is good,

24th January 2008, 03:54 AM	#7
peter_m diyAudio Member Join Date: May 2007	Look into the Peerless 830668. It's been used as a sub for the Pluto speaker by Sigfried Linkwitz. I am about to start building one for my self and it is just about the least expensive sub out there. I'm sure you can find a local Peerless distributor. http://www.madisound.com/pdf/peerless/830668.pdf Peter

24th January 2008, 06:52 AM	#8
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	WES have the Peerless 830866 forgot about the SLS

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