Altec 515-8LFE

15" · 8 Ω · 125 W · 99.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	25.7 Hz
Qts	0.203
Qes	0.22
Qms	2.55
Vas	547.7 L
Sd	823.5 cm²
Xmax	4.3 mm
Re	5.5 Ω
Bl	16.4 T·m
Mms	66.6 g
Pe	125 W
Sensitivity	99.9 dB

Alignment hint

EBP	117 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 49.2 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
Fluxmag 1505	25.2 -0.5	0.214 +0.01	571 +23.3	5 +0.7	99.6 -0.3	close		+
Supravox 400 EXC Ag 14V	25.4 -0.3	0.23 +0.03	554.5 +6.8	5 +0.7	99.1 -0.8	close		+
Fostex L 470	25 -0.7	0.203 =	457 -90.7	4.2 -0.1	98 -1.9	close	Xmax 4.2 mm < 4.3 mm: lower excursion-limited SPL	+
Supravox 400-2000EXC_15V	25 -0.7	0.196 -0.01	429 -118.7	4.9 +0.6	98.1 -1.8	close		+
Supravox 400 EXC Ag 13V	25.3 -0.4	0.253 +0.05	555.6 +7.9	5 +0.7	98.7 -1.2	close		+
Beyma 15B42	24.2 -1.5	0.185 -0.02	480.9 -66.8	4 -0.3	98.8 -1.1	close	Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
Altec 416-8B v1	23.6 -2.1	0.22 +0.02	577 +29.3	3.8 -0.5	98 -1.9	close	Xmax 3.8 mm < 4.3 mm: lower excursion-limited SPL	+
Supravox 400-2000EXC_14V	25 -0.7	0.214 +0.01	439 -108.7	5 +0.7	97.8 -2.1	close		+
Alpine 6015	22 -3.7	0.197 -0.01	453 -94.7	4.1 -0.2	100.3 +0.4	close	4 Ω vs 8 Ω: amp load changes · Xmax 4.1 mm < 4.3 mm: lower excursion-limited SPL	+
Altec 604-2	27.1 +1.4	0.213 +0.01	446 -101.7	3.8 -0.5	98.6 -1.3	close	Xmax 3.8 mm < 4.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 515-8LFE →

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.