Mounting from Behind!

**atilsley** · June 23rd, 2010, 07:14 PM

Have the new GPA 604's in a Stonehenge box.

Wondering if the drivers should be front mounted, or mounted inside....?

Any negative sonics for internal mounting? (The front baffle is 19mm thick.....3/4 inch.)

I like the look of the Hiraga cabinet....which uses rear mounting...but has that nice flange.

Andrew.

**jnorv** · June 23rd, 2010, 11:15 PM

I think it only matters if the thickness of the baffle is about the same size as the propagated wavelength.

Jim n

**atilsley** · June 23rd, 2010, 11:18 PM

Thanks Jim

The baffle is 3/4 inch thick. How do I assess the propagated wavelength?

Andrew

**Panomaniac** · June 24th, 2010, 08:26 AM

It would be - um..... 3/4" inch.

Now for some useful info: That equals about 18KHz. Your woofer probably isn't playing that high.

**jnorv** · June 24th, 2010, 09:38 AM

Wave length is equal to the speed of sound divided by the frequency. The speed of sound, in air, at room temperature, is about 1140 feet/sec or 13680 inch/sec.

**Steve Mac** · June 24th, 2010, 10:12 AM

I thought this topic was going to be a lot racier...

**Altec Best** · June 24th, 2010, 02:13 PM

Originally Posted by jnorv

Wave length is equal to the speed of sound divided by the frequency. The speed of sound, in air, at room temperature, is about 1140 feet/sec or 13680 inch/sec.

Or about 735 M.P.H.