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am building a Sub for my Deck and have chosen a JBL GTO 1502D mated to a Bash 300W digital Amp. I plan an HT sub with an IXL18.4 and Behringer EP2500 but I wanted to make sure I know what I'm doing.

I went with the JBL because it is polypropylene and this sub with be on my deck, covered but open to the elements and the amp seems the simplest for a first build.

I have extensive woodworking skills so ported or LLT, whatever is going to give me the best sound.

I am having no luck with the WinISD software I downloaded.

The speaker specs.
VOICE COIL DC RESISTANCE: REVC (OHMS) . . . . . . 0.96
VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH) . . . . . . . 0.50
DRIVER RADIATING AREA: SD (IN2) . . . . . . . 132.53
SD (M2) . . . . . . . 855.00
MOTOR FORCE FACTOR: BL (TM) . . . . . . . . 8.20
COMPLIANCE VOLUME: VAS (FT3) . . . . . . . . 6.04
VAS (LITERS) . . . . 171.00
SUSPENSION COMPLIANCE: CMS (μM/N) . . . . 164.70
MOVING MASS, AIR LOAD: MMS (GRAMS). . . . 246.90
MOVING MASS, DIAPHRAGM: MMD (GRAMS) . . . 232.50
FREE-AIR RESONANCE: FS (HZ) . . . . . . . . 25.00
MECHANICAL Q: QMS . . . . . . . . . . . 6.08
ELECTRICAL Q: QES . . . . . . . . . . . 0.55
TOTAL Q: QTS . . . . . . . . . . . . 0.51
MAGNETIC-GAP HEIGHT: HAG (IN) . . . . . . . . 3/8
HAG (MM) . . . . . . . . 9.00
VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . 1.00
HVC (MM) . . . . . . . . . . 26
MAXIMUM EXCURSION: XMAX (IN) . . . . . . . 5/16
XMAX (MM) . . . . . . . 8.50
SENSITIVITY (2.83 V @ 1 M): 93 dB
POWER HANDLING: 300 WRMS 1200 W PEAK
FREQUENCY RESPONSE: 23 ~ 400 HZ
NOMINAL IMPEDANCE: 1 or 4 OHMS
VOICE-COIL DIAMETER: 2.0" (51.0 MM)

From reading here I'd like to tune the sub to 30Hz

What about the 50-150Hz crossover on the amp. Do I need to disable it?

Thanks in advance
 
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