ESC
1221A (Rev. 2)

1221A (Rev. 2)

BrandAltec, Altec Lansing
FunctionSpeaker
Produced1975
CountryUnited States
Form FactorFloorstanding
Signal PathPassive Hardware
Dimensions71.1 × 55.9 × 61 cm (W × H × D)
Weight64lbs (Net), 70lbs (Shipped)
Frequency Response70Hz-15kHz
TrebleHorn (Altec 32B, Altec 808-8A)
Midrange/Bass12" Paper Cone (Altec 33310 (417-8H II))
Sensitivity (500Hz-3kHz)97dB/W/4'
Sensitivity (EIA)50dB
Impedance (Nominal)8Ω
Crossover Frequency1.5kHz (Altec 33272)
Crossover Slope12dB/Oct (Second Order)
Dispersion (Horizontal)90°
Dispersion (Vertical)90°
Maximum Output (4', 500Hz-3kHz50W)114dB
Power Handling50W
Power Handling (Peak)100W (Attenuator: 5)
Enclosure TypeBass Reflex
Enclosure Construction0.75" Plywood
FinishBlack Leather-grained Vinyl
Connections
  • Input · 1/4" Phone Jack (6.35mm)
NotesMinor revisions to drivers and horn