Moon i-5 Integrated Amplifier by Simaudio Ltd.

More catalogs by Simaudio Ltd. | Moon i-5 Integrated Amplifier | 8 pages | 2006-11-30

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Consumer Electronics > Home Audio > Amplifiers

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Simaudio Ltd., Moon i-5 Integrated

technical white paper moon i-5 integrated amplifier simaudio ltd 95 chemin du tremblay unit #3 boucherville quebec j4b 7k4 canada 877-980-2400 www.simaudio.com november 2002 revision

company philosophy keeping an open mind and producing the best products at every price point is simaudio s basic design philosophy we strongly believe in the long term use of products and are against forced or premature obsolescence consequently we will never manufacture a product under a certain level of performance where the lower limit is determined by 1 the costs associated with high quality electronic components and 2 the r&d investment to achieve a long lasting durable design as well our manufacturing facility addresses numerous environmental concerns that include recyclability careful attention to packaging and the roc cleaning process for aluminum and steel purchasing a component represents the beginning of what we see as a long term relationship between simaudio and the customer design philosophy simaudio has been designing integrated amplifiers since the early eighties when we recently launched our state-of-the-art moon product line it was mandatory to include an integrated

designing the moon i-5 gain stage required a substantial r&d effort after a great deal of time and effort we selected an electronic component manufactured by crystal this device functions in a slightly different way than an m-dac but it basically reproduces our rbg circuitry in a single chip configuration rbg technology richard benoit gain named after the engineer who developed this circuit is found in our moon p-5 preamplifier by applying more or less impedance using a network of relays in a shunt to ground mode against the input signal we can increase or decrease the gain without degrading the quality of the audio signal regardless of the selected level of gain since physical space was a major consideration inside the moon i-5 we elected to go this crystal device and assigned it the name rbg-cy to make a distinction between it and our other gain control circuits this device helps to achieve a major goal of rbg technology minimize the signal path length and consequently preserve

general description and specifications type solid state configuration dual mono partial transformers 0.5kva at 6 regulation power supply capacitance 40,000µf class of operation preamplifier class `a amplifier class `a/ab remote all-aluminum simple function single-ended inputs rca 5 pairs input devices types preamp j-fet input sensitivity 300mv 3.0v rms input impedance 14,000 ohms tape output 1 pair preamplifier output 1 pair for another amplifier or subwoofer output device types amplifier bipolar 1 pair per channel output binding posts wbt shielded output power 8 ohms 70 watts per channel output power 4 ohms 110 watts per channel output impedance 0.04 ohms damping factor 200 gain control rbg cs version gain 30db dynamic headroom 3db signal-to-noise ratio 97db full power maximum output voltage 23.5 volts slew rate 20v/µs maximum current 16 amperes peak 9 amperes continuous frequency rsponse 10hz ­ 75khz 0 3db crosstalk 1khz -50 db

transformers experience a multitude of losses each of which will contribute to degrading the performance of an audio component unfortunately most high-end audio manufacturers have no background in transformer design and therefore will simply order them from a transformer manufacturer by simply specifying the va the different voltages and perhaps the regulation factor the end result is what you find in a majority of the audio equipment available a low efficiency a poor regulation factor high heat losses high eddy current losses vibrations and a great deal of magnetic field losses all of these negative elements find their way into the audio signal and reduce the sheer purity of the music luckily for simaudio john poulin president and director of research development has an extensive background in transformers from his experiences in the telecommunications industry where leading edge technologies are often developed and/or used the grade of steel used in the transformer core will have a

input stage devices are very high quality and precisely matched j-fets they are employed in the circuit based on their sonic merits and also because they are very accurate we need this kind of precision in our open loop input section with no feedback where we can only rely on parts quality and stability these devices produce a very natural harmonic structure for signal amplification output stage devices are a new motorola bipolar design we could have used mosfets but since we already use bipolar devices in all our amplifiers we decided it best to maintain our successful recipe these devices are matched on the basis of their hfe characteristics to tolerances of 0.5 or better for those who believe that either a mosfet is better or a bipolar is better we have one point to make any technology can either be well implemented or poorly implemented they all have their strengths and weaknesses and they re all capable of producing excellent results the moon i-5 integrated amplifier has two

other significant design factors include · the use of 2 silver alloy multicore solder throughout the circuit for better accuracy and precision of the audio signal · short signal paths for better dielectric coloration factor · tight component match in all critical positions for better transparency · symmetrical circuit design for better focus and soundstage · low impedance capacitor networks for better transient response · teflon dielectric on specific wires for better dielectric coloration factor quality control by this point it must be quite obvious that simaudio pays careful attention to quality control throughout the each stage of the entire manufacturing process from the selection and inspection of individual electronic components through to final testing and packaging simaudio pays extra special attention to all soldering during the assembly we encourage the experts to take a good look at our soldering joints simaudio achieves this high quality through the presence of two