Accuphase AD-10 Instruction Manual - Page 2

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Analog Disc Input Board

Thank you for selecting the Accuphase AD-9, AD-10 Analog Disc Input Board. This option

board is designed for installation in one of the option slots on the rear of an Accuphase

component. It provides a set of inputs for signals from an analog record player.

Usage details of the board will differ, depending on the Accuphase component in which the

board is installed. To ensure correct use, please read this document first and then refer to the

instruction manual of the Accuphase component for additional information.

＊The board conforms to the AAB (Accuphase Analog Bus) interface standard.

LEFT, RIGHT analog record player input jacks

Connect the output cable from the analog record player to these

jacks.

GND terminal

Connect the ground cable that emerges from the analog record

player to this terminal.

AD-9

AD-10

DIP switches S1, S2, S3, S4, S5

Note:

Use a sharp pointed object to move the switch levers and make sure that the levers are set fully

to one side. If a lever is set only half-way, correct operation is not possible.

●

S1, S2: MM/MC selection

●

S3: Input impedance selection

for MC: 10/30/100 ohms

●

S4, S5: Subsonic filter ON/OFF

Component side

The illustration shows the position of switches S1 - S5 on the board.

The switch position is identical for the AD-9 and AD-10.

●

S1, S2: MM/MC equalizer gain selector

MM: Use this position for moving magnet cartridges with high output

Gain: 36dB

Input Impedance : 47 kohms

MC: Use this position for moving coil cartridges with low output

1, 2, 3, 4 : ON

1, 2, 3, 4 : OFF

Gain : 62dB

Factory default

setting

Input Impedance : As selected with S3

Usage

＊ Install the board in any empty slot.

Set these switches to the required positions before inserting the board.

AD-10

＊ This switch affects both the left and right channels.

AD-9 / AD-10

●

S3: MC input impedance selector

100Ω

30Ω

1, 2, 3, 4 : OFF

1, 2 : OFF

3, 4 : ON

Factory default

setting

●

S4, S5: Subsonic filter on/off

Factory default

setting

OFF

1, 2, 3, 4 : OFF

1, 2, 3, 4 : ON

Caution

Do not touch circuit components, solder areas, or exposed parts of connectors,

to prevent possible damage and contact problems. Hold the board only at the

PCB edges or the rear panel.

Set the power switch of the Accuphase compo-

nent to OFF.

On the rear panel, loosen the two screws at the

top and bottom and remove the panel covering one

option slot (see Figure 1).

Insert the option board by sliding it into the top

and bottom guide rails of the slot (see Figure 2).

When the board touches the internal connector,

give it a slight push until the board is firmly seated.

(The board must be flush with the panel.)

AD-9

Secure the board with the two screws at the top

and bottom.

Caution

Before inserting or removing an option board, be sure to turn the power of the

●

Accuphase component off to prevent the risk of damage.

Tighten the two fastening screws firmly. If the screws are not properly secured,

●

ground connection will be impaired and damage may occur.

H101X

INSTRUCTION MANUAL

＊ This switch affects both the left and right channels.

As a general guideline, set this switch as follows:

10Ω

For MC cartridges with internal impedance of 20 ohms

or more: 100 ohm position

For MC cartridges with internal impedance of less than

20 ohms: 30 ohm or 10 ohm position

Generally, the input impedance setting should be

●

1, 2 : ON

about 2 to 3 times the rated cartridge impedance.

3, 4 : OFF

However, since the requirements of some car-

tridges may vary, the final setting should be deter-

mined by ear.

＊ Set both switches to the same position.

This filter has a cut-off frequency of 25 Hz and a steep

attenuation slope of -12 dB/octave. lt cuts off unwanted

subsonic signal components without affecting the audible

range.

Installation

＊ The illustration shows the E-250.

Guide rail

Fig. 1

ACCUPHASE LABORATORY, INC.

2-14-10, SHIN-ISHIKAWA, AOBAKU, YOKOHAMA 225-8508, JAPAN

820-3143-30（B1） Printed in Japan

-0

Sub

Option

panel

board

Fig. 2