Samson MXS 2800 User manual
3400 Watt Stereo Power Amplifier
OWNER'S MANUAL
Copyright 2014, Samson Technologies Corp.
v1.1
Samson Technologies Corp.
45 Gilpin Ave
Hauppauge, NY 11788
www.samsontech.com
3
MXS2800 Power Amplifier
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. This apparatus shall not be exposed to dripping or splashing liquid and no object
filled with liquid, such as a vase, should be placed on the apparatus.
6. Clean only with a dry cloth.
7. Do not block any of the ventilation openings. Install in accordance with the
manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or
other apparatuses (including amplifiers) that produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10. Unplug this apparatus during lightning storms or when not in use for long periods of
time.
11. Do not override the intended purpose of the polarized or grounding-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 third prong,
is provided for your safety. If the provided plug does not fit your outlet, consult an
electrician to replace the obsolete outlet.
12. Protect the power cord from being walked on or pinched, particularly at the prongs,
convenience receptacles, the point where they exit from the apparatus.
13. Use only with the cart stand, tripod bracket, or table specified by
the manufacture, or sold with the apparatus. When a cart is used,
utilize caution when moving the cart/apparatus combination to
avoid injury from tip-over.
14. Refer all servicing to qualified service personnel. Servicing is
required if the apparatus has been damaged in any way, such as
power-supply cord or plug breakage, damage due to liquid or objects falling onto
the apparatus, exposure to rain or moisture, or if the apparatus does not operate
normally, or has been dropped.
15. MAINS DISCONNECT: The plug should remain readily operable. For rack-mount or
installation where plug is not accessible, an all-pole mains switch with a contact
separation of at least 3 mm in each pole shall be incorporated into the electrical
installation of the rack or building.
16. FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE:
Replace fuse with same type and rating only.
17. MULTIPLE-INPUT VOLTAGE: This equipment may require the use of a different
line cord, attachment plug, or both, depending on the available power source at
installation. Connect this equipment only to the power source indicated on the
equipment rear panel. To reduce the risk of fire or electric shock, refer servicing to
qualified service personnel or equivalent.
Important Safety Information
4
Important Safety Information
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO
USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This lightning flash with arrowhead symbol within an equilateral triangle is intended to alert
the user to the presence of non-insulated “dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point within an equilateral triangle is intended to alert the user to the pres-
ence of important operating and maintenance instructions in the literature accompanying
the appliance.
AVIS
RISQUE DE CHOC ÉLECTRONIQUE -
NE PAS OUVRIR
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES
CLASS B. OPERATION IS SUBJECT TO THE FOLLOWING TWO
CONDITIONS:
(1) THIS DEVICE MUST NOT CAUSE HARMFUL
INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE
RECEIVED INCLUDING INTERFERENCE THAT MAY CAUSE
UNDESIRED OPERATION. SUITABLE FOR HOME OR OFFICE
USE.
If you want to dispose this product, do not mix it with general household waste. There is a
separate collection system for used electronic products in accordance with legislation that
requires proper treatment, recovery and recycling.
Private household in the 28 member states of the EU, in Switzerland and Norway may
return their used electronic products free of charge to designated collection facilities or to a retailer
(if you purchase a similar new one).
For Countries not mentioned above, please contact your local authorities for a correct method of
disposal.
By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery
and recycling and thus prevent potential negative effects on the environment and human health.
5
MXS2800 Power Amplifier
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Getting Started with the MXS2800 . . . . . . . . . . . . . . . . . . . . . 8
Front Callouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rear Callouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Bridge Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
System Setup Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Wiring Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6
The Samson MXS2800 is a stereo power amplifier boasting an abundance of power in a
lightweight single rack-space design. It has been designed to provide solid, clean output
with low distortion and wide dynamic range, along with the dependability demanded by
professional front-of-house engineers and installers.
The efficient Class D design provides 1700 watts of stereo power safely into loads as
low as 2 ohms, over the full audio frequency band, from 20 Hz to 20 kHz. Connections
are made via both balanced XLR and RCA input connectors and Speakon® output
connectors. To help you set the correct operating levels, the MXS 2800 amplifiers
include front panel Signal Level, Peak and Protection LED indicators.
Like all Samson power amplifiers, the MXS2800’s internal electronics are based around
a serious power-core, with a robust power supply built to handle large current demand
from bass frequencies. To keep the MXS2800 amplifiers running cool, the design
employs forced-air cooling via a temperature-sensitive, variable speed fan, which greatly
reduces the chance of thermal and overheating problems. Multi-stage protection for
power-up, short circuit, DC output, over current, and thermal, assures high reliability
under the most grueling situations.
Optimized for portable sound applications but is perfectly suited for live sound venues,
houses of worship, commercial installations. The MXS2800 amplifiers will deliver
reliable power from gig-to-gig and venue-to-venue. In the following pages, you’ll find a
detailed description of the many features of the MXS2800 power amplifier, as well as a
guided tour through its front and rear panels, step-by-step instructions for its setup and
use, and full specifications.
We recommend you keep the following records for reference, as well as a copy of your
sales receipt.
