Roland DS-30A 用户手册
10
Reference
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.
problem, contact the nearest Roland service center or authorized Roland distributor.
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).
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).
(Optical or Coaxial).
• Input a digital signal to the Digital Input connector. No
sound is produced when an analog signal is input.
926
The volume level of the instrument
connected to ANALOG INPUT is too
low
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.
resistor.
During Digital Signal Input, the Stereo
Image Is Reversed or Sounds
Unnatural, or Output Doesn’t Sound
Like 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-30A 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.
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.
Specifications
• System
2-Way Bi-Amplified Monitor
• Enclosure
Bass-reflex type
• Cabinet
1/2" PB (Baffle: 5/8" MDF)
• LF Driver
120 mm (5") Foamed polypropylene cone type,
magnetically shielded
magnetically shielded
• HF Driver
25 mm (1") Soft dome type, magnetically shielded
• Frequency Response
78 Hz to 20 kHz (+/-3 dB)
• Crossover Frequency
2.3 kHz (active third order)
• LF Amplifier Power
20 W
• HF Amplifier Power
10 W
Analog in
• Input Sensitivity
0 dBu (0.775 Vrms)
• Input Impedance
20 k ohms (Balanced/Unbalanced)
Digital in
• Format
Conformity with S/P DIF
• Sample Rate
32 kHz to 96 kHz (de-emphasis: OFF)
• D/A Converter
24 bits
• Controls
LEVEL Knob
LF TRIM Knob (80 Hz, +/-3 dB)
HF TRIM Knob (10 kHz, +/-3 dB)
INPUT SELECT SW (Analog In/Digital In)
ASSIGN SW (Right/L+R/Left)
DIGITAL INPUT SELECT SW (Optical/Coaxial)
POWER SW
LF TRIM Knob (80 Hz, +/-3 dB)
HF TRIM Knob (10 kHz, +/-3 dB)
INPUT SELECT SW (Analog In/Digital In)
ASSIGN SW (Right/L+R/Left)
DIGITAL INPUT SELECT SW (Optical/Coaxial)
POWER SW
• Indicators
POWER
DIGITAL IN
DIGITAL IN
• Connectors
ANALOG INPUT (XLR / 1/4 inch TRS phone type)
DIGITAL INPUT (Optical)
DIGITAL INPUT (Coaxial)
DIGITAL THRU OUT (Coaxial)
DIGITAL INPUT (Optical)
DIGITAL INPUT (Coaxial)
DIGITAL THRU OUT (Coaxial)