User manual RANE SEQ 30S

[. . . ] You may use either the XLR or ¼" connectors for Inputs or Outputs. Connect only one INPUT type per channel. The XLR and ¼" TRS inputs do not sum. You may, however, use both types of OUTPUTS simultaneously if desired. WEAR PARTS: This product contains no wear parts. Manual-1 FRONT PANEL DESCRIPTION INPUT 0 -6 -12 12 6 25 + 12 · · · · 31. 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1. 25k 1. 6k 2k 2. 5k 3. 15k 4k 5k 6. 3k 8k 10k 12. 5k 16k 20k + 12 · · · · 6 0 6 0 SEQ 30S +4 OL BYPASS 6 12 6 12 STEREO EQUALIZER LEVEL POWER 1 2 3 4 25 + 12 31. 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1. 25k 1. 6k 2k 2. 5k 3. 15k 4k 5k 6. 3k 8k 10k 12. 5k 16k 20k + 12 9 6 3 0 9 6 3 0 SEQ 30L INPUT 0 -6 -12 12 6 3 6 9 3 6 9 12 STEREO EQUALIZER +4 OL BYPASS 12 LEVEL POWER 1 2 3 4 1 INPUT LEVEL control and indicators This controls the overall level. [. . . ] In agreement with IEC and AES/ANSI standards, XLR wiring convention is pin 2 Positive (hot), pin 3 Negative (cold), and pin 1 Signal ground (for unbalanced use). Pin 1 and the connector case or shell are tied to chassis ground. 2 LEFT & RIGHT OUTPUTS Use the balanced XLR or the unbalanced ¼" tip-sleeve jacks. It is permissible to simultaneously use both types of Outputs to drive two devices, such as an amplifier and a recorder. XLR wiring is the same as the Inputs. Manual-3 SEQ 30S & 30L CONNECTION Exactly where you install your SEQ 30 into a sound system significantly affects such things as noise, system headroom, compressor/limiter performance and other factors influencing overall sound quality. Both what and why you are equalizing determines where you install it. WHAT AND WHY Tone contouring is accomplished primarily by ear. Be careful though, not to boost too much bass. Be aware that the SEQ 30 is capable of boosting signals up to 12 dB (4 times as large!)--a level at which great care should be taken to prevent seismic disturbances. Optimal gain setting is indicated by the +4 dBu indicator lighting occasionally, while the OL indicator does not light. The SEQ 30 can be used to align crossovers and flatten speaker response. The best way to "see" what your sound system is doing, is to use a realtime analyzer, such as the Rane RA 30. A -octave realtime analyzer is an accurate means for setting a -octave equalizer properly. WHERE For tone contouring, the equalizer may be used at any point in the signal chain, such as insert loops in a mixer to equalize a single instrument, sweeten a tape recording, etc. When an equalizer is used for acoustical correction, the equalizer should be one of the last pieces of gear in front of the amplifiers and active crossover. Here are a few general guidelines to decide where to install the EQ in the system. Downstream of the Compressor Since system EQ is aimed at controlling acoustic problems, install it after any compressor, which is designed to operate on electrical signal. For one thing, the equalizer slider settings will change in each room location, which in turn affects the control voltage and threshold responses of the compressor, rendering it inconsistent. Secondly, large amounts of boost often cause tone differences by causing some frequencies to limit or compress before others. After any System Gain The best configuration is: mixer, compressor/limiter, equalizer, crossover, then power amplifier. Whenever headroom allows, try to take all the gain at the mixer, and run unity levels from then on. This also gives better noise performance through the system. [. . . ] Fatten the bass, sweeten the highs, brighten the mids. Since you are starting from a "tuned" system, your ear will not be fooled into thinking bass is too high when actually mids are too low, or that highs are too weak when really the mids are too strong. Fact: analyzers don't have good taste--people do. Analyzers consistently and accurately "tell it like it is, " but ultimately, personal judgment determines what sounds good or appropriate for the program material. [. . . ]