A-20 Owners Manual A-20 Left Monitor Serial Number: A-20 Right Monitor Serial Number: A-20 Control Amplifier Serial Number: Copyright 2001 NHTPro, a Recoton Corporation Brand
Safety Instructions -- Please Read First CAUTION: To reduce the risk of electric shock, do not remove the cover (or back). No user serviceable parts are inside; refer servicing to qualified personnel. WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. This symbol wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure that may be sufficient to constitute a risk of electric shock.
INTRODUCTION: Thank you for your selection of the A-20. Your studio monitors are a critical element in the countless decisions made during recording, mixing, mastering and other key aspects of audio production. They must deliver a transparent, neutral and revealing assessment of sound, so that you have the information you need to choose and place microphones, set Eq’s, balance mixes... In other words, deliver exceptional product. The A-20 is capable of state of the art sonic resolution and flexibility.
SYSTEM CONNECTIONS: CAUTION: MAKE ALL CONNECTIONS WITH THE AC POWER OFF! CAUTION: CONNECTING THE OUTPUT OF THE A-20 CONTROL AMPLIFIER TO ANY EQUIPMENT OTHER THAN THE A-20 OR C-20 MONITOR MAY CAUSE EQUIPMENT DAMAGE. CONTROL AMPLIFIER INPUT SECTION: The A-20 Control Amplifier accepts both balanced and unbalanced inputs on either XLR or 1/4” TRS connectors.
USING THE A-20 CONTROL FUNCTIONS: The A-20 controls are designed for utility and repeatability under varying conditions. You should find the effects of the controls sonically subtle, with little impact on the basic character and accuracy of the speaker. We encourage experimentation to fine tune the system to the requirements of your particular installation. +11 +4 1 -3 M -10 2 MF 0 POWER FF NF 100 MODE SENSITIVITY BOUNDARY POSITION SPL VAC PHONES TMP A-20 Control Amplifier Fig.
BOUNDARY CONTROL: Reflective boundaries, such as floors, walls, even table tops, reinforce a speaker’s low frequency output. Conversely, placing speakers out into a room decreases bass response. The highest low frequency output is with the BOUNDARY control in the “0” position, which assumes no significant boundary reinforcement is present. Each control step attenuates low frequencies by 1.5 dB (at 50 Hz), with rapidly decreasing effect above 300 Hz. Refer to the diagram in Fig.
SPEAKER PLACEMENT: The A-20 Monitor System is intended to provide consistent performance over a wide range of placement situations. This is accomplished through the use of electrical controls, wide dispersion drivers, advanced enclosure design and carefully chosen crossover characteristics. Nevertheless, it is always worth investing time and effort experimenting with optimum loudspeaker placement.
SYSTEM SPECIFICATIONS: Type: Modular, two- piece powered near/mid/far field monitor. Configuration: 2-way acoustic suspension. Woofer: 6.5" curvilinear treated paper. Butyl surround. Tweeter: 1" metal dome, textile surround, ferrofluid cooled and damped. Magnetic Shielding: Partial, 12-18” working distance from PC monitor recommended. PERFORMANCE SPECIFICATIONS: Amplifier Power: 250W (continuous RMS/ch), 400W (100ms peak). Peak Acoustic Output: 117 dB SPL (100ms pink noise @ 1M).
