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The BUFEX is a continuously variable speaker attenuator that can remotely control the volume of a network
of speakers.The BUFEX also provides output buffering for up to 150 self-amplified speaker inputs and allows
speaker system expansion of existing 100V, 70V, or 25V central amplifier systems.The BUFEX includes a bypass
function that can override the volume control knob setting when activated by a contact closure or open
collector output. This allows emergency announcements to be heard through all speakers in a system even if
the volume control knob setting is set low or off.A PCB-mounted bypass trim control adjusts the volume when
in bypass mode with a maximum of 12 dB of attenuation.The BUFEX fits into a single gang electrical box.
• Continuously variable attenuator
• Drive up to 150 self-amplified speaker inputs
• 100V, 70V, 25V, and page port level selectable input
• Bypass trim control for emergency paging (12 dB of
preset control over level of bypass announcements)
• Mounts in a single gang electrical box
• Rugged and attractive stainless steel plate with
engraved lettering
• Easy and secure terminal strip connections
• Two-Year Warranty
Technical
Specifications
Bypass Trip Current: 0.8 mA
Speaker Drive Capacity: 150 Self-Amplified Speakers
Input Compatibility: 100V, 70V, and 25V
Dimensions: 2-13/16" W x 4-9/16" H x 2-3/8" D
Product Weight: 3 oz.
Supply Voltage: 24V DC
Current Consumption: 1 CU (50 mA)
Output Impedance: 8 ohms
Volume Control Range: 0 to -50 dB
Bypass Voltage: 10V
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