T L Audio User Manual Ebony Series A1 Dual Pre-Amp TL Audio Limited, Letchworth, England. Tel 01462 492090, Fax 01462 49209
9 OPERATION. Microphone Input The 2 XLR mic inputs are at the rear of the Ebony A1. Virtually any low impedance professional microphone can be
10 Tube Stage Drive and Peak LEDs. These LEDs indicate the drive level to the tube, or valve, stage. The Drive LED is a variable intensity indic
11 GETTING STARTED 1. Having powered up the Ebony A1 and ensured all the gain controls are at minimum connect its line output to the desi
12 SPECIFICATION. Mic Input: Discrete Class A circuitry from input to output (unless Tube stage In). Gain Range: +16dB to +60dB (-14dB to +30dB w
13 Tube Stage: Typical Distortion: 1% to 10%, depending on “Drive” level, predominately second harmonic. Noise: -80dBu (22Hz to 22KHz), output gai
14 SERVICE Should the unit require service, it must be taken or posted to an authorised dealer with a description of the fault. Please retain the
1 TABLE OF CONTENTS TABLE OF CONTENTS...
2 INTRODUCTION New from TL Audio, The Ebony Series is a sleek looking range of discrete Class A processors designed to heighten your audio experi
3 Why Tubes? Valves - or “Tubes” - have long been associated with excellent audio quality, recognised as adding “warmth” or “depth
4 The block diagram of one of the channels is shown in fig.1. A discrete Class A electronically balanced mic input amplifier is
5 PRECAUTIONS The T L Audio Ebony Series units require very little installation, but like all electrical equipment, care must be taken to ensure
6 BLOCK DIAGRAM.
7 INSTALLATION AC Mains Supply. The unit is fitted with an internationally approved 3 pin IEC connector. A mating socket with pow
8 in a loss of level and/or increased noise. Good quality screened cable should be used, particularly for microphone or low level sources, to preven
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