Hi, I'm going to order my first Sundown sub))) And want to start from 8 inch, but I don't know which one to choose, D2 or D4??? I don't have an amp right now and box, want to buy sub first. Any suggestions? Thanks

One more question, I found this box on ebay, since it's winter, and I don't have time to build my own, is it ok for SA8??

8 INCH VENTED SUB BOX PORTED SUBWOOFER 40" PORT LOUD!

Width: 12-1/2"

Height: 10-1/2"

Depth: 16-1/2"

Cutout Diameter: 7-1/8"

Box Volume (Cubic Feet Per Chamber): 0.8

Mounting Depth: 11-1/4"

Box Type: Vented

Box Color: Gray

Box Finish: Carpet

Material: MDF

MDF Thickness: 3/4"

Dimensions (in): Width 12-1/2" x Height 10-1/2" x Depth 16-1/2"

Ebay

Edited January 23, 201213 yr by KYRGYZ

One Dual 2ohm driver wiring configurations:

One Dual 4ohm driver wiring configurations:

Depending on your amplifier's power rating, and stability at 1ohm, 2ohm, you'll want to pick the coil config accordingly.

It would be nice to know the dimensions of the port. With the dimensions listed gross volume would be 0.86 cu.ft. assuming the use of 3/4" MDF. That would also make the port 9" high and it says 40" long, the only unknown then is the width. If it is 1" wide you would end up with .51 net after port and woofer displacement, tuned to 33Hz with 9 sq. inches of port. Not really big enough but that's with alot of guessing.

Without the port area you can't find the tuning. If I was to guess, I'd assume it's around 40hz.

Thanks guys, I think my amp will be this Pioneer or something like this, because my budget is not enough(((

Pioneer GM-3400T 2-Channel Bridgeable Amplifier with 350 Watts

Two-channel car amplifier with 350-watt max power capability

Delivers 60 watts x 2 at 4 ohms, 150 watts x 1 at 4 ohms, or 75 watts x 2 at 2 ohms

Selectable low-pass filter (80 Hz, 12 dB per octave)

Preamp- and speaker-level inputs for connecting to most source units

Amazon

If you are looking for a decent budget amp you may look at Audiopipe. That Pioneer is a little underpowered for that sub.

Personally I'd get a d4 and run in parallel at 2 ohm. Then later down the road if you want to add on you can buy a second one and wire down to 1 ohm.

Would also look at buying an amp that is 1 ohm stable.

If you are looking for a decent budget amp you may look at Audiopipe. That Pioneer is a little underpowered for that sub.

Personally I'd get a d4 and run in parallel at 2 ohm. Then later down the road if you want to add on you can buy a second one and wire down to 1 ohm.

Would also look at buying an amp that is 1 ohm stable.

Right now I'm going to use 1 sub only, because I had to sell my 12 inch pioneer for more trunk space.

So still you think 1 sub D4 is better to choose than D2?

It would depend on what amp you are using as to what coil would work best.

I'm going to take this one and sub will be SA8 D4, so I will use it as 2 Ohm

Rockford Fosgate Prime R500-1

mono subwoofer amplifier

320 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)

CEA-2006 compliant

variable low-pass filter filter (40-130 Hz, 12 dB/octave)

variable bass boost (0-12 dB at 45 Hz)

wired remote Punch Level Control included

Class-AB amplifier design

frequency response: 20-200 Hz

MOSFET power and output stages

preamp-level inputs and outputs

8-gauge power and ground leads recommended — wiring and hardware not included with amplifier

fuse rating: 30A x 2

7-11/16"W x 2-1/2"H x 17-1/4"D

Thanks guys!!!

I think you will be happy with that. All you need now is a proper box.