Mackie LM3204_om 电路图.pdf

LM-3204 OWNERS MANUAL 10 22 +20OO U 1 LEVEL +20OO U 2 +20OO U 3 LEVEL +20OO U 4 STEREO AUX RETURNS AUX RETURN TO CONTROL ROOM ONLY SOURCE ALT 3-4 40 30 20 10 7 4 2 0 2 4 7 + CLIP PHONES OO SOLO +20OO U TAPE MONITOR LEVEL POWERLM-3204 STEREO LINE MIXER ? ? ? ? ? dB 20 15 5 10 OO 5 10 30 40 U dB 20 15 5 10 OO 5 10 30 40 U ? ? ? ? ? ? ? ? ? ? LEFTRIGHTCONTROL R M U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 1 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 2 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 3 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 4 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 5 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 6 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 7 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 8 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 9 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 10 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 11 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 12 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 13 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 14 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 15 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 16 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8 CHANNEL 9 CHANNEL 10 CHANNEL 11 CHANNEL 12 CHANNEL 13 CHANNEL 14 CHANNEL 15 CHANNEL 16 CHANNEL MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 GAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAINGAIN RadioFans.CN 收音机爱 好者资料库 2 v1.110/94 CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR LUSAGER. CONFIER LENTRETIEN AU PERSONNEL QUALIFIE. AVIS: POUR EVITER LES RISQUES DINCENDIE OU DELECTROCUTION, NEXPOSEZ PAS CET ARTICLE A LA PLUIE OU A LHUMIDITE The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole clair avec point de flche lintrieur dun triangle quilatral est utilis pour alerter lutilisateur de la prsence lintrieur du coffret de voltage dangereux non isol dampleur suffisante pour constituer un risque dlctrocution. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point dexclamation lintrieur dun triangle quilatral est employ pour alerter les utilisateurs de la prsence dinstructions importantes pour le fonctionnement et lentretien (service) dans le livret dinstruction accompagnant lappareil. SAFETY INSTRUCTIONS 1. Read Instructions Read all the safety and operation instructions before operating the LM-3204 Console. 2. Retain Instructions Keep the safety and operating instructions for future reference. 3. Heed Warnings Follow all warnings on the LM-3204 Console and in these operating instructions. 4. Follow Instructions Follow all operating and other instructions. 5. Water and Moisture Do not use the LM-3204 Console near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, swamp or salivating St. Bernard dog, etc. 6. Heat Locate the LM-3204 Console away from heat sources such as radiators, compost pits or other devices that produce heat. 7. Power Sources Connect the LM-3204 Console only to a power supply of the type described in these operation instructions or as marked on the LM-3204 Console. 8. Power Cord Protection Route power supply cords so that they are not likely to be walked upon or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit the LM-3204 Console. 9. Object and Liquid Entry Do not drop objects or spill liquids into the inside of the LM-3204 Console. 10. Damage Requiring Service The LM-3204 Console should be serviced only by qualified service personnel when: A. LM-3204 Console power-supply cord or the plug has been damaged; or B. Objects have fallen, or liquid has spilled into the LM- 3204 Console; or C. The LM-3204 Console has been exposed to rain; or D. The LM-3204 Console does not appear to operate or exhibits a marked change in performance; or E. The LM-3204 Console has been dropped, or its chassis damaged. 11. Servicing Do not attempt to service the LM-3204 Console beyond those means described in this operating manual. All other servicing should be referred to the Mackie Tech SupportDepartment. 13. To prevent electric shock, do not use the LM-3204 Console polarized plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure. Pour prevenir les chocs lectriques ne pas utiliser cette fiche polarise avec un prolongateur, un prise de courant ou une autre sortie de courant, sauf si les lames peuvent tre insres fond sans laisser aucune pariie dcouvert. 14. Grounding or Polarization Do not defeat the grounding or polarization of the LM-3204 Console. This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications. ATTENTION Le prsent appareil numrique nmet pas de bruits radiolectriques dpassant las limites applicables aux appareils numriques de class A/de class B (selon le cas) prescrites dans le rglement sur le brouillage radiolectrique dict par les ministere des communications du Canada. WARNING To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. 1994, Mackie Designs, All Rights Reserved. Printed in the USA. RadioFans.CN 收音机爱 好者资料库 3 PLEASE! SAVE THE SHIPPING BOX! Top Ten Reasons for saving your shipping box: 10. Its here. 9. Its yours. 8. Its paid for. 7. Its strong and sturdy. 6. It fits your mixer perfectly. 5. You will need it if you ever ship your mixer. 4. We may have to sell you another one if you need to ship your mixer and you dont have it. 3. It will impress your friends who have no lives when they see it in your basement. 2. Its the ecologically sound thing to do. 1. Its the Mackie sound thing to do. Top Ten Reasons for not saving your shipping box: 10. Your cat has already used it. 9. You stole the mixer out of a Karaoke bar. 8. Your Mackie mixer will never break. 7. You will never move again. 6. You wrote a song on it and are considering framing it. 5. You have cut off the top and are using it as an equipment rack. 4. You really hate planning ahead because it never works out anyway. 