Summary of Contents for Tony Larking Professional Sales Limited TL Audio 5050
- Page 1 T L Audio IVORY SERIES User Manual 5050 VALVE PRE-AMPLIFIER / COMPRESSOR Tony Larking Professional Sales Limited, Letchworth, England.
- Page 2 INTRODUCTION The T L Audio Ivory Series consists of a range of hybrid valve signal processors, which utilise low noise solid state electronics in conjunction with classic valve circuitry to produce audio processing units offering very high quality signal paths with the unique valve audio character.
- Page 3 PRECAUTIONS The T L Audio 5050 Pre-Amplifier requires very little installation, but like all electrical equipment, care must be taken to ensure reliable, safe operation. The following points should always be observed: - All mains wiring should be installed and checked by a qualified electrician, - Ensure the correct operating voltage is selected on the rear panel before connecting to the mains supply,...
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Page 4: Installation
INSTALLATION AC Mains Supply. The unit is fitted with an internationally approved 3 pin IEC connector. A mating socket with power cord is provided with the unit, wired as follows: Brown: Live. Blue: Neutral. Green/Yellow: Earth (Ground). All mains wiring should be performed by a qualified electrician with all power switched off, and the earth connection must be used. - Page 5 - Pin 1 = Ground (screen). - Pin 2 = Signal Phase (also known as “+” or “hot”). - Pin 3 = Signal Non-Phase (“-” or “cold”). Unbalanced inputs: - Pin 1 = Ground (screen) - Pin 2 = Signal Phase (“+” or “hot”). - Pin 3 = Signal Ground.
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Page 6: Operation
- Screen = Ground. The input is suitable for direct connection of instruments including guitars and keyboards. Good quality screened cable should be used, particularly for microphone or low level sources, to prevent hum or noise pickup. Output. An unbalanced line output is provided, on a 0.25” mono jack socket. - Tip = Signal Phase (“+”... - Page 7 Phantom Power. Phantom power should only be used with suitable microphones (i.e. condenser microphones). It is applied to the mic socket by the push button switch next to the input selection switch. WARNING: Always turn the master output level to minimum before switching phantom power on or off, and before connecting or disconnecting a microphone.
- Page 8 reducing hum, rumble caused by traffic or wind noise, and excessive LF signal content from close mic applications. Compressor Section. Compressor Operation. A compressor functions by reducing the gain of the signal when it exceeds a certain level, or threshold. The amount of gain reduction may be fairly gentle through to limiting, where the signal is clamped at the threshold level.
- Page 9 A “Hold” circuit delays the onset of release for approximately 10msec after the input signal reduces below the threshold. This feature helps to reduce the distortion commonly caused when using a compressor with a short release time to process a low frequency signal, for example a bass guitar, where the compressor attempts to modify the gain during each half cycle of the input waveform.
- Page 10 The left-hand meter indicates the gain reduction occurring at the compression stage. It will give a continuous reading, even if the compressor is bypassed. It should be noted that the gain reduction indication is most useful as a measure of the compression of the signal, and therefore does not include the effect of any gain make-up that may be applied.
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Page 11: Specifications
SPECIFICATIONS Microphone Input: Electronically balanced. Input impedance greater than 2Kohm. Gain range +16dB to +60dB. Noise -127dBu (EIN with 150 ohm source, 22Hz - 22KHz and maximum gain). 3 pin female XLR connector. Phantom Power: +48V at 10mA maximum. High Pass Filter: -3dB at 90Hz, 12dB per octave. - Page 12 Output Fader: Rotary fader, 0dB at centre, +15dB maximum gain. Output: Unbalanced. Output impedance 47 ohms. Maximum level +20dBu. 2 pole 0.25” jack socket. Frequency Response: 10Hz to 40KHz, +0, -1dB. Noise: -80dBu, 22Hz to 22KHz, line input selected at 0dBu input and output gain.
- Page 13 SERVICE Should the Pre-Amplifier require service, it must be taken or posted to an authorised dealer. Please retain the original packing for possible future use, and ensure the unit is suitably protected during transit. The manufacturer cannot accept responsibility for damage caused during transportation.
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