Behringer MDX2200 user manual Before you begin, Design concept, High quality components and design

COMPOSER PRO MDX2200

1.1 Before you begin

The BEHRINGER COMPOSER PRO MDX2200 was carefully packed in the factory, in order to ensure safe transport. Nevertheless, should the box show signs of damage please check the equipment itself immediately for any signs of external damage.

If the unit is damaged, please do not return it to us, but notify your dealer and the shipping company immediately, otherwise claims for damage or replacement may not be granted. Shipping claims must be made by the consignee.

Be sure that there is enough space around the unit for cooling and please do not place the COMPOSER PRO on high-temperature devices such as power amplifiers, etc. to avoid overheating.

Before connecting the COMPOSER PRO to the mains, please carefully check that your equipment is set to the correct supply voltage!

The fuse holder on the female mains connector has 3 triangular markings. Two of these triangles are opposite each other. The MDX2200 is set to the operating voltage shown next to these markings. It can be set to another voltage by turning the fuse holder through 180°. CAUTION: this does not apply to export models, which were designed e.g. only for a mains voltage of 115 V!

Connection to the mains is made by means of a mains cable with an IEC receptacle which complies with the appropriate safety regulations.

Please note that all units must be grounded properly. For your own safety, you should never remove any ground connectors from electrical devices or power cords or render them in- operative.

1.2 Design concept

1.2.1 High quality components and design

The philosophy behind BEHRINGER products guarantees a no-compromise circuit design and employs the best choice of components. The operational amplifiers NJM4580 which are used in the COMPOSER PRO, are exceptional. They boast extreme linearity and very low distortion characteristics. The most important aspect of the COMPOSER PRO design is a radical VCA implementation which results in outstanding technical specification and excellent performance. To complement this design the choice of components includes high tolerance resistors and capacitors, detent potentiometers, gold plated relay contacts and several other stringently selected elements.

For the first time, the COMPOSER PRO MDX 2200 uses SMD technology (Surface Mounted Device). These sub-miniature components known from aerospace technology allow for an extreme packing density, plus the unit’s reliability could be improved. Additionally, the unit is manufactured in compliance with a ISO9000 certified management system.

1.2.2 Failsafe relays

Failsafe relays have been incorporated into the design of the BEHRINGER COMPOSER PRO, which automatically and silently bypass the unit in the event of power supply disconnection or failure. These relays are also active at switch-on to isolate the COMPOSER PRO until the power rails have settled, thus preventing the possibility of a potentially damaging switch-on thump.

1.2.3 Balanced inputs and outputs

As standard, the BEHRINGER COMPOSER PRO is installed with electronically servo-balanced inputs and outputs. The new circuit design features automatic hum and noise reduction for balanced signals and thus allows for trouble-free operation, even at high operating levels. Externally induced mains hum etc. will be effectively suppressed. The automatic servo-function recognizes the presence of unbalanced connectors and adjusts the nominal level internally to avoid level differences between the input and output signals (correction 6 dB).

8 1. INTRODUCTION