Markbass MB58R Combos Pure Series Owner’s Manual

: August 16, 2024
: Markbass

Table of Contents

Markbass MB58R Combos Pure Series
Product Information
Product Usage Instructions
Frequently Asked Questions (FAQ)
INTRODUCTION
IMPORTANT SAFETY INSTRUCTIONS
FRONT PANEL LITTLE MARK SBR – LITTLE MARK SBR COMBO
REAR PANEL LITTLE MARK SBR – LITTLE MARK SBR COMBO
TECHNICAL DETAILS
COMBOS: TECHNICAL DETAILS
TROUBLESHOOT/NG TIPS
BLOCK DIAGRAM
ABOUT COMPANY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Markbass MB58R Combos Pure Series

Product Information

The Little Mark 58R is a versatile and powerful bass amplifier designed for professional musicians. It is part of the Little Mark series, specifically the 58R model. With a compact design and advanced features, this amplifier delivers high-quality sound performance for various musical styles.

Product Usage Instructions

Safety Instructions:

Read and keep these instructions for reference.
Follow all warnings and instructions provided in the manual.
Avoid using the amplifier near water sources.
Clean the amplifier only with a dry cloth.
Ensure proper ventilation for the amplifier.
Avoid placing the amplifier near heat sources.
Do not modify the plug or power cord; consult an electrician if needed.
Avoid pinching or damaging the power cord.
Use only manufacturer-specified attachments and accessories.
Unplug the apparatus during lightning storms or extended periods of inactivity.

Operation Instructions:

Connect the power cord to a suitable power outlet matching the voltage/fuse values.
Plug in your bass guitar to the designated input on the amplifier.
Adjust the volume, tone, and other controls as desired for your sound preference.
To protect your hearing and equipment, start with low volume settings and gradually increase.
If connecting external speakers, ensure compatibility with the amplifier’s output specifications.

Frequently Asked Questions (FAQ)

How do I change the voltage/fuse values on the amplifier?
Locate the voltage selector on the rear panel of the amplifier. Ensure it is set to the correct voltage before connecting to the power source. If unsure, consult the user manual or contact customer support for assistance.
Can I use the Little Mark 58R with other instruments besides bass guitars?
While primarily designed for bass guitars, the Little Mark 58R can be used with other instruments such as electric guitars or keyboards. Adjust the settings accordingly for best results.
What should I do if my amplifier stops working or malfunctions?
If you encounter any issues with your amplifier, such as power loss, unusual noises, or malfunctions, unplug it immediately and refer servicing to qualified personnel. Do not attempt to repair the amplifier yourself to prevent further damage or risks.

INTRODUCTION

The MB58R series is a further example of how Markbass is always one step ahead in innovating using state-of-the-art technologies. Once again Marco De Virgiliis with his pioneering soul has ma-naged to create this new series of products which, with the use of custom components born thanks to years of experience and research Markbass and the use of revolutionary materials with an eye to the future and the evironment, has really nailed the tone and power versus portability issue. The new LM MB58R amp new design features all the connections and controls on the front panel leaving on the rear panel only the speaker outs and AC power socket, offering optimal ergonomics and making everything more practical. This amp features updated 4 band EQ section, the new bi-band limiter paired with a 500 watt MPT power amp, a mute switch, and the 3 way rotary-switch that that includes the options of a Flat, Scooped or FSW (Footswitchable) EQ options, all in an high build quality and ultralight new chassis in ABS, a super portable package that weights only 2.17K-g/4.78lbs.

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions;
Keep these instructions;
Heed all warnings;
Follow all instructions;
Do not use this apparatus near water;
Clean only with dry cloth;
Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions;
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat;
Do not defeat the safety purpose of the polarized or ground-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet;
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus
Only use attachments/accessories specified by the manufacturer;
Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from the tip-over (and Fig 21 DU Tipping Cart Symbol).
Unplug this apparatus during lightning storms or when unused for long periods of time;
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped;
“WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE AND OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, SHOULD NOT BE PLACED ON THIS APPARATUS”.
TO COMPLETELY DISCONNECT THIS APPARATUS FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE;
THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REAMIN READILY ACCESSIBLE.
In case of voltage selector make sure the switch on the rear panel is on the correct voltage before connecting it to the AC power, and the fuse is the right value for that voltage (This selector is not available on the 100V version). Please change the voltage/fuse values label located near the voltage selector matching the voltage/fuse values when you need to change the voltage of the apparatus.
“WARNING: THIS APPARATUS MUST BE SECURELY ATTACHED TO THE FLOOR OR WALL IN ACCORDANCE WITH INSTALLATION ISTRUCTION. TIPPING, SHAKING, OR ROCKING THE MACHINE MAY CAUSE INJURY OR DEATH.”
“CAUTION: THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED SERVICE PERSONNEL ONLY. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN TEH OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO”

MORE INFORMATION

For warranty and service information, please contact your local Markbass distributor (contact information available at www.markbass.it). For more technical information, please visit us at www.markbass.it and fill out the form on the Support page.
We hope you enjoy your power amp and use it to make great music!
“The Lightning Flash with arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product enclosure that may be of suf?icient magnitude to constitute a risk of shock to persons.”
“The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.”
“To be used only with altitude not exceeding 2000 m”
To be used only where the climate is not tropical”

