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Avalon Mixing Monitor Manual

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Avalon Professional Products
Serial Numbers
____________________
This product is certified to meet the requirements of the European Union (EU)
Electromagnetic Compatibility (EMC) Directive (89/336/EEC). Because the permanent
magnets attached to the loudspeaker drivers produce magnetic fields, it is
recommended that the product not be positioned in very close proximity to computer
monitors or television sets.

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Summary of Contents for Avalon Mixing Monitor

  • Page 1 Avalon Professional Products Serial Numbers ____________________ This product is certified to meet the requirements of the European Union (EU) Electromagnetic Compatibility (EMC) Directive (89/336/EEC). Because the permanent magnets attached to the loudspeaker drivers produce magnetic fields, it is recommended that the product not be positioned in very close proximity to computer...

  • Page 2: Table Of Contents

    6 Care of Your Avalon Loudspeakers..................12 Cabinet (Black Textured Finish) ..............12 Drivers .......................12 7 Technical Details......................13 Background....................13 Basic Architecture ..................14 How to use the Mixing Monitor ..............17 8 Room Position ........................18 Introduction ....................18 An Optical Analogy..................19 Basic Room Acoustics................19 8.1 Standing Waves .....................20 8.2 Flutter Echo ....................21...

  • Page 3: Introduction

    1 Introduction The Avalon Professional Products Mixing Monitor was designed by Neil Patel in cooperation with several of the most accomplished recording engineers currently working in the recording industry. Over the years, some of the world’s finest recordings have been created using Avalon Acoustics consumer products.

  • Page 4: Unpacking Instructions

    The accessory bag contains two pairs of alternate loudspeaker ports, assembly screw and tools, and eight mounting spikes. Avalon Professional Products loudspeakers are carefully matched in pairs for sonic performance and aesthetics. All matched pairs are sequentially serial numbered, and the lower of the two serial numbers is even.

  • Page 5: Opening The Container

    Carefully cut the packing tape on the top side, and open the flaps to the container (See Figure 2.1). Next, lift the top cardboard panel off of the loudspeaker. The Mixing Monitor can then be picked up straight out of the box.

  • Page 6: Wiring Instructions

    3 Wiring Instructions Introduction The Mixing Monitor is equipped with a dual-position advanced material binding Post for connecting the speaker cables. Spade lugs designed for #10 screws are recommended for cable termination. WARNING: Do NOT over-tighten the screw. Connecting the Speaker to the Amplifier 1.
  • Page 7 Figure 3.1 – Connecting to the Loudspeaker Binding Posts. Check to insure the correct polarity (positive lead connected to the (+) terminal and negative lead connected to the (-) terminal.

  • Page 8: Break-In Period

    4 Break-in Period Your new Avalon Profession Products loudspeakers have an initial break-in period. They will not perform to their full sonic potential when first installed in your system. This is partially due to a residual polarization of the dielectric materials used in the crossover capacitors and internal wiring.

  • Page 9: Maximizing Performance

    5 Maximizing Performance These details are imperative to obtaining optimum results from your Avalon Professional Products Loudspeakers. Break-in The break -in period is critical to maximizing sonic performance and should take place before other adjustments (see the discussion on page 8).

  • Page 10: Mounting Feet Spikes

    Port Selection The Mixing Monitor is supplied with a 2.5” long port installed from the factory, which is tuned to a frequency of approximately 36 Hz. Included with your Mixing Monitors are two additional pairs of ports for fine tuning of your system.
  • Page 11 Your Mixing Monitor ports are held in place with three clips (See Figure 5.1). To change ports, remove the port clips by removing the port screws using the supplied allen wrench. Once the screws and clips are removed, the installed port may be removed and replaced by the new ports.

  • Page 12: Care Of Your Avalon Loudspeakers

    6 Care of Your Avalon Loudspeakers Cabinet (Black Textured Finish) The Black Textured finish is an extremely durable high-tech coating. However, due to its textured surface, it requires different care procedures than other finishes. For normal dusting, a lint-free cloth or feather duster should be adequate.

  • Page 13: Technical Details

    Avalon Professional Products has spent a lot of time and effort together with those engineers to produce a product that works like...

  • Page 14: Basic Architecture

    Impulse testing (Figure 7.1) demonstrates the correct time alignment of tweeter and woofer. The facets and the backward leaning architecture are fundamental for any Avalon product. What is new is the extra emphasis we put into transient response. It is a proven fact that human hearing has several mechanisms that determine what a sound is and where it comes from.
  • Page 15 The smooth decay plot reveals the Mixing Monitor to be free from resonance and distortion. Figure 7.2 – 3-D Waterfall graph of The Mixing Monitor, demonstrating...
  • Page 16 Figure 7.3 – Polar Response of the Mixing Monitor. The combination of State-of-the-Art diaphragm materials, proprietary crossover circuitry, and renowned cabinet construction in The Mixing Monitor produces a smooth and wide polar response that reproduces music unparalleled in accuracy, imaging, and resolution. Note the cardioid pattern that is smooth, wide, and without “lumps”.

