CROSSOVER SUGGESTIONS
After the speaker system has been placed, the crossover point needs to be set for maximum benefit. While the 18" driver in the CS-18 is fully capable of accurately reproducing frequencies above 400 Hz, setting the crossover point this high makes time alignment very difficult and the large 18" woofer will start to "beam". Beaming occurs when lower frequencies are emitted in an approximately omnidirectional pattern while higher frequencies are emitted more on-axis. For the CS-18, this occurs above the crossover point of 400 Hz. If the crossover point is set too high and the subwoofer is placed far from the mid/high packs, bass frequencies will sound like they are being produced in two different locations. Most listeners cannot locate the origin of frequencies below 150 Hz. Setting the crossover point too low (below 80 Hz) will not take full advantage of the subwoofer because it places too high of a demand on the mid/high packs. For these reasons, a crossover point of ranging between 80 and 200 Hz is recommended depending upon the placement of the speakers.
The output level of the subwoofer(s) should be matched by ear to the output level of the full range cabinets by adjusting the level control at the crossover (if it has one) or at the power amplifiers. Normally, the output of the full range cabinets is subjectively higher than that of the subwoofers so a balance can be achieved by turning down the mid/high frequency signal at or before the power amplifiers.
BI-AMP SYSTEM USING A FULL RANGE CABINET AND SUBWOOFER
| POWERED MIXER | | FULL | C-12 |
| | RANGE | or |
MAIN | MAIN | MON. | | MAIN | | MONITOR | INPUT | C-15 |
OUT | AMP IN | AMP IN | | AMP OUT | | AMP OUT | | |
| | | | | | | | FENDER |
| | | | | | | | TRIPOD STAND |
INPUT | | HIGH | LOW | | | | |
| OUT | | OUT | | | | |
| | - ∞ | -∞ | -∞ | - ∞ | - ∞ - ∞ | C-18 | |
PCN-2 | | | | | | | |
| | | | | | | |
ELECTRONIC | | | | | | | |
CROSSOVER | | | | | | | |
| | | | | | | 5 | |
