Posted by Bob Coley [ 216.105.208.2 ] on January 13, 2008 at 19:47:13:
In Reply to: Re: Impedance rise in horns posted by Wayne Parham on January 13, 2008 at 15:58:03:
Hello and thanks for the great reply. I learned a lot from you Wayne.
Here's where I'm at with design.
I building this enclosure arounds a TC Sounds TC3000.
QMS 6.1
Res 4.63
BL 27.1
Mms (grams) 373.00
Cms uN/M 136.00
Sd (m^2) .0820
Vas 127.60
Fs 22.35
Qes .330
Qts .313
nO 4.16E-03
SPL (dB) 88.19
This driver has quad 1.4 ohm voice coils that I plan on wiring for a .35 ohm load. That's why impedance rise is so critical. I want to a play one tone and one tone only (51 hz). I know that if I use 2 1000 watt RMS amps and wire it that way I will likely cause more than just hearing damage if I miss that target frequency. Anyway, below there should be a basic diagram of what I'm looking at building. All the dimensions are outside dimensions. The depth will be 17". I'm planning on using 3/4" MDF, but would open to doubling the outside wall thickness if needed.
Some of your thought would be great.
Thanks again and have a great day.
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