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User's Manual
S-8 8-CHANNEL MIXING CONSOLE
R
LTO
www.altoproaudio.com
Version 2.0 Dec. 2002
English
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the recommended fuse type as indicated in this manual. SAFETY RELATED SYMBOLS Do not short-circuit the fuse holder. Before replacing the fuse, make sure that the product is OFF and disconnected CAUTION from the AC outlet. RISK OF ELECTRIC SHOCK DO NOT OPEN Protective Ground This symbol, wherever used, alerts you to the pre- Before turning the product ON, make sure that it is sence of un-insulated and dangerous voltages with- connected to Ground. This is to prevent the risk of in the product encl
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PREFACE Dear Customer: Thank you for choosing the LTO S-8 8-Channel Mixing Console, which is the result of our LTO AUDIO TEAM's endeavours. For the LTO AUDIO TEAM, music and audio is more than a profession, it is a passion and an obsession! We have, in fact, been designing professional audio products for a number of years in cooperation with many of the world's major brands. The LTO line represents unparalleled analogue and digital products made by musicians, for musicians. With our design centr
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TABLE OF CONTENTS 1.INTRODUCTION.........................................................................................................................................................4 2.FEATURES.................................................................................................................................................................5 3.READY TO START?...........................................................................................................................
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1. INTRODUCTION Your S-8 is a 8-channel mixer and it is one of the most popular compact mixing consoles in the world. In fact it has been sold already in terms of thousands of units worldwide. Despite its compact dimensions, great performances and sound quality are insured thanks to the specification of the components used and the building quality. Your S-8 is packed with features that can not be found in other consoles of its size: 5 Mono (these are provided with Ultra Low Noise microphone prea
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2. FEATURES Your S-8 is provided with 4 mono Line/Mic input, 1 stereo Line/Mic input and an additional stereo Line input to be used with keyboards, Midi Instruments, etc. We have even included a 2-track input/output for recording and playback. Ultra low noise microphone preamplifiers, 3 bands eq on all input channels, pre and post Auxiliary bus and phantom power complete the picture. 5 Input for Microphone and line provided with balanced 1/4" jack and XLR. Channel 5 features stereo Line input 1
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3. READY TO START? 3.1 Please check the AC Voltage available in your Country before connecting your S-8 to the AC socket. 3.2 Be sure that the main power switch is turned off before connecting the Mixer to the AC socket. Also, you should make sure that all Input and Output Controls are turned down. This will avoid damages to your speakers and avoid excessive noise. 3.3 Before turning on the S-8 you shall connect it to a power amplifier and turn-on the mixer BEFORE the power amp- lifier. Once you
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4. CONTROL ELEMENTS STEREO AUX RETURN AUX SEND 2-TRACK IN/OUT LEFT(MONO) MIC 1 MIC 2 MIC 3 MIC 4 RIGHT 1 1 R L LTO S-8 2 1 2 1 2 1 2 1 8-CHANNEL MIXING CONSOLE LEFT RIGHT 3 3 3 3 2 2 R TAPE IN TAPE OUT BAL BAL OR OR BAL BAL OR OR BAL BAL OR OR BAL BAL OR OR LINE IN 5/6 LINE IN 7/8 UNBAL UNBAL UNBAL UNBAL UNBAL UNBAL UNBAL UNBAL 2 1 LINE IN 1 LINE IN 2 LINE IN 3 LINE IN 4 3 TRIM TRIM TRIM TRIM LEFT(MONO) LEFT(MONO) LEFT (MONO) MIC (MONO) TRIM +10dB -40dB LINE +10dB -40dB LINE +10dB -40dB LINE +10
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4. CONTROL ELEMENTS 4.1 The mono MIC/LINE channels 1 These are Channel 1 through Channel 4. You can connect balanced, low im- MIC 1 pedance microphones to the XLR socket. On the 1/4" phone jack you can connect either a microphone or a line level instrument. You shall never connect an unbalanced microphone to the XLR socket if you do not want to damage 2 1 both the Microphone and the Mixer. 3 48 Volt phantom power 4 1 It is available only to the XLR Mic sockets. Never plug in a microphone when ph
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5 4.4 STEREO INPUTS These are Channel 5 through 8. They are organised LINE IN 5/6 LINE IN 7/8 in stereo pair (5&6 pair also features XLR Mic Input) and they are provided with 1/4" TRS phone sockets. 2 1 3 5 If you connect only the left jack, the input will operate LEFT (MONO) LEFT(MONO) LEFT(MONO) in mono mode. MIC (MONO) TRIM RIGHT RIGHT 0dB 60dB MIC 4.5 The 3 BANDS EQUALISER A 3-band equaliser is provided for all input channels with a wide EQ range of frequency adjustment. HI HI 6 12kHz 12kHz