3. It fits some other manufacturers product, which is broken, perfectly. 2. You have kept all the boxes of all the other equipment you have ever bought and you have never used one of them ever. 1. You are afraid of corrugated products. LAYOUT AND FUNCTION APPENDICES GENERAL INFO PANEL LAYOUT AND FUNCTION GENERAL INFORMATION USING THE LM-3204 CONNECTIONS, OPTIONS, SPECS, AND SERVICE TABLE OF CONTENTS SECTION 1: Introduction. 4 Sensitivity Adjustments. 5 SECTION 2: Panel Layout its just a porch light to show you somebodys home. We designed it to be ultra-responsive, so, with a little practice, you can probably tell whats on the channel (or at least the difference between the kick drum channel and a keyboard channel). However, its not the way to determine levels. There is a much more accurate way to measure your in- put strip levels: see the section on Setting Levels in Solo further down the pike here. Note: The 20 LED shows signal activity on the right side of each channel. If you had a stereo source (two cords, two plugs) or a mono source (one plug into the left MONO jack), the 20 LED will reflect that signal. However, if you have a stereo source with no signal happening on the right side, the 20 LED will be as unre- sponsive as a hybernating hippo on Sominex. OL LED The red LED is marked OL, and that stands for OverLoad. The channel strip OverLoad cir- cuits constantly check at two critical points in the input module: after the line inputs first gain amplifier and after the EQ and gain circuits. If either circuit is driven too hard (into overload), U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 16 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR 16 CHANNEL MUTE ALT 3-4 GAIN GAIN 10 22 +20OO U 1 LEVEL +20OO U 2 +20OO U 3 LEVEL +20OO U 4 STEREO AUX RETURNS AUX RETURN TO CONTROL ROOM ONLY SOURCE ALT 3-4 40 30 20 10 7 4 2 0 2 4 7 + CLIP PHONES OO SOLO +20OO U TAPE MONITOR LEVEL POWERLM-3204 STEREO LINE MIXER ? ? ? ? ? ? ? ? dB 20 15 5 10 OO 5 10 30 40 U dB 20 15 5 10 OO 5 10 30 40 U ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LEFTRIGHTCONTROL R M U +30dB ALANCE +15 U +12 U +15O U 15+15 U +15 U 10 SHIFT -20 OL 4 3 12k HI 80 LO 2.5k MID EQ LO UX R U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 11 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 12 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 13 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 14 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 15 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 16 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR 10 ANNEL 11 CHANNEL 12 CHANNEL 13 CHANNEL 14 CHANNEL 15 CHANNEL 16 CHANNEL TE 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 MUTE ALT 3-4 GAINGAINGAINGAINGAINGAINGAIN 8 U +30dBOO BALANCE L 15+15 U 12+12 U 2 +15OO U 15+15 U 1 +15OO U 16 SHIFT -20 OL 4 3 12k STEREO MONO HI 80 LO 2.5k MID EQ SOLO AUX LR 16 CHANNEL MUTE ALT 3-4 GAIN GAIN will also light that pulsating flambeau, that im- pudent alarm, that ruby pharos guarding the Mackie shore, the Rude Solo Light. MUTE/ALT 34 Next up is the Mute switch, which lives up to its name by muting its channel strip. When the Mute switch is depressed, the signal in that in- put module is removed from the main Left/Right buses and from any selected Auxiliary buses. Even though the channel is muted, there can still be audio within the input module. The 20 and OL lights will light, signal will still be available at the Insert jack (channels 14), and the channel Solo function will still work. In regard to the main and auxiliary outputs, though, the channel is effectively turned off. But there is a twist. IMPORTANT: Any and all muted channels are routed to an additional pair of stereo out- puts, called the Alt 34 outputs. If you have nothing connected to Alt 34 outputs, the Mute switch is simply a Mute switch. If you use Alt 34, then the Mute switch acts like an assignment button, switching the signal be- tween two sets of stereo output buses: the Main LR and the Alt 34 buses. This feature is fraught with potential. What appeared at first as a two-bus mixer now is revealed to be, for many purposes, a four-bus mixer. Yow! BALANCE What looks like a pan pot, acts like a pan pot but is not a pan pot? Its a Balance control! With a ste- reo input module, you are no longer dealing with a mono signal to pan from left to right. Instead, you have a stereo signal already spread across the soundstage, and you may have to only tweak the balance between the two channels a bit. Thats what the Balance control on the LM-3204 does. Its identical to the balance control on your Aunt Agathas Unrealistic hi-fi receiver. There is a detent at the top, where the balance is even. As you shift the control from one side to the other, the stereo balance changes, with the extremes being left channel only or right channel only. Note: It is possible to use a channel strip on the LM-3204 as a mono input by plugging a cord only into the Left (MONO) input. In this case, the mono signal is applied equally to both of the stereo signal paths. In this mode, the Balance control acts just like a pan pot, automatically! What a world we live in. the red OL light will flash. This is to be avoided. Overloading a mixer cir- cuit forces the audio signal to clip and seriously distort the sound. When the OL light flashes, it means something is too loud. It could be the level of the unit connected to the LM-3204 input jacks or a device you plugged into the Insert Jack; maybe you have the Gain control turned too high or an extreme amount of EQ (which lifts the gain in certain frequency ranges). You need to find out what is too loud and turn it down until the OL LED no longer lights. Note: When a channel strip is soloed, both the channel LEDs light steadily to indicate that modul