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
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan A-6314H-1G Printed in Japan
© 2003 Icom Inc.
qFILTER 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.
wINPUT 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 ( ).
eSPEAKER 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 ( ).
rHEADPHONES JACK [PHONES]
Connect a pair of headphones (impedance: 4–16 Ω)
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 Ω
•Dimentions (W ×H ×D) :
145 mm ×111 mm ×282.5 mm
(Projections not incl.) 523⁄32 in ×43⁄8in ×111⁄8in
•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
