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T L Audio
INDIGO SERIES
User Manual
EQ-2012 PARAMETRIC VALVE EQUALISER
Tony Larking Professional Sales Limited,
Letchworth, England.
Tel: 01462 490600. International +44 1462 490600.
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile
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Summary of Contents for TL Audio INDIGO EQ-2012
- Page 1 T L Audio INDIGO SERIES User Manual EQ-2012 PARAMETRIC VALVE EQUALISER Tony Larking Professional Sales Limited, Letchworth, England. Tel: 01462 490600. International +44 1462 490600. interstage Phistersvej 31, 2900 Hellerup, Danmark Telefon 3946 0000, fax 3946 0040 www.interstage.dk - pro audio with a smile...
- Page 2 INTRODUCTION The T L Audio Indigo Series combines classic valve techniques with low noise solid state circuitry to produce audio processing units offering very high quality signal paths with comprehensive control facilities and the unique valve sound. The EQ-2012 is a four band, fully parametric valve equaliser. The four bands may be configured as two bands on each of the equaliser’s two channels, or cascaded to form a single channel, four band equaliser.
- Page 3 PRECAUTIONS The T L Audio EQ-2012 Parametric Valve Equaliser 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,...
- Page 4 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 Audio Inputs. Each channel has a female, 3 pin XLR connector, suitable for balanced or unbalanced line sources at a nominal level of +4dBu. The mating connector should be appropriately wired as follows for balanced or unbalanced operation: Balanced inputs: - Pin 1 = Ground (screen).
- Page 6 The auxiliary 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. Balanced Outputs. The output is via a balanced, 3 pin male XLR connector. The mating connector should be wired as follows: - Pin 1 = Ground (screen), - Pin 2 = Signal Phase (“+”...
- Page 7 OPERATION. Front Panel. The front panel controls are identified in fig.2. Input Gain. The input gain of the equaliser may be varied over a range of +/-20dB, which combined with the different sensitivity inputs, provides adequate and precise control of signal level. Generally, enough gain should be applied to make the peak LED glow on the louder sections of music, without causing the LED to illuminate brightly for an extended time.
- Page 8 reduce a broader range of frequencies, typically to make an instrument or vocal “stand out”, or recede, into the mix. Finally, low Q values (down to about 0.5 on the 2012) provide more gentle contouring, o r “sweetening” of the response. Band 1.
- Page 9 This mode allows all four bands to be placed in the same audio path, for very comprehensive equalisation tasks. In dual channel or stereo mode, the frequency ranges of band 2 would normally be the same as band 4, and band 3 would normally follow band 1. However, in 4 band mode, the range select switches allow the bands to be split into traditional LF, LM, HM and HF areas.
- Page 10 SPECIFICATIONS Balanced Line Input: Electronically balanced, unbalanced compatible, with input impedance greater than 5Kohm. Gain range -20dB to +20dB. Nominal input level +4dBu. Maximum input level +26dBu. 3 pin female XLR connector. Unbalanced Input: Input impedance greater than 5Kohm. Gain range -20dB to +20dB. Nominal input level -10dBu.
- Page 11 Band 3: Cut and Boost: +/-15dB. Frequency Range: 30Hz to 1K2Hz, 300Hz to 12KHz with multiply by 10 switch. Q variable 0.5 to 5. Band 4: Cut and Boost: +/-15dB. Frequency Range: 1KHz to 18KHz. Q variable 0.5 to 5. Balanced Outputs: Electronically balanced, unbalanced compatible.
- Page 12 Dynamic Range: 100dB. Power Requirements: Rear panel selectable for 220-240V 50Hz or 110-120V 60Hz operation. Rear panel fuse 20mm, 1AT, 250V. Power consumption 30VA typical. Detachable 3 pin IEC connector, mating connector and cable supplied. Front panel On/Off switch with green LED. Dimensions: 19”...
- Page 13 Serial Number......Date purchased......Dealer......... interstage Phistersvej 31, 2900 Hellerup, Danmark Telefon 3946 0000, fax 3946 0040 www.interstage.dk - pro audio with a smile...
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