Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Table of Contents Introduction......................... 1 The Spirito Reference Preamplifier ..................2 Important Safety Instructions....................3 Additional Points of Concern and Attention............4 Unpacking Your Preamplifier..................... 5 System Set-up and Installation.................... 6 Breaking in Your New Preamplifier ..............
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Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Table of Figures Figure 1: Lightening Flash With Arrowhead - "Dangerous Voltage" ........ 3 Figure 2: Explanation Point - Important Operating and Maintenance Instructions.... 3 Figure 3: Spirito Front View....................9 Figure 4: Spirito Rear View....................
This component is designed to have the highest degree of compatibility with most other high-end components, regardless of manufacturer. However, it is one part of a Viola system that was designed to work together for maximum compatibility. The reference system consists of the Spirito Reference...
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual The Spirito Reference Preamplifier Spirito is a modular designed preamplifier that utilizes open architecture to provide you with maximum flexibility for customization, upgrading and expansion. The Spirito is a mainframe preamplifier with a separate power supply chassis. The Spirito mainframe has ten open card slots that load from the rear and permit you to configure the preamp as you wish.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Important Safety Instructions WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture. CAUTION: To reduce the risks of electrical shock do not remove the cover from this product.
Never bypass any fuse. Never replace any fuse with a value or type other than those specified. Never attempt to repair this product. If a problem occurs, contact your Viola retailer. Never expose this product to extremely high or low temperatures.
Your new Viola Spirito preamplifier is very heavy. The shipping weight of the Spirito is approximately 121 pounds (55 kg) .We highly recommend the use of two people to unpack this unit safely.
Important! For your protection, please review "Important Safety Instructions", Section 1 above, before installing your preamplifier. Your Viola Spirito preamplifier is specifically designed to accommodate a wide range of installation options. This preamplifier may be placed near the amplifiers or at an established distance. They may be located on shelves, if indeed the shelves are sturdy enough to support the weight of the preamplifier.
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Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Mechanical drawings are included in this manual to facilitate special installations where necessary. Please see "Dimensions" at the end of this manual.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Special Design Features Congratulations on your purchase of a SPIRITO Reference Preamplifier by Viola Audio Labs. While your new preamplifier is straightforward in everyday use, it includes several design features that are responsible for its outstanding performance.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Rejection of common mode noise and distortion is achieved in the final, current gain stage. 1.5 Use of Adaptors Your Spirito preamplifier uses state of the art balanced circuit topology. When using an adaptor to go from the Spirito balanced output to an unbalanced input, pin 1 and pin 3 must be connected together.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.6.1 Power Indicator Light • The ring around the power button is an LED that shows the operational status of your preamplifier: • Completely off indicates that the amplifier is not connected to the AC Mains.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.7 Rear Panel Processor Card Bay 10 Card Bay Card Bay 1 Figure 4: Spirito Rear View 1.7.1 Processor Card Bay: • The first card slot holds the Spirito Processor Card. The only card that will fit in this slot is the processor card.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.8 Spirito Reference Modules 1.8.1 Spirito Processor Card DC Power Input Remote ON / OFF RS-232 Port Reset Figure 5: Spirito Processor Card Connectors • Spirito DC power input connector. The processor card routes power to all modules via the backplane.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.8.2 V20 Reference Input Card Balanced Input 1 Board Icon Balanced Input 2 Unbalanced Input 3 Figure 6: Spirito Reference Input Card Connectors • Spirito will accept a signal from a source with balanced outputs via a high quality XLR or Fischer connector.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual • These pin assignments are consistent with the standards adopted by the Audio Engineering Society. Refer to the operating manual of your source equipment to verify- that the pin assignments of its output connectors correspond to the Spirito input card.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual Main Screen Controls Main Setup Update Remote Mute Volume Balance -20.0 dB 0.0 dB Module Icon Locations Please press the Buttons for Actions Figure 8: Spirito Main Screen Icons 1.9 Main Amp On / Main Amp Off •...
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.11 Board Icons • Board icons occupy the lower half of the main screen. When the Spirito is turned on the processor will poll each of the ten card slots. When a module is found an icon for the board type is displayed on the main screen, refer to figure 8.
Viola Laboratories Spirito Reference Series Preamplifier Owner's manual 1.13 System Update • Pressing the Update button on the main screen will bring you to the system update screen. • Pressing the Upgrade Firmware button will initiate a firmware upgrade thru the RS-232 port on the processor card. New firmware downloads will be available on our website, www.violalabs.com.
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Viola Laboratories Spirito Reference Series Preamplifier Owner's manual • Tape On/Off box enables or disables signal at the tape outputs. The signal at the tape output is a fixed output, the volume and balance control have no effect on this signal.
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