5 « sig s-sj •tb- g 111, O i p – Altec Lansing 807-8A User Manual
Page 2
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ALTEC ^07-8A
808-8A
DESCRIPTION
Power Rating:
Frequency Response:
Pressure Sensitivity:
Impedance:
Voice Coil Diameter:
Application:
Protection:
Magnet Weight
Flux Density:
Dimensions:
Finish:
A^essories:
SPECIFICATIONS
MODEL 807-8A
Up to 30 watts rms (based on continuous oper
ation with white noise 500 Hz to 20,000 Hz
and with ALTEC model N501-8A or N801-8A
dividing network)
500 to 20,000 Hz
109.5 dB w/1 watt input measured
4‘
from
mouth of 30" horn over warble frequency range
500-2500
Hz
(Ref:
0.0002
dynes/cm^
for
1 watt input)
124.2 dB at 30 watts
8 ohms
1.75"
HF Driver louc^peaker for wide-range, 2-way
studio 'Playback' systems
N501-8A dividing network and 511A or 51 IB
horn for 500-Hz cro^ver; N801-8A dividing
network and 811В liorn for 800-Hz crossover.
13 oz
13,000 Gauss
4-1/2" Diameter
3-1/4" Deep
5 lbs, 11 oz
Black matte
MODEL 808-8A
Up to 30 watts rms (based on continuous oper
ation with white noise 500 Hz to 20,000 Hz
and with ALTEC model N501-8A or IMSOI-^A
dividing network)
500 to 20,000 Hz
111.7 dB w/1 watt input measured 4' from
mouth of 30" horn over warble frequency range
500-2500
Hz
(Ref:
0.0002
dvnes/cm2
for
1 watt input)
126.4 dB at 30 watts
8 ohms
1.75"
HF Driver loudspeaker for wide-range, 2-way
studio 'Playback' systems
N501-8A dividing network and 511A or 51 IB
horn for 500-Hz crossover; N801 ^A dividing
network and 81 IB horn for 800-Hz crossover.
1.2 lbs
15,250 Gauss
4-1/2" Diameter
3-11/16" Deep
511A, 51 IB, 81 IB sectoral horns*; N501-8A.
N801-8A dividing networks;
70.7V transformers.
*For multicellular horns, use ALTEC driver loudspeaker models 730, 288,290 or 291.
Black matte
511A,- 511B, 811B sectoral horns*
N801-8A dividing networks;
70.7V transformers.
N501-8A,
ARCHITECTS AND ENGINEERS SPECIFICATIONS
(FOR ALTEC 807-8A)
The high-frequency driver loudspeaker shall utilize a
diaphragm coupled to a voice coil that shall be edge-wound of
aluminum ribbon arxl that shall be 1-3/4" in diameter. The voice coil gap shall have a flux density of at least 13,000 Gauss, produced
by a magnet having a weight of 13 ounces. A machined phasing plug, which also serves as the pole piece, shall have two exponential
aodustic slots and shall be utilized to provide the proper phase relationship between the sound emanating from the center and edges
of the diaphragm and voice coil assembly, thus ensuring maximum high-frequency reproduction while maintaining a smooth overall
response. The entire diaphra^ ar>d voice coil assembly shall be field replaceable without requiring special tools or skills; this shall be
interpreted to mean that the loudspeaker shall incorporate self-centering dowels to ensure proper spacing and alignment of the dia
phragm and voice coil assembly.
The HF driver loudspeaker shall produce a sound pressure level of at least 109.5 dB with 1 watt input and 124.2 dB with 30 watts
input at a distance of 4 feet from the mouth of a 30" trumpet when a warble band of 500 to 25(X) Hz is used. Single frequency
measurements shall not be acceptable under this specification. The frequency response of the HF driver shall be uniform over the
range of (specify one):
500 to 20,000 Hz with the ALTEC 511A or 51 IB sectoral horn and N501-8A dividing network.
800 to 20.000 Hz with the ALTEC 81 IB sectcxal horn and N801-8A dividing network.
Any high-frequency driver loudspeaker not meeting all of the foregoing requirements shall not be acceptable under this specification.
The high-frequency driver loudspeaker shall be ALTEC Lansing model 807-8A.
(FOR ALTEC 808-8A)
The high-frequency driver loudspeaker shall utilize a
diaphragm coupled to a voice coil that shall be edge-wound of
aluminum ribbon and that shall be 1-3/4" in diameter. The voice coil gap shall have a flux density of at least 15,250 Gauss, produced
by a magnet having a weight of 1.2 pounds. A machined phasing plug, which also serves as the pole piece, shall have two exponential
acoustic slots and shall be utilized to provide the proper phase relationship between the sound emanating from the center and edges
of the diaphragm and voice coil ^sembly, thus ensuring maximum high-frequency reproduction while maintaining a smooth overall
response. The entire diaphragm and voice coil assembly shall be field replace^le without requiring special tools or skills; this shall be
interpreted to mean that the loudspeaker shall incorporate self-centering dowels to ensure proper spacing and alignment of the dia
phragm and voice coil assembly.
The HF driver loudspeaker shall produce a sound pressure level of at least 111.7 dB with 1 watt input and 126.4 dB with 30 watts in
put at a distance of 4 feet from the mouth of a 30" trumpet when a warble teind of 500 to 2500 Hz is used. Single frequency meas
urements shall not be acceptable under this specification. The frequency response of the HF driver shall be uniform over the range of
(specify one):
500 to 20,000 Hz with the ALTEC 511Aor511B sectoral horn and N501-8A dividing network.
800 to 20,000 Hz with the ALTEC 81 IB sectoral horn and N801-8A dividing network.
Any high-frequency driver loudspeaker not meeting all of the foregoing requirements shall not be acceptable under this specification.
The high-frequency driver loudspeaker shall be ALTEC Lansing model 806-8A.
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LITHO IN U.S.A. CP-119-5K
Specifications and components subject to change without
notice. Overall performance will be maintained or improved.
AL-1777