Shure FP16A User Manual
Model FP16A Distribution Amplifier
User Guide
GENERAL DESCRIPTION
The FP16A is a 1-input, 6-output, compact, self-contained audio distribution amplifier for routing multiple audio signal feeds
without incurring loss, distortion, hum or noise. The intelligent design, reliable components and meticulous construction of
the FP16A make it the optimum choice for broadcast stations—AM, FM, or TV, studios or ENG vans—as well as recording
studios, duplicating houses, and telecommunications and production facilities.
FEATURES
•
Wide-range audio frequency response
• Up to 90 dB gain
• Low noise, hum and distortion
• Protected against damage from input overload and
shorted outputs; protected against RFI and
mechanically protected against incorrect battery
insertion
• Transformer-coupled XLR input connector is
switchable to low-impedance microphone or line
level
• Phantom power for condenser microphones
available at input
• Six isolated, transformer-coupled XLR outputs are
switchable to low-impedance balanced microphone
or 600-ohm balanced line level
• Link input and output jacks permit "ganging" of
FP16s for additional outputs, or adding external
equipment such as equalizers, compressors or
limiters
• Recessed input gain control with normal and
overload LED indicators
• Recessed individual output channel gain controls
• Powered by AC (120 or 240V-internally selectable)
or built-in battery pack
• Low battery drain provides more than 15 hours
operation under normal operating conditions
• Noiseless and automatic switchover to and from
battery power
• Rugged and durable construction
• Compact and lightweight for field use and
transportation
• Reliable operation over wide temperature and
humidity extremes
• Rack-mountable with accessory rack mount kit
©2004, Shure Incorporated
27A8725 (Rev. 3)
Printed in U.S.A.
SPECIFICATIONS
Frequency Response (ref 1 kHz)
30 to 20,000 Hz, ±2 dB
Voltage Gain (at 1 kHz)
INPUT OUTPUT
LINE MICROPHONE LINK
Mic 90 dB 40 dB 70 dB
Line 40 dB -10 dB 20 dB
Link 20 dB -30dB - -
Inputs
INPUT IMPEDANCE (at 1 kHz) INPUT CLIPPING
FOR USE WITH ACTUAL
Mic 150 Ω 1 kΩ -62 to -6 dBV*
Line less than 10 kΩ 66 kΩ -12 to + 44 dBV*
Link more than 5 kΩ 24 kΩ +8 dBV
*Dependent on input control setting
Outputs
INPUT IMPEDANCE (at 1 kHz) INPUT CLIPPING
FOR USE WITH ACTUAL
Mic 150 Ω 2 Ω -34 dBV
Line 600 Ω 185 Ω +16 dBV
Link 600 Ω or greater 100 Ω or less +16 dBV
Noise
Equivalent Input Noise: -129 dBV (low-impedance microphone,
150 Ohms, 300 to 20,000 Hz) into 600 ohm load at full gain
Equivalent Input Hum and Noise: -127 dBV (low-impedance microphone, 150 Ohms, 20 to 20,000 Hz) into 600 ohm load at full gain
Output Noise: -90 dBV maximum (output control full counterclockwise
[off]), -65 dBV maximum (output control full clockwise [on]) (input control
down, 300 to 20,000 Hz)
Output Hum and Noise: -75 dBV maximum (output control down), 65 dBV max. (output control up, input control down, 20 to 20,000 Hz)
LEVEL AT 1kHz
LEVEL AT 1kHz
Distortion
0.4% THD, 30 to 20,000 Hz at +15 dBm output; 0.5% or less IM distortion at +15 dBm output
Common Mode Rejection
65 dB minimum with input of - 20 dBV at 100 Hz
Control Interaction
Less than 1 dB with any control combination
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, willcause no damage; microphone input will not be damaged by signals up to 3V
Phase
All outputs in phase with input. Pin 2 is “high” with respect to pin 3; pin
1 is ground. Tips of link input and output phone jacks are in phase with
pin 2 of XLR connectors.
Phantom Power
30 VDC nominal, 3.3k series resistance, automatically disabled with input switch in Line position
Operating Voltage
AC Operation: 120 or 240 VAC ± 10% (internally selectable), 50/60 Hz,
5.5W
DC Operation: 27 VDC nominal at 16 mA typical no- signal, 22 mA typ-
ical at 0 VU (+4 dBm) output; 21.5 VDC minimum; battery life approximately 20 hours with alkaline batteries at +4 dBm output in continuous
use; three 9 volt batteries, type NEDA 1604A (Duracell MN1604 or
Eveready 522 recommended)
Temperature Range
Operating: -18° to 57°C (0° to 135°F)
Storage: -29° to 71°C (-20° to 160°F)
Dimensions
79.5 mm H x 310 mm W x 230 mm D
(3-1/8 in, x 12-7/32 in. x 9-1/16 in.)
Weight
Net: 2.75 kg (6 Ib 1 oz.)
Packaged: 3.15 kg (6 Ib 15 oz.)
Certifications
Listed by Underwriters Laboratories. Inc.; listed by Canadian Standards
Association as Certified
CONTROLS AND CONNECTORS
On⋅Off Switch: applies power to the FP16A circuitry
Power LED: Indicates unit is on.
Input Gain Screwdriver Control: adjusts input signal level.
Output 1-6 Screwdriver Control: adjusts individual output
channel signal levels.
Norm LED: indicates when internal signal level is approxi-
mately 25 dB below clipping.
Overload LED: indicates when internal signal level ap-
proaches clipping.
Three-Pin XLR 1-6 Output Connectors: provide for connec-
tion to either low-impedance microphone or line level inputs
of power amplifiers, mixers, or other signal processing
equipment.
Mic/Line 1-6 Slide Switches: select microphone or line level
output signal levels.
Phantom On-Off Slide Switch: applies 27 VDC (nominal)
phantom power to pins 2 and 3 of the input connector for
use with condenser microphones. IMPORTANT: Make cer-
tain any condenser microphone used is compatible with the
FP16A phantom circuit, and that the FP16A input Mic/Line
switch is in the Mic position. Do not turn the Phantom switch
on when using unbalanced low-impedance microphones;
objectionable hum will result. Turn the Phantom switch off
when phantom power is not required.
Three-Socket XLR Input connector: provides for connection
to microphone or line level input signal sources.
Input Mic/Line Slide Switch: selects microphone or line-level input signals.
Link In, Out Phone Jacks: provide for connecting more distribution amplifiers for additional outputs, or adding external
equipment such as equalizers, compressors, or limiters.
When connecting two or more FP16As together for additional outputs, connect the Link Out jack of the "master" unit to
the Link In jacks of the others. Any number of FP16As can
be tied together in this way. The Link In jack is input-only,
and has switching contacts to disconnect the input signal
amplifier from the output channel volume controls.
Connect an equalizer, limiter or compressor to the FP16A by
connecting the FP16A Link Out jack to the external unit's input, and the external unit's output to the FP16A Link In jack.
Signals at the Link jacks are typically 10 dB below line level.
The Link In input impedance is greater than 20 kΩ and may
be considered a bridging impedance.
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