Audio Database


This speaker system is the first of Altec's new dynamic force series.

38 cm cone type woofer 411-8A is mounted in the low range.
In the high-frequency range, a horn type unit using a driver 808 to 8 a and a horn 511B is mounted.

N-501-8A is used for the network.

The enclosure is sealed, and the front is equipped with a grating grill separated from the Miomote.
The exterior has a walnut finish.

The 2873A incorporates a 873A electronic crossover bi-amplifier on the back panel of the 770A and is used by connecting the output of the preamplifier with a pin jack.

Model Rating
Method 2-Way, 2-Speaker, Sealed Type, Floor Type
Format 873A 2873A
Units Used Low band 38 cm cone type (411 to 8 a) 38 cm cone type (411 to 8 a)
High pass Horn Type (808-8A + 511B) Horn Type (808-8A + 511B)
Network N501-8A -
Amp - 770A
Impedance 8 Ω -
Frequency characteristic 20 Hz to 20 kHz
Allowable input 60W -
Crossover frequency 500Hz 500Hz(12dBoct)
Input sensitivity - 0.5Vrms
Amplifier output - Low band : 60 wrms
High pass : 30 Wrms
Hum noise level - -80dB or less
Gain control - 26dB
External dimensions Width 980x Height 760x Depth 610 mm
Weight 67.6kg -