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Prisma 350

Stereo Power Amplifier

Owners Manual

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Содержание Prisma 350

Страница 1: ...Prisma 350 Stereo Power Amplifier Owners Manual...

Страница 2: ...change products or specifications detailed herein at any time without notice and does not make any commitment to updatethe information contained herein No licenses to patents or other intellectual pr...

Страница 3: ...nic realism and electronic reliability with a functional yet elegant appearance that reflects the care and craftsmanship applied during all stages of construction Features at a Glance Balanced and Unb...

Страница 4: ...posing the 350 to extremely high or low temperatures The 350 should be connected to a mains power supply only of thetype described in the operating instructions or as marked on the rear of the unit DO...

Страница 5: ...r DO NOT operate this product in an explosive atmosphere Caution The 350 is an extremely high powered convection cooled amplifier The finned outer heat sinks may become very hot when delivering high v...

Страница 6: ...ons 11 4 4 4 4 Rear Panel Functions 12 5 5 5 5 Special Design Philosophies 16 6 6 6 6 Special Design Features 18 7 7 7 7 Maximising System Potential 20 8 8 8 8 The Power MOSFET 22 9 9 9 9 Care and Mai...

Страница 7: ...lifier could be tipped upside down and the bottompackaging removed If opened in this manner please ensure that you turn the contents over again Note Be very careful to secure the unit if you are plann...

Страница 8: ...h a cloth or similar Please do not mount the 350 directly onto carpeted surfaces As a rule of thumb allow 80 100mm 3 4 inches around all sides of the product and mount the 350 on a flat surface ensuri...

Страница 9: ...f the 350 and set the input configuration toggle switch at the rear to the correct position Note Try to keep all interconnect cables as far from loudspeaker cables as possible and well away from all A...

Страница 10: ...volume Slowly increase the preamplifier volume control to achieve a comfortable listening level CONGRATULATIONS Now that you have achieved your first objective sit back relax and please read the rest...

Страница 11: ...position or power not being supplied to the mains power cord e g unplugged switched OFF at the wall socket tripped circuit breaker etc Standby occurs when the unit is connected to the mains supply wi...

Страница 12: ...important that the 350 be operated from the correct AC mains voltage This unit is factory set for the voltage applicable to the original country of destination The 350 will operate satisfactorily with...

Страница 13: ...nternal signal earth to mains earth and is the normal position Setting to UP disconnects the signal earth from the mains earth Note Activating this switch has no effect on chassis earth maintaining th...

Страница 14: ...ed momentarily after the power switch is actuated Set the switch left O to turn the unit off at which time the outputs will be disconnected Speaker Output Terminals The 350 is equipped with two sets o...

Страница 15: ...respond to the 350 balanced inputs In the event that they are not compatible the interconnecting cable will need to be altered to suit For more information regarding balanced interconnects please refe...

Страница 16: ...design perspective only The concept of less equating to more has been at the heart of all Perreaux audio designs for more than a quarter of a century Minimalist Electronics We wish to maximise the qu...

Страница 17: ...products on the planet We let form and function blend together in perfect harmony This surely is the essence of true minimalist utilisation Minimalism in a Wider Context John Pawson writes Clearly si...

Страница 18: ...effect Hybrid Class A AB The bi polar transistors used in the 350 are run in Class A mode This avoids the crossover notch distortion and the resulting odd order harmonics present to some degree in al...

Страница 19: ...igning the product to ensure maximum separation between internal signal and power earths only meeting at a central starred point Earth Isolation Switch The toggle switch on the rear of the 350 allows...

Страница 20: ...e input sensitivity so that when the same input signal is provided to each of them the output level will be exactly the same This can often be done with one power amplifier connected to the tweeters a...

Страница 21: ...e with your particular priorities The best advice we can give concerning the choice of loudspeakers is establish clearly in your mind your requirements listen to many makes and models and if at all po...

Страница 22: ...the device is effected by the application of a smaller but nevertheless significant amount of power to the controlling element Whereas in the power MOSFET the control of the power through the device i...

Страница 23: ...s in a power transistor This is related to thermal runaway In order to understand this one must imagine that the chip silicon inside the power transistor is in fact many smaller transistors connected...

Страница 24: ...slow This means the distortion products in the signal of say a fast transient will not travel through the negative feedback system into the output stage fast enough to cancel at exactly 180 degrees o...

Страница 25: ...o the surface Stubborn dirt may be removed by the application of a small quantity of methylated spirits applied directly to the cleaning cloth only and reworking the effected area Front Panel The 350...

Страница 26: ...it will be repaired or replaced at our option without charge for either parts or labour The warranty does not apply to any unit that has been misused abused or altered Any unit that is not performing...

Страница 27: ...ail Perreaux Industries Ltd PO Box 305 Mosgiel Dunedin 9053 New Zealand E mail info perreaux com Alternatively complete the online Warranty Registration Form on our website www perreaux com 5 Year Ext...

Страница 28: ...must be employed to negate these effects on low level signal equipment Another good practice to adopt is to keep all signal leads away from power leads The practice of neatly tying excess leads togeth...

Страница 29: ...en experiencing a problem such as one channel not working or a noise in one channel it is good practice to adopt a method of isolating the problem to a specific item or area This practice will assist...

Страница 30: ...swapping them at the amplifier output If the fault now appears in loudspeaker B then that loudspeaker lead is at fault go no further If the fault appears in loudspeaker A then loudspeaker leads are O...

Страница 31: ...t at a minimum volume setting Only increase the volume after the connections have been changed Should the fault prove to be in the amplifier it will be necessary to determine where the fault actually...

Страница 32: ...estore speaker cablesto original connections Fault in loudspeaker B Swap amplifier source input channels Loudspeaker A at fault YES NO Loudspeaker cable at fault Fault in loudspeaker A Swap source out...

Страница 33: ...4 continuous per channel both channels driven from 20Hz 20kHz at 0 035 THD Frequency Response 5Hz 40kHz 0 25dB Total Harmonic Distortion THD N Typically 0 004 1kHz into 8 20Hz to 20kHz 0 020 into 8 Vo...

Страница 34: ...25dB This is the standard specification with which everyone is familiar Actually frequency response is a misnomer technically it should be called amplitude response versus frequency for it describes h...

Страница 35: ...high volts peak to peak the 350 can easily meet any challenge music can present to it whether instantaneous or continuous To be specific it can deliver high power into low impedance loads and provide...

Страница 36: ...36 14 14 14 14 Physical Dimensions...

Страница 37: ...ails For more information please contact your Perreaux dealer or contact Perreaux Industries Ltd PO Box 305 Mosgiel Dunedin 9053 New Zealand Ph 64 3 489 2975 Fax 64 3 489 2976 E mail info perreaux com...

Страница 38: ...38 Installation Notes...

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