Jamo 20388

15" · 8 Ω · 100 W · 93.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	27 Hz
Qts	0.848
Qes	0.99
Qms	5.9
Vas	495.6 L
Sd	851 cm²
Xmax	6 mm
Re	5.81 Ω
Bl	8.4 T·m
Mms	71.2 g
Pe	100 W
Sensitivity	93.3 dB

Alignment hint

EBP	27 · 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
Jamo 20388 - 15	27 =	0.848 =	495 -0.6	6 =	93.3 =	close		+
Europsonic TS38/300D	28 +1	0.994 +0.15	382.6 -113	6 =	90.3 -3	usable		+
Supravox 400-2000EXC_05V	25 -2	1.011 +0.16	434 -61.6	5 -1	90.9 -2.4	usable	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
AE Speakers DIPOLE 15-D4	21.7 -5.3	0.938 +0.09	623 +127.4	9.4 +3.4	94.1 +0.8	usable	4 Ω vs 8 Ω: amp load changes	+
Visaton TIW400 DS 2x4 Ohms	21 -6	0.787 -0.06	422 -73.6	15.6 +9.6	91.9 -1.4	usable	4 Ω vs 8 Ω: amp load changes	+
Supravox 400-2000EXC_07V	25 -2	0.599 -0.25	444 -51.6	5 -1	93.3 =	usable	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
Altec 420A vp Daniel 2	27.6 +0.6	0.919 +0.07	413.4 -82.2	2.8 -3.2	93.1 -0.2	usable	25 W vs 100 W: lower power handling · Xmax 2.8 mm < 6 mm: lower excursion-limited SPL	+
AE Speakers LO15-D16	33.8 +6.8	0.823 -0.03	311 -184.6	7.9 +1.9	94.6 +1.3	usable		+
Europsonic TS30/250D	34 +7	1.067 +0.22	402.5 -93.1	5.4 -0.6	92.7 -0.6	usable	Xmax 5.4 mm < 6 mm: lower excursion-limited SPL	+
Europsonic HPC38/100	24.9 -2.1	0.66 -0.19	425.4 -70.2	4.3 -1.7	92 -1.3	usable	50 W vs 100 W: lower power handling · Xmax 4.3 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 20388 →

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.