Please Help Me Decide Between These 8" Subs

[703autosport]

Thats right, Im thinking outside the box about running six 8" subs in place of my current set-up of 2 Xtant X2 1244's but dont know which are the better choice. Here are my choices; Arc Audios- Arc series 8d4's, Diamond Audios d308's, Rockford Fosgate's new p2d48's/their last years version of the p310d4's since they stopped making them, or possibly fosgate p210d4's even though their 10's...I found a crazy deal on them at $50 a pop. Im looking for a balance between sound quality and spl that can possibly top my xtants and Ill have them running off an xtant 1001dx(not sure weather to run them sealed or ported yet, any suggestions?). I want to do something differant which is why Im looking into 8's and I have to go with one of these choices because Im in a mobile training school in Jersey that gets half off these brands for students. Let me know your opinions, good or bad and if you want the specs on the subs I can post them up as well. Thanks

[wfeld]

8" subs??? why??

[703autosport]

Just because its something differant, everyone and their mother has 12's and 15's but you dont see 8's often... If I design it right, the look on peoples faces alone would be worth it when they find out that Im only running 8's and out dropping them... only thing Im worried about is that it would be built mostly out of glass, my current set-up hits 142.4. Also cause I beleive that 8's are more responsive than 12's+ but Im sure some people might disagree

[Dale]

could you post the specs? that would surely help

[Eric B]

8's are old school, they can get low too, ive heard 4 8's before and loved it

[703autosport]

Yea Ill post what specs I have, itll take a few to write it up

[703autosport]

Rockford Fosgate P38D4(last years model)-

250W Recommended RMS Power

500W Peak Power Handling

2" Anodized Aluminum Voice Coil Former

Embedded Tinsel leads lower resistance

Massive 57oz. magnet assembly

Parabolic Triangular Geometry cone support system

Precision 2-piece basket is cast from aluminum alloy

Reversible concealing ring

Large roll surround

Sensitivity: 81 dB

Frequency Response: 39-250 Hz

Impedance: dual 4 ohms subwoofer wiring options

Rec. Sealed Box Dims: 0.30 - 0.30 cu. ft.

Rec. Ported Box Dims: 0.63 - 0.63 cu. ft.

5 1/8" Mounting Depth

6 7/8" Cutout Diameter

Rockford Fosgate P2D48-

Custom 10-AWG nickel plated push terminals

Extended pole piece and bumped backplate

High density poly-foam surround

High-temp voice coil with spun-laced Nomex® re-inforcement collar

Linear spider with embedded 16 AWG tinsel leads

Parabolic injection molded ABS/Acrylic dustcap

Sturdy 16 gauge compound-bend frame

Thermoformed polypropylene cone

Vented spider cavity

Impedance 4-Ohm x 2

Power Handling 200 Watts RMS

400 Watts Max

Sensitivity 84 dB

Motor Size 38 oz. Double Stacked

Voice Coil Diameter 2.0" 4-Layer

Speaker Connector Dual 10 AWG compression

Mounting Depth 4.625"

Rec. Sealed Enclosure 0.23 cu. ft.

Range: 0.20 cu. ft. - 0.30 cu. ft.

Rec. Vented Enclosure 0.65 cu. ft.

Shipping Weight 10.00 Lbs.

Rockford Fosgate P210D4(last years model)-

Parabolic Triangular Geometry cone

60 oz. double-stacked magnet

Compliant linear spider

Precision CRS basket is stamped from cold rolled steel

2" anodized aluminum voice coil former stays up to 100° cooler

Large roll surround allows for 20% greater linear excursion than standard surrounds

Insulated tinsel leads

Custom compression terminals accept up to 8 gauge wire

Mounting Depth: 5.6"

Cutout Diameter: 9.25"

Rec. Sealed Box Dims: 0.65 - 0.65 cu. ft.

Rec. Ported Box Dims: 1.00 - 1.00 cu. ft.

Sensitivity: 85.8 dB

Frequency Response: n/a

Recommended RMS Power: 250W

Peak Power Handling: 500W

Arc audio Arc 8D4-

Dual 4 ohm

150 watts rms / 300 peak

One piece molded rubber surround

High temp black anodized voice coil

Progressive flat spider

Extended bump plate

Impedance : 2 or 8 ohm

Resonant frequency : 24.7Hz

Sensitivity : 85.6 db

RMS power handling : 150 watts

Electrical "Q" : .367

Mechanical "Q" : 3.572

Total "Q" : .332

Equivalent volume: 1.55

One way linear: 15 mm

Mounting depth : 4.75"

Optimum sealed enclosure : .35 cuft

Ported enclosure : .6 cuft

Diamond Audio D308-

Textured Copolymer Cones with Aluminum Dust Cap

Nitrile Butadine Rubber (NBR) Surround

Extra Heavy Gauge Stamped Steel Basket

Optimized Spider with Balanced Linear Suspension

Integrated Tinsel Leads

Venturi Vented Basket

Vented Pole Piece

Double Stacked Ferrite Magnet

Available with Dual 2 Ohm or Dual 4 Ohm 2.5" Voice Coils

Power Handling NOM/MAX: 200/400 Watts

Sensitivity (2.83V/1m): 83 dB SPL

Freq. Response: 30-500 Hz

Mounting Depth: 4.1 in.

Diameter: 7.4 in.

[Ray]

I run 8's.

The biggest problem with running small drivers is finding some that can do what you need them to do, get loud and low.

The ascendant audio 8 and the digital design 8 are the 2 loudest 8's that ive ever played with.

aa8 was loud ... had 6 of them off 2500rms and did a 150 legal. but didnt have the quality I was looking for in sound

Now i rune the dd 8's just 2 of them 800rms, and it is plenty. Now i havent metered them yet but my guess is that they are doing a 140 on music, not bad for 2 little 8's.

When I demo them I always ask poeple to guess what I have in there, and i get it all..

2 12's, a fifteen, 2 badass tens etc.. they never guess 8's

have fun.

[roscoe1129]

when JL came out with their 6.5 subwoofer I did 30 of them in an extended cab ram. They got pllenty loud and was a real shocker to people, I think it metered around 145 on the old termlab, so probably 142-3ish on the new TL....