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Altec 421-16LF

15" · 16 Ω · 150 W · 96.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size15"
Impedance16 Ω
Fs27 Hz
Qts0.246
Qes0.27
Qms2.79
Vas600.3 L
Sd825.8 cm²
Xmax1.3 mm
Re11.5 Ω
Bl20 T·m
Mms55.3 g
Pe150 W
Sensitivity96.8 dB

Alignment hint

EBP100 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 82.7 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Altec 619-8A24.6 -2.40.241 -0.01621.3 +211.3 =98.6 +1.8close8 Ω vs 16 Ω: amp load changes · 75 W vs 150 W: lower power handling+
Altec 421-8LF27.5 +0.50.254 +0.01576 -24.31.3 =99.9 +3.1close8 Ω vs 16 Ω: amp load changes+
Altec 604-8G25.8 -1.20.252 +0.01624.4 +24.13.8 +2.598.7 +1.9close8 Ω vs 16 Ω: amp load changes · 100 W vs 150 W: lower power handling+
Altec 421-8H-II vp126.9 -0.10.272 +0.03479.3 -1211.3 =98.6 +1.8close8 Ω vs 16 Ω: amp load changes+
Audio Nirvana CLASSIC 15 FERRITE24.7 -2.30.271 +0.03551.3 -491.1 -0.297.3 +0.5close8 Ω vs 16 Ω: amp load changes · 80 W vs 150 W: lower power handling · Xmax 1.1 mm < 1.3 mm: lower excursion-limited SPL+
Fluxmag 150425.5 -1.50.26 +0.01530 -70.34 +2.797 +0.2close8 Ω vs 16 Ω: amp load changes+
Altec 421-8H-II vp225.6 -1.40.28 +0.03501.7 -98.61.3 =98.2 +1.4usable8 Ω vs 16 Ω: amp load changes+
Altec 416-8C23.9 -3.10.249 =643.9 +43.63.8 +2.598.2 +1.4usable8 Ω vs 16 Ω: amp load changes+
Audio Dynamique AD380PM10025.5 -1.50.26 +0.01530 -70.35 +3.797 +0.2usable8 Ω vs 16 Ω: amp load changes+
Supravox 400 EXC Ag 13V25.3 -1.70.253 +0.01555.6 -44.75 +3.798.7 +1.9usable8 Ω vs 16 Ω: amp load changes+

Compare the closest 3 against the 421-16LF →

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.