That is a fairly low tuning point for a 15", everything I can read (on what I think is that driver) says tuning is around 30-32hz which seems more viable.
The last driver with that model that I can use in BASS Box Pro is from 2012 so if you got it new up to around 2016 I'm guessing that it's the same driver.
It indicates the driver parameters are:
Driver Properties
Name: SSD15 (dual 2) (2012)
Type: Standard one-way driver
Company: Fi Car Audio
Comment: SSD series
No. of Drivers = 1
Dual voice coils = parallel
Fs = 29.6 Hz
Qms = 8.73
Vas = 93 liters
Xmax = 20 mm
Sd = 810 sq.cm
Qes = 0.43
Re = 0.7 ohm
Z = 1 ohm
Pe = 1000 watts
That is the thermal limits and even giving room for rise and things, maybe 12-1500 watt burst are possible. Still, even if that holds, 2700 watts will likely toast the driver.
A ran the specs on that driver and at 2700 watts you will have major issues with cone displacement (fried).
At the given Pe rate of 1000 watts, in a box with a Vb of 4.69 cu ft (that is after displacement for port, driver and braces (about .35 cu ft) your cone displacement is as follows:
Okay at 1000 watts
Not acceptable at 2600 watts
Response curve:
Good
Vent velocity with a 6" round (didn't calculate a slot port, don;t know the dimensions but the area of a 6" port is 28.27" sq Inches) vent that is 22.35" long
Acceptable at 1000 watts
Not acceptable at 2600 watts
You will need to rethink this a bit.
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- Thread Starter
- #4
I think you have an older version, the v.3 is as followed for the D2
SPECIFICATIONS
| T/S SPECS | X V.3 15″ D1 | X V.3 15″ D2 |
|---|---|---|
| RE (Ohms) | 1.4 | 3.2 |
| FS (Hz) | 31.418 | 31.423 |
| VAS (L) | 45.907 | 45.924 |
| Qes | 0.486 | 0.561 |
| Qms | 2.562 | 2.801 |
| Qts | 0.409 | 0.468 |
| Le (mH) | ||
| BL (NA) | 15.518 | 21.831 |
| Mms (Grams) | 423.721 | 423.436 |
| Cms (uM/N) | 60.563 | 60.585 |
| Sens (dB @ 1w/1m) | 86.5dB | 85.9dB |
ENCLOSURE SPECIFICATIONS
| X v.3 15 | |
| Sealed Enclosure | N/A |
| Ported Enclosure | 4.25 cu ft |
| Recommended Tuning | 32hz |
| Recommended Port Area | 68 sq in |
| Displacement | 0.22 cu ft |
| Depth | 11.6" |
| Outside Diam. | 15.51" |
| Cutout | 13.83" |
- Thread Starter
- #5
Yes, will use subsonic filter to keep near 27hz
to run it in BB Pro, would like to have the Xmax, Sd, Le and Z values too. The specs you give has the driver with a higher Fs though.
I can tell you what to tune a 4 cu ft box at 26 hz is but that doesn't tell you the whole story. Lets take it to 29hz and this is till subjective. My figure assumes a Vb of 3.25 cu ft after port and driver displacement. In a 4 cubic foot (gross) box tuned to 29 hz you will want a port that has a 28 sq inch opening that is 23.25" in length.
I would advise having someone run WinISD for this though.
I can tell you what to tune a 4 cu ft box at 26 hz is but that doesn't tell you the whole story. Lets take it to 29hz and this is till subjective. My figure assumes a Vb of 3.25 cu ft after port and driver displacement. In a 4 cubic foot (gross) box tuned to 29 hz you will want a port that has a 28 sq inch opening that is 23.25" in length.
I would advise having someone run WinISD for this though.
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- Thread Starter
- #7
Yeah it’s weird, I’m finding a few other forums asking for more info on specs.
- Thread Starter
- #9
Woofersetc, an authorized dealer lists the xmax of 30mm one way. Still weird how the actual brand doesn’t list it.
www.woofersetc.com
Sundown Audio X-15 v3 D2 Pro 15" Dual 2-Ohm 2000W RMS Bass Subwoofer
Sundown Audio X-15 v3 D2 Pro 15" Dual 2-Ohm 2000W RMS Bass Subwoofer
www.woofersetc.com
I'd tune 30hz myself in the 4.25ft3 net recommended, that amount of port (68in2) will need to be right around 40" long. It'll be able to dig deep but without losing too much of that SPL for the occasional smile. Its been awhile since I've seen @West1 on this board... What's up man? What vehicle are you putting this X in? Are you planning to use that FSD for the single X-15? On that power, in that airspace I'd set the SSF around 24hz and let that sub eat. It looks like just the right amount of power for that X and once setup it should be comfy as long as you watch clipping and use your head.
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- Thread Starter
- #12
Hey what’s up bro! Yeah, been a while since I’ve been on.
Yes, going to use the FSD (good memory man!). It’s still kicking strong on the FI ssdV.4 15.
I plan to put it in my 21 Tahoe. Recently, I seen a zv6 for a good price, about 250miles away, I’m considering the drive
.You get the bug and put some beat back in your ride? Last we spoke, you were done w/car audio
I got a KILLER system now, it'll make your ears bleed (literally). Deck power on coax with a kicker comp 12. I'm pretty done with big systems myself but I still mess around designing.
You got plenty of space to work with, so fitting a single X-15 in there should be no problem. I actually modeled your setup and everything looks good in that airspace/tuning on your power with the SSF set at 24hz. If you'd like I can knock out a design for you, just decide what sub you're going to use. That X should do great and the Zv6 should work in the same enclosure.
You got plenty of space to work with, so fitting a single X-15 in there should be no problem. I actually modeled your setup and everything looks good in that airspace/tuning on your power with the SSF set at 24hz. If you'd like I can knock out a design for you, just decide what sub you're going to use. That X should do great and the Zv6 should work in the same enclosure.
- Thread Starter
- #14
I knew you couldn’t call it quits!! Although I’ve been saying “this is my last sub” for approximately 10yrs now Lol.
Thanks bro. I need to make a decision on which direction to go haha
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- Thread Starter
- #15
@shredder1 hey bro, if I go with the Zv6 15” d2, what mods would I have to make to the current box to get between 29-30hz? I was thinking about mounting the sub external but then the magnet would block my view behind. I was thinking about A) cutting the top off and gluing more height so the sub mounts in the box or B) adding ___” of a MDF rings so the sub sits inside box.
Do you need more pics of the custom box that sits on an angle behind the 3rd row?
Do you need more pics of the custom box that sits on an angle behind the 3rd row?
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