A real problem solver for unique acoustic conditions, the SF1 is a two-way loudspeaker design housing two 8-inch low frequency drivers and a single 1-inch-high frequency compression driver. What helps set this speaker apart is its asymmetrical vertical dispersion, which allows for extremely even coverage.

Driver placement within the horn, in unison with a synergy crossover network, allows for proper phase alignment between frequency bands. This permits the physically separated bands to combine and emerge from the horn in synchrony, greatly reducing off axis distortions in frequency response while also allowing for high amounts of clarity at great distances. Furthermore, out of band harmonic distortion is limited due to the use of acoustic low pass filters. It provides even coverage front to back and nearly 180 degrees wide

Product Specifications

Coverage Pattern
160 horizontal
60 vertical
Operating Frequency Range
37 Hz – 14.7 kHz +/- 3dB
31 Hz – 18 kHz – 10dB
Continuous Output
113 dB SPL
Peak Output
119 dB SPL
89 dB SPL (2.83 Volts into rated Z, at 1 meter) Measured in whole space
Driver Complement
Low/Mid 2 x 8″
High 1 x 1″
25″H x 12″W x 38″D
75 Ibs
Rated Impedance
4 ohms
Power Rating
500 Watts cont., 2000 Watts peak
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Tom Danley’s patented Synergy Horn™ fundamentally changed the audio business.
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