MAG Audio M 1805

18" · 8 Ω · 1200 W · 96.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	37.5 Hz
Qts	0.357
Qes	0.367
Qms	13.2
Vas	138.5 L
Sd	1244 cm²
Xmax	7.1 mm
Re	5.35 Ω
Bl	31.1 T·m
Mms	282.1 g
Pe	1200 W
Sensitivity	96.7 dB

Alignment hint

EBP	102 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 47.4 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
B&C 18 PZB 46	37 -0.5	0.374 +0.02	155 +16.5	6.5 -0.6	96.8 +0.1	close	700 W vs 1200 W: lower power handling · Xmax 6.5 mm < 7.1 mm: lower excursion-limited SPL	+
LaVoce SAN184.02	38 +0.5	0.406 +0.05	150 +11.5	7.9 +0.8	96.8 +0.1	close		+
18 Sound 18LW2500	34 -3.5	0.335 -0.02	135 -3.5	9.1 +2	96 -0.7	close		+
B&C 18SW100	36 -1.5	0.36 =	160 +21.5	12.5 +5.4	96 -0.7	close	4 Ω vs 8 Ω: amp load changes	+
LaVoce SAF184.02	38 +0.5	0.422 +0.07	150 +11.5	8.1 +1	96.9 +0.2	close		+
Ciare PW 465 ND	37 -0.5	0.39 +0.03	141.16 +2.66	11.5 +4.4	94.4 -2.3	close		+
B&C 18PZW100	37 -0.5	0.36 =	186 +47.5	8 +0.9	97.6 +0.9	close		+
PD PD 1852	40 +2.5	0.33 -0.03	129.1 -9.4	6.2 -0.9	97.2 +0.5	close	Xmax 6.2 mm < 7.1 mm: lower excursion-limited SPL	+
Precision Devices PD 1852	40 +2.5	0.33 -0.03	129.1 -9.4	6.2 -0.9	97.2 +0.5	close	Xmax 6.2 mm < 7.1 mm: lower excursion-limited SPL	+
Celestion CF18VJD	34.3 -3.2	0.336 -0.02	150.6 +12.1	9 +1.9	95.5 -1.2	close		+

Compare the closest 3 against the M 1805 →

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.