642VLZ4 16-Channel 4-Bus Compact Mixer OWNER’S MANUAL STEREO PLUG WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR INSERT ONLY INTO THE "FIRST CLICK" FOR USE AS AN EFFECTS LOOP (TIP= SEND, RING= RETURN) DIRECT OUT WITH SIGNAL INTERRUPTION TO MASTER DIRECT OUT WITH NO SIGNAL INTERRUPTION TO MASTER 100VAC 120VAC REPLACE WITH THE SAME TYPE FUSE AND RATING.
1642VLZ4 Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
IMPORTANT SAFETY INSTRUCTIONS......................... 2 CONTENTS............................................................... 3 FEATURES / INTRODUCTION.................................... 4 GETTING STARTED.................................................... 5 HOOKUP DIAGRAMS............................................... 6 PATCHBAY DESCRIPTION EZ INTERFACE........................................... 8 MIC AND LINE INPUT FLEXIBILITY.............. 8 1. MIC INS................................................
1642VLZ4 Features • Introduction 16-channel mixer featuring our signature high-headroom, low-noise design • 10 boutique-quality Onyx mic preamps • Ultra-wide 60 dB gain range • 128.5 dB dynamic range • +22 dBu line input handling • Extended frequency response • Distortion under 0.0007% (20 Hz - 50 kHz) • Improved RF rejection, perfect for broadcast applications • Phantom power for condenser mics • 16 high-headroom line inputs with +4/–10 operation control • 3-band EQ (80 Hz, 2.
We realize that you must be really keen to try out the mixer. Please read the safety instructions on page 2, then have a look through some of the features and details in this manual. Setup Set the levels It’s not even necessary to hear what you’re doing to set optimal levels. But if you’d like to: Plug headphones into the phones output jack, then turn up the CR/phones knob just a little. 1. Turn on the mixer by pressing the top edge of the power switch. 2. For one channel, press the solo switch in.
1642VLZ4 Hookup Diagrams Vocal mics Synth Drum microphones Stereo Tape Deck Stereo Guitar Effects Stereo Guitar Effects Headphones Laptop Stereo Compressor Headphone amp Stereo Compressor and Stereo EQ Multi-track Digital Recorder Digital Reverb MR8mk3 studio monitors Digital Delay The rhythm and lead guitars play through stereo effects processors plugged into the line inputs of channels 1 and 2.
Synth Drum microphones Laptop Stereo Guitar Effects Headphones Owner’s Manual Vocal mics Stereo Guitar Effects Stereo Compressor Digital Reverb DLM8 loudspeakers Digital Delay DLM8 Stage Monitors Stereo Compressor and Stereo EQ DLM12S subwoofers Stereo EQ The rhythm and lead guitars play through stereo effects processors plugged into the line inputs of channels 1 and 2. Microphones are connected to the mic inputs of channels 3-10 with a vocal compressor connected to the channel 3-4 insert jacks.
1642VLZ4 Patchbay Description 1 2 4 3 At the risk of stating the obvious, this is where you plug everything in: microphones, line-level instruments and effects, and the ultimate destination for your sound: PA system, DAW, etc. Many of the features described in this section are on top of the mixer, but some are on the rear panel. See Appendix B for further details and drawings of the connectors you can use with the 1642VLZ4.
The GAIN controls for stereo channels 9-10 and 11-12 are only used to adjust the Mic inputs. The line inputs are set to unity gain. Do not plug instrument outputs into the mic input jacks with phantom power on unless you know for certain it is safe to do so. The GAIN controls for channels 13-14 and 15-16 only adjust the line-level inputs, as they have no Mic inputs. 2.
1642VLZ4 6 5 9 7 5. Direct Outs Double Busing Found only on channels 1–8, these balanced 1/4" jacks deliver the signal from the very end of the channel path; post-gain [3], post-EQ [32], post-low cut [34], post-fader [25], and post-mute [30]. Use these for recording, making the 1642VLZ4 perfect for an 8-track studio.
