Monacor SP-300PA

12" · 8 Ω · 175 W · 95.3 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	40 Hz
Qts	0.435
Qes	0.52
Qms	2.65
Vas	150 L
Sd	514 cm²
Xmax	3.3 mm
Re	6.9 Ω
Bl	11.4 T·m
Mms	39.1 g
Pe	175 W
Sensitivity	95.3 dB

Alignment hint

EBP	77 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 91.3 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
Klipsch K28E	35.1 -4.9	0.441 +0.01	152.7 +2.7	4 +0.7	96.5 +1.2	close	4 Ω vs 8 Ω: amp load changes · 100 W vs 175 W: lower power handling	+
Tannoy 3149R	38 -2	0.436 =	138 -12	2.6 -0.7	95.2 -0.1	close	80 W vs 175 W: lower power handling · Xmax 2.6 mm < 3.3 mm: lower excursion-limited SPL	+
LaVoce LBASS12-15	38 -2	0.48 +0.04	160.93 +10.93	4.7 +1.4	95.5 +0.2	close	100 W vs 175 W: lower power handling	+
Conrad PA 12	42.9 +2.9	0.462 +0.03	129.2 -20.8	4 +0.7	95.2 -0.1	close		+
Hyper Phase CM12	40 =	0.372 -0.06	135 -15	3.5 +0.2	96.3 +1	close	100 W vs 175 W: lower power handling	+
Davis KIT ALBEDO	37.5 -2.5	0.459 +0.02	166 +16	5 +1.7	96.5 +1.2	close		+
Philips AD12202/M8	45.6 +5.6	0.419 -0.02	138 -12	4 +0.7	96.8 +1.5	close	100 W vs 175 W: lower power handling	+
Eminence BETA 12CX	43 +3	0.474 +0.04	161 +11	3.5 +0.2	97.5 +2.2	close		+
Eminence DELTALITE II 2512 v2	37 -3	0.386 -0.05	147 -3	4.9 +1.6	96.3 +1	close		+
Supravox 285 GMF vp5	35 -5	0.372 -0.06	150 =	4 +0.7	95.4 +0.1	close	70 W vs 175 W: lower power handling	+

Compare the closest 3 against the SP-300PA →

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.