Beyma 21SW1600ND

21.5" · 8 Ω · 1600 W · 97.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	21.5"
Impedance	8 Ω
Fs	33 Hz
Qts	0.382
Qes	0.4
Qms	8.37
Vas	268 L
Sd	1734 cm²
Xmax	8.9 mm
Re	5.3 Ω
Bl	31.7 T·m
Mms	365.8 g
Pe	1600 W
Sensitivity	97.6 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 110.4 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
B&C 21 SW 115	32.5 -0.5	0.404 +0.02	268.7 +0.7	9.9 +1	99.2 +1.6	close	4 Ω vs 8 Ω: amp load changes	+
Ciare NDC 21-5	32.2 -0.8	0.344 -0.04	270.8 +2.8	8.8 -0.1	97.2 -0.4	close	Xmax 8.8 mm < 8.9 mm: lower excursion-limited SPL	+
B&C 21 SW 115 v2015	33 =	0.353 -0.03	278 +10	9.3 +0.4	100.6 +3	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 21L50	33 =	0.434 +0.05	300 +32	7.9 -1	97 -0.6	close	1000 W vs 1600 W: lower power handling · Xmax 7.9 mm < 8.9 mm: lower excursion-limited SPL	+
LaVoce SAF214.50 vp	30 -3	0.401 +0.02	311 +43	11.6 +2.7	96.4 -1.2	close		+
LaVoce SAF214.50	30 -3	0.435 +0.05	267 -1	11.6 +2.7	95.6 -2	close		+
SB Audience NERO-21SW1100D	32 -1	0.339 -0.04	312.6 +44.6	8.1 -0.8	98.6 +1	close	1100 W vs 1600 W: lower power handling · Xmax 8.1 mm < 8.9 mm: lower excursion-limited SPL	+
MC Kenzie FRL-21/1200-LF	30 -3	0.378 =	374 +106	9.5 +0.6	98 +0.4	close	1200 W vs 1600 W: lower power handling	+
RCF LF 21N401	30 -3	0.378 =	374 +106	10.6 +1.7	98 +0.4	usable		+
18 Sound 21NLW9000	29 -4	0.347 -0.04	304 +36	10.7 +1.8	96.4 -1.2	usable		+

Compare the closest 3 against the 21SW1600ND →

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.