CRATE CA30D (01) PDF DOCUMENT

• READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS.

• DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FOR PROPER OPERATION, THIS UNIT REQUIRES 3″ (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR FLOW PROVISIONS IN THE CABINET.

• DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.

• CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.

• ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND COMPATIBLE WITH VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.

• PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.

• UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.

• ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERATION AND TO AVOID INJURY.

• WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.

• SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.

• OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND PRESSURE LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED AT HIGH VOLUME.

The CRATE CA30D is a compact amplifier that delivers 30 watts of power. It includes two inputs, each with its own gain control, three bands of equalization, and Crate’s Contour control for tonal flexibility. The amplifier also features Crate’s DSP digital reverb and effects, a front panel Insert (effects loop), and a Line Out jack. Sound is delivered through an 8″ Polypropylene cone coaxial speaker. Additionally, it has a flip-out locking bar for tilting the amplifier back for better projection.

To keep your CRATE CA30D amplifier looking its best, avoid abrasive cleansers. Wipe the cabinet clean using a slightly dampened cloth. Never use brass cleaners on the hardware, as they could damage the protective coatings.

1: Power: Use this switch to apply power to the amplifier. The amp is on when the top of the switch is depressed and off when the bottom of the switch is depressed. The switch illuminates when the amp is on.

2: Line Out: Use this jack to connect a high impedance, unbalanced line level signal to a house sound board, a recording console, or another amplifier.

3: Insert: Use this jack to add external effects to the signal. The ring = send (line out), tip = return (line in), sleeve = ground. This jack can also be used to “chain” multiple amplifiers together.

4: Effects Level: Use this control to adjust the amount of digital signal processing applied to the output signal.

5: Effects Mode: Use this control to select the type of digital signal processing applied to the output signal.

6: High: This serves as the treble control for both channels. Adjust this control so your high notes and harmonic overtones are lively but not overpowering.

7: Contour: Use this control to set the center point of the mid control. This control should be set at the frequency which gives you the most natural midrange tones.

8: Mid: This serves as the midrange control for both channels. Adjust this control to get the best projection and midrange tones for your instrument. The center point of the mid control is chosen by the setting of the contour control (#7).

9: Low: This serves as the bass control for both channels. Adjust this control to get the best sounding bass response for your instrument. Excessive boost of the low control can cause an unnatural howling (acoustic feedback from your instrument) and should be avoided.

11,13: Input 2, Input 1: The signal output from your acoustic instrument, tape player, rhythm machine, high-Z microphone or other source may be connected to either or both of these jacks by means of a shielded signal cable. Each of the input jacks is governed by its corresponding gain control (#10 for Input 2, #12 for Input 1). The signals from these two jacks are summed together after their gain stages.

10,12: Gain 2, Gain 1: Use these controls to set the input gain level for the corresponding input jack. These controls set the level of the input signal and serve as the amplifier’s volume controls.

14: AC Line Cord (Rear panel, not shown): The grounded power cord should only be plugged into a grounded power outlet that meets all applicable electrical codes and is compatible with the voltage, power, and frequency requirements stated on the rear panel. Do not attempt to defeat the safety ground connection.

The Insert jack allows you to patch external effects into the amplifier just prior to its power amp stage. To connect an effect to the Insert jack, use Crate’s STP201, STP202, or STP203 stereo-to-mono Y-cord, or an adapter such as Crate’s YPP117 and two shielded signal cables terminated with 1/4” tip/sleeve connectors.

The connections for the jack are:

• TIP = RETURN (line in)

• RING = SEND (line out)

• SLEEVE = GROUND

For short runs, use a Y-adapter to connect an effects device to the Insert jack. For longer runs, use a stereo-to-mono 1/4″ adapter and two mono 1/4″ signal cables to connect the effects device.

To chain two CRATE CA30D amplifiers, connect the Line Out jack (#2) on the first amplifier (AMP 1) to the Insert jack of the second amplifier (AMP 2). This frees up the Input jacks of the second amplifier. Use a shielded cable terminated with 1/4″ tip/sleeve connectors for this connection.

The CRATE CA30D features DSP (Digital Signal Processing). Use the Effects Mode control to select which type of effect will be applied to the amp’s output signal. Use the Effects Level control to adjust the amount of the effect.

The following effects are available:

Effect Name	Description
Bypass	Signal processing is turned off
Slap	Short slapback, without regeneration
Delay	Medium slapback, with regeneration
Echo	Long delay, with regeneration
Chorus	Light chorus effect – medium-slow speed
Rotary	Simulated “Leslie Speaker” tremolo
Cho/Hall	Light chorus, with moderate reverberation
Room	Moderate reverberation
Hall	Heavy reverberation

The tilt back feature allows you to better project sound towards your ears or an audience. To use it, follow these steps:

1. Carefully lean the cabinet back until the front of the cabinet is several inches off the floor.

2. Pull the tilt back bar down (to unlock it from its holder) and swing it forward until it locks into place.

3. Lower the front of the amplifier until it rests on the tilt back bar.

To return the bar to its traveling position, reverse these steps.

• Avoid trapping your hand under the tilt back bar.

• Always make sure the bar is securely locked in place before lowering the amplifier.

• Do not sit on or rest your foot on the amplifier when it is in the tilt back position.

Output Power Rating:	30 watts RMS @ 1% distortion
High:	+/-15dB @ 10kHz
Mid:	+/-15dB @ 400–1.2kHz (Contour)
Low:	+/-15dB @ 80Hz
Input Impedance:	1.5M ohm
Input Sensitivity:	20mV RMS
Sens. to Line out:	20mV
Max Input Signal:	10v RMS (28v peak to peak)
Insert Jack:	Line Out .7v RMS, Line In .7v RMS
Insert Jack Input Impedance:	44k ohm
Insert Jack Output Impedance:	2.2k ohm
Line Out Output Impedance:	2.2k ohm (Lo-Z), 2.2k ohm (Hi-Z)
Internal Speaker:	8″ Poly cone coaxial with dome tweeter; 4 ohms; 50 watts; 1″ voice coil
Power Requirements:	120VAC, 60Hz, 50VA 100/115VAC, 50/60Hz, 50VA 230VAC, 50/60Hz, 50VA
Size and Weight:	13″H x 15″W x 12″D, 30 lbs.