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Peerless FSL-1230PR01-08

Best box: 45.8 L bass reflex tuned to 39.1 Hz · F3 55.7 Hz

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Comparable 12.0" Drivers

Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless FSL-1230PR01-08 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.

Peerless

FSL-1230PR01-04

12.0" · Fs 57.0 Hz · Qts 0.56 · Vas 47.0 L

Peerless

PRLFSL1220R0208

12.0" · Fs 62.0 Hz · Qts 0.55 · Vas 61.1 L

Peerless

1220R02-08

12.01" · Fs 62.0 Hz · Qts 0.55 · Vas 61.1 L

Skar Audio

EV-12 S4

12.0" · Fs 45.7 Hz · Qts 0.71 · Vas 34.3 L

Skar Audio

EV-12 D2

12.0" · Fs 45.0 Hz · Qts 0.75 · Vas 34.6 L

Bomber

SUBWOOFER 12″ OUTDOOR 500 WRMS 4 OHMS

12.0" · Fs 48.0 Hz · Qts 0.67 · Vas 45.3 L

Compare them in the same box → Browse all 12.0" drivers → All Peerless drivers →

Recommended Bass Reflex (Vented)

PORT BUILDABLE

Net Box Volume (Vb)	45.8 Liters
Tuning Frequency (Fb)	39.1 Hz
F3 (-3 dB Cutoff)	55.7 Hz
F6 / F10 Extension	46.3 Hz / 35.7 Hz
Port Inner Diameter	Ø 12.5 cm
Port Physical Length	43.6 cm
First Pipe Resonance	395.0 Hz
Estimated MOL @ F3	118.1 dB SPL

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Sealed (Acoustic Suspension) — compromise

SUITS INFINITE / OPEN BAFFLE

With Qts 0.73 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.032; for a flat response this driver is better used on an infinite (IB) or open baffle.

Net Box Volume (Vb)	57.2 Liters
System Q (Qtc)	1.032 (above Butterworth: Qtc cannot fall below Qts (0.73))
System Resonance (Fc)	65.1 Hz
F3 (-3 dB Cutoff)	53.8 Hz
F6 / F10 Extension	44.4 Hz / 35.6 Hz
Air Spring Linearity	High (Zero port compression)

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Thiele/Small Parameters

Resonance (Fs)	46.0 Hz
Total Q (Qts)	0.73
Electrical Q (Qes)	0.8
Mechanical Q (Qms)	8.31

Equivalent Volume (Vas)	57.2 Liters
Diaphragm Area (Sd)	535.0 cm²
DC Resistance (Re)	6.1 Ω
Efficiency Bandwidth Product (EBP)	57.5

Linear Excursion (Xmax)	12.1 mm
Thermal Power (Pe)	600.0 W
Nominal Diameter	12.0"
Catalog Source	Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for Peerless FSL-1230PR01-08?

Load Forge's calculated alignment puts Peerless FSL-1230PR01-08 in a 45.8 liter vented enclosure tuned to 39.1 Hz, reaching an F3 cutoff of approximately 55.7 Hz.

Can Peerless FSL-1230PR01-08 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 57.2 liters with a Qtc of 1.032 (above Butterworth: Qtc cannot fall below Qts (0.73)), the system exhibits an F3 of 53.8 Hz.

What port dimensions should be used for Peerless FSL-1230PR01-08 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 43.6 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.

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