TL AUDIO M4 TUBE CONSOLE
USER MANUAL TL AUDIO M4 1 TUBE CONSOLE
M4 INTRODUCTION......................................................................................................................................... 3 M4 MIXER TECHNICAL SPECIFICATION. ............................................................................................... 4 Mic Input: ........................................................................................................................................................ 4 Line Input:................................................
M4 Introduction The M4 is the perfect solution for the modern day studio. Anyone who has used or heard our outboard equipment, will be familiar with its ability to create a warm, smooth, and clean sound that can inject wonderful ‘feel’ into your recordings. Our acclaimed VTC console has also now been accepted as a great sounding must have in the professional recording environment, with many high profile users.
M4 User Manual M4 MIXER TECHNICAL SPECIFICATION. Mic Input: Balanced XLR socket with switchable 48V phantom power, Gain range +16dB to +60dB with 30dB pad, Frequency response +0, -2dB, 20Hz to 40KHz (at 40dB gain), Input noise (EIN) -127dBu (150 ohm source, 22Hz to 22KHz), Switchable +48V Phantom Power. Line Input: Balanced TRS jack socket, Input impedance 22Kohm, Gain range -20dB to +20dB, Maximum input level +26dBu. Phase Rev: Applies to Mic and Line inputs.
Level trim +/-15dB, Nominal level switchable to +4dBu or -10dBu, Noise -85dBu / -97dBu (+4dBu / -10dBu nominal), Maximum level +22dBu / +12dBu (+4dBu / -10dBu nominal), Balanced output on TRS jack. Fader: +12dBu 100mm “K” Series, Mute and PFL switches and LED’s, Routing to L+R busses via Pan control, “Drive” LED with illumination increasing from +4dBu to indicating valve signal level, “Peak” LED illuminating @ +19dBu, monitoring channel input amplifier and post fader signal.
Digital I/O: Optional digital ouput module for L+R outputs, and I/O module Dimensions: for each group of 8 channels. Outputs follow “Track” outputs, inputs normalled to analogue “Line” inputs. Please see separate sheets for digital specifications. All consoles are 815mm (32”) deep, plus at least 100mm (4”) at rear of console for PSU and audio connections, All consoles are 222mm (8.75”) high. Length of 16 channel console 694mm (27.3”), Length of 24 channel console 950mm (37.
M4 MIXER OPERATION Input Selection You must ensure that the correct input connector, mic or line, is being used from the required source. You can select the type of input by pressing the 'LINE' switch at the top right of each channel strip in or out. In the "up' position the mic input is selected; depressing the 'LINE' switch selects the line input as the source. Note that you can have mic and line inputs connected at the same time but will only be able to select a single input at a time.
Phase Reverse The phase reverse switch, located to the bottom left of the gain control and labeled 'PHASE', is used to invert the phase of the input signal. It is active on both mic and line inputs. This function could be required when processing a signal that is out of phase with other signals in a mix, in which case the resultant phase error typically appears as a loss of low frequency content, due to cancellation of out of phase components.
low-mid (LM) (i.e. it boosts or cuts a section of the audio spectrum around its selected centre frequency only.), peaking, sweepable high-mid (HM) and shelving high frequency (HF). The LF shelf operates at a frequency of 80Hz, while the HF shelf is set at 12kHz.
Pan Control The pan control positions the image within the stereo field, from fully left in the anticlockwise position, through centre at the dented position to fully right in the clockwise position. The gain law is -3dB at the centre. Mute Switch The channel may be muted or switched on without affecting the level set on the channel fader. Red LED indicators show which channels are currently muted.
Two 100mm faders control the stereo mix output level. Aux Masters Each aux send features a rotary master level control, which governs the overall level from the aux output. An associated PFL switch allows each aux send to be auditioned in isolation, by placing the aux signal (pre the master level control) on the PFL buss.
2-Track Return When recording the stereo mix output onto DAT or CD-R, for example, it is sometimes useful to be able to monitor the output from the mastering machine, in place of the mixer stereo output, as confirmation that the signal is actually being recorded (this is particularly useful when using a four headed DAT machine or a three -headed analogue 2T machine, since the off-tape signal can be monitored). This is achieved by selecting the 2T Return switch near the monitor level control.
Wordclock Input A rear panel input (on the back of the DO2 & DO8 card) is provided for connecting the M4 to an external master clock source. The wordclock input connector is a BNC-type terminated in 75 ohms. A FINAL WORD We hope you will enjoy your new M4 console, we're confident that once you start using it you'll wonder how you managed without one! For best results, switch your M4 console on 30 minutes before the start of your session to allow the tubes to fully warm up.
