18 Sound D-103

10" · 8 Ω · 150 W · 92.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	8 Ω
Fs	40.6 Hz
Qts	0.522
Qes	0.625
Qms	3.17
Vas	93.7 L
Sd	380 cm²
Xmax	6 mm
Re	7.07 Ω
Bl	9.8 T·m
Mms	33.2 g
Pe	150 W
Sensitivity	92.5 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 112.2 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
Davis 25SCA10T	41 +0.4	0.449 -0.07	91.3 -2.4	4.8 -1.2	93.4 +0.9	close	60 W vs 150 W: lower power handling · Xmax 4.8 mm < 6 mm: lower excursion-limited SPL	+
Eminence LEGEND BP102	35 -5.6	0.432 -0.09	91.2 -2.5	6.2 +0.2	92.7 +0.2	close		+
Celestion PULSE XL 10.20-8	37.5 -3.1	0.459 -0.06	76.9 -16.8	8.3 +2.3	92.5 =	usable		+
Europsonic HP25/100 vp	36.6 -4	0.552 +0.03	124.4 +30.7	5.5 -0.5	91.6 -0.9	usable	50 W vs 150 W: lower power handling · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Ciare HX255	43 +2.4	0.577 +0.05	75.9 -17.8	4.8 -1.2	93.2 +0.7	usable	100 W vs 150 W: lower power handling · Xmax 4.8 mm < 6 mm: lower excursion-limited SPL	+
SICA 10 SR 2 PL	32.6 -8	0.481 -0.04	82.3 -11.4	6.5 +0.5	90.6 -1.9	usable		+
SICA Z005780	31.7 -8.9	0.455 -0.07	92.6 -1.1	8.9 +2.9	93.5 +1	usable	4 Ω vs 8 Ω: amp load changes	+
Davis 25GCA10WR vp	39.2 -1.4	0.405 -0.12	74.4 -19.3	6 =	93 +0.5	usable		+
Focal 10P08 vp	43.2 +2.6	0.56 +0.04	65 -28.7	5.5 -0.5	93.9 +1.4	usable	80 W vs 150 W: lower power handling · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 10BR60 V2 vp JF bleu	32 -8.6	0.459 -0.06	99.9 +6.2	6.5 +0.5	90 -2.5	usable	100 W vs 150 W: lower power handling	+

Compare the closest 3 against the D-103 →

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.