Boston Acoustics 800, GS1000, GS1500, 12.5LF, 8.5LF, 10.5LF, GS1200 ProSeries Competitor Series

	ProSeries			Competitor Series
Specifications	12.5LF	10.5LF	8.5LF	1500
Nominal Size	12" (30cm)	10" (25cm)	8" (20cm)	15" (38cm)
Mounting Cutout Diameter	11" (280mm)	91⁄8" (232mm)	73⁄16" (183mm)	137⁄8" (353mm)
Mounting Depth—Front Mounted	55⁄8" (143mm)	43⁄4" (121mm)	41⁄16" (104mm)	73⁄4" (197mm)
Mounting Depth—Rear Mounted	63⁄8" (162mm)	5" (127mm)	411⁄16" (119mm)	81⁄4" (210mm)
Recommended Amplifier Power	50–1200 watts	50–1100 watts	50–750 watts	50–1000 watts
Nominal Impedance	2Ω/4Ω	2Ω/4Ω	2Ω/4Ω	2Ω/4Ω

	ProSeries						Competitor Series
Theile/Small Parameters	12.5LF	12.5LF	10.5LF	10.5LF	8.5LF	8.5LF	1500	1500
	(2Ω)	(4Ω)	(2Ω)	(4Ω)	(2Ω)	(4Ω)	(2Ω)	(4Ω)
Resonant Frequency (Fs )	30Hz	31Hz	33Hz	34Hz	35Hz	36Hz	34Hz	35Hz
Equivalent Volume (Vas)	84 liters	84 liters	35 liters	35 liters	21 liters	21 liters	155 liters	155 liters
	2.97ft3	2.97ft3	1.24ft3	1.24ft3	0.74ft3	0.74ft3	5.47ft3	5.47ft3
Total Q (Qts )	0.45	0.57	0.44	0.53	0.33	0.40	0.72	0.85
Electrical Q (Qes)	0.47	0.61	0.47	0.57	0.35	0.42	0.81	0.97
Mechanical Q (Qms)	9.8	9.6	8.0	7.8	9.0	9.0	8.3	8.3
Compliance (Cms)	230µm/N	230µm/N	255µm/N	255µm/N	330µm/N	330µm/N	142µm/N	142µm/N
Moving Mass (Mms)	121g	117g	90g	86g	63g	60g	148g	145g
Cone Area (Sd)	510cm2	510cm2	315cm2	315cm2	215cm2	215cm2	876cm2	876cm2
Voice Coil Diameter	51mm	51mm	51mm	51mm	51mm	51mm	51mm	51mm
Voice Coil DCR (Re )	1.6Ω	3.1Ω	1.6Ω	3.1Ω	1.6Ω	3.1Ω	1.6Ω	3.2Ω
Voice Coil Inductance @ 1kHz (Le )	0.40mH	0.55mH	0.40mH	0.55mH	0.40mH	0.55mH	0.45mH	0.62mH
Linear Excursion—One Way (Xmax )	8.5mm	8.5mm	8.5mm	8.5mm	8.5mm	8.5mm	5.5mm	5.5mm
Peak-to-Peak Maximum Excursion	40mm	40mm	35mm	35mm	35mm	35mm	40mm	40mm
Reference Efficiency ( ηo )	0.46	0.39	0.26	0.25	0.25	0.22	0.73	0.64

We provide Theile/Small Parameters for those interested in studying subwoofers further. We do not recommend you use computer software to determine enclosure sizes or type. While high–end enclosure design software may be useful for engineering purposes, it cannot completely predict perform- ance in a given vehicle and should not replace a real enclosure that has been tested and listened to in a car. Please use our recommended enclosures for optimum performance.

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