--------------------------------------------------------------------------- CADENZA PRE AMPLIFIER OWNER’S MANUAL ------------------------------------------------------------------------------- © Viola Audio Laboratories 2005 The information contained in the manual is subject to change without notice. The most current version of this manual will be posted on our web site at www.Violalabs.com.
TABLE OF CONTENTS • Safety Instructions 3 • Introduction 4 • Unpacking 4 • Voltage Setting 4 • Location 5 • XLR Connector Pin Assignment 5 • Surround Sound Processor Loop 6 • Cadenza Front Panel Description 7 • Cadenza Rear Panel Description 8 • Cadenza Power Supply Rear Panel 9 • Connecting the Cadenza to your System 9 o Connecting the Inputs 10 o Connecting the Outputs 10 • Connecting the Power Supply 10 • AC Power Cable Connection 10 • Switching on for the Fi
IMPORTANT SAFETY INSTRUCTIONS Please read all of the following instructions carefully before operating your Cadenza. 1. This product contains no user serviceable parts. Never attempt to repair the unit yourself. Refer all servicing to a VIOLA approved technician. 2. This product must be connected to the mains supply with a threeconductor AC mains power cord that includes a ground connection. To prevent shock hazard, all three connections must ALWAYS be used. NEVER defeat the ground connection. 3.
INTRODUCTION Thank you for choosing the VIOLA Cadenza Preamplifier. Great care has gone into the design and manufacture of the Cadenza and if properly used, it will give a lifetime of musical enjoyment. We strongly recommend that you read these instructions before you attempt to use the unit, so that you can be sure it is set up to give optimum performance. UNPACKING Please keep all of the packing materials in case you ever need to ship the unit.
If the setting on your unit is not correct, contact your VIOLA dealer. Only a VIOLA approved technician should change the voltage setting. Do not attempt to do this yourself. Should you set the unit to the wrong voltage, you risk personal injury and you may also cause serious damage to the unit which will void the warranty. LOCATION The pre-amplifier should be placed on a rigid stand or shelf.
SURROUND SOUND PROCESSOR LOOP Caution! • BEFORE attempting to change the Cadenza’s SSP settings, switch the unit off and disconnect the power supply from the mains. The front left and right channels of a surround sound signal may be routed through the Cadenza by enabling the SSP function. This simply involves disabling the volume control so that the surround sound processor controls the signal level.
CADENZA FRONT PANEL DESCRIPTION INPUT 3 4 LEFT dB GAIN 10 5 1 12 9 6 2 11 13 8 7 14 7 VIOLA CADENZA PREAMPLIFIER A 9 13 8 -20 -10 -30 14 15 6 16 B OUTPUT LEVEL 10 11 12 7 15 6 RIGHT dB GAIN C 16 0 -40 +10 E D Figure 2. Cadenza front panel A. Input Selector Switch. The Cadenza has 7 inputs. described in the table below: Input 1 2 to 5 6 7 Description Reserved for future use Unbalanced Balanced Balanced These are Connector RCA Fischer XLR B.
CADENZA REAR PANEL VIOLA AUDIO LABORATORIES 315 PECK STREET NEW HAVEN, CT 06513 WWW.VIOLALABS.COM TAPE OUTPUTS INPUT 7 INPUT 6 INPUT 5INPUT 4INPUT 3 INPUT 2 L DC POWER F R G H I J K L M N O P Q R Figure 3. Cadenza rear panel The Cadenza’s input and output connectors are arranged in 2 rows on the rear panel. The lower row is for the right channel and the upper row is for the left channel. F. DC Power Input Connector. G. RCA Unbalanced Tape Output.
POWER SUPPLY REAR PANEL T U WARNING HAZARDOUS VOLTAGES INSIDE DISCONNECT AC MAINS BEFORE ATTEMPTING ANY WIRING OR REMOVAL OF ANY CHASSIS MEMBERS. NO USER SERVICEABLE PARTS INSIDE. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL. DC POWER S 1 0 SERIAL NUMBER VIOLA AUDIO LABORATORIES 315 PECK ST NEW HAVEN CT 06513 WWW.VIOLALABS.COM Figure 4. Cadenza power supply rear panel S. DC Power Output Connector. T. Mains On/Off Switch. U. AC Cord Input Receptacle.
CONNECTING THE INPUTS Unbalanced Signal Sources: Use connectors 2 to 5 on the unit’s rear panel. Balanced Signal Sources: If you wish to use cables fitted with Fischer connectors, use input 6 on the unit’s rear panel. If you wish to use cables fitted with XLR connectors, use input 7 on the unit’s rear panel. CONNECTING THE OUTPUTS Balanced Outputs: If you wish to connect the Cadenza to your power amplifier using cables fitted with XLR connectors, use either set of XLR outputs shown as J & K on figure 3.
SWITCHING ON FOR THE FIRST TIME Check that all the signal cables in the system are correctly connected. Select the appropriate input on the Cadenza and set the output level control to minimum. Set both gain controls to 6dB. Switch on your signal source, which we will assume is a CD player. Allow the system to stabilize for 2 minutes, and then put a CD into the player and press play. If the wall outlet you are using for the Cadenza is switchable, switch it on now.
CARE AND CLEANING Caution! • ALWAYS switch the preamplifie r off and disconnect it from the mains supply before attempting to clean it. • NEVER apply cleaning products directly to the preamplifier as they may enter the unit and cause damage. • NEVER use any of the following cleaning products as they may damage the finish: • Wax polish • Spirit or alcohol based cleaners • Corrosive or abrasive cleaners In most cases wiping the units with a slightly damp soft cloth will give satisfactory results.
Operating Voltage 100V, 110V or 120V 220V or 240V Fuse Rating T5A T3A Fuse Size 1 1/4 inch 5mm x 20mm • After replacing the fuse, switch the amplifier on and check whether it operates normally. If the fuse blows again, switch the unit off immediately, disconnect it from the mains supply and get in touch with your VIOLA dealer, national distributor or VIOLA directly for technical support. Contact details for VIOLA are given in the GETTING IN TOUCH section of this manual.
• Check that the Cadenza output level control and if applicable, the signal source volume control, are set at a level that is loud enough to hear. 3. The stereo image is off center. • Check that the gain controls are set to the same position 4. Output is in mono. • If you are using the balanced outputs, check that you have connected to one output in the upper row and one output in the lower row on the Cadenza rear panel.
For units returned to the factory under warranty during the first year, VIOLA will pay for the freight charges both ways. A VIOLA approved shipping company must be used and the units will be returned to the customer using the same carrier, or an equivalent service. For units returned to the factory under warranty during years 2 to 5, the customer is responsible for paying the shipping charges back to the factory. A VIOLA approved shipping company must be used.
SPECIFICATIONS Inputs: 1 4 1 1 x x x x Option Card RCA unbalanced Fischer balanced XLR balanced Outputs: 1 1 2 1 x x x x RCA Fischer XLR RCA (Tape) Input Impedance: 1 M Ohm Frequency Response: 20Hz to 20kHz ± 0.1dB IMD: Less than 0.005% @ 1V input THD: Less than 0.01% @ 20kHz 1v input Noise: -95dB Power Consumption: Approximately 25W Weight: Preamplifier: Power Supply: 20.0 lbs. (9.1kg) 16.0 lbs. (7.3kg) Dimensions: Preamplifier: 17.6” W x 3.6” H x 16” D 44.7cm W x 9.1cm H x 40.
