CARVIN BX250 User Manual

MB210
The BX250/MB Series MicroBass Amplifiers offer classic natural bass tone
with unprecedented tonal control and extended headroom. The BX250 Head
and Combo amps deliver 200w at 8 ohms and 250w at 4ohms.
Four discrete Class A input stages produce the harmonic basis for the preamp
right from the input jack. It begins with a boutique flat response, then we add
extensive tone control allowing you to carve out your signature sound. Harmonic
content increases as you turn up the DRIVE control producing rich harmonics
at maximum settings. The CLASS-D output and lightweight switch-mode power
supply use far less energy from the wall and produces less heat.
Light weight, solid design, bullet-proof construction and a list of indispensable
features make sure the BX/MB amps will be your choice for years to come.
• Discrete CLASS A input stages
• Preamp DRIVE and MASTER volume controls
• 2 mid sweep semi-parametric EQ, BASS and TREBLE
• CONTOUR pre-shape control
• Single knob COMPRESSOR
• DIRECT OUT balanced XLR with LEVEL, PRE/POST and GROUND/LIFT
• MUTE switch allows silent tuning or headphone practice
• TUNER/PHONES output jack independent of MUTE switch
• TWEETER DIM switch allows control of speaker brightness (combo)
• CLASS-D amplifier runs cool while consuming less power
• Solid metal shaft controls with panel mounted threaded metal bushings
• Circuit boards are MIL SPEC, double sided, FR-4 glass epoxy
• Energy efficient worldwide power supply accepts 90-250VAC, 50-60Hz
• Compact and light weight.
GETTING STARTED
1. With POWER off, connect an instrument to the INPUT jack. If you have the
BX250 head, also connect a speaker to a speaker out jack. (4 ohms or higher)
2. Set the DRIVE and MASTER volume to "0" and set the ACTIVE INPUT switch
for your type of bass.
3. Set the four tone controls to their center "0" position and the CONTOUR to
FLAT. This is the "FLAT" setting for the amp.
4. Now, turn the amp ON. Turn up the volume on your bass guitar. Gradually
increase the MASTER control to the desired level. If no sound is heard turn
down the MASTER, check the MUTE switch, speaker connections, and the
POWER(blue)/PROTECT(red) LED.
5. Increasing the DRIVE control will add harmonic richness to your sound.
Turning up the DRIVE also increases volume. Re-adjust the MASTER volume
after adjusting the DRIVE.
6. Adjust the tone controls to your liking. Keep in mind that turning up a tone
control isn't always the answer. Sometimes turning down one of the MID
controls will get you the sound you want.
7. Need more volume? There is a limit to the amount of volume a speaker can
produce and driving a speaker beyond it's limit can damage it. Even though
these are powerful amplifiers, adding another speaker is the only way for
substantially more output. Doubling your speakers increases your acoustic
output by a factor of four.
Have fun exploring the features and sounds of your BX/MB amp. Take the
time with your new amp to realize it's full potential.
BX250 and MB series MicroBass Amplifiers
MB10
BX250 HEAD
MB15
RECEIVING INSPECTION—read before getting started
INSPECT YOUR UNIT FOR DAMAGE which may have occurred during shipping. If damage
is found, please notify the shipping company and CARVIN immediately.
SAVE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship your
unit, always use the original carton and packing material. This will provide the best possible
protection during shipment. CARVIN and the shipping company are not liable for any damage
caused by improper packing.
SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.
SHIPMENT SHORTAGE. If you find items missing, they may have been shipped separately.
Please allow several days for the rest of your order to arrive before inquiring.
RECORD THE SERIAL NUMBER on the enclosed warranty card for your records. Keep your
portion of the card and return the portion with your name and comments to us.
USA customers register online at: www.carvinaudio.com/pages/registration
SPECIFICATIONS:
OUTPUT POWER (all models)
8ohms, THD <1.0% 200w
4ohms, THD <1.0% 250w
Combo Speaker Configuration: MB10: 2-way; 10" LF / 1" NEO HF
(all models 8 ohms) MB15: 2-way; 15" LF / 1" NEO HF
MB12: 3-way; 12" LF / 6.5" NEO MID / 1" NEO HF
MB210: 2-way; 2x10" LF / 1" NEO HF
Input Impedance:
Drive Control: Varies input gain and harmonic content
Tone Controls: CONTOUR pre-shape
BASS 50Hz
2 semi-parametric MIDs: 50Hz-500Hz / 200Hz-2kHz
TREBLE 10kHz
AC Requirements: 90 to 250VAC 50/60 Hz
Power Requirements: 200VA
Dimensions BX250 (HEAD): 3.7"H x 10"W x 7.25"D (93 x 254 x184mm)
MB10: 18.5"H x 12.75"W x 11.5"D (470 x 324 x 280mm)
MB12: 18.5"H x 17"W x 12"D (470 x 432 x 305mm)
MB15: 18.5"H x 17"W x 12"D (470 x 432 x 305mm)
MB210: 24.5"H x 12.75"W x 11.5"D (622 x 324 x 292mm)
Weight : BX250 (HEAD): 3.2 lbs. (1.5 kgs)
MB10: 26.1 lbs. (11.85 kgs)
MB12: 30.5 lbs. (13.85 kgs)
MB15: 32.6 lbs. (14.8 kgs)
MB210: 36 lbs. (16.33 kgs)
Warranty: One year parts and labor
Extension speaker cabs: 115MBE 1x15", 210MBE 2x10"
Optional Accessories:
Vinyl covers: CVMB10, CVMB12, CVMB15, CVMB210
16262 WEST BERNARDO DR. SAN DIEGO, CA 92127
800-854-2235 CARVINAUDIO.COM

USER MANUAL

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>200K
MB12