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Meridian Product Brochure: Power Meridian’s long advocacy of active loudspeakers has always been matched by its commitment to designing innovative amplifiers for use with passive speaker systems. In many respects the design challenges are greater because the amplifier designer cannot be certain what speaker impedances will be encountered. To ensure the widest possible compatibility, our smart, fast amplifiers relish difficult loads. 558 Multichannel Power Amplifier Modern multichannel music and film systems have complex amplification requirements. Film soundtracks demand speed, power and wide dynamic range. High performance music systems also need these attributes, in addition to an ability to convey low-level detail and a convincing sense of space. |
Product/Brochure/ Product Brochure: Power
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To meet these tough requirements the new 558 Multichannel Amplifier was meticulously designed utilizing the latest technological advances in the Meridian tradition of uncompromised performance. To deliver stable dynamics the 558 uses twin 1.2kVA toroidal mains transformers and no fewer than 50 pairs of hand-matched output devices. Its switchable bridged modes make it flexible and a precision topology brings nuance and delicacy to raw power. The 558 can be configured for either five channel output at 200W per channel into 8 ohms, or for two channels at greater than 500W into 8 ohms plus a single channel at 200W. For seven-channel applications it is possible to run two 558s with the front three channels bridged. Other features include: switchable balanced and single-ended inputs; four-way (biwireable) binding posts for all loudspeaker outputs; soft start and full thermal management; optical coupling of protection and control circuits to allow five-way mono construction; and standby control triggerable by 562V.2, 561 or 861. The 558 is also rack mountable for ease of installation. Every detail has been attended to in the design of the 558, with the trademark care and dedication that have made Meridian a renowned leader in the audio industry. Output Stereo or Bridged: 200W into 8; 1000W into 4Bridged. XLR or phono input. Twin outputs for bi-wiring. Distortion <0.05%; signal-to-noise ratio -100dB. Fully protected against DC and thermal overload. Soft start using proprietary Meridian circuit. Controls: Front-panel controls for Power On/Off; rear panel links for Bridge/Stereo Mode. Dimensions: 199mm (7.84in) H, front panel 480 (18.9) W, chassis 441 (17.36) W, 466 (18.35) D.
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557 200W Stereo Power Amplifier Our dual-mono 200-watt 557 is a prime example of amplifier capability. Each over-specified output stage uses 8 high-power transistors; these combined with a massive low-noise 1.6kVA toroidal transformer let the 557 deliver currents over 30A cleanly into difficult loads below 2. Internal bridging allows full balanced operation and more than 1000W into 4. Balanced and unbalanced inputs as well as twin outputs for bi-wiring are provided. Output Stereo or Bridged: 200W into 8; 1000W into 4Bridged. XLR or phono input. Twin outputs for bi-wiring. Distortion <0.05%; signal-to-noise ratio -100dB. Fully protected against DC and thermal overload. Soft start using proprietary Meridian circuit. Controls: Rear-panel controls for Power On/Off; Bridge/Stereo Mode. Dimensions: 174mm (6.85in) H, 385 (15.16) W, 306 (12.05) D.
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559 300W Stereo Power Amplifier Meridian is proud to introduce this fine new two-channel amplifier which can be used alone or to complement the multichannel 558.2 where more channels are required. The amplifier is presented in a rack mount size format and features silent cooling. The core design of 559 employs a radical new amplifier topology which has been created to meet the demands of new audio formats and was first featured in the Meridian flagship DSP8000 loudspeaker. The superb linearity, stability and dynamic range of 559 are all essential to do justice to high resolution source material from new formats like DVD-Audio and SACD. |
559
Handbook
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556 100W Stereo Power Amplifier The Meridian 556 houses two 100W amplifiers in a dual mono construction. The output stage uses 10 high-power transistors. The power delivery of this amplifier makes it ideal for driving difficult loudspeaker loads. A high-precision fast DC-precise input stage is combined with a fully complementary amplification and output stage giving exceptional transparency and depth. Output: 100W per channel into 8, distortion < 0.05%, signal-to-noise ratio <-90dB. Unbalanced Inputs on phono 1.77V rms. Fully protected against DC and thermal overload. Error corrected output stage. Dimensions: 88mm (3.46in) H, 385 (15.16) W, 306 (12.05) D.
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505 160W Mono Power Amplifier Dedicating a complete power supply to each channel of the system ensures an uncompromised level of spatiality, dynamics and clarity to this 160W monoblock amplifier. Output: 160W into 8, 260W into 4, distortion <0.05%, signal-to-noise ratio <-90dB. Inputs balanced on XLR sensitivity 2.66V rms; Unbalanced on phono sensitivity 1.27V rms. Fully protected against DC and thermal overload. Twin outputs for bi-wiring. 3 pairs of output devices per side. Error corrected output stage. Dimensions: 88mm (3.46) H, 385 (15.16) W, 306 (12.05) D.
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551 Integrated Amplifier The 551 uses a dual-mono construction similar to the 557 but includes a high-quality preamp similar to the 501. A separate headphone amplifier allows you to enjoy music without disturbing others. The 551’s multiroom software operates systems in two zones. High-quality MC or MM phono stages are available. Output: 65W into 8, distortion <0.05%, signal-to-noise <-90dB. Preamp audio output 1.4V rms using low distortion volume control, 99 x 1dB steps. Audio inputs: 6 x 20k, adjustable sensitivity. Controls: Source selection, Copy for independent control of tape output, Speakers off, Display, Mute, Volume and Off. Display: 4 character alphanumeric. Dimensions: 88mm (3.46) H, 321 (12.64) W, 320 (12.6) D.
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