Where da fruck is Lara?? Australia, Venezuela, or other?
Help u out a bit to post the sub's specs, OP....
Is yours a 2- or 4-ohm voice coil? What amp are u using to power it?
Product Specifications:
•13" Single 4 ohm SPG Series Oval Subwoofer
•Power Handling: 1000 watts RMS
•Impedance: Single 2 or 4 ohm VC
•Polypropylene cone woofer
•Foam woofer surround
•RadialVent® cooling directs airflow around the voice coil for increased power handling
•RVC™ (Removable Voice Coil) allows coil to be exchanged without removing the woofer from the enclosure
•SPS™ (Soft Part System) technology allows for cone assembly removal
•SPG555 can be field-stripped and custom painted, powder-coated, or plated for a custom look
•Simplified mounting with the integral sealing gaskets
•3-1/2" Voice coil
•3-3/4" peak to peak excursion for devastatingly accurate, deep bass output from small sealed enclosures
•555 cm2 of surface area
•Compatible with the SPG-TR passive radiator
•Frequency response: 20-350 Hz
•Sensitivity: 87.7dB
•Xmax: 22mm
•Mounting Depth: 8-1/4"
•Cutout Dimensions: 13-3/16" x 10-7/16"
Says that it can go as small as 1cube, sealed, tho I wouldn't try it...
SPG555 Thiele-Small Parameters
Model: SPG555-4
Fs (Hz): 31.90
Re (Ohms): 3.15
Qms: 11.66
Qes: 0.86
Qts: 0.80
Vas (Liters): 39.77
Mms (Grams): 276.7
Cms (μM/Newton): 89.9
Xmax (Mm): 22
Xmech (Mm): 49
Sd (CM 2): 555
Bl (Tesla-M): 14.27
SPL Eff (dB @ 1w/1m): 83.6
SPL Sen (dB @ 2.83v): 87.7
SPG555-2
29.68
1.68
11.70
0.67
0.63
44.40
286.20
99.9
22
49
555
11.58
84.2
91.0
You could once upon a time purchase this enclosure from
SonicElectronix:
•Custom Ported Enclosure for the 13" Boston Acoustics SPG555 subwoofers
•Color is black
•Carpeted finish
•Mounting depth: 12"
•Cutout diameter: 13" (Cutout hole is oval for the SPG555 subwoofer)
•Box volume: 2.15 cubic feet
•Total port volume: 0.27 cubic feet
•Dimensions: 15-3/4"D x 23-3/4"W x 15-3/4"H