AndrewT said:
so 4 require 4x the size? I would have hoped that 4 would just increase the displacement in the same size box.
a stage in front of my screen can be 120"x24"x14" Thats a nice big box actually.
I already own the drivers so there is no extra cost in that and I have tons of wood so my only cost is building the more complex box.
doug20 said:
Tuning to around Fs creates a fairly under-damped alignment due to its high Qes, but stuffing will flatten it same as with a TL and it's 'only' ~624 L net, though at a ~3 dB lower efficiency than the much larger, lower tuned one.
Anyway, now you have several alignments to play with the TH Wizard to potentially find an acceptable trade-off between BW/size/peak SPL.
GM
Attachments
hi to all...
yes sir it did sound very impressive, for the fact that it was not SIM'd.
why not SIM'd?...too exited and intrigue...and got only 1 week spare to build quickly.
Anyway, if it did not go well...will just charge it to experience...hehehe.
But, its just amazing...thanks to the stepped horn guy, forgot his name sorry sir...
thank you to this forum, collaborating in this wonderful project.
please take note that my th is not Sim'd and falter in some ways.
here we go to LISTENING comparison...(HP dv9408 fail again...sorry no smaart)
WSX vs THproject: using cd samples only. circuit: parallel box with mechanical time alignment.
@100hz---WSX approx. 3bd louder.
@80hz----Same as above
@60hz----now its getting fun...same space and time...its a rumble!
@40hz----TH winning
@20hz----just flapping cones...hehehe
this was done at 1 wavelength per box config...4box per config.
it was in 2007, test was done on location before the gig start.
i know i have those pics somewhere in my drives...will just post it when found...
2009 now we are still modeling this, whenever we got time.
i believe that this TappedHorn box configuration will be great.
kudos to all
jojo
Anyone who has never made a mistake has never tried anything new.
yes sir it did sound very impressive, for the fact that it was not SIM'd.
why not SIM'd?...too exited and intrigue...and got only 1 week spare to build quickly.
Anyway, if it did not go well...will just charge it to experience...hehehe.
But, its just amazing...thanks to the stepped horn guy, forgot his name sorry sir...
thank you to this forum, collaborating in this wonderful project.
please take note that my th is not Sim'd and falter in some ways.
here we go to LISTENING comparison...(HP dv9408 fail again...sorry no smaart)
WSX vs THproject: using cd samples only. circuit: parallel box with mechanical time alignment.
@100hz---WSX approx. 3bd louder.
@80hz----Same as above
@60hz----now its getting fun...same space and time...its a rumble!
@40hz----TH winning
@20hz----just flapping cones...hehehe
this was done at 1 wavelength per box config...4box per config.
it was in 2007, test was done on location before the gig start.
i know i have those pics somewhere in my drives...will just post it when found...
2009 now we are still modeling this, whenever we got time.
i believe that this TappedHorn box configuration will be great.
kudos to all
jojo
Anyone who has never made a mistake has never tried anything new.
Hello All,
I'm doing some research in Tapped Horn project because I'm intended to build a TH subwoofer in the near future.
I was playing for the first time with Hornresp and changing the chamber sizes and length, I got the following:
It doesn't seems to be a TH, but the frequency response up to 150 is very interesting. Am I doing something wrong?
thanks
Highef
I'm doing some research in Tapped Horn project because I'm intended to build a TH subwoofer in the near future.
I was playing for the first time with Hornresp and changing the chamber sizes and length, I got the following:
It doesn't seems to be a TH, but the frequency response up to 150 is very interesting. Am I doing something wrong?
thanks
Highef
It's a reverse tapered tapped pipe (T-TQWT) which is the inverse of a TH, so tend to have a wider ~flat BW for a given bulk at the expense of acoustic efficiency, dynamic headroom. As such, they generally shouldn't be tuned lower than a T/S max flat vented alignment or ~26.4 Hz with this driver unless corner loaded and/or it has an incredibly large Xmax/power handling to keep it from bottoming out down low at higher SPLs as 'fb' warns.
To get any real output to 20 Hz will require corner loading a much larger TH. At a glance you're looking at 300+ L.
GM
What can be done with this driver?
Model NAR102
Power RMS: 180W RMS
Power max: 360W máx
Diam: 10"
Height: 4Kg
Fs (Hz) = 24,99
Qes = 0,508
Qms = 4,025
Qts = 0,451
Vas (L) = 99,5
Xmax = 7,5mm
no (%) = 0,296
Sens (1W/m) = 86,73
Sd (m2) = 34,636
Le = 3,2mH
Re = 3,3
BL (T.M) = 8,42
ohm = 4ohm
Thanks
Highef
Model NAR102
Power RMS: 180W RMS
Power max: 360W máx
Diam: 10"
Height: 4Kg
Fs (Hz) = 24,99
Qes = 0,508
Qms = 4,025
Qts = 0,451
Vas (L) = 99,5
Xmax = 7,5mm
no (%) = 0,296
Sens (1W/m) = 86,73
Sd (m2) = 34,636
Le = 3,2mH
Re = 3,3
BL (T.M) = 8,42
ohm = 4ohm
Thanks
Highef
From Post #1
We also see in that patent, two linear arrays of successively larger holes.
In that respect, these stagger tuned transmission lines appear to be not
only tapped horn loaded, but also Karlson loaded.
You might find my own ideas along those same lines to be of interest???
Sized for my Sigma 18. Warning: This plan hasn't been built, nor simmed,
nor tested in any way. ...Yet...
We also see in that patent, two linear arrays of successively larger holes.
In that respect, these stagger tuned transmission lines appear to be not
only tapped horn loaded, but also Karlson loaded.
You might find my own ideas along those same lines to be of interest???
Sized for my Sigma 18. Warning: This plan hasn't been built, nor simmed,
nor tested in any way. ...Yet...
