PD PD 123ER v2024

12" · 8 Ω · 400 W · 97.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	55.9 Hz
Qts	0.293
Qes	0.3
Qms	13.03
Vas	54.5 L
Sd	530.9 cm²
Xmax	2.5 mm
Re	6.74 Ω
Bl	21.5 T·m
Mms	58.8 g
Pe	400 W
Sensitivity	97.7 dB

Alignment hint

EBP	186 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 11.3 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
Precision Devices PD 123ER v2024	55.9 =	0.293 =	54.5 =	2.5 =	97.7 =	close		+
Celestion NTR12-3018D	56.4 +0.5	0.295 =	51.8 -2.7	3.9 +1.4	97.9 +0.2	close		+
RCF LF 12G300	54 -1.9	0.285 -0.01	55 +0.5	4.6 +2.1	98.1 +0.4	close		+
Eminence PS12-200	56 +0.1	0.285 -0.01	61.7 +7.2	3 +0.5	98.5 +0.8	close	200 W vs 400 W: lower power handling	+
Fane Colossus 12MB	55 -0.9	0.286 -0.01	56 +1.5	5.5 +3	98 +0.3	close		+
Eminence PE 12 2008	56 +0.1	0.285 -0.01	61.9 +7.4	3 +0.5	98.5 +0.8	close	200 W vs 400 W: lower power handling	+
BMS 12C382	52 -3.9	0.285 -0.01	57 +2.5	4.5 +2	97.6 -0.1	close		+
Eminence DOUBLE-T 12	53 -2.9	0.295 =	63.7 +9.2	2.4 -0.1	98.5 +0.8	close	300 W vs 400 W: lower power handling · Xmax 2.4 mm < 2.5 mm: lower excursion-limited SPL	+
Fostex L 363 B	55 -0.9	0.33 +0.04	57 +2.5	2.9 +0.4	97 -0.7	close	150 W vs 400 W: lower power handling	+
B&C 12 FW 64	55 -0.9	0.293 =	64 +9.5	3.7 +1.2	99.1 +1.4	close	250 W vs 400 W: lower power handling	+

Compare the closest 3 against the PD 123ER v2024 →

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.