Peavey 1504-4DT

15" · 4 Ω · 200 W · 101.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	31.3 Hz
Qts	0.304
Qes	0.32
Qms	6.2
Vas	385 L
Sd	800 cm²
Xmax	3 mm
Re	3.5 Ω
Bl	11.4 T·m
Mms	60.3 g
Pe	200 W
Sensitivity	101.2 dB

Alignment hint

EBP	98 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 87.3 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
ATC SB100-375SC	30 -1.3	0.322 +0.02	380 -5	4.2 +1.2	98 -3.2	close	8 Ω vs 4 Ω: amp load changes · 100 W vs 200 W: lower power handling	+
Eminence KAPPA-15A	33 +1.7	0.32 +0.02	321.3 -63.7	4 +1	100.5 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
Eminence GAMMA 15	33 +1.7	0.301 =	314.1 -70.9	3 =	98.7 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
Eminence GAMMA 15 A2	33 +1.7	0.301 =	314.1 -70.9	3 =	98.7 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
Monacor SP-385PAX	30 -1.3	0.285 -0.02	365 -20	4.5 +1.5	98 -3.2	close	8 Ω vs 4 Ω: amp load changes	+
Sphynx SP-W15-SONO	38 +6.7	0.331 +0.03	376 -9	4 +1	100.9 -0.3	close	8 Ω vs 4 Ω: amp load changes · 150 W vs 200 W: lower power handling	+
Great Plains Audio 604-8H-II	30.9 -0.4	0.262 -0.04	463 +78	3.8 +0.8	101.2 =	close	8 Ω vs 4 Ω: amp load changes · 100 W vs 200 W: lower power handling	+
Beyma 15XA38ND	33 +1.7	0.288 -0.02	359 -26	6 +3	99 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Supravox 400 GMF PRO	32 +0.7	0.263 -0.04	370 -15	4.8 +1.8	99.4 -1.8	close	8 Ω vs 4 Ω: amp load changes · 120 W vs 200 W: lower power handling	+
Davis 39RPA15	31 -0.3	0.27 -0.03	340 -45	4 +1	99.3 -1.9	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 1504-4DT →

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.