This is probably one the best response graphs i've seen out of a car audio driver in a tapped horn config
It is $100, 500W rated, and has 12mm xmax at 70% BL (pretty big xmax)
Anyone here who knows Sundown knows that they put out quality products and have accurate T/S parameters
Here's some pics
I put the parameters on to Bassbox Pro to get some assurance on parameters.
Thinking about doing this as a HT sub
It is $100, 500W rated, and has 12mm xmax at 70% BL (pretty big xmax)
Anyone here who knows Sundown knows that they put out quality products and have accurate T/S parameters
Here's some pics
I put the parameters on to Bassbox Pro to get some assurance on parameters.
Thinking about doing this as a HT sub
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Looks like the specified voice coil inductance is lower than what is in your model. Where did you get the 1.93mH value? Looking at the impedance graph it looks like Le would be some where around 0.525mH when the 10E D2 model has it coils in series.
I got it from a distributer's parameters description, Bassbox asks for impedance at 10kHz-20kHz range, which that frequency range isnt on the graph.
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Joined 2014
If you mean "Can this tapped horn subwoofer", idk how you would modify the driver itself 😕, yes that is the intention, relatively small size, high power, large excursion, response down to 30hz, and would work best in 0.5pi and 1.0pi arrangements
The rated power is 500w and you can feed around that much and be around or within xmax 🙂
I dunno - the predicted out of band noise looks a bit too high and too close to the passband for my liking. It will be difficult to address that with a simple LP filter. Quite a bit of DSP will likely be required. Compare that response to what you could get from a driver like the Pioneer TS-W1200PRO, for example, which in a TH shows a pretty smooth response, with only two minor peaks in the out of band noise.
That ought to tell you something about how high it is at the 1 kHz point that HR and most other programs use ........
Re = 3.8 ohms, ~30 ohms/1 kHz per graph = ((30^2-3.8^2)^0.5/(2*pi*1000))*1000 = ~4.7362 mH with coils in series or ~1.09 ohms in parallel.
Just 'eyeballing' a chart extension guesstimate puts it at 120-130 ohms/10 kHz, so your 1.93 mH seems reasonable to me.
GM
FWIW, DSL doesn't have a problem with it as several of their THs sim basically the same or worse depending on the driver's specs, though of course using drivers with specs that have a more benign horn loaded HF response is preferred if it meets the needs of the app. Unfortunately, this often isn't the case.
GM
Ha! I goofed on the voice coil math. GM has it correct. Disregard my previous post on the voice coil inductance.
Yeah, but do they actually build those THs totally in line with the Hornresp sim? 🙂
if you build according to the same, the out-of-band noise may not be as bad as pictured, but it may be bad enough to require some serious EQ to address, particularly as it's so high and so close to the passband. IMO best to avoid this extra hassle in the first place by choosing another alignment or driver.
You cannot run a tapped horn without DSP to full power due to the excursion below its bandpass (takes off as with almost all designs), thus I find it pointless to point out that it needs a 8th order LP @ 80 Hz, That's easy pickings since ideally you would have a Inuke dsp 3000, DcX2496, minidsp etc... to handle limiting, EQ, and filters. I have a similar design (pipe/horn)that in singles it needs a 4th order or higher at 32 Hz in order to keep displacement at full power in check, 31 wouldn't work. If you wanted to do the same in components you're best bet would be 2nd order at 35 to 40 and EQing back in the 35.
The lowpass can be simulated in Hornresponse which I highly recommend to get an idea of what filter you want on the high and low points.
The lowpass can be simulated in Hornresponse which I highly recommend to get an idea of what filter you want on the high and low points.
It doesnt need an 8th order. a 4th order and 3 bands of peq will do fine. I prefer to stay away from filters over 4th order as they add too much group delay.
Sine is that you (BFM forum)?
Also, I had no idea about the group delay issue brought up with those steep filters until messing around with hornresponse's filter wizard, good catch. I'll try that in the future.
Side note, I am "missilecrisis" on BFM forum, nice to see you're active here as well.
Also, I had no idea about the group delay issue brought up with those steep filters until messing around with hornresponse's filter wizard, good catch. I'll try that in the future.
Side note, I am "missilecrisis" on BFM forum, nice to see you're active here as well.
bahaha. hows it going will.
yep... higher order, more group delay/phase shift.
Its particularly an issue down low. the lower order you keep the hipass, the less the ugly group delay spike at the low corner will be, although this will reduce the spl above the filter point (causing a "drooping" low end appearance).
Just play around with hornresp and you'll catch on in a couple weeks.
yep... higher order, more group delay/phase shift.
Its particularly an issue down low. the lower order you keep the hipass, the less the ugly group delay spike at the low corner will be, although this will reduce the spl above the filter point (causing a "drooping" low end appearance).
Just play around with hornresp and you'll catch on in a couple weeks.
Any luck with the project I’m looking to make a 12” or 15” sundown audio E v4 or SA v2 in a tappped horn for outside movie nights and for some parties I probably would go for the SA v2 12 or 15 but I don’t have any tapped horn plans and don’t know how to get a plan im not grate with computers can any one please help thank you
simple potential idea:
Fold up a TL shape using the drivers ‘Sd’ (510 cm2 or 850) as the crossectional area throughout. If using the 48” (120 cm) dimension on a sheet of plywood the 1/4 wavelength Fb will be about 36 hz.
the second resonance will be at about 108 hz and then a deep cancelation notch thereafter Will end the bandwidth and make crossover easy?
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That thing is huge would anyone have a more compact folded horn or tapped horn plans I think that one is a T line and it’s way too big to be moving around thank you for your help but that has to go inside of a car to transport it from place to place
