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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.
RISK OF ELECTRIC SHOCK – DO NOT OPEN
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.
The equipment has been designed for use in moderate climates and in domestic situations. Only use at an altitude not exceeding 2000m.
Do not place the power amplifier:
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.
The Meridian Eight Channel Amplifier 258 is a powerful, highperformance, 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.
The Eight Channel Amplifier 258 is supplied with the following accessories:
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.
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.
The following diagram gives details of the back panel connections:
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 4Ω and 8Ω, using Phoenix pluggable 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 The outputs will unmute when theamplifier 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 backpanel and then on again. |
Use this application to connect up a four-zone system using four Meridian 218 Zone Controllers, using the 258 Multi Channel Power Amplifier to power one pair of loudspeakers for each zone.
You can now control the system via the network from a Meridian Sooloos system.
Use this application to connect an 8-zone audio matrix switch to two 258 Multi Channel Power Amplifiers, to drive the pairs of loudspeakers in each of eight zones.
Audio inputs
Audio outputs
Characteristics
Control signals
Controls
Physical
Power
This product is available factory pre-set in the following voltage options:
Meridian Audio reserves the right to amend product specifications at any time.
Acknowledgements
Meridian is a registered trade mark of Meridian Audio Ltd.
SpeakerLink is a trade mark of Meridian Audio Ltd.
Copyright © 2016 Meridian Audio Ltd.
Part number: P88450
Designed and manufactured in the UK by Meridian Audio Ltd. Meridian Audio reserves the right to make changes and improvements to any of the products described in this document without prior notice.
Register your Meridian Eight Channel Amplifier 258 at:
www.meridian-audio.com/support
Sales and service in the UK
Meridian Audio Ltd
Latham Road
Huntingdon
Cambridgeshire
PE29 6YE, England
Tel +44 (0)1480 445678
Fax +44 (0)1480 445686
Sales and service in the USA
MAI
351 Thornton Road
Suite 108
Lithia Springs, GA
30122
United States
Tel 404-344-7111
Fax 404-346-7111
Visit us on the Web:
http://www.meridian-audio.com/
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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