Instruction/ maintenance manual of the product T1952 Behringer
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TUBE COMPOSER ® T1952 www.behringer.com V e r s i o n 1 . 1 O c t ober 2001 Users Manual ENGLISH.
2 TUBE COMPOSER T1952 This symbol, wherever it appears, alerts you to important operating and mainte- nance instructions in the accompanying literature. Read the manual. SAFETY INSTRUCTIONS C A U T IO N : To reduce the risk of electric shock, do not remove the cover (or back).
3 TUBE COMPOSER T1952 FOREWORD Dear Customer, We thank you for expressing your confidence in BEHRINGER products by purchasing the BEHRINGER TUBECOMPOSER.
4 TUBE COMPOSER T1952 T1952 TUBECOMPOSER ® Interactive Tube Dynamic Processor.
5 TUBE COMPOSER T1952 T ABLE OF CONTENTS 1 . INTRODUCTION . . ................................................................................................................... 6 1.1 The concept .......................................................
6 TUBE COMPOSER T1952 1. INTRODUCTION In purchasing the new TUBECOMPOSER T1952, you have acquired an extremely efficient and universal dynamics processor, which combines the precision of the solid state technology with the warmth and liveliness of tube technology.
7 TUBE COMPOSER T1952 expander/gate section can be used as an independent unit to eradicate noise offering almost limitless possibilities within this application.
8 TUBE COMPOSER T1952 1. 3 Control elements Fig. 1.1: Front of the TUBECOMPOSER The BEHRINGER TUBECOMPOSER has two identical channels. Each channel is equipped with 7 toggle switches, 9 rotary controls, 6 LEDs and 2 VU meters. The CH 1 MASTER switch is for stereo operation: Fig.
9 TUBE COMPOSER T1952 6 The THRESHOLD control sets the threshold point for the Compressor section. It has a range of -40 to +20dB. The Soft Knee characteristic is applied to the signal exceeding the threshold point by a maximum of 10dB. Above 10dB, the signal would experience Hard Knee compression.
10 TUBE COMPOSER T1952 Fig. 1.3: Control elements of the peak limiter and tube sections 17 The VU METER can display three levels: the actual gain reduction of the compressor, the input or the output level. Gain reduction is displayed in a range of 1 to 30dB, the input or output level is displayed in a range of -30 to +10dB.
11 TUBE COMPOSER T1952 26 28 30 31 29 27 25 Fig. 1.4: Back panel of the TUBECOMPOSER 25 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.
12 TUBE COMPOSER T1952 2.1 Compression/levelling/limiting/clipping Now that the functions of the individual sections have been clearly explained, we would like to acquaint you with more terms and relationships of the dynamics process. Compression A compressor converts a large dynamic level into a restricted range.
13 TUBE COMPOSER T1952 Threshold Gain 0 dB Input Output 1:o o Noise Gate, Expander , 1:8 IRC-Curve Fig. 2.1: IRC curve characteristic of the expander The result is expansion, which is less critical to adjust and which is more tolerant of useable signals, whose level is slightly above that of the noise floor.
14 TUBE COMPOSER T1952 If the controls are set correctly, the drum sounds will be dry, sharp and clearly defined. If you do not have enough mics (or TUBECOMPOSER channels!) to record ea.
15 TUBE COMPOSER T1952 Control element Setting IN/OUT switch IN SC EXT switch O FF SC MON switch OFF INTERACTIVE/HARD KNEE switch INTERACTIVE SC FILT ER switch OFF THRESHOLD c ontrol of the c ompr essor s ection +20 dB RATIO c ontrol 3:1 AUTO sw i tch AUTO OUTPUT control 0 dB LIMITER control OFF GAIN RED.
16 TUBE COMPOSER T1952 Output Input Peak Limiting Program Limiting Release Threshold t/ms Level 20 ms 10 20 30 5 ms approx. 1 s Fig. 2.3: IGC characteristic of the limiter section The diagram illustrates the functioning of the IGC limiter. The solid graph represents the output signal, while the dashed graph above shows the input signal response.
