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Yet Another HORNRESP Question.... [message #16292]

Fri, 02 April 2004 08:39

wunhuanglo
Messages: 912
Registered: May 2009

Illuminati (2nd Degree)

VRC - is that net (volume minus driver displacement) or gross? In other words does the program assume a rule-of-thimb driver displacement volume based on Sd?

Thanks

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Re: Yet Another HORNRESP Question.... [message #16293 is a reply to message #16292]

Fri, 02 April 2004 08:55

Wayne Parham
Messages: 18723
Registered: January 2001

Illuminati (33rd Degree)

That's net. You must enter the actual throat chamber volume. This is usually the volume between the cone and the mounting plate for cone-driven horns. Also include the volume made from the cross-section area of the mounting plate and its thickness, although most times this is small enough it doesn't matter much.

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Re: Subwoofer Horn [message #16295 is a reply to message #16293]

Fri, 02 April 2004 09:49

Mike.e
Messages: 471
Registered: May 2009

Illuminati (1st Degree)

isnt Vrc the volume of the REAR chamber not the front wayne?

but the Vtc, of the front chamber ,thats what you described correctly
?

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Re: Subwoofer Horn [message #16296 is a reply to message #16295]

Fri, 02 April 2004 10:12

Wayne Parham
Messages: 18723
Registered: January 2001

Illuminati (33rd Degree)

Of course, you're right Mike. Jeez, I don't know how I misread that. But the volume entered should still be NET actual volume, and the displacement from stuff inside the chamber (like the driver itself) should be removed.

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