6. Aux Send Outs These 1/4" jacks usually patch to the inputs of a parallel effects devices or to the inputs of stage monitor amps. To learn how signals are routed to these outputs, see the Aux discussion on page 21. Effects: Serial Or Parallel? You’ve heard us carelessly toss around the terms “serial” and “parallel.” Here’s what we mean by them: “Serial” means that the entire signal leaves the mixer [insert send], is routed through the effects device, and returns to the mixer [insert return].
1642VLZ4 17 12 16 18 19 14 15 14 13 12. Tape In 14. Main Outs These unbalanced RCA jacks are designed to work with semipro as well as pro recorders. Connect your 2-track tape recorder’s outputs here, using standard hi-fi RCA cables. To learn how signals are routed from these inputs, see tape in (level) [40] on page 19. Two sets of jacks are provided for the main outputs: 1/4" TRS jacks and XLR jacks.
If Mr. Mono's main mono mix is maxed, just reach for this knob and turn it down a bit. Just the thing for sending mono signals to mic inputs like camcorders, telephone interface boxes, even answering machines. With the pot all the way up (fully clockwise), you’ll have 6 dB of extra gain, and unity gain is at the 12 o'clock position. 17.
1642VLZ4 Channel Strip Description There are eight mono, and four stereo channel strips. Many of the functions are identical for the mono and stereo channels. We’ll start at the bottom and work our way up, pointing out the differences as we go along. “U” Like Unity Gain VLZ4 mixers have a “U” symbol on almost every level control. This “U” stands for “unity gain,” meaning no change in signal level.
In a nutshell, soloed channels are sent to the source [42] mix, that ultimately feeds your control room, headphones and meter display. Whenever solo is engaged, all source selections (main mix, 1–2, 3–4, and tape) are defeated, to allow the soloed channel to do just that — solo! 28. –20 (Solo) LED An LED that does two completely different things! This saves space, but requires some explanation.
42VLZ4 Constant Loudness ! ! ! The 1642VLZ4’s pan controls employ a design called “Constant Loudness.” It has nothing to do with living next to a freeway. As you turn the pan knob from left to right (thereby causing the sound to move from the left to the center to the right), the sound will appear to remain at the same volume (or loudness). If you have a channel panned hard left (or right) and reading 0 dB, it must dip down about 4 dB on the left (or right) when panned center.
The low cut switch (not present on channels 13-16), often referred to as a high pass filter, cuts bass frequencies below 75 Hz at a rate of 18 dB per octave. This ain’t no thrown-in dime-store filter — an 18 dB per octave curve requires an elaborate circuit. Nothing but the best for you. We recommend that you use this on every sound source except kick drum, bass guitar, or bassy synth patches.
1642VLZ4 Output Section Description The main mix signals are off with the fader fully down, the “U” marking is unity gain, and fully up provides 10 dB additional gain. This additional gain will typically never be needed, but once again, it’s nice to know it’s there. The fader itself is a stereo version of the channel and subgroup faders — same supersmooth custom taper, same dead silence when turned fully down. This is the fader to pull down at the end of the song when you want “The Great Fade-Out.” 38.
42. Source Typically, the engineer sends the main mix to a live audience or to a mixdown deck (if recording). But what if the engineer needs to hear something other than the main mix? With the 1642VLZ4, the engineer has several choices of what to listen to. 40 43 41 42 Owner’s Manual WARNING: Engaging tape to main mix can create a feedback path between tape input [12] and tape output [11].
1642VLZ4 44. Mode (AFL/PFL) 46. Solo (Level) The 1642VLZ4’s solo system comes in two flavors: AFL (sometimes called SIP, or solo-in-place) and PFL (sometimes called PFL, or pre-fader-listen). This knob controls the level of the signals coming from the solo system. After the solo level is determined, the solo signals will proceed to take over the control room, headphones, and meter display.
49 51 49 50 Please remember: Audio meter displays are just tools to help assure you that your levels are “in the ballpark.” You don’t have to stare at them (unless you want to). If you find that staring at the meters sends you into a hypnotic trance, please do not be alarmed. Just cut my lawn and polish my car every Tuesday. 51 Owner’s Manual Thanks to the 1642VLZ4’s wide dynamic range, you can get a good mix with peaks flashing anywhere between –20 and +10 dB on the meter display.
