Peerless 308SWR51XXLSP (830847)

12" · 4 Ω · 220 W · 93.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	21.8 Hz
Qts	0.357
Qes	0.37
Qms	10.24
Vas	144.2 L
Sd	466 cm²
Xmax	10.8 mm
Re	2.5 Ω
Bl	10.2 T·m
Mms	112.5 g
Pe	220 W
Sensitivity	93.1 dB

Alignment hint

EBP	59 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 49.3 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
Peerless XXLS12-8+8	21.8 =	0.357 =	144.2 =	9.7 -1.1	93.1 =	close	175 W vs 220 W: lower power handling · Xmax 9.7 mm < 10.8 mm: lower excursion-limited SPL	+
Infinity KAPPA 120.1SE	22.5 +0.7	0.359 =	146.5 +2.3	11.2 +0.4	92.4 -0.7	close		+
Pioneer TSW 304 C	21 -0.8	0.342 -0.01	146 +1.8	11 +0.2	92 -1.1	close		+
Adire Audio SHIVA MK II - DVC Parallèle	22 +0.2	0.385 +0.03	158 +13.8	14.1 +3.3	92.7 -0.4	close		+
Eminence LAB 12 C	22.9 +1.1	0.33 -0.03	128.3 -15.9	11 +0.2	92.6 -0.5	close		+
Dayton Audio 12 DVC	25 +3.2	0.347 -0.01	147.3 +3.1	15.5 +4.7	94 +0.9	close		+
Adire Audio SHIVA MK I - DVC Parallèle	23 +1.2	0.386 +0.03	163 +18.8	14 +3.2	93.4 +0.3	close		+
Pioneer TS-W 304 C	21 -0.8	0.307 -0.05	136 -8.2	11 +0.2	92.2 -0.9	close		+
Peerless 830952	19.1 -2.7	0.365 +0.01	159 +14.8	13 +2.2	91.5 -1.6	close		+
Eminence LAB 12	22 +0.2	0.379 +0.02	125.2 -19	11 +0.2	90 -3.1	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 308SWR51XXLSP (830847) →

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.