Plinius SA-103 Instruction Manual
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Plinius SA-103 Instruction Manual

Power amplifier
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SA-103
Power Amplifier
Instruction Manual
The heart of music
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Summary of Contents for Plinius SA-103

  • Page 1 SA-103 Power Amplifier Instruction Manual The heart of music www.pliniusaudio.com...

  • Page 3: Table Of Contents

    All operational, technical and descriptive material in this publication is subject to change at any time without notice. For further product information or queries, please contact your PLINIUS dealer. PLINIUS products are designed and manufactured by Plinius Audio Limited, New Zealand.

  • Page 4: Introduction

    We have designed and manufactured this amplifier to reproduce faithfully and accurately, your favourite music. With a little care and a full understanding of the operating recommendations in this manual, your PLINIUS SA-103 Power Amplifier will provide years of high-quality, trouble-free performance.

  • Page 5: Design Philosophy

    DESIGN PHILOSOPHY From a distance you can see that the design of the Plinius products is more than an applied styling exercise to the front panel. We have started from the ground up to produce a casing for our electronics that is unrivalled in its physical strength and visual simplicity.

  • Page 6: Unpacking

    The PLINIUS SA-103 design incorporates a very high level of mechanical decoupling of the input and output. It can however still be influenced by acoustical feedback in the operating environment.

  • Page 7: Precautions

    PLEASE TAKE SPECIAL NOTE OF THE FOLLOWING PRECAUTIONS BEFORE OPERATING YOUR NEW AMPLIFIER. The PLINIUS SA-103 Power Amplifier can be operated in mono mode delivering up to 460 watts into 8 ohms. This amplifier is also capable of a very large peak current delivery.

  • Page 8: Amplifier Features - Front Panel

    Class AB. This is a bias configuration used by the majority of high fidelity amplifiers. In Class AB your PLINIUS SA-103 produces very high quality sound, suitable for all occasions where critical listening is not a priority. A dual benefit exists...
  • Page 9 This feature allows you to leave the PLINIUS SA-103 switched ON at all times, rendering the amplifier ready for use and requiring only a few minutes of warm-up in Class A before the very best of the amplifier’s sonic qualities may be experienced.

  • Page 10: Amplifier Features - Rear Panel

    SA-103 rear panel layout INPUT TerMINALS Input terminals for your PLINIUS SA-103 Power Amplifier are easily accessible and fitted near the top centre area of the rear panel. RCA INPUTS: These standard RCA terminals are for use with unbalanced signals from most signal sources such as audio preamplifiers.
  • Page 11 AMPLIFIer CoNFIGUrATIoN SeLeCTor (ACS) The Amplifier Configuration Selector (ACS) is a unique switching method that exploits all of the operational features of your PLINIUS SA-103 Power Amplifier. By using this switch it is possible to operate your amplifier with either balanced or unbalanced signals and achieve a stereo or mono output.
  • Page 12 UNBALANCED leads such as single ended, RCA or coaxial are common and are used in the majority of audio signal systems. The terminal plug and socket are most commonly called RCA and can be found on your PLINIUS SA-103 for use as the standard input terminals for both left and right inputs.

  • Page 13: Installation And Operation

    PLEASE READ AND UNDERSTAND THE PRECAUTIONS IN THE INSTRUCTION MANUAL FOR THE POSITION AND OPERATION OF YOUR PLINIUS AMPLIFIER. CoNNeCTIoN Connections to your PLINIUS SA-103 should be made in the same order as they are listed in this section. DO NOT attempt to connect your PLINIUS SA-103 until you have read and fully understood these instructions.
  • Page 14 If using single-ended RCA inputs, connect your preamplifier to the RCA inputs on the back of the PLINIUS SA-103. Make sure you connect the red coded cable to the red RIGHT RCA input, and the black (or white) cable to the black LEFT RCA input. Also make sure the RCA connectors are a snug fit and are inserted all the way in.
  • Page 15 Bi-wiring uses two pairs of loudspeaker cables for each channel loudspeaker. You will notice that the rear panel of your PLINIUS SA-103 has two pairs of output terminals for this purpose. Be sure to follow correct practises for stereo and mono configurations when using bi-wiring.
  • Page 16 2. RCA BRIDGED MONO 3. XLR STEREO 4. XLR BALANCED MONO The following section explains how to use the SA-103 in RCA Bridged Mono and XLR Balanced Mono configurations. rCA BrIDGeD MoNo This option configures your amplifier to drive one loudspeaker from one unbalanced signal fed to the red RIGHT RCA input.
  • Page 17 Check the wall outlet is switched OFF, then connect the local mains plug end of the lead to the wall outlet. Check the SA-103 is switched OFF, and connect the IEC end of the cable to the IEC socket at the back of the SA-103. With the cord fully connected, switch the wall outlet ON.

  • Page 18: Sa-103 Features

    PerIoD You will find that the PLINIUS SA-103 will become noticeably ‘purer’ in sound after being on for a period of time. We recommend waiting at least 24 hours before expecting the best quality of sound reproduction from your amplifier. We suggest leaving the unit turned on so that it will always be at it’s sonic best.
  • Page 19 CoNTroL The PLINIUS SA-103 is also fitted with a microprocessor which monitors and performs the Bias and Mute functions. It is programmed to switch the amplifier back into Class AB if no signal has been present at the input for a predetermined time. This time can be adjusted to Off, 15, 30 or 60 minutes.

  • Page 20: Loudspeaker Selection

    LOUDSPEAKER SELECTION Your PLINIUS SA-103 Power Amplifier is designed for use with high fidelity loudspeakers. It should not be used to operate any other type of appliance or equipment. Choice of loudspeakers is one of personal taste, providing the chosen loudspeakers are suitable for use with your amplifier.

  • Page 21: Specifications

    SPECIFICATIONS 125 Watts RMS per channel into 8 ohms. 220 Watts RMS per channel into 4 ohms. Both channels driven from 20Hz to 20kHz at 0.05% total harmonic distortion. MONO OUTPUT 400 Watts RMS 20Hz to 20kHz into 8 ohms FREQUENCY RESPONSE 20Hz to 20kHz +/-0.2dB.

  • Page 22: Index

    INDEX ACS (Amplifier Configuration Selector) 9, 12, 14 Balanced Signal Bias Class A Bias Class AB Bias Switch Bi-wiring Ecologic Control Error Detection Front Panel Layout Fuse Protection 16, 17 Ground Lift Switch IEC Power Connector 11, 15 Input Terminals 8, 10, 12 Loudspeaker Impedance Loudspeaker Power...

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