User manual ALESIS MULTIMIX 12R

[. . . ] MIXER / MICROPHONE PREAMPLIFIER REFERENCE MANUAL 2002 Important Safety Instructions Important Safety Instructions Important Safety Instructions (English) Safety symbols used in this product This symbol alerts the user that there are important operating and maintenance instructions in the literature accompanying this unit. This symbol warns the user of uninsulated voltage within the unit that can cause dangerous electric shocks. This symbol warns the user that output connectors contain voltages that can cause dangerous electrical shock. Please follow these precautions when using this product: 1. Do not spray any liquid cleaner onto the faceplate, as this may damage the front panel controls or cause a dangerous condition. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. [. . . ] Since the ADAT is a unity-gain device, it will not affect the levels going through the mixer. The [TRIM] control is the only level control for the ADAT inputs; the channel faders, EQ, and aux sends of the Multimix 12R are used for monitoring and will not affect multitrack recording levels. This method is recommended by many audiophiles and engineers, since there is a minimum of circuitry between the original source and the recorder. Hooking a Multimix 12R to an ADAT via the [INSERT] jacks is effectively the same as connecting studio-quality microphone preamps directly to the input of the tape deck. NOTE: To hear the microphone or line input signal through the mixer, the ADAT track must be in RECORD READY or INPUT mode. Obtain eight "stereo splitter" insert cables from your dealer. These cables feature a three-conductor TRS ("stereo") 1/4" phone plug at one end, and split out to two "mono" plugs at the other, as shown below. If you have an ADAT-XT, use 1/4" TRS to phono cables. Connections 2. Connect the stereo/TRS end to the INSERT jack of channel 1 of the Multimix 12R. Connect the mono plug from the tip connector to the input of the ADAT. NOTE: the ADAT's tracks are arranged from left to right on the back panel, and the mixer's channels are from right to left, so the wires will have to cross over. Connect the mono plug from the ring connector to the output of the ADAT. If you're not sure which mono plug is from the tip and which is from the ring, check to see if the cable box has that information. If not, simply try it one way and play a prerecorded tape from the ADAT. If you can't hear output from the mixer with the faders and master up, swap the input and output plugs the other way. Plug in channels 2-8 of the mixer to tracks 2-8 of the ADAT in the same way. INPUT INPUT OUTPUT OUTPUT 1 LOCATE/PLAY LRC REMOTE 2 PUNCH IN/OUT 3 4 DIGITAL 5 6 7 8 SYNC IN OUT IN OUT Using two Multimix 12Rs for more flexibility: The in-line method may be used for recording one source to a track. But if you want to record a mix of microphones or other sources onto a pair of tracks, two Multimix 12Rs can do the job more quietly and in a smaller space than expensive dedicated recording consoles. One 12R is the "source" mixer which feeds the ADAT's inputs, and the other is the "monitor/mixdown" mixer which receives the ADAT's outputs. Plug the -10 dBV MAIN OUT jacks of the "source" 12R to track inputs 1 and 2 of the ADAT. Multimix 12R Reference Manual 21 Connections · Because the ADAT has normalled inputs, the stereo output of the source mixer may be recorded on other tracks without repatching. The left output of the mixer will appear at the inputs of tracks 1, 3, 5 & 7; the right output will appear at track 2, 4, 6 & 8. On the ADAT-XT, press and hold [ANALOG INPUT] and the REC READY keys for track 1 or 2 to activate this "built-in patch bay" feature. 2. Plug track outputs 1-8 of the ADAT to LINE IN 1-8 of the "monitor/mixdown" 12R. [. . . ] All noise measurements taken with trim at minimum and faders at unity gain with 22 Hz to 22 kHz bandwidth unless otherwise specified. (+4 dBu into a line input with faders at unity and the meter reading "0" will yield +4 dBu into a balanced load or -2 dBu into an unbalanced load. ) Frequency Response 10 Hz ­ 65 kHz +0/-1 dB -3dB Point: (any input to any output at nominal operating levels) 125 kHz Connectors MIC IN jacks: LINE IN jacks: Female XLR (Pin 1 ground, Pin 2 +, Pin 3 -) Female 1/4" 3-conductor phone (Tip = +, ring = -, sleeve = ground) Female 1/4" 3-conductor phone (Tip = send, ring = return, sleeve = ground) Inserting plug to first "click" allows direct output without breaking normal signal flow Female 1/4" 3-conductor x 2 INSERT jacks: STEREO LINE IN and STEREO AUX RETURN jacks: MAIN OUT BALANCED, MONITOR OUT, and AUX SEND jacks: Female 1/4" 3-conductor phone (Tip = +, ring = -, sleeve = ground) Female phono ("RCA") jacks Female phono ("RCA") jacks MAIN OUT -10 dBV jacks: TAPE IN jacks: Multimix 12R Reference Manual 45 Specifications Levels MIC IN -60 dBu to -10 dBu nominal, maximum level +12 dBu LINE IN -40 dBu to +10 dBu nominal, maximum level +32 dBu (balanced) STEREO LINE IN -15 dBu to +15 dBu nominal, maximum input level +22 dBu MAXIMUM GAIN +76 dB, MIC IN to MAIN OUT, balanced +80 dB, MIC IN to MONITOR OUT, balanced or unbalanced CHANNEL PEAK LED ON: 6 dB below channel clipping METER: Peak type -24 dB to PK (+18 dB over reference at MAIN OUT, 6 dB before output clipping) MAIN OUT LEVEL (1/4" phone jacks) (when meter is at 0 VU) +4 dBu (1. 24 volts) into a balanced load -2 dBu into an unbalanced load MAIN OUT LEVEL (phono jacks) -10 dBV (. 316 volts) unbalanced MAXIMUM OUTPUT LEVEL +22 dBu unbalanced, +28 dBu balanced (6 dB above "PK" segment of main meter) MONITOR OUT LEVEL Same as above, but variable following MONITOR/PHONES control INSERT/DIRECT OUT (tip) Unity gain INSERT IN (ring) Maximum level +22 dBu HEADROOM: 23. 5 dB above nominal output Impedance MIC IN LINE IN OUTPUTS (MAIN, AUX and MON): 50-150 nominal source impedance (presents 4 k balanced load impedance) 600 -2 k nominal (>20 k load impedance) 150 unbalanced, 300 balanced 1. 1 k at -10dBV MAIN OUTS Specifications Noise performance (typical) Measured at MAIN OUT +4 dBu jacks, unbalanced load, 22 Hz to 22 kHz, all channels panned to center. MIC IN to INSERT OUT: -128. 5 dBu Equivalent Input Noise at maximum gain Residual output noise (MASTER fader at nominal, channel faders at minimum): <-88 dBu 12 inputs, faders and trims at unity gain, inputs terminated 150: <-85 dBu unbalanced (+22 dB max unbalanced out = 107 dB dynamic range) Distortion (THD+N) Measured with a 0 dBu signal coming into a MIC IN jack with trim set for a +15 dBu output from the insert jack. At INSERT jack: Better than 0. 0010% At MAIN OUT (+21 dBu balanced output level) Better than 0. 0015% Power U. S. A. [. . . ]