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®
TLA
udio
user manual
Ivory 2 Series
5000
GOLD DIAPHRAGM VALVE
CONDENSER MIC & PREAMP
interstage
Phistersvej 31, 2900 Hellerup, Danmark
TL Audio Ltd, Letchworth, Herts, SG6 1AN, UK
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile
email: info@tlaudio.co.uk web: http://www.tlaudio.co.uk
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Summary of Contents for TLAudio Ivory 2 Series
- Page 1 ® udio user manual Ivory 2 Series 5000 GOLD DIAPHRAGM VALVE CONDENSER MIC & PREAMP interstage Phistersvej 31, 2900 Hellerup, Danmark TL Audio Ltd, Letchworth, Herts, SG6 1AN, UK Telefon 3946 0000, fax 3946 0040 www.interstage.dk - pro audio with a smile...
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Page 2: Table Of Contents
CONTENTS Introduction Precautions Installation AC Mains Supply Audio Operating Level Microphone Input Balanced Preamp Output Microphone Out Switch Unbalanced Monitor Output Link In and Link Out Connections Ventilation Rear Panel Microphone Operation Microphone Overview Warm Up Period Elastic Suspension Mount Pop Shield 10dB Pad 120Hz Low Cut Filter... -
Page 3: Introduction
Congratulations on purchasing the Ivory 5000 valve microphone & preamp by TL Audio! The Ivory 2 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 units offering very high quality signal paths with the unique valve audio character. - Page 4 FIG 1: FRONT OF MICROPHONE FIG 2: REAR OF MICROPHONE 120Hz LOW 10dB PAD CUT FILTER CONNECTION TO 5000 PSU/PREAMP...
- Page 5 FIG 3: BLOCK DIAGRAM...
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Page 6: Precautions
PRECAUTIONS The 5000 microphone and preamp require 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 7: 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 8: Balanced Preamp Output
- Pin 1 = Valve HT supply - Pin 2 = Valve heater + supply - Pin 3 = Polar Pattern Bias - Pin 4 = Ground - Pin 5 = Mic – output signal - Pin 6 = Mic + output signal - Pin 7 = Ground This connector is designed only to interface with the Ivory 5000 microphone - do not attempt to connect any other microphones via this connector, or damage may result to both microphone and/or preamp. - Page 9 FIG 4: POLAR AND FREQUENCY RESPONSE (CARDIOID MODE) 0° 3 3 0 ° 3 0 ° - 1 0 3 0 0 ° 6 0 ° - 2 0 2 7 0 ° 9 0 ° 2 4 0 ° 1 2 0 °...
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Page 10: Link In And Link Out Connections
Link In and Link Out Connections. Both these connections are provided on a separate balanced 0.25” stereo jack socket: - Tip = Signal Phase (“+” or “hot”). - Ring = Signal Non-Phase (“-“ or “cold”). - Screen = Ground. These connections are provided to allow a pair of 5000 microphone/preamp systems to be used with a single DO-2 digital output card - see section 5.12. -
Page 11: Elastic Suspension Mount
recording commences. It is also important that the microphone is stored at normal room temperature and in dry conditions, since cold and moisture can affect the noise performance of the capsule. Elastic Suspension Mount. Use of the supplied suspension mount is advised to prevent strong mechanical vibrations being transmitted to the microphone, either from the air or the microphone stand. - Page 12 FIG 5: FRONT PANEL DETACHABLE RACK EARS PREAMP SECTION OUTPUT SECTION FIG 6: REAR PANEL SLOT FOR OPTIONAL DO-2 CARD IEC INLET MONITOR OUTPUT PREAMP OUTPUT LINK CONNECTORS CONNECTION TO MICROPHONE...
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Page 13: Omnidirectional Response
Omnidirectional response. In this position the diaphragm responds equally to sound pressure changes irrespective of which direction they are coming from, so this setting is useful for recording sources where plenty of room ambience is desirable in the recorded sound. This might include choral or organ music where the acoustics of the recording location are integral to the quality of the recording. -
Page 14: Phase Reverse
Phase Reverse. This switch reverses the polarity of the preamp signal and is a correctional function either for incorrect microphone wiring or for out-of-phase microphone positioning. The latter problem is encountered when two or more microphones are used on the same signal source and phase cancellation can occur. A symptom of phase cancellation is often a loss of low frequency content, but incorrect phase may not be obvious to an inexperienced ear. - Page 15 When clocking the DO-2 to an external source the sample rate setting on the DO-2 needs to be set to match the external sample rate, otherwise correct locking may not occur and audible clicking may appear on the digital output. In terms of gain, the DO-2 will generate a signal level of 0dBfs in the digital domain when +18dBu of output level is generated at the balanced line output of the 5000 preamp.
- Page 16 MIC 1 MIC 2 DO-2 CARD PREAMP 1 PREAMP 2 LINK OUT LINK IN PREAMP 1 STEREO TRS JACK-TO-JACK CABLE SPDIF STEREO DIGITAL OUTPUT FIG 7: LINK FACILITY...
- Page 17 SPECIFICATIONS Microphone: Directional Pattern: 9 positions from Omni, via Cardioid through to Figure-of-8. Sensitivity: 14mV/Pa = -37dB (0dB = 1V/Pa). Frequency Response: 20Hz – 20kHz. Low Cut Filter: 120Hz @ 6dB/octave. Impedance: Less than 300 Ohms. Max SPL: 130dB (1kHz, 1% THD). Equivalent Noise: 18dB-A (IEC 268-4, A weighted).
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Page 18: Link Facility
PSU/Preamp: Microphone Input: Input impedance greater than 2kohm. Gain range +16dB to +60dB. Noise -127dBu (EIN with 150 ohm source, 22Hz – 22kHz 60dB gain). 7-pin female XLR connector to supplied cable only. Input Gain Range: +16dB to +60dB, continuously variable. Output Gain Fader: Centre detent at 0dB, max gain +15dB. - Page 19 Dimensions: 2U case, with supplied rack ears. 483mm wide x 88mm high x 200mm deep (19” x 7.9” x 3.5”) rack mounting. 432mm wide x 88mm high x 200mm deep (17” x 7.9” x 3.5”) free standing. Power Requirements: Rear panel selectable for 220-240V 50Hz or 110-120V 60Hz operation.
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Page 20: Service
SERVICE Should the 5000 microphone or preamp 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. The microphone and preamp are supported by a limited warranty for a period of one year from the date of purchase.
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