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kddp90 View Drop Down
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    Posted: 17 April 2021 at 2:43am
I wanna know something before simulating this in HornResp, won't there be a cancellation of waves at the points I marked here in red, or since both drivers emit waves side-to-side won't those interfere each other? Ermm

Edited by kddp90 - 17 April 2021 at 2:44am
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Tinnitus Rex View Drop Down
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Very probably. what is the rectangle in the lower middle?where is the exit?
"couldn't we just like... use headphones?"
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kddp90 View Drop Down
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Originally posted by Tinnitus Rex Tinnitus Rex wrote:

Very probably. what is the rectangle in the lower middle?where is the exit?
That's the exit... Big smile
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APW View Drop Down
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Points: 1174 		Post Options Post Options   Thanks (0) Thanks(0)   Quote APW Quote  Post ReplyReply Direct Link To This Post Posted: 18 April 2021 at 10:06am

I thought the rectangle IS the exit port, regarding cancelation....

…. Yes and no!!! depends on the path length between the front and rear of the driver as this will determine the frequencies at which the waves emitted from the front meets the rear of the driver either in or out of phase.

When the waveforms are in phase they will add, and when out of phase they will cancel.
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kddp90 View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kddp90 Quote  Post ReplyReply Direct Link To This Post Posted: 19 April 2021 at 12:56am
Originally posted by APW APW wrote:

I thought the rectangle IS the exit port, regarding cancelation....

Do you remember the exit of Shahinian ContraBombarde?

Originally posted by APW APW wrote:

…. Yes and no!!! depends on the path length between the front and rear of the driver as this will determine the frequencies at which the waves emitted from the front meets the rear of the driver either in or out of phase.

When the waveforms are in phase they will add, and when out of phase they will cancel.

True, depends on phase, have to model it, I don't remember its source now, otherwise it should've been a lot easier...
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Elliot Thompson View Drop Down
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No problems. Very old design. Your biggest issue would be having it entering through single entry doors.

Best Regards,  
Elliot Thompson
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kddp90 View Drop Down
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Originally posted by Elliot Thompson Elliot Thompson wrote:

No problems. Very old design. Your biggest issue would be having it entering through single entry doors.

Best Regards,  
That big...??? LOL
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Elliot Thompson View Drop Down
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Points: 5175 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 20 April 2021 at 7:41am
The benefit of large horns is fewer harmonics dominating the overall sound. Small horns are prone to excessive harmonics which is why, many do not like the sound of horns. On the flip side, smaller horns sound louder to many due to a high amount of harmonics. One can look at it as distortion. The more distortion added, the louder the sound perceives to the average individual. 

With the exception of no sealed enclosure, that design is a very large Cerwin Vega L 36 (There were companies that made a double version to it). With the loudspeaker not being restricted by the small sealed enclosure, the loudspeaker has the capability of producing lower notes and using a partial part of the horn's pathway to amplify those lower notes.

Just remember simulators cannot estimate harmonics. That is something you will need to measure yourself once you design the box.

Best Regards,
 
Elliot Thompson
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kddp90 View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kddp90 Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2021 at 1:40am
Originally posted by Elliot Thompson Elliot Thompson wrote:

The benefit of large horns is fewer harmonics dominating the overall sound. Small horns are prone to excessive harmonics which is why, many do not like the sound of horns. On the flip side, smaller horns sound louder to many due to a high amount of harmonics. One can look at it as distortion. The more distortion added, the louder the sound perceives to the average individual. 

With the exception of no sealed enclosure, that design is a very large Cerwin Vega L 36 (There were companies that made a double version to it). With the loudspeaker not being restricted by the small sealed enclosure, the loudspeaker has the capability of producing lower notes and using a partial part of the horn's pathway to amplify those lower notes.

Just remember simulators cannot estimate harmonics. That is something you will need to measure yourself once you design the box.

Best Regards,
 
Thanks for this advice, but if simulators can't how to estimate harmonics then and would you believe all kinds of horn-loaded enclosures add some color to the original bass (cos I usually don't prefer any color)...? Shocked
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