Monacor SP-18/1000HP

18" · 8 Ω · 1000 W · 98.8 dB

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	35 Hz
Qts	0.282
Qes	0.29
Qms	9.74
Vas	219 L
Sd	1166 cm²
Xmax	7.9 mm
Re	5.4 Ω
Bl	27.1 T·m
Mms	179.9 g
Pe	1000 W
Sensitivity	98.8 dB

Alignment hint

EBP	121 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 41.4 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
Faital PRO W18N8-1000	35 =	0.273 -0.01	211.8 -7.2	7.8 -0.1	98.8 =	close	Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+
PD PD 185N002	36 +1	0.297 +0.02	226 +7	7.8 -0.1	98.7 -0.1	close	Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+
Precision Devices PD 185N002	36 +1	0.297 +0.02	226 +7	7.8 -0.1	98.7 -0.1	close	Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+
Precision Devices PD188	37.409 +2.41	0.28 =	224.419 +5.42	9.5 +1.6	98.5 -0.3	close	600 W vs 1000 W: lower power handling	+
Oberton 18FBR700	35.56 +0.56	0.271 -0.01	231.3 +12.3	8 +0.1	98 -0.8	close	700 W vs 1000 W: lower power handling	+
PHL Audio 7321ND	33 -2	0.278 =	230 +11	8.5 +0.6	98.3 -0.5	close		+
PHL Audio 7010	35 =	0.288 +0.01	260 +41	7.7 -0.2	99.1 +0.3	close	Xmax 7.7 mm < 7.9 mm: lower excursion-limited SPL	+
PHL Audio 7070	35 =	0.288 +0.01	260 +41	7.7 -0.2	99.1 +0.3	close	Xmax 7.7 mm < 7.9 mm: lower excursion-limited SPL	+
Faital PRO 18HP1022	35 =	0.3 +0.02	204.9 -14.1	9.5 +1.6	98 -0.8	close		+
RCF L 18P300 4 Ohms	34 -1	0.305 +0.02	213 -6	7.8 -0.1	99.9 +1.1	close	4 Ω vs 8 Ω: amp load changes · Xmax 7.8 mm < 7.9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SP-18/1000HP →

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.