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CD30 Front Panel 

BACK PANEL - 

Continued

 

 

REV/DRIVE FOOTSWITCH:

 Connect the footswitch here to enable remote 

selection of DRIVE and REVERB. 

 
 
 
 

SEND LEVEL:

 Adjusts the amount of signal to the SEND jack 

RETURN LEVEL:

 Adjusts the gain (sensitivity) of the RETURN jack. 

 

SEND/RETURN:

 (Effects loop) Connect SEND to the input of an effects device 

and the output of the effects device to the RETURN. 

INPUT 1

: Plug in connection for most guitars. 

INPUT 2

: Plug in connection for high-output/pre amplified instruments. Provides 

6dB less gain (sensitivity) than INPUT 1. 

Multiple CD Amps – Connect 

PRE-OUT

 on the primary unit to the 

PA-IN 

of the 

auxiliary unit. The primary unit is used to control all auxiliary units except the 
PRESENCE which remains active on each unit. 

VOLUME:

 Adjusts the loudness of the Clean Channel 

DRIVE LED

 indicates the Drive Channel is active 

 

Important Safety Instructions 

 

DRIVE:

 Adjusts the gain of the Drive Channel 

 

GAIN:

 Adjusts the loudness of the Drive Channel 

This symbol warns the user of dangerous voltage levels localized within the 
enclosure. 

VOICING: 

Provides a low-frequency boost for the Drive channel 

 
 

BRIGHT:

 Provides a high-frequency boost for both the Clean and Drive 

channels. 

This symbol advises the user to read all accompanying literature for safe 
operation of the unit. 
 

MID BOOST:

 Provides a mid-frequency boost for both the Clean and Drive 

channels. 

 
•Read, retain, and follow all instructions.  Heed all warnings. 

•Only connect the power supply cord to an earth grounded AC receptacle in accordance with 
the voltage and frequency ratings listed under INPUTPOWER on the rear panel of this product. 

TREBLE

: Adjusts the high-frequency tone. 

•WARNING: To prevent damage, fire or shock hazard, do not expose this unit to rain or 
moisture. 

MIDDLE:

 Adjusts the mid-frequency tone. 

•Unplug the power supply cord before cleaning the unit exterior (use a damp cloth only).  Wait 
until the unit is completely dry before re-connecting it to power. 

BASS:

 Adjusts the low-frequency tone. 

•Maintain at least 6 inches (15.24 cm) of unobstructed air space behind the unit to allow for 
proper ventilation and cooling of the unit. 

MASTER:

 Adjusts overall loudness of the amplifier. 

•This product should be located away from heat sources such as radiators, heat registers, or 
other products that produce heat. 

REVERB:

 Adjusts the reverb effect level for both channels. 

•This product may be equipped with a polarized plug (one blade wider than the other).  This is 
a safety feature.  If you are unable to insert the plug into the outlet, contact an electrician to 
replace your obsolete outlet.  Do not defeat the safety purpose of this plug. 

POWER INDICATOR:

 Illuminates when the unit is on. 

BACK PANEL 

•Protect the power supply cord from being pinched or abraded. 

AC INPUT:

 Connect the female end of the AC line cord here. Connect the male 

plug to a suitable source of line voltage. Refer to the voltage information on the 
back of the amplifier for its voltage and current requirements. This connector also 
acts as the main fuse holder and includes a compartment for a spare fuse. 

•This product should only be used with a cart or stand that is recommended by the 
manufacturer. 
•The power supply cord of this product should be unplugged from the outlet when left unused 
for a long period of time, or during electrical storms. 
•This product should be serviced by qualified service personnel when: the power supply cord 
or the plug has been damaged; or objects have fallen, or liquid has been spilled onto the 
product; or the product has been exposed to rain; or the product does not appear to operate 
normally or exhibits a marked change in performance; or the product has been dropped, or 
the enclosure damaged. 

POWER

: This toggle switch turns the AC power ON and Off.  

STANDBY:

 Use STANDBY instead of switching the power of during short breaks 

to eliminate the tube warm-up delay. 

•Do not drip nor splash liquids, nor place liquid filled containers on the unit. 
•CAUTION: No user serviceable parts inside, refer servicing to qualified personnel only. 
• Dean Markley amplifiers and loudspeaker systems are capable of producing very high sound 
pressure levels which may cause temporary or permanent hearing damage.  Use care when 
setting and adjusting volume levels during use. 

4 OHM SPEAKER:

 Connect a 4 ohm speaker load if using this jack 

8 OHM SPEAKER:

 Connect an 8 ohm speaker load if using this jack. 

**(Note) – A speaker load must be connected when the unit is on. 

 

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