  • Page 17: How To Use The Mixing Monitor

    How to use the Mixing Monitor This monitor is designed as a quasi mid-field speaker. This means the distance for optimal frequency and impulse response is between 1.2x and 1.4x (with x being the distance from tweeter to tweeter). Theoretically the loudspeakers...

  • Page 18: Room Position

    8 Room Position Introduction The listening room forms the final link of the playback system, as important as any other component in the chain. Just as an otherwise superb system is handicapped by an inferior pre-amplifier (for example), so can a well-matched system be hindered by poor room acoustics.

  • Page 19: An Optical Analogy

    An Optical Analogy Let us use an optical analogy to aid our understanding of acoustics. Imagine that you are in a room that is lit only by a candle in its center. There is a uniform amount of light cast in all directions. If a large mirror is held closely to a candle, one half of the room becomes darkened, while the other half receives twice as much light.

  • Page 20: Standing Waves

    8.1 Standing Waves The parallel surfaces of most listening rooms can lead to a potential problem in the low frequencies. A sound wave can be repeatedly reflected from opposing surfaces, back and forth. If the distance between the surfaces is an integral multiple of one-half the sound wavelength, a standing wave will be set up.

  • Page 21: Flutter Echo

    8.2 Flutter Echo These same parallel, reflective surfaces can also produce a different audible problem. If there is little absorption at higher frequencies, a musical transient containing high frequencies, such as a hand clap or the strike of a percussion instrument, can be heard bouncing repeatedly between the surfaces.

  • Page 22: Early Reflections

    8.3 Early Reflections Another situation that can reduce the subjective quality of reproduced sound is the presence of early reflections. By early reflections, we are referring to reflected sound waves that reach the listener within 10 to 20 milliseconds of the direct signal from the loudspeaker.
  • Page 23 Since the floor is within five feet of the speaker, it is best to have a carpeted floor to absorb floor reflections. A thick, dense carpet and pad will absorb lower frequencies more effectively than a thin one. Due to their complex structure, carpets and pads of natural materials, such as wool and jute, will exhibit a more uniform absorption over the frequency spectrum than synthetic materials will.

  • Page 24: Bass Reinforcement

    8.4 Bass reinforcement By bass reinforcement, we mean the effect of the room boundaries on the propagation of sound. It is widely known that speaker placement relative to the floor and walls can affect the relative amount of bass that the system produces.
  • Page 25 As frequency increases and wavelength becomes more similar to the distance to the boundary, the phase difference between original and reflected waves increases, and the air coupling effect is diminished. In particular, when the wavelength equals about four times the distance to the boundary, the reflected wave is antiphase to the original wave, resulting in a cancellation (dip) in the output.
  • Page 26 There are typically three reflective surfaces near each speaker: the floor, the rear wall, and the side wall. Each of these surfaces produces its own reflection, and hence its own cancellation and reinforcement. By properly selecting the distances to each surface, we can provide a uniform and extended bass response.

  • Page 27: Summary Of Recommendations

    8.5 Summary of Recommendations Now that we have looked at some of the common problems of listening rooms, as well as their remedies, let us summarize our findings and recommendations. Flutter Echo and Standing Waves These situations are the result of the room having parallel, reflective surfaces. The potential problems are independent of the audio system, and need to be addressed at the source.

  • Page 28: Speaker Placement

    The suggested minimum distances for the Mixing Monitor are two feet from one wall (side or rear), and four feet from the other (all distances are measured to the center of the woofer cone).

  • Page 29: A Control Room Example

    8.6 A Control Room Example In order to make these points more clear, an example of a control room layout is given in Figure 8.5 and Figure 8.6, illustrating the principles we have given. Figure 8.5 - Control Room Overhead View. The area around the speakers is free of objects that would produce early reflections.
  • Page 30 Figure 8.6 - Control room Front View. The speakers are elevated slightly from the listener’s ears, and they may be toed in slightly.

  • Page 31: Warranty

    If driver replacement is required, have your dealer contact Avalon Professional Products. The individual performance curves of the drivers in each pair of loudspeakers are kept on file at the factory. This enables Avalon Professional Products to supply an exact replacement unit, ensuring continued operation at the highest level of performance.
  • Page 32 6. The above warranty is the sole warranty given by Avalon Professional Products, and is in lieu of all other warranties. All implied warranties, including...

  • Page 33: Features

    10 Features Advanced light weight driver diaphragm materials minimize energy • storage and time-domain distortion. Each driver individually tested and matched for optimum • performance. Smooth, wide polar response for superlative imaging capabilities. • Moderate impedance characteristic allows for ideal interface with •...

  • Page 34: Specifications

    11 Specifications Driver Complement 1" concave ceramic dome tweeter 7" concave ceramic woofer Sensitivity 87 dB (2.83V, 1 meter) Impedance 6 ohms (5.5 ohms minimum) Frequency Response 58Hz to 24kHz (+/- 1.5 dB, anechoic) (In room, typical -3 dB point is below 46Hz) Recommended Amplifier Power 15 to 150 watts...

  • Page 35: Notes

    12 Notes...

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