Serial number: ____________________________________________
Date of purchase: __________________________________________
Dealer name: _____________________________________________
With proper care and maintenance, your MXS2800 power amplifier will operate trouble-
free for many years. Should your amplifier ever require servicing, a Return Authori-
zation (RA) number must be obtained before shipping your unit to Samson. Without
this number, the unit will not be accepted. Please call Samson at 1-800-3SAMSON
(1-800-372-6766) for an RA number prior to shipping your unit. Please retain the
original packing materials and, if possible, return the unit in its original carton. If your
MXS2800 amplifier was purchased outside of the United States, contact your local
distributor for warranty details and service information.
Introduction
7
MXS2800 Power Amplifier
Features
• Lightweight, high-power, single rack-space Class D power amplifier.
• 2 x 1700 Watts at 2Ω, 2 x 850 Watts at 4Ω
3400 Watts at 4Ω, 1700 Watts at 8Ω bridged mono
• Clean, crisp sound, 0.02% THD, dynamic range of 100 dB, and frequency response
of 20 Hz to 20 kHz, guarantee ultra-clean sound quality
• Independent detent level controls for each channel allow precision adjustments
• Stereo and Bridge Mono operation.
• LED signal indicators for each channel continuously display input signals and output
levels
• Four-point protection circuitry (Short Circuit, DC Output, Over Current, Thermal)
• Built-in limiter provides peak power delivery while minimizing distortion
• Temperature-sensitive, variable speed fan provides reliable performance without
thermal and overheating problems
• Protection relay circuitry that guards against overheating or faulty wiring conditions
and also prevents “thumps” when powering on or off
• Inputs for each channel accommodate both balanced XLR or RCA connectors
• Output connections are made via Speakon® connectors
• The MXS2800 can be mounted in any standard 19” rack, making it easy to integrate
the amp into any fixed or traveling PA rig
• Rugged construction makes the MXS2800 completely roadworthy
8
Getting Started with the MXS2800
Setting up your MXS2800 amplifier is a simple procedure which takes only a few
minutes:
Remove all packing materials (save them in case your units needs future service) and
decide where the amplifier is to be physically placed—it can be used free-standing
or mounted in a standard 19” rack, requiring a single rack space. When installed,
make sure that both the front and rear panels are unobstructed and that there is good
ventilation around the entire unit.
When making speaker connections, use the Speakon®
output connectors on the rear panel. It is never a good
idea to power up any amplifier that is not connected to
loudspeakers.
To make the signal input connections, use the input connectors on
the rear panel.
On the front panel of the MXS2800, turn both Channel level controls
fully counterclockwise (to their minimum setting). Then connect the
supplied heavy-gauge 3-pin power cable to the rear panel AC input
and to any grounded AC socket.
Turn the Power switch ON.
Apply an input signal to the MXS2800 at or about +4dBu (if sending
signal from a mixer, drive the output meters at approximately 0 vu). While the input
signal is present, slowly raise the Channel level controls until the desired sound level is
achieved.
For the best signal-to-noise
ratio, the MXS2800 should
normally be run with the
Channel Input controls at or
near maximum (fully clockwise)
and the PEAK segments should
light occasionally (but not
frequently) during maximum
levels.
9
MXS2800 Power Amplifier
Front Callouts
6 4 3 1
2
5
1. POWER Switch - Use this push button switch to power the MXS2800 amplifier on or
off
2. Channel Level Controls - Two detent controls to precisely adjust the output level of
each channel.
3. PEAK - The PEAK indicator lights whenever the channel is outputting signal at full
strength. For the best signal-to-noise ratio, the right (PEAK) segment should light
occasionally during peak levels; if it lights frequently, you may be overloading the
amplifier and a distorted (“clipped”) signal is probably being output.
4. Audio Indicators - The front panel LED indicators continuously monitor the power
output level for the corresponding channel. For optimum signal-to-noise ratio, set
the level controls so that -6dB is constantly illuminated, with occasional, but not
steady excursions to the red PEAK segment.
5. ACTIVE Indicators - These indicators will illuminate when the power switch is turned
on and the unit is ready to pass audio.
6. PROTECT Indicators - These LED indicators will light when a fault (Short Circuit, DC
Output, Over Current, or Thermal) is detected. The indicators will also light when
the amplifier is first turned on, until the amplifier is ready to pass audio and the
ACTIVE indicators illuminate.
10
Rear Callouts
3 1 14
25
1. Input Connectors - Connect incoming signal to these electronically balanced XLR or
unbalanced RCA jacks.
2. MODE Switch - For normal operation, place this three-way switch in the STEREO posi-
tion. When placed in its BRIDGE position, the signal arriving at the Ch A input only
is again routed to both power amplifiers (the Ch B input is ignored), but the two
power amplifiers are bridged together.
3. Exhaust Fan - This variable-speed fan provides cooling to amplifier. Make sure that
both the front and rear panels are kept free of all obstructions and that cool, fresh
air is accessible at all times.
4. Speakon® Output Connectors - Use these to connect each channel of the amplifier to
your loudspeakers.
5. AC Input - Connect the supplied heavy-gauge 3-pin “IEC” power cable here
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