Peerless XXLS308 SWR 51

12" · 8 Ω · 175 W · 88.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	21.5 Hz
Qts	0.448
Qes	0.47
Qms	9.58
Vas	162.5 L
Sd	466 cm²
Xmax	11.5 mm
Re	5.9 Ω
Bl	13.2 T·m
Mms	102.7 g
Pe	175 W
Sensitivity	88.7 dB

Alignment hint

EBP	46 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 109 L

EBP < 50: favours a sealed (closed) 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
Peerless XXLS-830845	21.5 =	0.448 =	162.5 =	7.6 -3.9	88.7 =	close	Xmax 7.6 mm < 11.5 mm: lower excursion-limited SPL	+
AE Speakers SBP12-8	23.6 +2.1	0.479 +0.03	160 -2.5	14 +2.5	89.5 +0.8	close		+
Ground Zero GZTW 12MK2 vp	22.5 +1	0.484 +0.04	148.6 -13.9	14.7 +3.2	89.9 +1.2	close		+
NHT 1259	19 -2.5	0.461 +0.01	190 +27.5	12 +0.5	89.4 +0.7	close	4 Ω vs 8 Ω: amp load changes	+
Morel UW 1258	21 -0.5	0.431 -0.02	138.4 -24.1	12.5 +1	86.3 -2.4	close		+
JL Audio 12W0-8	23.2 +1.7	0.426 -0.02	159.989 -2.51	8.636 -2.86	88.3 -0.4	close	125 W vs 175 W: lower power handling · Xmax 8.636 mm < 11.5 mm: lower excursion-limited SPL	+
SB Acoustics SB34NRX75-6 vp fx	22.9 +1.4	0.496 +0.05	181.3 +18.8	11 -0.5	90.6 +1.9	close	Xmax 11 mm < 11.5 mm: lower excursion-limited SPL	+
Adire Audio SHIVA MK II - DVC Parallèle	22 +0.5	0.385 -0.06	158 -4.5	14.1 +2.6	92.7 +4	usable	4 Ω vs 8 Ω: amp load changes	+
Image Dynamics IDMAX 12D4V3	20 -1.5	0.336 -0.11	165 +2.5	12.3 +0.8	88.4 -0.3	usable		+
Eminence LAB 12 \|	22 +0.5	0.38 -0.07	125.2 -37.3	13 +1.5	89.2 +0.5	usable	6 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the XXLS308 SWR 51 →

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.