The bass drivers I will use will be C15-400B. PDF
Searching for a horn, I came across with CP 800TI from Beyma which has low 2nd and 3rd order harmonics for a compression driver. PDF
But it has the SPL value to high (for 1W). A L-pad will help but with some disadvantages.
The horn used in Beymas test is TD590. PDF
The polar response is not so great.
Next step.
As you can see from the graphs at 5W the C15 will have over 100dB at 50Hz.
It will be a problem matching this with a good mid driver.
The possibility of 15" + 2" driver will work only if I find one suitable for the job.
The test enclosure is 110 L, FB 45Hz, 20% Damping (40kg/m3). Full space simulation (anechoic).
Searching for a horn, I came across with CP 800TI from Beyma which has low 2nd and 3rd order harmonics for a compression driver. PDF
But it has the SPL value to high (for 1W). A L-pad will help but with some disadvantages.
The horn used in Beymas test is TD590. PDF
The polar response is not so great.
Next step.
As you can see from the graphs at 5W the C15 will have over 100dB at 50Hz.
It will be a problem matching this with a good mid driver.
The possibility of 15" + 2" driver will work only if I find one suitable for the job.
The test enclosure is 110 L, FB 45Hz, 20% Damping (40kg/m3). Full space simulation (anechoic).
Attachments
Have a look at this page for some 8" and 10" drivers to complement.
http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=579
http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=580
I don't think you'll have to worry about 100dB 1 watt at 50 Hz. Take a look at the graph they post on your linked page. I see 93 - 94 like your graph on the left shows.
http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=579
http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=580
I don't think you'll have to worry about 100dB 1 watt at 50 Hz. Take a look at the graph they post on your linked page. I see 93 - 94 like your graph on the left shows.
Free air or IB?
Yeah, I don't believe it either.
Re-running.
I know that graphs are inaccurate and that`s why I will build a test box to assess it.
Later:
Same result. The box was rectangular due to laziness.
P.S.
Attached graphs from LEAP database.
First one is free air, second inf baffle.
I know that graphs are inaccurate and that`s why I will build a test box to assess it.
Later:
Same result. The box was rectangular due to laziness.
P.S.
Attached graphs from LEAP database.
First one is free air, second inf baffle.
Attachments
Last edited:
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