Morel PRIMO 104

10" · 4 Ω · 300 W · 85.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	35 Hz
Qts	0.56
Qes	0.68
Qms	3.1
Vas	38 L
Sd	320 cm²
Xmax	8 mm
Re	3 Ω
Bl	10.5 T·m
Mms	70 g
Pe	300 W
Sensitivity	85.6 dB

Alignment hint

EBP	51 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 63.9 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
Boston Acoustics COMPETITOR 1000S4	34 -1	0.53 -0.03	35 -3	8.5 +0.5	85.7 +0.1	close		+
Morel PRIMO 10	35 =	0.558 =	38 =	8 =	90 +4.4	close		+
Brax MATRIX 10.1	35.8 +0.8	0.53 -0.03	35.34 -2.66	12.5 +4.5	86.5 +0.9	close		+
Lavoce SSF102.40	38 +3	0.57 +0.01	42 +4	8.3 +0.3	87.6 +2	close	8 Ω vs 4 Ω: amp load changes	+
Polk Audio DB1040	35 =	0.55 -0.01	28.3 -9.7	7.5 -0.5	85 -0.6	close	Xmax 7.5 mm < 8 mm: lower excursion-limited SPL	+
Focal 27 WX	37.4 +2.4	0.555 -0.01	38.6 +0.6	7.3 -0.7	89.8 +4.2	close	8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 8 mm: lower excursion-limited SPL	+
LaVoce SSF102.40 8 Ohm	38 +3	0.571 +0.01	42 +4	7.7 -0.3	88.5 +2.9	close	8 Ω vs 4 Ω: amp load changes · Xmax 7.7 mm < 8 mm: lower excursion-limited SPL	+
Rockford Fosgate P1S4-10	30 -5	0.52 -0.04	40 +2	9 +1	84.2 -1.4	close		+
Rockford Fosgate P1S2-10	30 -5	0.52 -0.04	39.6 +1.6	9 +1	84 -1.6	close	2 Ω vs 4 Ω: amp load changes	+
Boston Acoustics G1104	29 -6	0.534 -0.03	39 +1	7.4 -0.6	87.1 +1.5	close	8 Ω vs 4 Ω: amp load changes · 200 W vs 300 W: lower power handling · Xmax 7.4 mm < 8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the PRIMO 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.