18" in horn for HT
My current sub is a BR and I was wondering if the Monacor SPH-450TC can be used at a lower frequency then in a BR?
This is a good opportunity for me to learn HornResp, I would like to learn to design horns.
Can someone jump-start me in HornResp with this driver?
I have about 600 litre net to spend, maximum outside dimensions are:
Initial dimensions were wrong!
height 2m 38cm
These are correct:
height 2m 45cm - 8.038 ft
width 86cm - 2.822 ft
depth 38cm - 1.247 ft
i don't even know what kind of horn is to be simulated, I'm a novice.
Empf. Trennfreq. (fmax.)
Mittl. Schalldr. (1 W/1 m)
Bewegte Masse (Mms)
Mech. Widerstand (Rms)
Mechanische Güte (Qms)
Elektrische Güte (Qes)
2x3,7 Ω/1x7,4 Ω
2x1,1 mH/1x4,6 mH
Lineare Auslenkung (XMAX)
Eff. Membranfläche (Sd)
Ø 425 mm
Ø 460 mm
Hi ßart West-VL.,
This is a tapped horn from my Hornresp "archive", maybe that'll get you started:
I have slightly different parameters. Where did you get your parameters?
I'm lost in the segment numbers, don't really get the feel or visualisation of them. :(
Where can I find a guick start guide for HornResp?
I don't know if there is a tutorial that addresses the new Wizards, but these two are good:
Simple Tapped Horn Tutorial using Hornresp
Hornresp for Dum... hmm... Everyone ;) - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com
I think my T/S parameters were partially from the manufacturers data sheet, and partially recalculated by Hornresp.
also the help file of hr .
ik volg je bart:D
Thanks Oliver and epa, I'll read read!
Hey epa, I was wondering when you would chime in, lol :D
You are calling this: "18" in horn for HT". I went on the assumption, that a front loaded horn would just be way too big ("...lower frequency...HT...), and that a tapped horn would be about the maximum size/output compromise. While learing Hornresp you may also want to try the other 1/4 wave resonators and transmission lines that have been popularized on this forum by bjorno, the tapped versions (QWP and T-TQWT), as well as the offset driver enclosures (OD-MLTL and OD-TTL). I'm sure you'll find other names and examples using "search". :-) They will get you lower in a reduced volume with improved group delay.
FYI, a driver’s cab loading BW is defined by Flm = Fs*Qts/2 and Fhm = 2*Fs/Qts, though for Prof. Leach’s horn design routine, use Qes and of course it’s best to use measured specs.
With the understanding that the further below the driver’s upper mass corner [Fhm] the desired gain BW extends the less peak power handling is available; this driver’s low Fs, Qts means a very wide usable horn loading BW, so with its fairly high power handling capability, horn loading to below Fs is viable, though its high Vas means a relatively large cab.
What does BW stand for?
Flm= 20*0.25/2= 2.5
I tried to measure T&S parameters but ATB-PC Pro doesn't measure below 12hz, so it couldn't determine the lower impedance peak or something like that.
Even if it did work suddenly, then it would be even worse with the added mass.
I gave REW a go but didn't figure out enough to use it properly... :(
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