Toa SF-60 Operating Instructions

PROFESSIONAL SOUND SYSTEM
Speaker System

GENERAL DESCRIPTION

The TOA SF-60 is a 3-way speaker system, a bass reflex
enclosure to be driven
amplifier), designed as permanent installation for profes-
sional applications in high-level sound reinforcement en-
vironments where high-efficiency and faithful reproduction
are required such as discos and in live sound reinforce-
ment applications.
The SF-60 reproduces transcient response characteristics
in the low frequency range using a larger magnet than
used for the 30cm (12") woofer assembled in the SF-30
speaker system.
The driver unit for the SF-60 is used the HFD-651 high
power driver unit improved for the system, and LE Series
Constant directivity (CD) horn ensures a uniform sound
dispersion pattern (90° horizontal by 40° vertical).
The 2-way multi-amplifier driving system is adopted allow-
ing each speaker unit to provide maximum performance,
and further the SF-60 is built in the passive circuit to cor-
rect time, phase and frequency response for obtaining the
best frequency response when the multi-amplifier is em-
ployed.
The passive type crossover between the driver and the
tweeter is adopted and its crossover frequency is set to
higher 10kHz. A high-tech crossover network of — 18dB/
octave slope at the tweeter is designed enabling to endure
high power input.
The tweeter level can be set with the High frequency level
control.
The fixing holes for easy ceiling suspension are provided
on top, bottom and both sides of an enclosure, and four
corners inside the enclosure are highly reinforced with L
type metals with W3/8" nuts.
by 2-way multi-amplifier (bi-
The baffle fixed the horn and the tweeter can be turned to
either left-hand or right-hand direction to provide wide
directivity to the horizontal direction where the SF-60 is in-
stalled at either left-hand or right-hand direction.
Recessed type earring handles are provided on both sides
of the enclosure for installation or transportation, and the
enclosure is finished in gray, shock-resistant polyester
painting.
FEATURES
1. 3-way vented system driven by 2-way multi-amplifier
(bi-amplifier).
2. High power capacity of 120 watts continuous pink
noise for low frequency and 80 watts for Mid/High fre-
quency.
3. 30cm (12") woofer using a larger magnet.
4. HFD-651 type high power driver with LE Series Con-
stant directivity (CD) horn (90° horizontal 40° vertical).
5. Exponential horn tweeter.
6. Built in the passive circuit to correct time, phase and
frequency response for multi-amplifier driving.
7. Passive crossover between the driver and the tweeter
set to higher 10kHz.
8. High frequency level control for the tweeter.
9. Fixing nuts for ceiling suspension provided on top,
bottom and both sides of the enclosure.
10. The baffle fixed the horn and the tweeter can be
turned.
11. Recessed type carrying handles provided on both
sides of the enclosure.
12. Removable punched metal front grill.
Operating Instructions
Model SF-60