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Single pringle looking to mingle. Has a bit of character, but the throat and mating surface are right and tight.

RESTORATIONS

SPECS

Distribution Pattern 90°H x 40°V

Lowest Recommended Crossover Frequency 500 Hz, 511b (1200 Hz when used with 902-8A or 902-16A drivers)

Pressure Sensitivity Measured on axis in the far (free) field with 1 watt input of band limited pink noise from 500-3000 Hz and calculated to 4' equivalent (Ref.: O dB= 0.0002dyne/cm2)

Compatible drivers 902-8A / 902-8T / 902-16A / 908-8A / 731B (limited frequency range)

Dimensions 10.625"H x 23.625"W x 18.5"D

Weight 17.75 lbs.

LINER NOTES

ALTEC 511b and 811b Sectoral Horns are designed for the mid or high-frequency section of two-way or three-way sound systems. The 511b and 811b differ only in cutoff frequency and size. Exponential expansion an

Horns

Vintage Altec 511B // Horn