Shure FP22 Specification Sheet

Shure Brothers Incorporated
222 Hartrey A

venue

Evanston IL 60202-3696 U.S.A.

Phone:

In Europe, Phone: [phone] Fax: [phone]

Internationally

800-257-4873 Fax: [phone]

, Phone: [phone] Fax: [phone]

W

eb Address: http://www

.shure.com

MODEL FP22 STEREO HEADPHONE AMPLIFIER

POWER

STEREO

MODE

THRU

LOOP

PUSH

LOOP THRU

1

STEREO

MONO XLR

2

LINE

MONO

STEREO

LINE

PAD

AB

POWER/VOL

BAL

PULL FOR
MONO XLR VOL

0 dB

–30dB

HEADPHONES

Specification Sheet

MIC

LINE

MONO XLR

LEVEL

GENERAL

The

FP22 is

a battery-powered stereo headphone ampli
fier that provides headphone feeds from any audio input
source.
reo

It has the unique capability of monitoring mono, ste

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 1/4-inch phone or mini 3.5 mm 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
headphone

monitor

.

12–24 Vdc

IN

+

–

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

FOD NO. 09040



1997, Shure Brothers Incorporated

Page 1 of 2

Printed

in U.S.A.

MODEL FP22 STEREO HEADPHONE AMPLIFIER

Specification Sheet

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
 Loopthrough

ly

switched to become separate left and right inputs)

 30 dB pad for stereo line input to accommodate a wide

range

 Balanced loopthrough XLR connectors switchable from

mic

user control of headphone volume

1/4-inch stereo phone jacks (can be internal

of line level sources

to line

level



Separate XLR volume control on pull-out control knob



Overall headphone balance control



Overall stereo/mono switch for headphones



LED power indicator

 Powered

external 12 to 24 Vdc power supply (such as
PS20

1



/4-inch and 3.5 mm stereo headphone jacks

 Effectively

cy

by easily obtainable

or PS20E)

shielded for low susceptibility to radio-frequen

interference (RFI)

9–volt alkaline battery or by

Shure

Model

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 Ω; 20
Hz

to 20 kHz)

Voltage Gain

Input

(mic level)

(line level)

Stereo line

(pad at 0 dB)

Stereo line

(pa

d at –30 d

Total

Harmonic Distortion

Less than 0.5% measured at –8 dBV into 8 Ω
20 kHz stereo line input; 50 to 18 kHz

Input Clipping Levels

Mic level 160 mV (–16 dBV)
Line

level

(at 1 kHz)

Source

Impedance

XLR

XLR

B)

150

600

600

600

Ω

Ω

Ω

Ω

(at 1 kHz)

.

. . . . . . . . . . . . . . . . . . . . . . .

.

. . . . . . . . . . . . . . . . . . . . . . . .

Gain

63

80

29

26

–4

± 5

± 5

± 4

± 4

Ω)

dB

dB

dB

dB

(into

mono XLR input)

50 V (+34 dBV)

Gain

(into 8
74

± 5

23

± 5

21

± 4

–10

(20 Hz

± 4

Ω)

dB

dB

dB

dB

to

Output Level at Clipping

-

Headphones

Impedance

63

Ω

8

Ω

Input

Impedance

XLR (mic level)
XLR

(line level)
Stereo
Stereo

FP22 Out-

put

1.2 V (1.6
dBV)

500 mV (–6

dBV)

. . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . .

Line (pad at 0)
Line (pad at 30 dB)

Headphone Output Impedance

10.2 Ω ± 10%

Phase

Input in phase with output. Pin 2 of XLR input in phase

with

tip and ring of all Headphones jacks.

Power

.

Internal
Battery

External
Current

. . . . . . . . . . . . . . . . . . .

Life

. . . . . .

.

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

drain (typical)

-

T

emperature Range

Operating 0o to 49oC (32
Storage –29o to 70oC (–20o to 165oF).

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . .

Connectors

Loopthrough

Two

3-pin balanced
female)
T

wo 1/4-inch stereo phone jack (tip-left; ring-right; sleeve-

ground)

Headphones

T

wo 1/4-inch stereo phone jack headphone outputs

T

wo 3.5 mm stereo mini jacks

Power

6.5 mm coaxial power connector (tip +, sleeve –)

Case

Die-cast zinc; matte black enamel finish

Overall Dimensions

80.9 mm H x 55.5 mm W x 153 mm D
(3-3/16 x 2-3/

Net W

eight

x 6-1/16 in.)

16

450 grams (1 lb)

NOTE

:

The FP22 is lightweight and can be clipped

or

trousertop, or to D-rings on other equipment. The FP22

belt

clip is attached to the case with two easily removable

screws.

The FP22 will stand on a flat surface, and several
units can be stacked together with their belt clips re­moved.

Headphones

Sensitivity

106 dB at 1

mW

95 dB at 1

mW

. . . . . . . . . . . . . . . .

. . . . . . . . . . . .

Head-

phones SPL

120 dB

1

10 dB

6.3 kΩ
66 kΩ
50 kΩ
53 kΩ

±10%.
±10%.
±10%.
±10%.

(at 1 kHz)

One 9 V alkaline battery

Approximately 15 hours under.

normal operating conditions

12 to 24 Vdc

1

.

. . . . . . . . . . .

1 mAdc; 80 mAdc

(clipping)

at 9 Vdc

o

to

120oF).

XLR-type connectors (one male, one

to a belt

FOD

NO. 09040



1997, Shure Brothers Incorporated

Page 2 of 2

Printed

in U.S.A.