Owner`s manual

10
Reference
There’s No Sound
● Make sure the Input Level control has not been turned
fully counterclockwise.
● Make sure the Input Select switch has been set to the
connector where the input signal is connected (Digital
Input or Analog Input).
● Make sure the Digital Input select switch has been set
to the connector where the input signal is connected
(Optical or Coaxial).
● Input a digital signal to the Digital Input connector.
No sound is produced when an analog signal is input.
The volume level of the instrument
connected to ANALOG INPUT is too low
● Could you be using a connection cable that contains a
resistor? Use a connection cable that does not contain a
resistor.
During Digital Signal Input, the Stereo
Image Is Reversed or Sounds Unnatural,
or Output Doesn’t Sound Like Stereo
● Check the setting of the Assign switch (Right, L+R, or
Left). The DS-90A uses an identical construction for the
left and right monitors, and makes no distinction between
left and right. During digital signal input, set the Assign
switch L or R as appropriate for your setup.
● System
2 Way Bi-Amplified Monitor
● Enclosure
Bass-reflex type
● Cabinet
3/4" MDF, Baffle: 1” MDF
● LF Driver
160 mm (6-1/2") Foamed polypropylene
cone type, magnetically shielded
● HF Driver
25 mm (1") soft dome type, magnetically
shielded
● Frequency Response
48 Hz to 20 kHz (+/-3dB)
● Crossover Frequency
2.6 kHz (active fourth order)
● LF Amplifier Power
60 W
● HF Amplifier Power
30 W
◆◆◆◆◆ Analog in ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
● Input Sensitivity
0 dBu (0.775 Vrms)
● Input Impedance
20k ohm (Balanced/Unbalanced)
◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
◆◆◆◆◆ Digital in ◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
● Format
Conformity with S/P DIF
● Sample Rate
25 kHz to 55 kHz (de-emphasis:
automatic detection of ON/OFF)
● D/A Converter
24 bit
◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆
● Controls
INPUT LEVEL Knob
LF TRIM Knob (60 Hz, +/-3dB)
HF TRIM Knob (10 kHz, +/-3dB)
INPUT SELECT SW
(Analog In/Digital In)
ASSIGN SW (Right/L+R/Left)
DIGITAL INPUT SELECT SW
(Coaxial/Optical)
POWER SW
● Indicators
POWER
DIGITAL IN
● Connectors
ANALOG INPUT(XLR/TRS PHONE,
Balanced/Unbalanced)
DIGITAL INPUT (Optical)
DIGITAL INPUT (Coaxial)
DIGITAL THRU OUT (Coaxial)
● Power Supply
AC117 V,AC230 V or AC240 V
● Power Consumption
80 W
● Dimensions
228.6 (W) x 381.0 (D) x 371.5 (H) mm
9 (W) x 15 (D) x 14-5/8 (H) inches
● Weight
15 kg / 33 lbs. 2 oz.
● Accessories
Owner’s Manual
Power cord
228.6 (9")
371.5
(14-5/8")
381.0 (15")
7.5
(5/16")
11.5
(7/16")
362.0 (14-1/4")
Dimensions
Troubleshooting
If there is no sound or if the unit does not operate as you expect, please check the following points first. If this does
not resolve the problem, contact the nearest Roland service center or authorized Roland distributor.
* In the interest of product improvement, the
specifications and/or appearance of this unit
are subject to change without prior notice.
Specifications