17 TUBE COMPOSER T1952 2. 6 The vacuum tube of the TUBE COMPOSER Our engineering team has made it possible to enhance the traditional tube circuitry (particularly for our TUBE COMPOSER) and adapt it to meet the high sound quality and dynamics requirements of modern, pro-level audio technology.
18 TUBE COMPOSER T1952 3.1 .3 The TUBECOMPOSER in digital recording and sampling In an analog recording, too low recording levels lead to an increased noise level, whereas too high levels will cause a compressed and squashed sound. In extreme cases, it will cause distortion due to tape saturation.
19 TUBE COMPOSER T1952 as the last link in the chain preceding the power amp. Thus, you can effectively avoid damage to the midrange/ tweeter range caused by clipping of the high-energy bass signals.
20 TUBE COMPOSER T1952 3. 3 The TUBECOMPOSER as a sound effects unit In the early 1960s, musicians began looking at the recording process as a way to create new sounds.
21 TUBE COMPOSER T1952 3. 6 Side chain 3.6.1 The TUBECOMPOSER as De-Esser De-essing is a special application of frequency selective compression.
22 TUBE COMPOSER T1952 3.6.3 Suppressing instruments during recording Another function of the BEHRINGER TUBECOMPOSER allows helpful correction of previously recorded material. If, for example, an excessively loud bass drum needs to be suppressed, reduce all the equalizers frequency bands above 150Hz.
23 TUBE COMPOSER T1952 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.
24 TUBE COMPOSER T1952 frequencies are equally affected, we term this white noise. It is fairly obvious that electronics cannot function without components. Even if special low-noise components are used, a certain degree of basic noise cannot be avoided.
25 TUBE COMPOSER T1952 Fig. 4.3: The interactive relationship between the operating level and the 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 incurring signal distortion.
26 TUBE COMPOSER T1952 level of noise, hum or other ambient background hiss, which can disturb the quality of the program material. Normally these noises are inaudible if the level of the desired signal lies significantly above the level of the noise.
27 TUBE COMPOSER T1952 processing meant the beginning of a new era of recording media that provided plenty of dynamic response and allowed for loss-free copying of audio signals. As digital media were enhanced, however, many people began to miss the warmth, power and liveliness they knew from analog recordings.
28 TUBE COMPOSER T1952 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.
29 TUBE COMPOSER T1952 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 mimicked with highly sophisticated circuitry.
30 TUBE COMPOSER T1952 Video tape Compact Disc Analog records FM Radio Digital tape (16 Bit) Analog tape dB 100 75 50 25 analog Mixing console Fig. 4.8: Dynamic range of various media 5. INSTALLATION 5. 1 Rack mounting The BEHRINGER TUBECOMPOSER fits into one standard 19" rack unit of space (3 1/2" / 89.
31 TUBE COMPOSER T1952 for trouble-free operation, even at high operating levels. Externally induced mains hum etc. will be effectively suppressed. The automatic servo-function recognizes the presence.
32 TUBE COMPOSER T1952 6. SPECIFICATIONS Audio input Connectors XLR and 1/4" TRS Ty pe RF filtered, servo-balanced input Impedance 50 k O h m balanced, 25 kOhm unbalanced Nominal operating level +4dBu/-10dBV switchable Max. input level +21dBu balanced and unbalanced CMRR t y p .
33 TUBE COMPOSER T1952 Peak Limiter section T yp e IGC (Interactive Gain Control) peak limiter Threshold va r i a b l e ( + 4 d B t o OFF (+22dBu)) Ratio oo:1 Stage 1 limiter type Clipper A t t a c k zero Release zero Stage 2 limiter type program limiter Att ack program dependent, typ.
34 TUBE COMPOSER T1952 7. WARRANTY The information contained in this manual is subject to change without notice. No part of this manual may be reproduced or transmitted in any form or by any means, el.
An important point after buying a device Behringer T1952 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Behringer T1952 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Behringer T1952 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Behringer T1952 you will learn all the available features of the product, as well as information on its operation. The information that you get Behringer T1952 will certainly help you make a decision on the purchase.
If you already are a holder of Behringer T1952, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Behringer T1952.
However, one of the most important roles played by the user manual is to help in solving problems with Behringer T1952. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Behringer T1952 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