1642VLZ4 50. Aux Sends Solo and LED 53. Main Mix To Subs (Stereo Return 3) Once again, in live sound situations aux send 1 and 2 are likely to feed your stage monitors. You’ll want to check the mix you’re sending them, and that’s what these two buttons are for. (Aux 3 and 4 have no such switch.) Beside each switch is a green LED that, just like the channel’s –20 LED, helps you find the rogue solo switch.
51 50 52 53 54 55 56 51 50 This switch operates just like the channel solo [27] switches — engaging it sends signals to the control room, headphones, and meter display, and interrupts whatever happened to be there before you soloed. It follows the mode [44] switch setting as well. The only difference is that when you engage this returns solo switch, it sends all four stereo returns signals to the solo circuit. Assume you want to solo the snare drum.
1642VLZ4 Appendix A: Service Information Warranty Service Repair If you think your 1642VLZ4 has a problem, please check out the following troubleshooting tips and do your best to confirm the problem. Visit the Support section of our website (www.720trees.com) where you will find lots of useful information such as FAQs and other documentation. You may find the answer to the problem without having to send your mixer away. For warranty service, refer to the warranty information on page 31.
The male XLR connectors provide a balanced linelevel signal that represents the end of the mixer, where the fully mixed stereo signal enters the real world. Connect these to the left and right line-level inputs of powered speakers or to the left and right line-level inputs of an amplifier (with speakers already attached). Be sure the cables are wired per AES (Audio Engineering Society) standards: accept 1-plug-type stereo microphones.
1642VLZ4 Unbalanced RCA Connector TRS Send/Receive Insert Jacks RCA-type plugs (also known as phono plugs) and jacks are often used in home stereo and video equipment and in many other applications. RCA plugs are unbalanced. Connect the signal to the center post and the ground (earth) or shield to the surrounding “basket.” Be sure the cables are wired per AES (Audio Engineering Society) standards: Single-jack inserts are three-conductor, TRS-type 1⁄4" phone.
MONO PLUG Channel Insert jack Direct out with no signal interruption to master. Insert only to first click. MONO PLUG Channel Insert jack Direct out with signal interruption to master. Insert all the way in to the second click. STEREO PLUG Channel Insert jack For use as an effects loop. (Tip = Send TO effect, Ring = Return FROM effect).
1642VLZ4 Appendix C: Technical Information Specifications 4 Band EQ (channels 9 – 16) High Shelving ±15 dB @ 12 kHz Main Mix Noise Hi Mid Peaking ±15 dB @ 2.5 kHz Low Mid Peaking ±15 dB @ 400 Hz (20 Hz–20 kHz bandwidth, 1/4" Main out, channel gains @ unity gain, channel EQs flat, all channels assigned to Main Mix, odd channels panned left, even channels panned right.) Main Mix fader unity, channel faders down: –86.
1 3 2 MIC TRIM MIC IN (Chs 9/10 & 11/12 only) LOW CUT 75Hz HPF 3 DIRECT OUT (CH'S 1-8 ONLY) 1 STEREO INPUT CHANNEL (1 OF 4) LINE IN R LINE IN L MONO INPUT CHANNEL (1 OF 8) LINE IN MIC IN 2 PHANTOM POWER (GLOBAL SWITCH) TRIM AUX RETURN 4 AUX RETURN 3 AUX RETURN 2 AUX RETURN 1 R L R L R L R L STEREO TRIM (Chs 13/14 & 15/16 only) MID LO MID 3K MID 12K HI 12K HI AUX 4 AUX 3 AUX 2 AUX 1 4-BAND STEREO EQ 80 800 3K MID OL (FLICKER) MUTE (GLOW) 80 800 LO PRE –20 (FL
Notes: Date: Session: 1642VLZ4 Track Sheet 1642VLZ4
Please keep your sales receipt in a safe place. This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”) and is applicable to products purchased in the United States or Canada through a LOUD-authorized reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of the product (hereinafter, “Customer,” “you” or “your”). For products purchased outside the U.S. or Canada, please visit www.720trees.
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