Meridian 258 Manual

Meridian Modtager 258

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Side 1/2

IP20 Equipment

Climate

The equipment has been designed for use in moderate climates

and in domestic situations.

≤2000m

Only use at an altitude not exceeding 2000m.

Safety warnings

Do not expose the unit to dripping or splashing.

Do not place any object filled with liquid, such as a vase, on the unit.

Do not place naked flame sources, such as lighted candles, on

the unit.

To avoid overheating

Do not position the product in direct sunlight.

Do not position the product near heat sources, such as a

radiator.

Leave at least 10cm around the product to ensure sufficient

ventilation.

Siting

Do not place the power amplifier:

In direct sunlight.

Near heat sources, such as a radiator.

On a soft surface such as a carpet.

Radio interference

FCC Warning: This equipment generates and can radiate radio

frequency energy and if not installed and used correctly in

accordance with our instructions may cause interference to radio

communications or radio and television reception. It has been

type-tested and complies with the limits set out in Subpart J,

Part 15 of FCC rules for a Class B computing device. These

limits are intended to provide reasonable protection against such

interference in home installations.

EEC: This product has been designed and type-tested to comply

with the limits set out in EN55032:2015 and EN55024:2010 +

A1:2015.

•

Back panel

The following diagram gives details of the back panel connections:

OutputInput

Chann l 4

OutputInput

Channel 3

OutputInput

Channel 1

OutputInput

Channel 5

OutputInput

Channel 6

OutputInput

Channel 7

OutputInput

Channel 8

Trigger input

5 - 30V ac or dc Serial Number

Tested

Voltage

OutputInput

Channel 2

Output 8 Output 7 Output 6 Output 5 Output 4 Output 3 Output 2 Output 1 Fuse

Trigger

input

Input 1Input 2Input 3Input 4Input 5Input 6Input 7Input 8

Mains

input

On/off

switch

Introduction

The Meridian Eight Channel Amplifier 258 is a powerful, high-

performance, cool-running Class D amplifier that can deliver more than

100W per channel into 4Ω, or more than 70W per channel into 8Ω.

The featured high efficiency (>95%) Class D amplifiers produce

very little heat, allowing fanless operation with eight independent

channels in a 1U enclosure. It is primarily designed to power

multiple zones.

The 258 uses audiophile components, resulting in a level of

performance typically associated with power amplifiers offered

at a significantly higher price. Separate reservoir capacitors offer

the advantages of a multiple-mono construction in a compact

package. This also keeps signal paths very short and improves

isolation between channels.

The 258 uses a linear power supply, which provides isolation from

the AC supply and offers both sound quality and intrinsic durability.

It is based on a massive low-noise toroidal power transformer, with

an electronic trip for protection against short circuits or overheating.

An indicator on the front panel shows the status as standby, on, or

hot. Back panel indicators show the status of each channel.

Unpacking

The Eight Channel Amplifier 258 is supplied with the following

accessories:

Power cord.

Self-adhesive feet for non-rack installation.

Mating speaker connectors.

This manual.

If any of these items are missing please contact your retailer.

NOTE: You should retain the packaging in case you need to

transport the unit.

Standby

Once set up, the power amplifier can be left in standby as it

consumes minimal power in this mode.

If you are not going to use the power amplifier for a period of

several days you should switch off the unit completely, at the

back panel and disconnect it from the AC power supply.

•

Audio inputs

Use this input To connect to this

Input 1 to Input 8 The outputs of sources with

unbalanced outputs, using phono

cables.

Loudspeaker outputs

Use this output To connect to this

Output 1 +/– to Output 8 +/–

Loudspeakers of between 4 Ω

and 8 , using Phoenix pluggable Ω

2-way terminal blocks, 12AWG/

20A.

Communications connections

Use this connection To connect to this

Trigger input A 12V trigger output from a

preamplifier or control system

which can be used to bring

the power amplifier out of

standby.

Indicators

An indicator for each channel on the back panel shows that the

amplifier is out of standby and that the Class D modulator for that

channel is running.

Operation

After supplying power the amplifier comes out of standby

automatically after four seconds.

The indicator on the front panel shows the status:

Indicator Status Explanation

Blue Standby. Press the button to switch the

amplifier between on and standby.

White Normal. Normal operation.

Red Overheated. Outputs muted.

The outputs will unmute when the

amplifier has cooled down.

Blank Tripped. Amplifier off, caused by a fault,

such as an input with a DC offset

or a shorted output.

Correct the fault, then reset by

turning off the power at the back

panel and then on again.

Important safety instructions

Read the instructions.

Keep these instructions.

Follow all instructions.

Do not use this apparatus near water.

Clean only with a dry cloth.

Install only in accordance with the manufacturer’s instructions.

Refer all servicing to approved service personnel.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

This apparatus has been designed with Class 1 construction and

must be connected to a mains socket outlet with a protective

earthing connection (the third grounding pin).

This apparatus uses a single-pole power switch. As a result it is

not isolated from AC mains power when switched off at the rear

panel. The apparatus may be isolated from mains power either by

unplugging the power connector from the rear of the unit, or by

unplugging the connector at the opposing end of the power cord

or cable from its supply outlet. As a result, either or both of these

connectors should remain accessible.

Safety warnings

WARNING!

RISK OF ELECTRIC SHOCK – DO NOT OPEN

ATTENTION!

NE PAS OUVRIR – RISQUE DE DÉCHARGE ÉLECTRIQUE

Caution: to reduce the risk of electric shock, do not remove

cover. No user serviceable parts inside. Refer servicing to

qualified service personnel.



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’s enclosure than may be of sufficient magnitude

to constitute a risk of electric 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 appliance.

•





Produkt Specifikationer

Mærke:	Meridian
Kategori:	Modtager
Model:	258

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