CRATE CA15 Acoustic Amplifier User Guide
- June 13, 2024
- CRATE
Table of Contents
CA15 Acoustic Amplifier
User Guide
Introduction:
Congratulations!
You are now the proud owner of one of Crate’s latest contributions to the
world of acoustic amplification, the CA15. This compact amplifier delivers
over 12 watts of musical power and incorporates two inputs (each with its own
gain control), three bands of equalization, and reverb. A pair of RCAtype CD
Input jacks allow you to practice with your favorite music. A jack for
headphones is provided, along with a jack for connecting the CA15 to an
external speaker cabinet. A Crate Custom Design 8”woofer delivers smooth clear
sound with excellent projection and fidelity.
Your CA15 was designed by musicians and built using only the best components.
Extensive testing at the hands (and ears) of skilled technicians and musicians
insures you that this amplifier is the absolute best it can be.
In order to get the most out of your new amplifier, we strongly urge you to go
over the information contained in this manual before you begin playing.
And thank you for choosing CRATE.
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
- 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.
EXPLANATION OF GRAPHICAL SYMBOLS: = “DANGEROUS VOLTAGE” = “IT IS NECESSARY
FOR THE USER TO REFER TO THE INSTRUCTION MANUAL”
The Front Panel:
1,3: Input 1,
Input 2. 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 (#2 for Input 1, #4 for Input 2).
The signals from these two jacks are summed together after their gain stages.
2,4: Gain 1, Gain 2. 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.
5: 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.
6: Mid. This serves as the midrange control for both channels. Adjust this
control to get the best projection and midrange tones for your instrument.
7: 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.
8: Reverb Level: Use this control to adjust the amount of reverberation added
to the signal. In the fully counter clockwise position, the signal is dry (no
reverb added). As you rotate the control clockwise the amount of reverb
increases.
9: CD Input. Use these jacks to connect the output from a CD player, tape
deck, or rhythm machine to the amplifier. The CD Input jacks are post EQ and
Gain, so use the level control on the CD player (etc.) to adjust the level of
the signal at these jacks. 10: Headphones. Use this jack to connect headphones
to the amplfier. The internal speaker is disconnected when this jack is used.
11: External Speaker. Use this jack to connect the amplifier to an external
speaker. The internal speaker is disconnected when this jack is used. The
impedance of the external speaker must be 4 ohms or greater. Do not attempt to
use headphones in the External Speaker jack! Permanent hearing damage could
result.
12: Power Switch. (Rear panel, not shown) Use this switch to apply power to
the amplifier: the amp is on when the top of the switch is depressed, off when
the bot- tom of the switch is depressed. The switch illuminates when the amp
is on.
13: 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.
Technical Specifications:
| Output Power Rating: | 12+ watts RMS @ 5% THD, 4 ohm load |
|---|---|
| Low: | ±15dB @ 80Hz |
| Mid: | ±15dB @ 650Hz |
| High: | ±15dB @ 10kHz |
| Input Impedance: | 1.5M ohm |
| Max Input Signal: | 7v peak to peak |
| Total System Gain: | 52dB @ 1kHz |
| Input Sensitivity: | 20mV |
| Internal Speakers: | 8” Crate Custom Design, 4 ohm, 15 watts; Piezo Tweeter |
| Power Requirements: | 120VAC, 60Hz, 30VA |
100/115VAC, 50/60Hz, 30VA
230VAC, 50/60Hz, 30VA
Size and Weight:| 14”H x 14”W x 12”D, 21 lbs.
System Block Diagram:
Declaration Of Conformity
33, Effective 01-01-2001
Manufacturer’s Name: SLM Electronics
Production Facility: 1901 Congressional Drive, St. Louis, MO 63146, USA
Production Facility: 700 Hwy 202 W, Yellville, AR 72687, USA
Shipping Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Office Facility: 1400 Ferguson Ave., St. Louis, MO 63133, USA
Product Type: Audio Amplifier
Complies with the following Standards:
Safety: EN60065, E60065, C22.2, UL6500 and/or UL813
EMC: Directive 89/336/EEC, EN55103, EN55013, EN61000, and/or FCC 47CFR 15B clA
Supplementary information provided by:
SLM Electronics – R & D Engineering
1901 Congressional Drive, St Louis, MO 63146, USA
Tel.: 314-569-0141, Fax:
314-569-0175
Specifications and information in this manual are subject to change without
notice.
www.crateamps.com
©2004 SLM Electronics
A Division of St. Louis Music Co.
1400 Ferguson Avenue
St. Louis, MO 63133
47-936-01
022404https://manual-hub.com/