Collaborative Tapped horn project

Ex-Moderator R.I.P.
Joined 2005
thiele small specs

looking at a big PA woofer
it clearly says 22hz ressonance
and graph shows it too, or close

but its listed with 34hz Fs in thiele small specs for box calculation

why is that :confused:
or is 'just' to be conservative and avoid failure ?
meaning it could be calculated using the 22hz ?
 
thiele small specs

looking at a big PA woofer
it clearly says 22hz ressonance
and graph shows it too, or close

but its listed with 34hz Fs in thiele small specs for box calculation

why is that :confused:
or is 'just' to be conservative and avoid failure ?
meaning it could be calculated using the 22hz ?
An inaccurate Fs figure is more likely to make a speaker/cabinet alignment failure prone.
A speaker with a 34 Hz Fs can be put in a box with a 22 Hz Fb or Fc.
By "22hz ressonance" do you mean Fb or FC?
Pictures of what you write about would be helpful.
 
Just a few pages back, bjorno's version. http://www.diyaudio.com/forums/subw...tive-tapped-horn-project-383.html#post3167600

definately not getting into the low 20's with this much stuffing (or leakage)
musically I'm really happy, it sounds good and my mains can't keep up :eek:

I see your design has something in common with mine, car audio driver in a tqwt :)

Based on the 25hz tuning and recommended 25hz/24db filter, you're not going to get low 20's. Nice response for such a short length ttqwt!

Yes it does. I love it! I have no stuffing or highpass filter. It's a beast! I designed it for 1, 000 watts but only putting about 200-250 to from a Yamaha htr running in subwoofer mode from a Sony htr. D@mn thing has cracked multiple walls in the house.
 
Ex-Moderator R.I.P.
Joined 2005
looking at a woofer

http://www.lautsprechershop.de/pdf/mivoc/mivoc_xaw320hc_data.pdf


for mounting woofer, I thought if most of the whole side could be removed to do that, it would also be possible to 'adjust' the last horn path and opening by changing this baffle part :scratch:

anyone tried to make lots of smaller holes close to opening, like the did in the older days to achieve apperiodic system, or slits, slots, or whatever ?
well, anyway, if that baffle part is made detachable it would make experimets possible
 

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double 3 inch

Hi, started playing around with Hornresp a little ago... the wizard is great fun. But I would like to run a sanity check with you guys. I have simulated a TH with two Aurasound NS3-193-8 (mainly because I have a couple of leftovers), and I sort of think the result looks too good to be true. That generally means something is off. Please have a look, feedback is appreciated.

Nominal Diameter . . . . . . . . . . . . . . 3 inches (70 mm)
Nominal Impedance (Z) . . . . . . . . . . 8 Ohms
Sensitivity, 1W/1m (E) . . . . . . . . . . . 80 dB @ 1 kHz
Power Capacity, RMS (Pe) . . . . . . . . 20 W
Power Capacity, Peak . . . . . . . . . . . 80 W
Frequency Range (-10dB) . . . . . . . . Fo - 15 kHz
Minimum Impedance . . . . . . . . . . . . 8 ohms
Voice Coil Diameter . . . . . . . . . . . . . 19.3 mm
Voice Coil Winding Length (h) . . . . . 6.5 mm
Voice Coil Number of Layers (n) . . . . 4
Voice Coil Former Material . . . . . . . . Kapton
Voice Coil Wire Composition . . . . . . CCAW
Magnetic Material . . . . . . . . . . . . . . Neodymium radial
Stray Flux Shielding . . . . . . . . . . . . . Inherent
Magnetic Gap Depth (He) . . . . . . . . 12.7 mm
Cone Material . . . . . . . . . . . . . . . . . Aluminum
Surround Material . . . . . . . . . . . . . . Rubber
Polarity, Outward Motion . . . . . . . . . Positive voltage on (+) tab
Net Weight . . . . . . . . . . . . . . . . . . . . 216 g
Thiele / Small Parameters
Resonant Frequency (Fo) - Fs . . . . . 80 Hertz
Voice Coil DC Resistance - Re . . . . . 7.6 Ohms
Total Q - Qts . . . . . . . . . . . . . . . . . . 0.67
Mechanical Q - Qms . . . . . . . . . . . . 8.0
Electrical Q - Qes . . . . . . . . . . . . . . 0..73
Equivalent Volume of Air - Vas . . . . . 1.25 L
Radiating Piston Area - Sd . . . . . . . . 31 cm
Xmax . . . . . . . . . . . . . . . . . . . . . . . . 10 mm peak to peak
Electrical / Mechanical Parameters
Flux Density x Length - BL . . . . . . . . 4.7 Tesla-meters
Compliance - Cms . . . . . . . . . . . . . . 920 µm/N
Total Mass - Mms . . . . . . . . . . . . . . 4.3 grams
 