FRONT PANEL LITTLE MARK SBR – LITTLE MARK SBR COMBO

SEND EFFECT 1/4” JACK
RETURN EFFECT 1/4” JACK
LINE OUT XLR
LINE OUT PRE/POST EQUALIZATION CONTROL SWITCH
GROUND LIFT CONTROL SWITCH
UNBALANCED 1/4” JACK INPUT
GAIN KNOB
CLIP LED
3-WAY ROTARY SWITCH KNOW (FLAT/SCOOPED-MID/FSW)
SCOOPED-MID EQ LED
LOW EQUALIZATION CONTROL KNOB
MID LOW EQUALIZATION CONTROL KNOB
MID HIGH EQUALIZATION CONTROL KNOB
HIGH EQUALIZATION CONTROL KNOB
OLD SCHOOL FILTER
LINE OUT LEVEL KNOB
MASTER VOLUME LEVEL KNOB
MUTE SWITCH
FOOTSWITCH INPUT
MAIN ON/OFF SWITCH

REAR PANEL LITTLE MARK SBR – LITTLE MARK SBR COMBO

1. AC POWER SOCKET
2. COOLING SYSTEM FAN
3-4. SPEAKER OUTS 1/4” JACK
5. SPEAKER OUT SPEAKON TWO POLE

TECHNICAL DETAILS

INPUTS
- INPUT impedance: 1 Mohm, max. voltage: 9 Vpp
- RETURN impedance: 22 Kohm, max. voltage: 10 Vpp
CONTROLS
- GAIN –46 dB to +23 dB range
- LINE OUT level control on front panel
- PRE/POST EQ (for line out) switch on front panel
- GROUND LIFT switch on front panel
- MUTE SWITCH/FSW
- MASTER VOLUME
EQUALIZATION
- LOW center frequency 68 Hz; level: ±16 dB
- MID LOW center frequency 360 Hz; level: ±16 dB
- MID HIGH center frequency 800 Hz; level: ±16 dB
- HIGH center frequency 10 kHz; level: ±16 dB
- OLD SCHOOL max cut range: 250 Hz – 20 kHz
- 3 WAY SWITCH flat/scooped-mid/FSW
OUTPUTS
- SEND EFFECT unbalanced, max. voltage 20 Vpp
- LINE OUT balanced XLR, max. voltage 20 Vpp
- SPEAKER OUT 1x speakon + 2x 1/4” jack
OTHERS
- HEIGHT 2 rack units (3.19 in. / 81 mm)
- WIDTH 10.87 in. / 27.6 cm (19 in. / 48.3 cm with rack ears)
- DEPTH 10.16 in. / 25.8 cm
- WEIGHT 4.78 lbs / 2.17 kg
FOOTSWITCH (OPTIONAL) Flat/Scooped-Mid/Mute
OUTPUT POWER 500W RMS @ 4 ohm, 300W RMS @ 8 ohm (LITTLE MARK 58R /LITTLE MARK 58R COMBO)
POWER REQUIREMENT LITTLE MARK 58R, LITTLE MARK 58R COMBO
- 100V; 120V; 230V; 240V 50/60Hz
- (Voltage is factory preset according to region of sale).
- Markbass amps/combos are manufactured to be sold and used in the country of purchase,
- and are factory preset to that country’s voltage.
- Due to homologation issues, the voltage may not be changed.
FUSE LITTLE MARK58R, LITTLE MARK 58R COMBO
- EUROPE 4 A 250V T 5×20
- AUSTRALIA/UK 4 A 250V T 5×20
- USA/CANADA 8 A 250V T 5×20
- JAPAN 10 A 250VT 5×20

COMBOS: TECHNICAL DETAILS

COMBOS V SERIES

TROUBLESHOOT/NG TIPS

THERMAL PROTECTION
- SYMPTOM The amp gets hot and shuts down.
- PROBABLE CAUSE The amp is overheated, either as a result of inadequate ventilation or damage cooling system fan. When the amplifier cools down to a safe level, the amp will automatically restart.
- SUGGESTIONS Please verify that the fan is working properly, and that the cooling system ports are not obstructed.
CURRENT PROTECTION
- SYMPTOM The amp turns on, but there is no signal coming from the speaker/s.
- PROBABLE CAUSE Low impedance load (minimum impedance for Markbass amps is 4 ohms), or a bad speaker cable.
- SUGGESTIONS
- Please verify the impedance of the speaker/s connected to the amp. Note that two 4 ohm cabinets, or an 8 ohm and a 4 ohm cabinet, will result in an impedance below 4 ohms.
- Please check the speaker cable/s.
- After checking these two things, please turn the amp off and turn it on again.
  If the troubleshooting steps outlined above do not solve your problem, please contact your Markbass distributor/dealer for service information.
  For more TROUBLESHOOTING TIPS, please check the FAQ section on the SUPPORT page of our website at www.markbass.it