18 Sound 15W700

15" · 8 Ω · 450 W · 99 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38 Hz
Qts	0.3
Qes	0.33
Qms	3.8
Vas	217 L
Sd	850 cm²
Xmax	6.5 mm
Re	5.7 Ω
Bl	18.4 T·m
Mms	80 g
Pe	450 W
Sensitivity	99 dB

Alignment hint

EBP	115 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 47.6 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
Beyma 15WR400	38 =	0.308 +0.01	214 -3	6 -0.5	99.7 +0.7	close	Xmax 6 mm < 6.5 mm: lower excursion-limited SPL	+
Fane FC-153F01	40 +2	0.305 +0.01	220 +3	6.6 +0.1	100 +1	close		+
Beyma 15XA38Nd v2020	38 =	0.296 =	238 +21	6 -0.5	99 =	close	350 W vs 450 W: lower power handling · Xmax 6 mm < 6.5 mm: lower excursion-limited SPL	+
Beyma 15"WR400	36 -2	0.3 =	236 +19	6.3 -0.2	99 =	close	Xmax 6.3 mm < 6.5 mm: lower excursion-limited SPL	+
Beyma 15WR400 v2020	36 -2	0.299 =	236 +19	6.3 -0.2	99 =	close	Xmax 6.3 mm < 6.5 mm: lower excursion-limited SPL	+
18 Sound 15ND830	39 +1	0.32 +0.02	213 -4	6.5 =	98 -1	close		+
18 Sound 15NMB420	42 +4	0.29 -0.01	225 +8	6.5 =	99 =	close		+
Monacor SP-15/500FH	35 -3	0.31 +0.01	218 +1	7.8 +1.3	98.6 -0.4	close		+
Eminence Kappa Pro-15LF	35 -3	0.3 =	198.8 -18.2	6.7 +0.2	97.8 -1.2	close		+
Beyma 15WRS400	38 =	0.337 +0.04	205.4 -11.6	6.3 -0.2	98.6 -0.4	close	Xmax 6.3 mm < 6.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 15W700 →

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.