Rane AC 22 Operator's Manual

Other manuals for AC 22: Datasheet
Manual is about: Rane ACTIVE CROSSOVER

Summary of AC 22

  • Page 1

    Manual-1 ac 22 active crossover operators manual ac 22 connection balanced/unbalanced inputs the ¼" input jacks on the ac 22 are trs (tip-ring- sleeve). We recommend connecting the ac 22 with a bal- anced cable from the balanced output of a mixer or equalizer. If a balanced output is not available, ...

  • Page 2

    Manual-2 front panel: stereo 2-way configuration observe the labels above the controls for stereo operation. Power switch: self-evident. Power indicator: when this yellow led is lit the unit is ready to operate. Ch 1 master level control: sets the overall level of channel 1 without altering the rela...

  • Page 3

    Manual-3 rear panel: stereo 2-way installation channel 1 input: this ¼" input accepts either balanced trs (tip-ring-sleeve) or unbalanced ts (tip-sleeve) plugs. Use this input only if you are running two separate channels. For true stereo operation, connect this input to the left channel output of t...

  • Page 4

    Manual-4 front panel: mono 3-way configuration observe the labels below the controls for mono operation. Power switch: self-evident. Power indicator: when this yellow led is lit, the unit is ready to operate. Ch 1 master level control: sets the overall level without altering the relative settings of...

  • Page 5

    Manual-5 rear panel: mono 3-way installation caution: mono sub switch must be in 2-channel or m3w mode! Mono (channel 1) input: this ¼" input accepts either balanced trs (tip-ring-sleeve) or unbalanced ts (tip-sleeve) plugs. Plug the output of the mixer, equalizer or other signal source to this inpu...

  • Page 6

    Manual-6 operating instructions selecting crossover frequencies most speaker manufacturers supply low and/or high frequency cut-off points for each driver, especially if these are supplied in a system. These cut-off frequencies are based on each driver’s performance at and beyond this point, with a ...

  • Page 7

    Manual-7 time delay adjustment using realtime analyzer & pink noise this method outlines the use of a realtime analyzer, pink noise generator and flat response microphone to set crossover time delay. Some references will be made to the rane model ra 27 analyzer for those with the intelligence and go...

  • Page 8

    Manual-8 iii. If you have turned the mid delay control all the way up and still do not have a +3 db (red) reading, you will have to physically move the high driver farther forward until the display shows +3 db (red). The amount of displacement correction available from the delay depends on the actua...

  • Page 9

    Manual-9 4. Now press in the mid mute switch on the crossover so that the tone is removed from the mid driver. Without re-adjusting either the meter or the crossover input or mid frequency level controls, turn up the high level control until the tone coming from only the high driver reads 0 db on th...

  • Page 10

    Manual-10 in order to phase-align two drivers you must observe only the crossover frequency, which is common to both drivers. Pink noise can be used if all other frequencies are disre- garded, since room acoustics and imperfect driver response will cause erroneous alignment attempts. Using pink nois...

  • Page 11

    Manual-11 setting the output level controls choosing the crossover frequencies was the easy part. Now it gets real fun. The idea is to set the output level controls on the crossover so that the entire speaker system has a uniform, flat response. Unfortunately, the room in which the speakers are plac...

  • Page 12

    Manual-12 8. Repeat this process for each frequency section of the crossover, ending with the highest frequency. Note: it is possible that you may turn one of the frequency section output level controls all the way up and still not have enough volume for a 0db reading (as determined by previous sect...

  • Page 13

    Manual-13 time delay transplant modification we have added modification jumpers to the ac 22. These jumpers permit the transplanting of the delay circuits from one output to another. As the units are shipped, the delay circuit is not installed on the high frequency outputs. When the ac 22 was first ...