Shure (R) FP22 User Manual

GENERAL
The FP22 is a battery-powered stereo headphone amplifier that
provides headphone feeds from any audio input source. It has the
unique capability of monitoring mono, stereo and mixed mono and
stereo inputs. The FP22 monitors and combines these signals in
the headphones without affecting the original signal. Stereo or
mono headphone outputs appear on
stereo jacks. The FP22 can drive headphones to very loud levels.
It is ideal for anyone in the broadcasting, sound reinforcement or
audio recording fields who needs a flexible, high–quality head-
phone monitor.
The FP22 is excellent for:
Line checking applications
Providing multiple headphone feeds
On stage in-ear monitoring
Boosting headphone circuits
Headphone foldback in recording studios
Practicing musical instruments or mixed vocals through headphones
while monitoring a stereo source
Features:
Exceptionally wide frequency response and dynamic range
High-impedance bridging inputs do not load signal sources
Capable of mixing mono and stereo inputs in headphone outputs
Complete user control of headphone volume
1
Loopthrough / -inch stereo phone jacks (can be internally switched to
4
become separate left and right inputs)
30 dB pad for stereo line input to accommodate a wide range of line level
sources
Balanced loopthrough XLR connectors switchable from mic to line
level
Separate XLR volume control on pull-out control knob
1997, Shure Brothers Inc.
27A8362 (QE)
Ê Ê
Ê Ê
1
/ -inch phone or mini 3.5 mm
4
Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
Model FP22 User Guide
Overall headphone balance control
Overall stereo/mono switch for headphones
LED power indicator
Powered by easily obtainable 9–volt alkaline battery or by external 12
to 24 Vdc power supply (such as Shure Model PS20 or PS20E)
1
/ -inch and 3.5 mm stereo headphone jacks
4
Effectively shielded for low susceptibility to radio-frequency interfer-
ence (RFI)
SPECIFICATIONS
Frequency Response (ref 1 kHz)
20 Hz to 20 kHz, +1, –3 dB (stereo line input)
50 Hz to 18 kHz, +1,–3 dB (mono XLR input)
Equivalent Input Noise
–125 dBV (maximum gain; source resistance 150 ; 20 Hz to
20 kHz)
Voltage Gain (at 1 kHz)
Input
XLR
(mic level)
XLR
(line level)
Stereo line
(pad at 0 dB)
Stereo line
(pad at –30 dB)
Total Harmonic Distortion
Less than 0.5% measured at –8 dBV into 8
stereo line input; 50 to 18 kHz mono XLR input)
Input Clipping Levels (at 1 kHz)
Mic level . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Level at Clipping
Headphones FP22 Out-
Impedance put
63 1.2 V (1.6
dBV)
8 500 mV (–6
dBV)
Input Impedance
XLR (mic level) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XLR (line level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stereo Line (pad at 0)
Stereo Line (pad at 30 dB)
Headphone Output Impedance (at 1 kHz)
10.2 10%
Source Gain
Impedance
(into 63 )
150 80 5 dB
600 29 5 dB
600 26 4 dB
600 –4 4 dB
(20 Hz to 20 kHz
160 mV (–16 dBV)
Headphones
Sensitivity phones SPL
106 dB at 1
mW
95 dB at 1
mW
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
Gain
(into 8 )
74 5 dB
23 5 dB
21 4 dB
–10 4 dB
50 V (+34 dBV)
Head-
120 dB
110 dB
6.3 k 10%
66 k 10%
50 k 10%
53 k 10%
Printed in U.S.A.