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PASSLAB aleph 5 free download

Audio equipment,digital audio, home audio, professional audio systems service manuals and repair information

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File name:aleph 5.pdf
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Descr: . Rare and Ancient Equipment PASSLAB Audio Aleph 5 aleph 5.pdf
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File name aleph 5.pdf

Pass Laboratories Aleph 5 Owner's Manual Serial # Dear Customer, The Aleph 5 is the fourth of the newest generation of amplifiers from Pass Labs. This design results from my commitment to create the best sounding product, a simple circuit having the most natural characteristic. The Aleph 5 integrates power Mosfet devices and pure single ended Class A operation in a simple two-gain-stage topology with the sole purpose of recreating subjectively natural sound. The Aleph 5 is unique in a number of ways: Unlike the early Aleph amplifiers, it operates in pure single-ended mode over its entire operating region, and does not incorporate a "pull" stage for additional current beyond its bias point. When the single-ended output Mosfets (four sets of three in parallel) reach cutoff, the amplifier clips. Most amplifiers on the market have between five and seven gain stages in series between the input and the output. The Aleph 5 has but two, and enjoys a very direct path from input to output, further enhancing the purity of the circuit and the resulting sound. Early Aleph amplifiers have three gain stages. The output stage of the Aleph 5 is a unique blend of traditional design and innovation addressing the unique requirements of loudspeakers. Previous methods of loading the output stage have used networks consisting of resistors, coils, transformers, and active current sources, all of which offer an optimal load line based on a resistive load. The Aleph 5 has a current source topology which optimizes performance for a wide range of impedance and reactance in the load, improving all aspects of performance into real loudspeakers. Pass Labs has a US patent pending on this output stage topology. The Aleph 5 is unique in that there are no adjustments of any kind in the circuitry. There are no potentiometers to adjust. The operating parameters of bias currents and DC offset and so on are defined by physical constants, and will not go out of adjustment. Most important, the Aleph 5 brings a new dimension to the recreation of subjective sonic reality. The amplifier delivers detail and subjective space rarely found in semiconductor circuits, coupled with the authority and clarity rarely found in tube amplifiers. Thank you for purchasing this amplifier. I have personally performed the tests on it, and guarantee that it meets our production standards. Accompanying are the distortion curves for this particular amplifier. This amplifier is different. I have considerable confidence that you will like it, but as the performance is subjective, you be the judge. _________________________________ Nelson Pass Setup The amplifier has three sets of connections and one switch: The first connection and switch is the AC line power system. The amplifier's voltage and current rating are indicated on the bottom. It will be either 240 volts, 120 volts, or 100 volts, all with a 3AG slow blow type

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