Reckhorn D-250

10" · 4 Ω · 150 W · 88.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	22 Hz
Qts	0.34
Qes	0.378
Qms	3.415
Vas	71.4 L
Sd	330 cm²
Xmax	8.2 mm
Re	3.6 Ω
Bl	12.1 T·m
Mms	111.9 g
Pe	150 W
Sensitivity	88.5 dB

Alignment hint

EBP	58 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 21.5 L

EBP 50-100: works in either a sealed or ported 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
Volt B2549	24 +2	0.321 -0.02	74 +2.6	8.3 +0.1	87.6 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
Volt B2550	24 +2	0.321 -0.02	74 +2.6	8.3 +0.1	87.6 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
Image Dynamics IDQ10DQV3	25.5 +3.5	0.384 +0.04	71 -0.4	9 +0.8	88.9 +0.4	close	8 Ω vs 4 Ω: amp load changes	+
Volt RV2550	28 +6	0.331 -0.01	71.8 +0.4	9.1 +0.9	89.5 +1	close	8 Ω vs 4 Ω: amp load changes	+
Vifa NE-265W-04	23 +1	0.294 -0.05	72.8 +1.4	8.9 +0.7	91.1 +2.6	close		+
SB Acoustics SB29SWNRX-S75-6	20 -2	0.315 -0.03	66 -5.4	10 +1.8	86.5 -2	close	8 Ω vs 4 Ω: amp load changes	+
STX W.27.500.8.FCX	25 +3	0.352 +0.01	59 -12.4	9.6 +1.4	87.6 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
Peerless NE265W-04	23.3 +1.3	0.294 -0.05	72.8 +1.4	8.8 +0.6	91.3 +2.8	close		+
MTX Audio BG104A	26 +4	0.359 +0.02	72.8 +1.4	9.7 +1.5	91.1 +2.6	close		+
Purifi Audio PTT10.0X08-NAB-02	22 =	0.393 +0.05	81 +9.6	8.9 +0.7	86.1 -2.4	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the D-250 →

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.