Owner's Guide
for the
CRATTEE
Bass Amplifier
0
10
0
10
0
10
0
10
0
10
0
10
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
Important Safeguards and Precautions:
All Crate products are designed for continuous safe operation. Abiding by the following
rules can help prevent damage to your amplifier, yourself and others.
• The amplifier is equipped with a three-pronged AC power cord. To
reduce the risk of electrical shock, NEVER remove or otherwise attempt
to defeat the ground pin of the power cord.
• Connect the amplifier ONLY to a properly grounded AC outlet of the
proper voltage for your amp.
• Avoid sudden temperature extremes, rain and moisture. Also, avoid
sudden and intense impact. (If the unit has been subjected to any of the
preceding abuses, have it looked at by an authorized service center.)
• Do not expose the unit to splashing or dripping liquid. Do not place liq-
uid filled objects on the unit.
• NEVER set the amplifier on a support that will not bear its weight.
• Always keep the total speaker impedance at or above the rated load.
• Unplug the amplifier before cleaning it. NEVER spray liquid cleaners
onto the amplifier. Wipe it with a slightly dampened, lint-free cloth to
remove dirt and film.
• DO NOT use the amplifier if it has sustained damage to the chassis,
controls, or power cord. Refer the unit to an authorized service center
for inspection.
• Prolonged exposure to high volume levels may cause permanent hear-
ing loss or damage. Such damage is progressive and irreversible!
Declaration Of Conformity
#28, Effective 01-01-2001
Manufacturer’s Name:
Production Facility:
SLM Electronics
11880 Borman Drive, St. Louis, MO 63146, USA
700 Hwy 202 W, Yellville, AR 72687, USA
1400 Ferguson Ave., St. Louis, MO 63133, USA
1400 Ferguson Ave., St. Louis, MO 63133, USA
Production Facility:
Shipping Facility:
Office Facility:
Product Type:
Audio Amplifier
Complies with Standards:
LVD:
Safety:
EMC:
92/31/EEC, 93/68/EEC, & 73/23/EWG
EN60065
EN55013, EN55020, EN55022, EN61000-3-2,
& EN61000-3-3
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
3
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
The Front Panel:
0
10
0
10
0
10
1
2
3
4
5
6
7
1: 0dB INPUT: Use this 1/4” jack to connect your instrument to the amplifier by
means of a shielded instrument cable. If your instrument has active electronics or
high output pickups, or if the amplifier distorts at low settings of the Gain control
(#3), use the -15dB Input jack (#2).
2: -15dB INPUT: If your instrument has active electronics or high output pickups,
use this 1/4” jack to connect your instrument to the amplifier by means of a shield-
ed instrument cable. The input signal is attenuated 15dB to prevent overdriving the
amplifier’s input stages.
3: GAIN: Use this control to adjust the level of the input signal.
4: CONTOUR: Use this control to adjust the tone of the input signal. The Contour
control selects the frequency where the effect is centered, giving you a wide vari-
ety of tone variations – from a studio “V”-shaped tone to a more up-front, “live”
sound. This control is only active when the Contour Active switch (#5) is depressed.
5: CONTOUR ACTIVE: This switch, when depressed, activates the Contour con-
trol (#4).
6: LOW: Use this control to adjust the bass response of the amplifier. Rotating the
control counterclockwise reduces the low frequency output. Rotating the control
clockwise increases the low frequency output. The Low control provides a range of
28dB of boost or cut at 60Hz.
7: LO MID: Use this control to adjust the “thickness” or “fatness” of the amplifier.
Rotating the control counterclockwise reduces the lower middle frequency output.
Rotating the control clockwise increases the lower middle frequency output. The
Low Mid control provides a range of 15dB of boost or cut at 400Hz.
8: HI MID: Use this control to adjust the clarity and definition of the string attack.
Rotating the control counterclockwise reduces the upper middle frequency output.
Rotating the control clockwise increases the upper middle frequency output. The
High Mid control provides a range of 18dB of boost or cut at 1kHz.
4
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
0
10
0
10
0
10
8
9
10 11
12
13
14 15
9: HIGH: Use this control to adjust the high frequency response of the amplifier.
Rotating the control counterclockwise reduces the high frequency output. Rotating
the control clockwise increases the high frequency output. The High control pro-
vides a range of 33dB of boost or cut at 10kHz.
10: MASTER LEVEL: Use this control to adjust the overall output of the amplifier.
11: LIMIT: This LED illuminates when the amplifier is near clipping. Flashing at
peak playing levels is acceptable. However, if the indicator remains illuminated,
reduce the Master Level control (#10) until the indicator flashes.
12: HEADPHONES: Use this jack to connect headphones to the amplifier. The
internal speaker is disconnected when headphones are used.
CAUTION: To avoid possible damage to your hearing, do not use head-
phones for extended periods of time at extremely loud levels.
13: SPEAKER: Use this jack to connect the amplifier to an external speaker. The
internal speaker is disconnected when this jack is used. The impedance the exter-
nal speaker must be 4 ohms or greater!
WARNING: Do not attempt to use headphones in the Speaker jack!
Permanent hearing damage could result!
14: ON LED: This LED illuminates when the amplifier is turned on.
15: POWER: Use this switch to turn the amplifier on (top of the switch depressed)
and off (bottom of the switch depressed).
16: POWER 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 stat-
ed on the rear panel. Do not attempt to defeat the safety ground connection.
5
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
Suggested Settings:
Clean:
Blues:
Rhythm:
Lead:
OUT
0
0
0
0
10
10
10
10
0
0
0
0
10
10
10
10
0
0
0
0
10
10
10
10
0
0
0
0
10
10
10
10
0
0
0
0
10
10
10
10
0
0
0
0
10
10
10
10
IN
IN
IN
6
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
System Block Diagram:
R
H
PHONES
E
SPAKE
APM
PWOER
LIMTER
MSATER
VLOUME
HI
HI
MDI
EQ
LO
MDI
LO
ATCIVE
CTNOUR
SAHPE
GIAN
0Bd
-51dB
I
INPUT
7
Download from Www.Somanuals.com. All Manuals Search And Download.
Bass Amplifier
MXB25 TECHNICAL SPECIFICATIONS:
Output Power Rating
Maximum Input Signal Accepted
Input Impedance
27 watts RMS @ 5% THD 4 ohms, 120 VAC
15 volts peak-to-peak
220k ohms
Signal to Noise Ratio
75dB
Low Control
28dB Range @ 60Hz
15dB Range @ 400Hz
18dB Range @ 1kHz
33dB Range @ 10kHz
Low Mid Control
High Mid Control
High Control
Power Requirements
120 VAC, 60Hz, 45VA
100/115VAC, 50/60Hz, 45VA
230VAC, 50Hz, 45VA
Speaker Size and Rating
Size and Weight
Crate Custom Design 10”, 30 watts
16” H x 15” W x 12” D, 39 lbs.
The MBX25 is covered with a durable black Tolex material: wipe it clean with a lint-free cloth.
Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications
and information in this manual are subject to change without notice.
@2002 SLM Electronics, a division of St. Louis Music, Inc • 1400 Ferguson Avenue • St. Louis, MO 63133
18-432-01 • 04/02
Download from Www.Somanuals.com. All Manuals Search And Download.
|