Mackie SR244 / SR324 Owner's Manual - Page 35

For even more L L convenience, there are two more RCA jacks labeled R R TAPE IN. Connect your tape playback TAPE IN TAPE OUT to the TAPE IN jacks and you'll be able to quickly monitor your tape recorder with the TAPE RETURN switches on the front panel. The TAPE IN jacks are unbalanced RCA inputs with a nominal level of 0dBu. Caution: Assigning the TAPE RETURN MAIN MIX could cause a several-megaton feedback loop. Stick to control room/ phones monitoring while in record mode on your tape deck. You'll get maximum smoke with 60-ohm headphones. (See tinnitus in the Glossary.) TALKBACK MIC Remember the talkback function we talked about before? Here is where you plug in the microphone. This is a balanced mic input [18] using a standard XLR-type mic connector which will accept a wide range of microphone levels and impedances. NOTE: There is no phantom power avail- able at the TALK BACK MIC input. ADDITIONAL NOTE: Engaging talkback to AUX 1/2 or MAIN MIX will attenuate control room out by 20dB. Layout and Function CONTROL ROOM OUT POWER The CONTROL ROOM OUT L and R jacks [15] carry the monitoring signal controlled by the PHONES/C-R LEVEL knob on the front panel, and should be connected to the inputs of your control room monitor power amplifier. CONTROL ROOM OUT L and R are impedance balanced 1/4" TRS (tip-ringsleeve) phone jacks with ground wired to the sleeve, signal "hot" (or "high" or "+") to the tip and signal "cold" (or "low" or "-") wired to the ring. You can connect either balanced or unbalanced inputs to these outputs. Nominal level is 0dBu. PHONES 1 & 2 The PHONES jacks [17] carry the same signals as the CONTROL ROOM OUT L and R jacks, with extra amplification to drive stereo headphones. Careful; they're loud! The connections are 1/4" TRS (tip-ring- sleeve) stereo phone jacks wired for standard stereo phones with common (ground) con- nected to the sleeve, left channel to the tip and right channel wired to the ring. PHONES 1 and PHONES 2 are parallel and provide the same 120VAC 50/60 HZ 60W 1A/250V SLO BLO FUSE INSIDE signals. Main power is provided through the IEC connector at the lower left of the rear panel [19]. An IEC power cord of relatively gener- ous length is provided with the SR24•4. Replacement cords are available anywhere (try making that statement when you only ship a lame wall wart with a mixer...). A mains power fuse is located in a tiny compartment in the power cord connector housing. Replace only with the correct fuse. It's a very good idea to carry spares. Just to the right of the power cord connec- tor is the main power switch. Turn this switch ON for normal operation and OFF for silent (ultra-ultra- low noise) mode. PHONES 1 PHONES 2 TALK BACK MIC POWER ON PHANTOM ON CAUTION: TO REDUCE THE RISK OF FIRE, REPLACE WITH THE SAME TYPE FUSE AND RATING OFF OFF 33