Peavey 1508-8 SPS BWX

15" · 8 Ω · 500 W · 98.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	41.9 Hz
Qts	0.438
Qes	0.457
Qms	10.357
Vas	185.9 L
Sd	840 cm²
Xmax	4.7 mm
Re	5.27 Ω
Bl	15.3 T·m
Mms	76.8 g
Pe	500 W
Sensitivity	98.6 dB

Alignment hint

EBP	92 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 115.7 L

EBP 50-100: works in either a sealed or ported alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
Fane SOVEREIGN 15-425	43 +1.1	0.417 -0.02	180.6 -5.3	4.6 -0.1	98.5 -0.1	close	Xmax 4.6 mm < 4.7 mm: lower excursion-limited SPL	+
B&C 15 FCX 76	40 -1.9	0.445 +0.01	187 +1.1	6.5 +1.8	97.9 -0.7	close		+
Beyma SM115	42 +0.1	0.405 -0.03	185 -0.9	6.7 +2	98.2 -0.4	close		+
SICA 15 BP 3 SL	41.9 =	0.419 -0.02	191.6 +5.7	4 -0.7	98.7 +0.1	close	350 W vs 500 W: lower power handling · Xmax 4 mm < 4.7 mm: lower excursion-limited SPL	+
SICA P-A-SL15B3P	41.9 =	0.419 -0.02	191.6 +5.7	4 -0.7	98.7 +0.1	close	350 W vs 500 W: lower power handling · Xmax 4 mm < 4.7 mm: lower excursion-limited SPL	+
Beyma 15CXA400Fe	40 -1.9	0.419 -0.02	191 +5.1	6 +1.3	97.6 -1	close		+
B&C 15 CX 40	44 +2.1	0.43 -0.01	162 -23.9	4.5 -0.2	98.7 +0.1	close	Xmax 4.5 mm < 4.7 mm: lower excursion-limited SPL	+
P.Audio R15/64W	41.1 -0.8	0.452 +0.01	172.2 -13.7	5 +0.3	96.7 -1.9	close	250 W vs 500 W: lower power handling	+
Selenium 15PW5	40 -1.9	0.4 -0.04	190 +4.1	5.7 +1	98.3 -0.3	close	350 W vs 500 W: lower power handling	+
18 Sound 15W750	40 -1.9	0.42 -0.02	182 -3.9	8 +3.3	98 -0.6	close	16 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 1508-8 SPS BWX →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.