American Bass SL 104

10" · 4 Ω · 250 W · 84.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	33.6 Hz
Qts	0.52
Qes	0.58
Qms	4.931
Vas	26.8 L
Sd	314 cm²
Xmax	8.5 mm
Re	3.69 Ω
Bl	11.53 T·m
Mms	99.1 g
Pe	250 W
Sensitivity	84.3 dB

Alignment hint

EBP	58 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 31.6 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
Polk Audio DB1040	35 +1.4	0.55 +0.03	28.3 +1.5	7.5 -1	85 +0.7	close	Xmax 7.5 mm < 8.5 mm: lower excursion-limited SPL	+
JL Audio 10W6V3-D4	30.1 -3.5	0.513 -0.01	23.3 -3.5	10.5 +2	83.6 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
Boston Acoustics COMPETITOR 1000S4	34 +0.4	0.53 +0.01	35 +8.2	8.5 =	85.7 +1.4	close		+
Gladen RS-X 10	35.57 +1.97	0.46 -0.06	27.8 +1	10 +1.5	85.9 +1.6	close		+
JL Audio 10W3V3-2	33 -0.6	0.495 -0.03	32.17 +5.37	14 +5.5	85.37 +1.07	close	2 Ω vs 4 Ω: amp load changes	+
Polk Audio MM100	35 +1.4	0.46 -0.06	22.1 -4.7	8.7 +0.2	84.7 +0.4	close		+
Rockford Fosgate P3D2-10	26.6 -7	0.495 -0.03	27 +0.2	9.4 +0.9	85.7 +1.4	close		+
Hertz Audio DS 250.3	36 +2.4	0.62 +0.1	29 +2.2	10 +1.5	84.8 +0.5	close		+
JL Audio 10W0V3-4	32.09 -1.51	0.604 +0.08	31 +4.2	11.4 +2.9	84.07 -0.23	close		+
JL Audio 10W3V3-4	31.5 -2.1	0.485 -0.04	32.23 +5.43	14 +5.5	84.87 +0.57	close		+

Compare the closest 3 against the SL 104 →

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.