Dayton Audio APOLLO 12N

12" · 8 Ω · 400 W · 96.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	38 Hz
Qts	0.261
Qes	0.27
Qms	7.75
Vas	128.1 L
Sd	494.6 cm²
Xmax	6.8 mm
Re	7.5 Ω
Bl	17.6 T·m
Mms	47 g
Pe	400 W
Sensitivity	96.4 dB

Alignment hint

EBP	141 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 20.2 L

EBP > 100: favours a ported (bass-reflex) 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
Beyma SM112/N	38 =	0.27 +0.01	138 +9.9	7.3 +0.5	97.2 +0.8	close		+
AE Speakers TD12M	38.1 +0.1	0.25 -0.01	140 +11.9	6 -0.8	97.3 +0.9	close	Xmax 6 mm < 6.8 mm: lower excursion-limited SPL	+
Beyma 12LW30/N	38 =	0.287 +0.03	109 -19.1	7 +0.2	96.2 -0.2	close		+
McCauley B1240	38 =	0.286 +0.02	110 -18.1	6.5 -0.3	96.3 -0.1	close	Xmax 6.5 mm < 6.8 mm: lower excursion-limited SPL	+
RCF L 12P400K	34 -4	0.241 -0.02	130 +1.9	6 -0.8	96.3 -0.1	close	200 W vs 400 W: lower power handling · Xmax 6 mm < 6.8 mm: lower excursion-limited SPL	+
Beyma SM112/N v2021	40 +2	0.298 +0.04	117 -11.1	7 +0.2	96.9 +0.5	close		+
RCF L12P400K	33.7 -4.3	0.25 -0.01	130 +1.9	6 -0.8	94.7 -1.7	close	200 W vs 400 W: lower power handling · Xmax 6 mm < 6.8 mm: lower excursion-limited SPL	+
PHL Audio 4530	37 -1	0.314 +0.05	124 -4.1	6 -0.8	96.3 -0.1	close	300 W vs 400 W: lower power handling · Xmax 6 mm < 6.8 mm: lower excursion-limited SPL	+
Beyma 12CXA400FE	42 +4	0.251 -0.01	119 -9.1	6 -0.8	98.1 +1.7	close	Xmax 6 mm < 6.8 mm: lower excursion-limited SPL	+
Beyma SM112-N2	40 +2	0.298 +0.04	117.3 -10.8	5.9 -0.9	96.9 +0.5	close	250 W vs 400 W: lower power handling · Xmax 5.9 mm < 6.8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the APOLLO 12N →

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.