Technysound TS45/500D vp Gils

18" · 8 Ω · 250 W · 91.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	28.2 Hz
Qts	0.757
Qes	0.9
Qms	4.77
Vas	341.8 L
Sd	1170.2 cm²
Xmax	4 mm
Re	7.6 Ω
Bl	16.4 T·m
Mms	178.9 g
Pe	250 W
Sensitivity	91.5 dB

Alignment hint

EBP	31 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
Raveland WHX 488	28 -0.2	0.978 +0.22	355 +13.2	4 =	89.7 -1.8	usable	16 Ω vs 8 Ω: amp load changes · 150 W vs 250 W: lower power handling	+
Technysound TS45/500D	26.7 -1.5	0.683 -0.07	492 +150.2	4 =	93 +1.5	usable		+
Selenium WPU 1805-X	35 +6.8	0.7 -0.06	293 -48.8	6.3 +2.3	94.2 +2.7	usable		+
Selenium WPU1805-X	35 +6.8	0.706 -0.05	293 -48.8	6.3 +2.3	95.4 +3.9	usable		+
Lautsprecher Technik MHB18 vp	33.8 +5.6	1.045 +0.29	327.9 -13.9	6.1 +2.1	92.6 +1.1	usable		+
FI Audio IB318-SINGLE2	22.3 -5.9	0.652 -0.1	381 +39.2	12.3 +8.3	93.4 +1.9	usable	4 Ω vs 8 Ω: amp load changes	+
Fane 18-500	33 +4.8	0.563 -0.19	346 +4.2	6.3 +2.3	96.9 +5.4	usable		+
Fane SOVEREIGN 18-500	33 +4.8	0.563 -0.19	346 +4.2	6.3 +2.3	96.9 +5.4	usable		+
SB Audience BIANCO-18SW500	30 +1.8	0.516 -0.24	335 -6.8	9.2 +5.2	95.8 +4.3	usable		+
DAS Audio P-18	36 +7.8	0.583 -0.17	314 -27.8	4.5 +0.5	96.3 +4.8	usable		+

Compare the closest 3 against the TS45/500D vp Gils →

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.