LTT 15" Dayton Reference HF

[MStrickland1988]

Looking to trade my Dayton 15" Reference for another good sub that will work in a smaller vented box. The Dayton will do awesome in a large box tuned to 18hz but I bought it without realizing I do not have the space. Interested in all offer so let me know what you have. Located in Cleveland, ohio

 

[WmAx]

Looking to trade my Dayton 15" Reference for another good sub that will work in a smaller vented box. The Dayton will do awesome in a large box tuned to 18hz but I bought it without realizing I do not have the space. Interested in all offer so let me know what you have. Located in Cleveland, ohio

I am not sure what kind of SPL levels, extension and sound quality you desire. But as you get smaller, while retaining high SPL and high SQ, the driver cost increases exponentially, typically. So, don't expect any kind of even, or even half-way even trade, if you intend to get equivalent performance of the Dayton RS 15" in 18Hz tuned cabinet, in a much smaller package.

-Chris

 

[MStrickland1988]

A lot of wanting to trade is the frustration of trying to design my box.

 

[highfigh]

A lot of wanting to trade is the frustration of trying to design my box.

You could always ask for help here- many have the better software and are more than willing to help.

 

[TLS Guy]

You could always ask for help here- many have the better software and are more than willing to help.

He has already had a lot of help.

Like a lot of beginners he wants to defy the laws of physics.

 

[highfigh]

Like a lot of beginners he wants to defy the laws of physics.

Seems to be part of Human nature- "You can't do that". Response- "Oh, really? Just watch me!".

 

[WmAx]

A lot of wanting to trade is the frustration of trying to design my box.

There is a box design here, sticked at the top of the forum (Kappa VQ sub), that can be used with JL Audio 12W7. With this driver, you will get equivalent output/extension, and perhaps slightly better, than the Dayton RS 15" sub can produce. It is a more expensive proposition, but there you have it (smaller, pre-designed layout for you, etc.) if you so choose. That cabinet was designed specifically to allow for a wide variety of high performance drivers, and it's port is carefully chosen as not produce port compression, even with the extreme demands of a 12W7. Note: You will need 1000 RMS to power the 12W7 properly.

-Chris

 

[WmAx]

He has already had a lot of help.

Like a lot of beginners he wants to defy the laws of physics.

I don't see where he want to defy physics. Just economics. As you know, the W7 drivers will perform equally with conventional subs of much larger diameter, at the trade of higher cost(such extraordinary / capable driver as a W7 is never going to be cheap).

-Chris

 

[TLS Guy]

I don't see where he want to defy physics. Just economics. As you know, the W7 drivers will perform equally with conventional subs of much larger diameter, at the trade of higher cost(such extraordinary / capable driver as a W7 is never going to be cheap).

-Chris

I guess I will settle for a combination. He does want it on the cheap, but physics dictate a woofer that will perform in a larger box will be cheaper than one which performs in a smaller box.

 

[lsiberian]

There is a box design here, sticked at the top of the forum (Kappa VQ sub), that can be used with JL Audio 12W7. With this driver, you will get equivalent output/extension, and perhaps slightly better, than the Dayton RS 15" sub can produce. It is a more expensive proposition, but there you have it (smaller, pre-designed layout for you, etc.) if you so choose. That cabinet was designed specifically to allow for a wide variety of high performance drivers, and it's port is carefully chosen as not produce port compression, even with the extreme demands of a 12W7. Note: You will need 1000 RMS to power the 12W7 properly.

-Chris

I think the Shiva-X #2 is the driver to fill the bill for the users needs.

The Shiva-X #2( $231.00) will also perform well in that box and is lot cheaper than the 12w7($440). It's also possible to build the Shiva into a small sealed box(1.6 ft^3) and shape it's response with a Behringer Feedback Destroyer.

At 435, I'd rather have the Audiopulse Axis 12" myself which is only 400 dollars at parts-express.

 

[MStrickland1988]

TLS, I do appreciate your help but I've realized a 10 cubic foot box is just too big, hence wanting a driver that doesn't need as big of a box. I modeled a 6 net cubic foot enclosure with a tuning of 18hz and results look good except xmas is around .5mm at the tuning frequency with a normal looking drop in spl (how?). Also, the port length using a 1.5" x 17.5" slot port has varied widely from calculator to calculator. It's just frustrating as you can imagine to someone new to DIY building. Everything else has looked very good though, according to Bassbox pro. The 6 cubic foot design only gives up a little extension with an f3 of 18.87hz using an 18hz HP filter at 12db/octave.

 

[TLS Guy]

TLS, I do appreciate your help but I've realized a 10 cubic foot box is just too big, hence wanting a driver that doesn't need as big of a box. I modeled a 6 net cubic foot enclosure with a tuning of 18hz and results look good except xmas is around .5mm at the tuning frequency with a normal looking drop in spl (how?). Also, the port length using a 1.5" x 17.5" slot port has varied widely from calculator to calculator. It's just frustrating as you can imagine to someone new to DIY building. Everything else has looked very good though, according to Bassbox pro. The 6 cubic foot design only gives up a little extension with an f3 of 18.87hz using an 18hz HP filter at 12db/octave.

This is an optimal 6 cu.ft alignment for that driver.

Name: RSS390HF-4 15"
Type: Standard one-way driver
Company: Dayton Loudspeaker Co.
No. of Drivers = 1
Fs = 18 Hz
Qms = 3.1
Vas = 270.3 liters
Cms = 0.168 mm/N
Mms = 466.2 g
Rms = 17.01 kg/s
Xmax = 14 mm
Xmech = 21 mm
P-Dia = 368.3 mm
Sd = 1065 sq.cm
P-Vd = 1.491 liters
Qes = 0.49
Re = 3.3 ohms
Le = 1 mH
Z = 4 ohms
BL = 18.84 Tm
Pe = 500 watts
Qts = 0.42
no = 0.31 %
1-W SPL = 87.06 dB
2.83-V SPL = 90 dB
-----------------------------------------
Box Properties
Name:
Type: Vented Box
Shape: Prism, square (optimum)
Vb = 6 cu.ft
Fb = 16.29 Hz
QL = 5.274
F3 = 23.04 Hz
Fill = minimal
No. of Vents = 1
Vent shape = rectangle
Vent ends = two flush
Hv = 2 in
Wv = 14 in
Lv = 45 in

Note that F3 moves up to 23 Hz, but that still makes it a pretty good sub. You need to add driver displacement, the port volume, bracing, and amp the Vb to get Vt. So it will end up I suspect a little over 7 cu.ft.

I would not put that driver in a smaller vented box.