Beyma 122Nd

12" · 8 Ω · 200 W · 103.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	56 Hz
Qts	0.138
Qes	0.14
Qms	12
Vas	72 L
Sd	530 cm²
Xmax	2 mm
Re	5.2 Ω
Bl	24 T·m
Mms	44.2 g
Pe	200 W
Sensitivity	103.4 dB

Alignment hint

EBP	400 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 2.9 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
JBL E120	60 +4	0.172 +0.03	79.3 +7.3	2.2 +0.2	102.6 -0.8	usable	150 W vs 200 W: lower power handling	+
TAD TM-1201	52 -4	0.136 =	63 -9	1.3 -0.7	101.5 -1.9	usable	150 W vs 200 W: lower power handling · Xmax 1.3 mm < 2 mm: lower excursion-limited SPL	+
TAD TM-1201 H	52 -4	0.136 =	63 -9	1.3 -0.7	101.5 -1.9	usable	150 W vs 200 W: lower power handling · Xmax 1.3 mm < 2 mm: lower excursion-limited SPL	+
18 Sound 12ND610	46 -10	0.14 =	94.4 +22.4	3.5 +1.5	102 -1.4	usable		+
18 Sound 12MB1000	54 -2	0.18 +0.04	60 -12	2.5 +0.5	102 -1.4	usable		+
JBL 2202A	50 -6	0.171 +0.03	87.8 +15.8	2.1 +0.1	101.5 -1.9	usable	100 W vs 200 W: lower power handling	+
Beyma 12P80ND V2	50 -6	0.163 +0.02	65 -7	4.5 +2.5	100.7 -2.7	usable		+
JBL 2202H	50 -6	0.171 +0.03	87.8 +15.8	2.6 +0.6	101.5 -1.9	usable	150 W vs 200 W: lower power handling	+
RCF L 12P110K	44 -12	0.136 =	98 +26	3 +1	101.3 -2.1	usable		+
P.Audio SN-12B	48.4 -7.6	0.16 +0.02	68 -4	3.5 +1.5	98.6 -4.8	usable		+

Compare the closest 3 against the 122Nd →

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.