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F-121C/F-121CM
SPECIFICATIONS
Model Number F-121C
Enclosure
Bass-reflex type
Speaker
Full-range, 4.7" cone speaker
Nominal Impedance
Sensitivity
90dB (1W/1m)
Frequency Response 80-18,000Hz (-10dB) (70-18,000 Hz w/AC-120)
Power Handling
Continuous Pink Noise Input: 40W
Capacity
Continuous Program: 120W
Finish
Enclosure: Black
Front Grille: Off-white
Weight
5.6 Ibs.
Dimensions
Front Grille: 10.24" in diameter
Ceiling Hole: 8.58" in diameter
Ceiling Space: Over 6.3" max in height
Mountable ceiling tile thickness: .2"-1.4"
Model Number F-121 CM
Enclosure
Bass-reflex type
Speaker
Full-range, 4.7" cone speaker
Rated Input
100V taps at line: 20W (500 , 10W (1k
(Impedance)
5W (2k
, 3W (3.3k
70V: 20W (250
3W (1.7k
, 1W (5k
Sensitivity
90dB (1W/1m)
Frequency Response 80-18000Hz (-10dB) (70-18,000 Hz w/AC-120)
Finish
Enclosure: Black
Front Grille: Off-white
Weight
6.2 Ibs.
Dimensions
Front Grille: 10.24" in diameter
Ceiling Hole: 8.58" in diameter
Ceiling Space: Over 6.3" max in height
Mountable ceiling tile thickness: .2"-1.4"
APPEARANCE AND DIMENSIONAL DIAGRAM
*F-101C and F-121C transformer not included
F-121C/F121 CM POLAR RESPONSE
Uniform Directivity Ceiling Speaker
, 1W (10
, 10W
5W (1k
OVERLOAD PROTECTION
To prevent damage from excessive low frequencies, the
F121C has a built-in overload protection circuit. During oper-
ation, if the overload circuit senses excessive low frequency,
it will attenuate the low frequency output of the speaker.
Once activated, the protection circuit will reset in approxi-
mately 10 seconds after turning the system volume down to
prevent reoccurrence.
ARCHITECT'S AND ENGINEER'S
SPECIFICATIONS
The speaker shall be the compactly designed TOA bass-
reflex, wide-dispersion, ceiling mount speaker, the F121C at 8
ohms low impedance/F-121 CM with 70V/100V high imped-
ance line transformer. The speaker shall provide smooth fre-
quency response, high power handling capacity, and, due to
the unique diffuser incorporated into the grille, extremely wide
high frequency dispersion.
The F-121 C/F-121 CM shall have a ceiling mount assembly
incorporating a 4.7" full-range speaker. Sensitivity shall be
90dB (1W, 1m) with a frequency response of 80Hz to
18,000Hz (-10dB).
Power handling capacity for the F-121C/F-121CM 8
shall be 40W continuous pink noise or 120W continuous program.
The transformer taps on the F-121 C/F-121 CM shall be 20W,
10W, 5W ,3W and 1W. The F-121C also shall have a built-in
protective circuit that prevents low-mid frequency overload by
reducing only the low-mid frequency signals.
The enclosure shall be a tuned, ported, bass-reflex type mold-
ed from a flame-resistant polymer. It shall incorporate four
spring-loaded clips to facilitate easy installation of both the
enclosure and front grille, respectively. It shall include a 24"
safety cable with spring clip for easy anchoring to support
structure. It shall also be sized to accommodated mounting
within a separately supplied standard metal back can if
desired.
The 10.24" diameter ceiling grille/diffuser shall have a non-
conducting off-white finish to prevent discoloration or dust
build-up due to static.
The bass-reflex enclosure shall mount in ceiling tiles up to 1.4"
and shall not extend above the tile more than 6.3". The
assembly's weight shall not be more than 5.6 Ibs for the
F-121C or 6.2 Ibs. for the F-121 CM with a transformer.
F-121C/F121CM FREQUENCY RESPONSE
F-121C/F121CM FREQUENCY RESPONSE
u n i t
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