Mackie SR244 / SR324 Owner's Manual - Page 21

STEREO TRIM, FADER, SOLO, AUX All the controls on each of the stereo channel strips are stereo. The TRIM control is a dual-channel trim and the channel fader is dual-channel (stereo). The solo buses and each of the aux sends are wired to tap signal from both the right and left sides of the stereo channel audio. STEREO EQ SECTION The EQ on Channels 21-24 is stereo, too, working its magic on both sides of the signal at the same time. (That's 29-32 on the SR32•4.) The design of the EQ is slightly different from the mono channel strips as well, with two separate fixed-frequency equalizers replacing the sweepable equalizer in the MID EQ range. HI EQ The HI EQ section [14] is a 12kHz shelving equalizer, similiar to the mono channel strip HI EQ section. HI MID EQ +15 +10 The HI MID +5 EQ section 0 [15] is a peak- -5 ing/dipping -10 equalizer with -15 a fixed center 20Hz 100Hz 1kHz 10kHz 20kHz frequency of 3kHz, a bandwidth of 1 octave (Q = 1.4) and a range of ±15dB. A bit of added 3kHz will in- crease clarity or bite. If you have an input that sounds harsh or nasal, pull out a little at 3k and you can smooth the sound out. LOW MID EQ The LOW MID EQ section [16] is a peaking/dipping equalizer with a fixed center frequency of 800Hz and a range of ±15dB. Adding a little EQ at this frequency can put +15 +10 +5 0 -5 -10 -15 20Hz 100Hz 1kHz 10kHz 20kHz U EQ -15 +15 U -15 +15 U -15 +15 U HI 12k HI MID 3k LOW MID 800Hz -15 +15 LOW 80Hz warmth and fullness into vocals and instruments. Cutting can really help some sounds by reducing boxy and boomy tones. LOW EQ The LOW EQ section [17] is an 80Hz shelving equalizer, exactly the same as the mono channel strip LOW EQ section. LOW CUT (lack thereof) There are no Low Cut filters in the stereo channel strips. Layout and Function STEREO PAN (BALANCE) CONTROL In the stereo channel strips there is a stereo PAN control [18]. In effect, it functions as a balance control rather than a mono PAN pot. In a mono PAN pot, such as channels 1-20, a mono signal is actually sent to a dual level control. In the stereo channels of the SR24•4, the right signal is sent to the right part of the control and the left part of the signal to the left part of the control. With the stereo PAN set at the center detent, you'll get the same 4.5dB loss of level described earlier. OL L R -20 PAN 21 22 MUTE MUTE / SOLO dB 10 SOLO 5 U 1-2 5 3-4 10 20 L-R 30 40 50 60 OO 19