Peavey 1505-8 KADT

15" · 8 Ω · 350 W · 100.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	50.8 Hz
Qts	0.35
Qes	0.367
Qms	7.6
Vas	143.5 L
Sd	840 cm²
Xmax	0.9 mm
Re	5.23 Ω
Bl	17.5 T·m
Mms	67.7 g
Pe	350 W
Sensitivity	100.9 dB

Alignment hint

EBP	138 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 46.6 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
Peavey SP-15825	50.1 -0.7	0.326 -0.02	132.4 -11.1	3.1 +2.2	100.4 -0.5	close	200 W vs 350 W: lower power handling	+
RCF L 15P100AC	53 +2.2	0.322 -0.03	149 +5.5	3 +2.1	101.4 +0.5	close	150 W vs 350 W: lower power handling	+
Peavey 1505 KADT	44.3 -6.5	0.354 =	187 +43.5	0.9 =	100.2 -0.7	close		+
RCF CX15N251	55 +4.2	0.354 =	136 -7.5	4.1 +3.2	101.7 +0.8	close		+
Oberton 15LX400	48.8 -2	0.337 -0.01	140 -3.5	5.2 +4.3	100.2 -0.7	close		+
Celestion BN15-400S8	44.8 -6	0.355 +0.01	141.3 -2.2	2 +1.1	98.1 -2.8	close		+
JBL 2035H	48 -2.8	0.336 -0.01	140.5 -3	4.9 +4	101.5 +0.6	close	4 Ω vs 8 Ω: amp load changes	+
Audax PR38EX100VST vp 1mm	47.7 -3.1	0.372 +0.02	117.9 -25.6	1 +0.1	98.6 -2.3	close	250 W vs 350 W: lower power handling	+
Oberton 15XL400	48.78 -2.02	0.337 -0.01	140 -3.5	5.25 +4.35	102 +1.1	usable		+
Monacor SP-38A/300PRO	50 -0.8	0.389 +0.04	135 -8.5	2.5 +1.6	99.1 -1.8	usable		+

Compare the closest 3 against the 1505-8 KADT →

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.