Pioneer A-20-S: Connecting up

Connecting up

02

5

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Chapter 2:

Connecting up

Making cable connections

 Caution

• Before making or changing the connections, switch off the power and disconnect the power cord from the AC 

outlet.

• Connect the power cord after all the connections between devices have been completed.

REC

R

L

OUTPUT

R

L

PLAY

R

L

AUDIO

OUTPUT

PRE OUT

R

L

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

MENU

iPod







Music>

Extras>

Settings>

Shuffle Songs

Backlight

SACD/CD player

Network audio player

PRE OUT jacks on pre-

amplifier or AV amplifier

Speaker system B

Speaker system A

Turntable

Tuner

iPod dock, etc

CD recorder or 

tape deck

Right

Left

Right

Left

Power cord 

(included)

A-30’s rear panel

A-30 only

 Caution

• The 

SIGNAL GND

 terminal is provided to reduce 

noise when connecting the unit to components 

such as an analog turntable.

• Do not connect the 

PHONO (MM)

 terminals to any 

component other than a turntable; also, do not 

connect to a turntable equipped with built-in 

equalizer. An excessively high sound output may be 

produced, resulting in damage to your speakers or 

other devices.

• The unit’s 

PHONO (MM)

 terminals are designed to 

be used with turntables equipped with MM 

(moving-magnet) type cartridges. Turntables 

equipped with MC (moving-coil) cartridges cannot 

be used.

• Make sure not to bend the cables over the top of 

this unit (as shown in the illustration). If this 

happens, the magnetic field produced by the 

transformers in this unit may cause a humming 

noise from the speakers.

• The unit’s 

POWER AMP DIRECT

 terminals should 

never be connected to any other component’s 

connectors except PRE-AMP OUT.

• If your turntable has a grounding wire, secure it to 

the ground terminal on this amplifier.

 Note

• When connecting a tape cassette deck, playback 

noise may be heard, depending on the installation 

location. This noise is caused by leakage flux from 

the amplifier’s transformer. In this event, change 

the installation location, or move the deck farther 

from the amplifier.

• iPod is a trademark of Apple Inc., registered in the 

U.S. and other countries.

About “Bi-wiring”

This unit can be used with speakers that support bi-

wiring. Be sure to connect the high-frequency and

low-frequency connections correctly.

• During playback, be sure that both the 

SPEAKERS 

A

 button and 

SPEAKERS B

 button are set to ON 

(page 7).

 Caution

• When using bi-wiring to connect speakers, avoid 

adverse affects on the amplifier by being sure to 

remove the HIGH and LOW short bars provided 

with the speakers. For detailed information, consult 

the instructions provided with the speakers.

• When using speakers with removable network 

circuits, note that if the network is removed, no 

effect will be produced and damage may be caused 

to the speaker.

• Another method of connection is to connect the 

SPEAKERS A

 terminals to HIGH and the 

SPEAKERS B

 terminals to LOW (reverse that shown 

in the illustration).

HIGH

LOW

HIGH

LOW

Speaker system

Left

Speaker system

Right

A-30’s rear 

panel

Remove the shorting 

bar between the + 

and – terminals.

A30_SYXE8.book  5 ページ  ２０１２年２月１６日　木曜日　午前８時５８分

02

Connecting up

6

En

Connecting speaker cables

1

Twist the cable cores.

2

Loosen the nut on the SPEAKERS 

terminal, and insert the speaker cable into 

the exposed hole in the terminal shaft.

3

Retighten the terminal nut.

 Caution

• When using only one set of speaker terminals 

(SPEAKERS A or SPEAKERS B), or when utilizing 

bi-wiring connections, the speaker used should 

have a nominal impedance between 4

Ω

 and 

16

Ω

. When using both sets of terminals, the 

connected speakers should have nominal 

impedance between 8

Ω

 and 32

Ω

. Consult the 

instructions accompanying your speakers for 

details regarding the impedance value.

• Make sure the positive and negative (+/–) terminals 

on the amplifier match those on the speakers.

• These speaker terminals carry 

HAZARDOUS live 

voltage

. To prevent the risk of electric shock when 

connecting or disconnecting the speaker cables, 

disconnect the power cord before touching any 

uninsulated parts.

• Make sure that all the bare speaker wire is twisted 

together and inserted fully into the speaker 

terminal. If any of the bare speaker wire touches the 

back panel it may cause the power to cut off as a 

safety measure.

Connecting audio cables

Connect the white plug to the left (L) jack, and the red 

plug to the right (R) jack. Be sure to insert the plugs fully 

into the jacks.

1

2

3

10 mm

Left (white)

Right (red)

Using centralized control with other 

Pioneer components (Except A-10)

Multiple Pioneer components equipped with 

CONTROL 

IN/OUT

 jacks can be connected to the A-30/A-20 unit, 

allowing centralized control of the components via the 

remote sensor on the A-30/A-20. This also allows remote 

control of components not equipped with a remote 

sensor, or installed in places where the component’s 

remote sensor cannot be accessed.

 Note

• For connections use a commercially available 

monaural miniplug cord (without resistor).

•  When connecting the 

CONTROL IN/OUT

 jacks, 

commercially available audio cords must also be 

used to make analog connections. Merely 

connecting the 

CONTROL IN/OUT

 jacks alone will 

not allow proper system control. 

• When a control cord is connected to the A-30/A-

20’s 

CONTROL IN

 jack, the unit cannot be 

controlled by pointing the remote control at the A-

30/A-20 (the remote sensor is automatically 

disabled).

Plugging in

 Important

• When going on a trip or otherwise not using the 

unit for an extended period, always disconnect the 

power cord from its outlet. Note that various 

internal settings will not be lost even if the power 

cord is disconnected from its outlet for an extended 

time.

• If it is necessary to detach the power cord, first be 

sure to press the 



/I STANDBY/ON

 button on the 

front panel of the unit so the A-30/A-20 is turned 

OFF or the A-10 is in standby mode before 

detaching the cord.

 Caution

• The use of a power cord other than the one provided 

will invalidate the warranty, since Pioneer will not 

be responsible for any damage incurred. (The 

power cord provided with the model A-30 has a 

rated current capacity of 10 A, while the cord 

provided with the A-20/A-10 has a rated current 

capacity of 2.5 A.)

• Do not use any power cord other than the one 

supplied with this unit.

• Do not use the supplied power cord for any purpose 

other than that described below.

After you’ve finished making all connections, plug the 

unit into an AC outlet.

1

Plug the supplied power cord into the 

AC IN socket on the rear panel of the unit.

2

Plug the other end into an AC outlet.

IN

OUT

CONTROL

Other Pioneer 

component equipped 

with CONTROL IN/

OUT jacks

To other Pioneer 

component 

equipped with 

CONTROL IN jack

A-30/A-20

Aim remote control 

at the sensor on the 

A-30/A-20.

A-30/A-20 

remote 

control

To AC outlet

Power cord

A-30’s rear panel

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