AUDIO PALETTE OWNER' S MANUAL
Standard/MIV
Serial Number
AUDIO PALETTE
Table of Contents |
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Introduction................................................................. |
1 |
Product Concept and Description .................................. |
2 |
Unpacking.................................................................. |
3 |
Installation.................................................................. |
3 |
Connection.................................................................. |
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3 |
Connection Diagrams............................................... |
4-5 |
Operation.................................................................... |
6 |
Input Impedance.......................................................... |
6 |
Controls...................................................................... |
6 |
Frequency Response Adjustments................................. |
7 |
Using Calibrated Controls............................................ |
7 |
Warranty..................................................................... |
8 |
Service........................................................................ |
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8 |
Block Wiring Diagram............................................ |
9-10 |
Input Impedance Settings............................................ |
11 |
Specifications............................................................ |
12 |
AUDIO PALETTE
Introduction
Congratulations on choosing the Audio Palette. Your unit has been individually hand-made from the finest parts and materials. The Audio Palette utilizes proprietary Cello circuitry that represents the true state- of-the-art in audio electronics. It is designed to perform to specifications for decades of musical enjoyment.
We want your Audio Palette to provide you with complete satisfaction. This unique instrument requires proper installation in order to perform to its full potential.
This manual is for both standard version (STD) and the multiple input
version (MIV) of the Audio Palette. Information applies to both versions unless specific information is provided for each.
Please read this manual carefully. Because of its flexibility, the Audio Palette can be used to do as much or as little as you want it to do. The instructions in this manual provide basic steps to enable you to enjoy music in a new, participatory way.
If you have any questions, contact your authorized Cello supplier or call the factory. It is our wish to assist you in every way, now and in the future.
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AUDIO PALETTE
Product Concept and Description
The Audio Palette is a distillation of 45 years of research by Richard S. Burwen, expressed in Class A discrete circuitry designed by Thomas P. Colangelo. The Audio Palette and power supply contain over 6,000 parts comprising 48 discrete Class A push-pull amplifiers, nine 59-position Cello rotary controls, and many premium, custom-made components.
The Audio Palette advances musical realism more than any other single component and it is the heart of the Cello Music System.
In the Audio Palette, Cello has developed a tone control system of
unparalleled quality. Tonal balance can be corrected with no sonic deterioration. The Audio Palette allows you to dial in, from the listening position, the most subtle or radical adjustments which restore the vitality and life to recordings of music.
Major record labels use the Audio Palette to restore older recordings and to make the finest compact discs.
However, you don't have to be an engineer to use the Audio Palette. The most non-technical listener can obtain excellent results with a small amount of practice.
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AUDIO PALETTE
Instructions
UNPACKING
Inspect the containers for signs of damage in transit. Report any evidence of abuse immediately. Open containers carefully and remove contents from the packing. Take care not to scratch the surfaces of the unit. Save all boxes and foam pieces for reuse in the event that the unit must be shipped in the future. If the boxes should become lost, replacement boxes are available from the factory.
Packing Contents:
•One Audio Palette
•One DC Cable
•One Ground Jumper
•One Torx Key
Accessories to be Ordered and Shipped Separately:
•Cello Strings
•Master Supply-with AC Cable and Ground Jumper
INSTALLATION
Ideally, the Audio Palette should be located at the "listening position" (location in the room where you will usually sit to listen to music).
This puts all the important controls at your fingertips. In most cases, the Audio Palette will be connected between the Audio Suite or other preamplifier and the power amplifiers in use. It may also go in the tape loop.
The Audio Palette may be installed in a table, cart, or other housing provided that the rear of the unit is well ventilated. If the front rack holes are to be used as the sole support (without the feet), then reinforcing L-brackets (part number 53-1100-00-09-00) should be used to strengthen the mounting. Contact your authorized Cello supplier for further information.
With the Audio Palette placed at the listening position, the power supply may be
located near your Audio Suite or other components. In most systems, the audio inputs and outputs and the DC cable will be run from the Audio Palette through a single conduit back to the Audio Suite/preamplifier location.
CONNECTION
The Audio Palette uses three-pin Fischer connectors for the highest quality balanced input and output connections. At the input, the standard version has 1 Fischer and 3 RCA connections. The MIV has 2 Fischers and 6 RCA connections. At the output, in addition to the Fischer connectors, there are 3 pair of RCA connectors. One pair of RCA's are for use as a single ended Main output. The other two pairs of RCA's are fixed level record outputs.
It is recommended that you use Cello Strings cables. Cello Strings are stocked in lengths of 1, 2, 5, 8, and 10 meters, and come assembled with a variety of connectors: Fischer, XLR, and RCA. Custom length Cello Strings are available through your authorized Cello supplier.
Adaptors are available for connecting your Audio Palette to RCA and Camac type systems. Please contact your authorized Cello supplier for information and prices.
The Audio Palette may be used with the audio ground separated from the earth ground or connected to it. A jumper on either rear supply barr ier strip between WHITE and BLUE connects these points. Whichever yields the lowest hum and noise should be selected. Make these connections with power off. Our test instruments have this optional ground float feature so we decided to introduce it in our products as well, for lowest noise characteristics.
ELECTRICALCONNECTIONS
1.Make certain that all on /off switches are "off".
2.Verify that AC Mains voltage setting is corr ect (see label on rear of Master Supply).
3.Install the DC cable by connecting the colored wires to the corresponding terminals on the back of the unit.
4.Install each terminal and tighten each screw until there is zero play, then apply an additional 1/8th turn so that it is snug. Be sure to keep the spade terminal from rotating while turning the screw. Do not over-tighten or you will break the terminal strip.
5.Install the terminal strip covers. Again, don't over-tighten.
6.Connect the preamplifier or the other driving source to the Audio Palette input(s).
7.Connect the Audio Palette Main output to the amplifier input.
8.Connect the Audio Palette record outputs to the tape deck inputs.
9.Install the AC cable to the IEC mains connector on the rear of the Master Supply.
10.Connect the AC cable to the AC mains.
The Audio Palette may be driven by a preamplifier or directly from any line level source such as a CD player, tape recorder, or tuner.
See connection identification diagrams, figs. Al, A2, A3 and A4.
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