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Hi, started playing around with Hornresp a little ago... the wizard is great fun. But I would like to run a sanity check with you guys. I have simulated a TH with two Aurasound NS3-193-8 (mainly because I have a couple of leftovers), and I sort of think the result looks too good to be true. That generally means something is off. Please have a look, feedback is appreciated.

Nominal Diameter . . . . . . . . . . . . . . 3 inches (70 mm)
Nominal Impedance (Z) . . . . . . . . . . 8 Ohms
Sensitivity, 1W/1m (E) . . . . . . . . . . . 80 dB @ 1 kHz
Power Capacity, RMS (Pe) . . . . . . . . 20 W
Power Capacity, Peak . . . . . . . . . . . 80 W
Frequency Range (-10dB) . . . . . . . . Fo - 15 kHz
Minimum Impedance . . . . . . . . . . . . 8 ohms
Voice Coil Diameter . . . . . . . . . . . . . 19.3 mm
Voice Coil Winding Length (h) . . . . . 6.5 mm
Voice Coil Number of Layers (n) . . . . 4
Voice Coil Former Material . . . . . . . . Kapton
Voice Coil Wire Composition . . . . . . CCAW
Magnetic Material . . . . . . . . . . . . . . Neodymium radial
Stray Flux Shielding . . . . . . . . . . . . . Inherent
Magnetic Gap Depth (He) . . . . . . . . 12.7 mm
Cone Material . . . . . . . . . . . . . . . . . Aluminum
Surround Material . . . . . . . . . . . . . . Rubber
Polarity, Outward Motion . . . . . . . . . Positive voltage on (+) tab
Net Weight . . . . . . . . . . . . . . . . . . . . 216 g
Thiele / Small Parameters
Resonant Frequency (Fo) - Fs . . . . . 80 Hertz
Voice Coil DC Resistance - Re . . . . . 7.6 Ohms
Total Q - Qts . . . . . . . . . . . . . . . . . . 0.67
Mechanical Q - Qms . . . . . . . . . . . . 8.0
Electrical Q - Qes . . . . . . . . . . . . . . 0..73
Equivalent Volume of Air - Vas . . . . . 1.25 L
Radiating Piston Area - Sd . . . . . . . . 31 cm
Xmax . . . . . . . . . . . . . . . . . . . . . . . . 10 mm peak to peak
Electrical / Mechanical Parameters
Flux Density x Length - BL . . . . . . . . 4.7 Tesla-meters
Compliance - Cms . . . . . . . . . . . . . . 920 µm/N
Total Mass - Mms . . . . . . . . . . . . . . 4.3 grams
from here it looks ok,only the input voltage should be 2 volts for 4 ohm(8+8/2)for 1w/1m
 
Ex-Moderator R.I.P.
Joined 2005
pulling this very nice 15" out of my bass guitar cab (to try a differnt model with more midrange extention)
fortunately FaitalPro have been clever enough to size all their 15" woofer chassies equally, even when of different designs

so I may have this to try in a sub, either BR, or 6th order BP
6th order seem to end on 100liter netto, so that seems quite ok

but would also like to know how it would work in TH

anyone want to model it for me ?

http://www.faitalpro.com/products/files/15XL1400/8/15XL1400_datasheet_8.pdf