Electro-Voice 920-8B User manual

920-8B
12”Two-Way,
Full-Range
Transducer
General Description:
The 920-8B loudspeaker system is a two-way
loudspeaker with a 12.0-in. (30.5 cm) low frequency
cone and high temperature voice-coil assembly
coaxially mounted with a wide-dispersion dome
radiator tweeter. The 920-8B utilizes a dual-section
crossover network, centered at 2500 Hz that provides
12 dB/Octave of attenuation for each element outside
its operating range. Clear, intelligible speech and fine
music reproduction are ensured by the extended 90
Hz to 18 kHz frequency response.
Mounting holes are provided on the rear of the woofer
magnet to mount a transformer to operate the
loudspeaker from 70.7/100V distribution lines. The
920-8B’sframealso allowsthe loudspeakerto befront-
or rear-mounted.
The 920-8B is equipped with a 4 pin phoenix-style
connector which enables easy pass-through wiring of
up to 12 gauge wire. This allows for quick and secure
hookups and long-term reliable operation.
The 920-8B is the ideal loudspeaker when a
high-efficiency, wide-dispersion, easily mounted, full
range loudspeaker is required for in-ceiling or in-wall
installations.
Key Features:
••
••
•High 100 dB Sensitivity
••
••
•Wide, Smooth 90 Hz - 18 kHz Frequency
Response
•••••High Power Handling, 200W
••
••
•Durable Cast Frame
••
••
•High Output DomeTweeter
••
••
•4 Pin Quick Disconnect Phoenix
Connector
••
••
•RearTransformer Mounting Holes
••
••
•Front or Rear Baffle Installation
Capability
Technical Specifications:
esnopseRycneuqerF
1
:)Bd3-(zHk81otzH09
egnaRycneuqerF
1
:)Bd01-(zHk02otzH05
:ycneuqerFssaphgiH.ceRzH06
:ytivitisneSlaixABd001
:LPSdetaluclaCxaMBd821
:gnildnaHrewoPkaePW008,.tnoCW002
:ycneuqerFrevossorCzHk2
:slanimreTtupnIrotcennoCepyT-xineohPnip-4
:ecnadepmIsmhO0.8lanimoN
:snoisnemiDhtpeDmm721x.aiDmm113 )htpeD"0.5x.aiD"52.21(
:thgieWteN).sbI5.31(gk2.6
:thgieWgnippihS).sbI2.61(gk4.7
1Half Space Measurements

20 100 1000 10000 20000
0
10
20
30
1
10
100
1000
Directivity Factor (Q)
Frequency (Hz)
Directivity Index (DI), dB
2000010000100010020
3.6
20
100
360
Horizontal Vertical
Frequency (Hz)
-6dB Beamwidth (degrees)
U.S.A. and Canada only. For customer orders, contact Customer Service at:
800/392-3497 Fax: [phone]
Europe,Africa, and Middle East only. For customer orders, contact Customer Service at:
+ 49 9421-706 0 Fax: + 49 9421-706 265
Other International locations. For customer orders, contact Customer Service at:
+ 1 952 884-4051 Fax: + 1 952 887-9212
For warranty repair or service information, contact the Service Repair department at:
800/685-2606
For technical assistance, contactTechnical Support at: 866/78AUDIO
Specifications subject to change without notice.
12000 PortlandAvenue South, Burnsville, MN 55337
Phone:[phone], Fax:[phone]
www.electrovoice.com
© Telex Communications, Inc. 1/2006
Part Number 38109-865 Rev B
Beamwidth:
Directivity:
Rear
Dimension Drawings:
Architects’ and Engineers’ Specifications
The loudspeaker shall be coaxial with a 12.0-in. (30.5 cm)
low-frequency cone and a high temperature voice coil assembly
coaxially mounted with a wide dispersion dome radiator tweeter. The
loudspeaker shall meet the following criteria:AES power rating shall
be 200 watts of band limited pink noise (90 Hz to 18 kHz, 6 dB crest
factor).Frequencyresponse,uniformfrom 90Hzto 18kHz.Pressure
sensitivity,100dBSPLat1meter onaxis withone wattof band-limited
pink noise from 500 Hz to 3 kHz (ref. 20 ìpa). Minimum impedance,
5.2 ohms. The voice coils shall be LF 2.0 inches (5.1 cm) and HF -
1.5 inches (3.8 cm) in diameter, driven by ferrite magnets. The
loudspeakershallbe12.3inches(31.2cm)indiameterand5.0inches
(12.7cm)deep.Theweightshallbe13.5lbs.(6.2kg).Theloudspeaker
shall be the Electro-Voice®model 920-8B.
920-8B Part Number
• 301922-100 920-8B, 12” Coaxial Woofer
Performance Match
• D170180 CPS-2T Power Amplifier, 2 x 600W, Output
Transformer
• 500577-000 MA1212 Mixer Amplifier, 120W
• D170263 CPS 2.4 Power Amplifier, 2 x 400W
Accessories
• 1888-3711 TM60 Transformer, 60W
Side
Front
Frequency Response:
200001000010001005020
316
100
10
3.1670
80
90
100
110
Frequency (Hz)
Sensitivity (dB)
Impedance (Ohms)
Half Space
Impedance