Conrad DS-100i

10" · 4 Ω · 100 W · 93.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	22.5 Hz
Qts	0.188
Qes	0.2
Qms	3.13
Vas	112.2 L
Sd	346 cm²
Xmax	1.5 mm
Re	3.56 Ω
Bl	13.7 T·m
Mms	74.9 g
Pe	100 W
Sensitivity	93.6 dB

Alignment hint

EBP	113 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 8.5 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
JBL LE111A	25 +2.5	0.175 -0.01	101.9 -10.3	4.8 +3.3	92.9 -0.7	usable	8 Ω vs 4 Ω: amp load changes · 75 W vs 100 W: lower power handling	+
JBL 2121	35 +12.5	0.193 +0.01	110.4 -1.8	1.5 =	96.4 +2.8	usable	8 Ω vs 4 Ω: amp load changes · 50 W vs 100 W: lower power handling	+
Focal 10C 012-DB	26.3 +3.8	0.238 +0.05	134.7 +22.5	2.5 +1	93.8 +0.2	usable	8 Ω vs 4 Ω: amp load changes	+
ATC SB75-234 LC	26 +3.5	0.224 +0.04	120 +7.8	5 +3.5	91.8 -1.8	usable	8 Ω vs 4 Ω: amp load changes · 75 W vs 100 W: lower power handling	+
Audax PR240Z2	25 +2.5	0.261 +0.07	112 -0.2	5 +3.5	94.1 +0.5	usable		+
Focal 10C 012DB	26.3 +3.8	0.247 +0.06	135 +22.8	2.5 +1	93.6 =	usable	8 Ω vs 4 Ω: amp load changes	+
ATC PA75-234 BLCR	27 +4.5	0.181 -0.01	79 -33.2	4 +2.5	92.3 -1.3	usable	8 Ω vs 4 Ω: amp load changes · 75 W vs 100 W: lower power handling	+
Fostex FW 250	23 +0.5	0.225 +0.04	150 +37.8	4.5 +3	91.8 -1.8	usable	8 Ω vs 4 Ω: amp load changes · 50 W vs 100 W: lower power handling	+
Audiotechnology 10C772510KAP	25 +2.5	0.24 +0.05	110 -2.2	8.6 +7.1	92.1 -1.5	usable	8 Ω vs 4 Ω: amp load changes	+
Klipsch K1089-AV	31 +8.5	0.216 +0.03	106.2 -6	4.4 +2.9	94.8 +1.2	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the DS-100i →

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.