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4.6 AUX SENDS 9 These two controls will send the audio signal out to Auxiliary busses. AUX 1 is configured as PRE-FADER. It means that the signal is sent out before reaching the main Fader. This will be used for stage monitors. AUX 2 is configured as POST-FADER; therefore, the audio signal will EQ be affected by the Main Channel Fader. This will be used for effects HI HI and sound processors. However, Aux 2 can also be configured as 12kHz 12kHz Pre-Fader through any internal modification. (Pleas
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4.11 MASTER SECTION - MAIN MIX LEVEL 14 This Control sets the amount of signal sent either to the Main Out socket or to the Tape Output. - LED METER 15 This stereo 12 segments Led Meter will indicate the level of the overall output signal. - 2 TRACK signal path 16 17 If you push down the 2TK TO CONTROL ROOM button, the 2 TRACK IN signal will be routed into 2 1 the Control Room output and the level will be ad- 18 justed in level by the Control Room knob. -+15 -+15 - MAX AUX CONTROL CONTROL PHONES
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23 STEREO AUX RETURN AUX SEND 2-TRACK IN/OUT LEFT(MONO) RIGHT 1 1 L 22 LEFT RIGHT 21 2 2 R TAPE IN TAPE OUT - 2-TRACK IN/OUT 21 Input Use the Tape input if you wish to listen to your Mix from a Taper Recorder or DAT, You can assign the signal coming form the Taper Recorder either to a pair of studio monitor using the Control Room assignment on the front panel or you can also send the signal directly to the Main Mix. Output These 1/4" TRS sockets will route the main mix into a tape recorder. - ST
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4.12 REAR PANEL DESCRIPTION 25 4 POWER PHANTOM CAUTION RISK OF ELECTRIC SHOCK CAUTION: ON DO NOT OPEN REPLACE WITH THE SAME TYPE FUSE AND RATING WARNING: SHOCK HAZARD - DO NOT OPEN DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR OFF MAIN MIX OUTPUT CONTROL (BAL/UNBAL) ROOM OUTPUT RIGHT LEFT 2 1 2 1 LEFT LEFT 3 3 AC INPUT EUROPE 210-240V 50Hz Fuse:T250mAL RIGHT RIGHT RATED POWER CONSUMPTION: 18W USA / Canada UK / Aust 100-120V 60Hz 240V 50Hz Fuse:T500mA
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5. INSTALLATION AND CONNECTION Ok, you have got to this point you are now in the position to successfully operate your S-8. However, we advise you to read carefully the following section to be the real Master of your own Mix. Not paying attention enough to the Input signal level, to the routing of the signal and the assignment of the signal will result in unwanted distortion, a corrupted signal or no sound at all. So you should follow this procedure for every single channel: Turn down all Input
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5.1 SOME FINAL TIPS ON WIRING CONFIGURATION You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics. Ring=Right Signal Tip Sleeve Ring Strain Clamp Tip=Left Signal Sleeve=Ground/Screen Use for Headphone, Stereo Return 1/4" Stereo (TRS) Jack Plug Tip Sleeve Tip=Signal Strain Clamp Sleeve=Ground/Screen Use for Mono Line In, Mono 1/4"Jack Plugs 1/4" Mono (TS) Jack Plug Ring=Return Signal Tip Sleeve Ring Strain Clamp Tip=Send Signal Sleeve=Ground/Screen Us
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Ring=Return Signal (Connected together) To Channel Insert Sleeve=Ground/Screen Tip=Signal To Tape or FX Input Sleeve=Ground/Screen 'Tapped' Connection Direct Output Lead (Enables the Insert to be used as a Direct Output while maintaining the channel signal flow) To Processor Input Sleeve=Ground/Screen Tip=Send Signal Tip To Channel Insert Ring Ring=Return Signal Sleeve To Processor Output -Stereo lead for insert Connection (To be used when the processor does not employ a single jack connection f
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6. FOR THE EXPERTS WHO WANT TO KNOW MORE As we have told you previously in this Manual, the Aux Send 2 Control both on Mono and stereo channels is factory wired as POST-FADER. If you have some skill in electronic components soldering you can modify this setting and have all your AUX sends configured as PRE-FADER. Aux Aux (PRE) (PRE) Solder the PRE route Disconnect POST POST the POST route Before After Modification on mono and stereo channels 17
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7. SYSTEM BLOCK DIAGRAMS 18
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8. TECHNICAL SPECIFICATION Mono input channels Microphone input electronically balanced, discrete input configuration Frequency response 10Hz to 55kHz, + 3dB Distortion (THD & N) 0.005% at +4dBu, 1kHz Gain range 0dB to 60dB (MIC) SNR (Signal to Noise Ratio) 115dB Line input electronically balanced Frequency response 10Hz to 55kHz, + 3dB Distortion (THD & N) 0.005% at +4dBu, 1kHz Sensitivity range +15dBu to 45dBu Stereo input channels Line input Balanced Frequency response 10Hz to 55kHz, 3dB + Di
