OPERATOR'S MANUAL Version 1 20090110 LTD. 2117 East 5th Street Superior, WI 54880 USA tel: 715-398-3627 fax: 715-398-3279 www.cranesong.
IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions 2. Keep these instructions 3. Heed all warnings 4. Follow all instructions 5. Do not use this apparatus near water 6. Clean only with dry cloth 7. Install in accordance with the manufacturer's instructions 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat 9.
THE BASICS The IBIS equalizer can do some very different things. First, each band has 24 frequencies. 12 switch positions and a “+ one step button” this button moves the frequencies up one whole musical step. The high and low bands also can be shelving by pushing the shelving button. The frequency chart showes how each of the bands over lap and how frequencies and musical notes relate. As an example, with the +1 step button pushed in, the frequency moves up two positions on the chart. 32.
659 1319 155.6 311 622 1245 147 294 587 1175 139 277 554 1109 2218 4435 8869 17740 131 262 523 1047 2093 4186 8372 16744 19912 9956 4978 2489 Band 1 + 1 step lowest frequency is 36.7 Hz Band 2 + 1 step lowest frequency is 155 Hz Band 3 + 1 step lowest frequency is 523 Hz Band 4 + 1 step lowest frequency is 1760 Hz 18794 9397 4699 2349 330 77.8 73.4 69.3 21096 10548 5274 2637 165 82.4 41.2 65.4 38.9 36.7 34.6 E 32.
BAND 1 EQ CURVES This graph showes band 1 the low frequency band, The peaking curve is at a bandwidth 1.5 octaves and is for reference. The shelving curves are with the shelf button pushed in.
BAND 4 EQ CURVES This graph showes band 4 the high frequency band, The peaking curve is at a bandwidth 1.5 octaves for reference. The shelving curves are with the shelf button pushed in.
BAND EQ CURVES PEAKING This graph showes a typical peaking eq curve. This was measured on band 3. Only one frequency is showen for clarity. There are several boost and cut levels at different bandwidths. These curves apply to all 4 bands for a total of 96 different frequencies.
LOW CUT EQ CURVES This graph showes a typical low cut curve. Three frequencies are showen for clarity. Each showing the 12 db pre octave slope and the 24 db per octave slope. Frequencies of 40 , 80, and 150 Hz are showen.
LOW CUT EQ CURVES This graph showes the range of the low cut curves. All frequencies are at the 24 db per octave slope.
IBIS INSERT CONNECTOR If you are going to use this, use it with caution. The inserts are a loop and must be normaled for the band to work correctly. If there is a phase inversion in the inserted device it is possible that the system will be an oscillator. This will not hurt Ibis, but your Speakers. IBIS INPUT boost / cut amp Insert IBIS OUTPUT Return Send filter There are 4 filter circuits in parallel in Ibis.
INTERFACING - SPECIFICATIONS Input: Floating, balanced. Maximum input is +25 dBm. The connectors are XLR. Output: Floating, balanced. Maximum output is +25 dBm. The connectors are XLR. Input and Output : Connections Pin 2 is Sig + , Pin 3 is Sig- , Pin 1 is GND Power: 100, 120, 230,240 volt; 50/60 Hz; 55 watts MDL .6A Fuse for 100V and 120V MDL .
