SB Acoustics SB34NRX75-6 vp fx

12" · 8 Ω · 200 W · 90.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	22.9 Hz
Qts	0.496
Qes	0.53
Qms	7.65
Vas	181.3 L
Sd	530.9 cm²
Xmax	11 mm
Re	4.5 Ω
Bl	11.3 T·m
Mms	105.6 g
Pe	200 W
Sensitivity	90.6 dB

Alignment hint

EBP	43 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 175.6 L

EBP < 50: favours a sealed (closed) 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
AE Speakers SBP12-8	23.6 +0.7	0.479 -0.02	160 -21.3	14 +3	89.5 -1.1	close		+
Ground Zero GZTW 12MK2 vp	22.5 -0.4	0.484 -0.01	148.6 -32.7	14.7 +3.7	89.9 -0.7	close		+
AE Speakers IB12AU-4	24 +1.1	0.511 +0.02	160 -21.3	15.9 +4.9	92.4 +1.8	close	4 Ω vs 8 Ω: amp load changes	+
Peerless XXLS308 SWR 51	21.5 -1.4	0.448 -0.05	162.5 -18.8	11.5 +0.5	88.7 -1.9	close		+
JL Audio 12W1-8	24 +1.1	0.49 -0.01	177.29 -4.01	7.874 -3.13	88.6 -2	close	125 W vs 200 W: lower power handling · Xmax 7.874 mm < 11 mm: lower excursion-limited SPL	+
NHT 1259	19 -3.9	0.461 -0.03	190 +8.7	12 +1	89.4 -1.2	close	4 Ω vs 8 Ω: amp load changes	+
JL Audio 12W1-4	22.3 -0.6	0.487 -0.01	176.214 -5.09	7.874 -3.13	87.6 -3	close	4 Ω vs 8 Ω: amp load changes · 125 W vs 200 W: lower power handling · Xmax 7.874 mm < 11 mm: lower excursion-limited SPL	+
Rockford Fosgate R1S4-12	22 -0.9	0.493 =	197.2 +15.9	7 -4	91.5 +0.9	usable	4 Ω vs 8 Ω: amp load changes · Xmax 7 mm < 11 mm: lower excursion-limited SPL	+
SB Acoustics SB34NRX75-6 vp	22.2 -0.7	0.444 -0.05	240 +58.7	11 =	92 +1.4	usable		+
NHT MAD1259	20.1 -2.8	0.576 +0.08	195.1 +13.8	13 +2	89.3 -1.3	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the SB34NRX75-6 vp fx →

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.