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
or is 'just' to be conservative and avoid failure ?
meaning it could be calculated using the 22hz ?
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
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.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
or is 'just' to be conservative and avoid failure ?
meaning it could be calculated using the 22hz ?
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.
An inaccurate Fs figure is more likely to .....
By "22hz ressonance" do you mean Fb or FC?
Pictures of what you write about would be helpful.
its the new Precision Devices PD.1851
22hz ressonance is clearly the ressonance peak
but they still use 34hz for thiele small Fs
its the new Precision Devices PD.1851
22hz ressonance is clearly the ressonance peak
but they still use 34hz for thiele small Fs
Hi tinitus,
If you place Your 'hand' at the smallish FR or on the impedance graph you will realize that 22Hz is the PD 2150 fs and not for the PD 1851.
b
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
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.
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
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
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
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
Attachments
What you sketched and described Looks exactly like Art Welters Keystone TH Cabinet.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
http://www.diyaudio.com/forums/subw...ing-18-15-12-inch-speakers-4.html#post2537534
Making line drawings can be deceiving, once you add in the actual wood thickness you often will find not as many folds will fit in the space you want.35% longer ? wow, that much
hey, here's a really weird one
maybe I should just fold some paper instead
time for me to cool down
ah, yes...thanks
always do a full size drawing
I expect it would work with smaller woofer, and not too low
always do a full size drawing
Actually, that's a really cool fold. You should work it out into an actual example.
I expect it would work with smaller woofer, and not too low
Attachments
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 . . . . 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
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 . . . . 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
Attachments
from here it looks ok,only the input voltage should be 2 volts for 4 ohm(8+8/2)for 1w/1mHi, 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 . . . . 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
Ah yes you are right! Now the gain seems a little more reasonable, thanks!
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
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
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