background image

Thank you for purchasing the SP-23 

EXTERNAL SPEAKER

.

To fully enjoy the benefits of the SP-23, please read
these instructions thoroughly before using the SP-23
with transceiver or receiver.

EXTERNAL SPEAKER

INSTRUCTIONS

SP-23

The SP-23 

EXTERNAL SPEAKER

is designed for use with

a wide variety of communication equipment, especially
base station systems. The SP-23 is equipped with four
separate audio network filters for maximum control of
the audio characteristics of received signals.

FOREWORD

CONNECTIONS

CONNECTION EXAMPLE

SP-23 (Rear panel)

Transceiver or receiver

Ext. speaker jack

Supplied connection cable

from other transceiver or receiver

FILTER SELECTOR
SWITCHES

INPUT JACK 
SELECTOR SWITCH

SPEAKER ON/OFF 
SWITCH

HEADPHONES JACK

w

e

q

r

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan

A-6314H-1G  Printed in Japan

© 2003 Icom Inc.

q

FILTER SELECTOR SWITCHES [HPF-1/2, LPF-1/2]

Push to select the internal audio filters that consist of
high-pass and low-pass filters with two different cut-
off frequency characteristics for each filter. They are
useful in producing a customized, personal audio
sound.

• [HPF 1] SWITCH

Cuts off audio output frequencies of approx. 500 Hz
or less when the switch is pushed IN.

• [HPF 2] SWITCH

Cuts off audio output frequencies of approx. 250 Hz
or less when the switch is pushed IN.

• [LPF 1] SWITCH

Cuts off audio output frequencies of approx. 3 kHz
or more when the switch is pushed IN.

• [LPF 2] SWITCH

Cuts off audio output frequencies of approx. 1 kHz
or more when the switch is pushed IN.

w

INPUT JACK SELECTOR SWITCH [INPUTA/B]

Push to select [INPUT A] or [INPUT B] on the rear
panel.
• [INPUT A] is selected: Released (      ).
• [INPUT B] is selected: Pushed IN (      ).

e

SPEAKER ON/OFF SWITCH [SPEAKER OFF]

Push to turn the speaker audio output ON or OFF. 
• The speaker is ON: Released (      ).
• The speaker is OFF: Pushed IN (      ).

r

HEADPHONES JACK [PHONES]

Connect a pair of headphones (impedance: 4–16 

)

to this jack if required. The built-in speaker does not
function while the [PHONES] jack is being used.

NOTE:

If no sound is emitted from both the speaker
and headphones, make sure the [SPEAKER
OFF] switch is in the OUT position.

• This instruction sheet

…………………………………

1

• Speaker cable

…………………………………………

1

• Sticker (Frequency characteristics)

…………………

1

NOTE:

[HPF 1] is selected automatically while [HPF 1]
and [HPF 2] are pushed IN at the same time.
[LPF 1] is also selected automatically while
[LPF 1] and [LPF 2] are pushed IN at the same
time.

PANEL DESCRIPTION

SPECIFICATIONS

• Rated Input Power

: 2 W

• Maximum Input Power : 4 W
• Impedance

: 8 

• Dimentions (W 

×

×

D) : 145 mm 

×

111 mm 

×

282.5 mm

(Projections not incl.)

5

23⁄32

in 

×

4

3⁄8

in 

×

11

1⁄8

in

• Weight

: Approx. 1.65 kg (3.6 lbs.)

All stated specifications are subject to change without notice or obligation.

ACCESSORIES

Connect the supplied speaker cable between the [INPUT A] or [INPUT B] jack on the SP-23 rear panel and the trans-
ceiver or receiver

,

s external speaker jack.

Another jack is available to connect other transceiver or receiver. In this case, it is necessary to purchase another
speaker cable.
(Cable specification: 3.5 (d) mm, monophonic audio cable)

FRONT PANEL

To raise the stand:
With the speaker upside down, pull the stand upwards,
as illustrated below.

STAND

stopper

R

CAUTION

BE CAREFUL 

not to cut your fingers on the edge of the

stopper when pulling up the stand.

Reviews: