Technical Specifications
Power Rating (RMS): 7.5 watts continuous
Frequency Response: 250Hz to 14kHz
Impedance:
SPT5A — 25/70V
SP58A — 8 ohms
Sound Pressure Level: 105dB @ four feet on axis with 7.5 watt
input @ 1000Hz
Dispersion: 120º
Sensitivity as Microphone: -22dBm [Ref: 10 dynes/cm2]
Dimensions: 6" Dia. x 4" D
Weight:
SPT5A — 2 lbs.
SP58A — 1.25 lbs.
Finish: Textured mocha enamel
Impedance Selector Switch Settings: 25V @ 1, 0.62, 0.31watts
(SPT5A) 70V @ 7.5, 5, 2.5, 1.25, 0.65 watts
Sound Pressure Level in dB @ 1000Hz: Watts Feet on Axis
Input: 4 8 163264
7.5 — 105 99 93 87 81
5 — 103 97 9185 79
2.5 — 100 94 88 82 76
1.25 — 97 9185 79 73
.65 — 94 88 82 76 70
The loudspeaker shall be a Bogen Model ________
(specify SPT5A or SP58A), or approved equivalent,
reentrant type horn loudspeaker. The frequency
response shall be 250Hz to 14kHz. Rated power
output shall be 7.5 watts, RMS continuous.
Dispersion shall be 120º. Sound pressure level,
measured four feet on axis with 7.5-watt input @
1000Hz, shall be at least 105dB.
Use for SPT5A. The unit shall incorporate a five-
position weather-sealed switch, to allow matching
the loudspeaker to a 25V or 70V constant-voltage
line. Power handling capacity shall be adjustable at
70V to 7.5, 5, 2.5, 1.25, or 0.65 watts, and at 25V to
1, 0.62, or 0.31watts.
Use for SP58A. The unit shall have an impedance
of 8 ohms.
The loudspeakers shall have a weatherproof, all-
metal housing. An all-purpose mounting bracket
shall provide precise positioning in the vertical and
horizontal planes. Bracket and loudspeaker shall be
finished in textured mocha enamel.The loudspeak-
ers shall measure 6" Dia. by 4" D. Weight shall
be ________ (insert 2 lbs. for SPT5A, 1.25 lbs.
for SP58A).
Architect
and Engineer
Specifications
50 Spring Street, Ramsey, NJ 07446, U.S.A.
201-934-8500 FAX: 201-934-9832; www.bogen.com
