DUTCH MSM1 Посібник - Сторінка 3

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Operation:

The MSM1 is a Mid/Side encoder/decoder that let's you process a device connected to the

inserts in either stereo mode or M/S mode. When set to stereo (encode/decode off), the

MSM1 is 100% passive, when set to MS, it will pass the active mid/side circuitry. Both

encoder and decoder can be used separately from each-other. In normal MS mode, both

enoder and decoder should be active.

MS encode

When the 'MS encode' button is pushed, the MS encoder section will become active. The left

channel is Mid, right is Side.

MS decode

When the 'MS decode' button is pushed, the MS decoder section will become active. The MS

encoded signal will decoded to stereo again.

Mute M:

The 'mute m' button will mute the mid channel so that you listen to just the side

information.

Mute S:

The 'mute S' button will mute the side channel so that you listen to just the mid information.

Width:

When you enable the 'width' button, the width circuit becomes active

and you can change the gain of the side channel and so, making it

more wide or narrow. We chose to use a dedicated width enable

button for A/B purposes. The width gain range is -6.5/+3.5 with 23

steps. This way you have more precise control then with course steps

and a big range you probably won't need.

Power:

The 'power' button powers up the unit. When powered off, the MSM1 still passes audio

which runs through the inserts.

Technical:

Hardware:

This device is built around mostly passive circuits, but some sections need to be active, but

always with transparency in mind. The sturdy frontpanel-switches have, depending on their

function, 2 color leds for visual feedback. All relays are high sensitive, long-life (15.000.000

cycles) Omron Relays.

Stepped switches are military grade Blore Edwards for long life and really nice mechanical

feel. In and output connectors are gold-plated Neutrik, DB25 inserts are gold-plated wurth

connectors. Active circuits make use of analog devices and THAT drivers. The mid/side

circuit

based

the

well-known

circuit

from

Wayne

Kirkwood,

but

with

additions/modifications.

The internal PSU section is build around industrial-grade Meanwell SMPS's which run way

more silent and are way more efficient then old-school linear PSU's. Both the relays/leds

and active circuit PSU's are running on their own separate PSU.

When this device is used in passive mode, so with MS encode and decode off, it's 100%

passive and only relay-contacts are inline. This means it's basically a straight wire.