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Summary of Contents for leema-acoustics Hydra
- Page 1 HANDBOOK Leema Acoustics Hydra Power Amplifier...
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Page 3: Table Of Contents
General Information ............................. 2 Conformity Statement, Environmental, Made in the UK, Contact Us ............2 Introduction ..............................3 Safety Advice ..............................4 Hydra Overview ............................. 5 Installation ..............................6 Connections ..............................7 AV Direct..............................7 Multi 1,Multi 2, Pre-Out, Bi-Amp, Loudspeakers ..................9 Controls .............................. -
Page 4: Declaration Of Conformity
HYDRA General Declaration of Conformity We hereby declare that the product to which this declaration relates, is in conformity with the following standards: EN60065, EN55013, EN55020, EN61000-3-2, EN61000-3-3. The product design also follows the provisions of 73/23/EEC, 89/336/EEC and 93/68/EEC Directives. -
Page 5: Introduction
HYDRA Introduction Introduction Congratulations on your purchase of a Leema Hydra amplifier. The Leema range of products has been painstakingly engineered in the United Kingdom to offer genuine state-of-the-art performance. Partnered with suitable equipment, Leema amplification will provide audio performance far beyond that of their competitors and will equal or better the performance of products costing many times their purchase price. -
Page 6: Safety Advice
User installation and safety advice Please ensure that the mains voltage of your new Hydra amplifier is correct for your region. The setting is displayed on a label below the mains power inlet. The mains voltage setting is not user adjustable, therefore the amplifier must be returned to the manufacturer if any changes are required. -
Page 7: Hydra Overview
Hydra overview The Leema Hydra is a very high power output, microprocessor controlled, stereo power amplifier. Thanks to the LIPS (Leema intelligent protocol system) interface, it can be used to bi-Amplify a Tucana in an audiophile stereo system, act as the power amplifier in a stereo pre-power combination or become part of a stunning home cinema or surround music system. -
Page 8: Installation
When the AV input is selected, the volume level is preset. If a fixed level source is When the Hydra is used as a connected here e.g. a CD slave in a Pre-Power or Bi-Amp player, the resulting... - Page 9 Hydra is used as a fixed level power amplifier, e.g. in a pre-power or bi-amp configuration. The Hydra has an internal link which must be correctly set either by the factory or by your dealer, to configure the unit for fixed level or for normal operation.
- Page 10 Connections MULTI 1> In a full surround system consisting of a Tucana, Hydra and Corvus, Multi 1 is used to connect the analogue outputs of a multi-channel source such as a DVD-A, SACD or DVD player equipped with onboard multi-channel decoding. In such a system the front left and right outputs from the source machine would connect to the Multi 1 inputs of the Tucana.
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Page 11: Controls
Loudspeaker terminals There are two pairs of shrouded loudspeaker terminals on the Hydra's rear panel, one pair for the left loudspeaker and one pair for the right loudspeaker. They can accept 4mm banana type plugs or bare wire connections, however the 4mm banana plug holes are fitted with plastic plugs to comply with BSEN60065 safety regulations. -
Page 12: Controls
Tucana with it’s partnering Hydra covering front left and right duties, a pair of Hydras for the surround left and right channels and a Corvus and Hydra for the front centre. The Hydras would then need to power on and off in the correct sequence with their partnering units. - Page 13 230 VAC 50/60Hz MAX 600W LEFT SURROUND RIGHT SURROUND CAUTION VORSICHT SERIAL No.: PRECISION AUDIO COMPONENT MANUFACTURED IN THE UNITED KINGDOM BY LEEMA ELECTRO ACOUSTICS LIMITED REMOVE POWER VOR DEM ÖFFNEN BEFORE OPENING NETZSTECKER ZIEHEN HYDRA BI-AMPING A TUCANA USING A HYDRA...
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Page 14: Technical Discussion
HYDRA Topology Technical Discussion Topology Starting with the pre-amp and control stage, input selection is performed by gold over silver contact relays under control of the microprocessor. The audio is then buffered by audiophile quality OP275 amplifiers in order to present the Burr Brown precision attenuators with a low impedance drive signal. - Page 15 Contrary to another common misconception, ‘timing’ cannot be compromised. The square wave performance of an amplifier is the ultimate timing test. A look at the square wave performance of a Hydra is testament to the time domain performance of the design. If multiple devices did cause errors in the time domain, the resultant square wave would be significantly degraded.
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Page 16: Lips
Tucana, to control other items in a chain. Leema’s 5.2 surround system is a good example, where a Tucana controls a Hydra and Corvus. Key information including volume level, input selection and power control is passed through the bus enabling other units to operate in synchronisation. -
Page 17: Lips
Value = 40 Volume header. Valid command values are 0(mute) to 248(maximum volume) Value = 50 Serial Pass Through. When a Tucana, Hydra or Corvus receives this header, the header and value are passed on up the bus. This enables future expansion options. -
Page 18: Audio Specifications
HYDRA Audio Specifications Audio Specifications Power Output: 8 ohms: 148 Watts RMS per channel, 4 ohms: 285 Watts RMS per channel Minimum load impedance: 2 ohms. Output Current: greater than +/- 50 Amps Frequency response +0/-3dB @ 1W: 5Hz - 80KHz...
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