BEHRINGER T1953 - Manuals

5 TUBE ULTRAGAIN T1953 TABLE OF CONTENTS 1. INTRODUCTION ..................................................................................................................... 6 1.1 The concept ..............................................................................................................

7 TUBE ULTRAGAIN T1953 therefore impair the performance of the units. The transformer-balanced outputs, commonly used in radio and TV engineering, can also be fitted retrospectively upon request. The BEHRINGER transformer OT-1 is designed to the highest exacting standards and is available as an acce...

9 TUBE ULTRAGAIN T1953 Fig. 1.3: Tube section of the TUBE ULTRAGAIN 8 Use the LEVEL control to set the signal gain at the input of the tube stage. The gain can be set from -20 to +20 dB, i.e. the signal can be attenuated or amplified by 20 dB. When the control is at its center position, the level is...

10 TUBE ULTRAGAIN T1953 14 SERIAL NUMBER . Please complete and return the warranty card within 14 days of the date of purchase. Otherwise, you will lose your right to the extended warranty. Alternatively, you can register online at our website under www.behringer.com. 15 FUSE HOLDER / VOLTAGE SELECT...

11 TUBE ULTRAGAIN T1953 The LEVEL control The LEVEL control sets the signal gain at the input of the tube stage. Use this control to adapt the TUBE ULTRAGAIN to either home recording level (-10 dBV) or professional level (+4 dBu). When this level is too low the tube effect becomes less audible and t...

12 TUBE ULTRAGAIN T1953 3.2 The TUBE ULTRAGAIN as a level converter Semi-professional devices in hi-fi and home recording environments are usually operated with a nominal level of -10 dBV (0.316 V), while the level used in studios is 0 dBu (0.775 V) or +4 dBu (1.23 V). So, when you connect devices o...

13 TUBE ULTRAGAIN T1953 0 20 40 60 80 100 120 140 160 Threshold Of Audibility Falling Leaves Recording Studio Quiet Apartment Normal Conversation "Loud" Office Power Drill Threshold Of Pain Jet Engine Machinery Hall Sound-Pressure Level (dB SPL) Fig. 4.1: Dynamic range of human hearing The r...

15 TUBE ULTRAGAIN T1953 Fig. 4.3: The interactive relationship between operating level and headroom The need therefore arises for a fast acting automatic gain control system which will constantly monitor the signals and which will always adjust the gain to maximize the signal-to-noise ratio without ...

16 TUBE ULTRAGAIN T1953 With the introduction of semiconductor technologies in the field of audio amplification it soon became clear that the tube would have to give way to the transistor, as this device featured an enormously enhanced signal- to-noise ratio, less complex power supply and improved f...

17 TUBE ULTRAGAIN T1953 Fig. 4.6: Pentode In a triode the capacitance between grid and anode is a problem with regard to high frequencies and large amplification factors. For this reason, the pentode has a positively charged screen grid between the control grid and the anode. However, the positive c...

18 TUBE ULTRAGAIN T1953 4.6 The best of both worlds Despite many efforts neither manufacturers nor developers have succeeded so far in simulating these positive properties of the tube by means of other devices. Additionally, the natural capabilities of the tube to act as a soft limiter can only be m...

19 TUBE ULTRAGAIN T1953 V ideo T ape Compact Disc Analog Records FM Radio Digital T ape (16 Bit) Analog T ape dB 100 75 50 25 Analog Mixing Console Fig. 4.8: Dynamic range of various media 4.9 Phantom power Condenser microphones need a specific supply voltage polarizing the condenser diaphragm. This...

21 TUBE ULTRAGAIN T1953 5.3 Audio connections As standard, the BEHRINGER TUBE ULTRAGAIN is installed with electronically servo-balanced inputs and outputs. This circuit design features automatic hum and noise reduction for balanced signals and thus allows for trouble-free operation, even at high ope...