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FRONT PANEL CONTROLS 

 
 
On the DAX front panel are eight control knobs. Included are left and right WOOFER and 
MIDRANGE/TWEETER attenuation, left and right WOOFER – MIDRANGE/TWEETER FINE 
BALANCE, and left and right RAKE ANGLE knobs. 

 

 

1) Woofer and Midrange/Tweeter Attenuation: 

 
The woofer may be attenuated in 1 dB steps from 0 to -6 dB by turning the WOOFER knob 
counter-clockwise. The numeric indication near the knob will indicate the corresponding level. The 
MIDRANGE/TWEETER knob operates in the same fashion. 
 

2) Fine Tuning

 

 
If smaller attenuation increments of 0.2 dB are desired, turn the Fine Tuning in the direction of the Woofer 
or Midrange/Tweeter symbol to further attenuate that frequency band in 0.2 dB steps. For example, you wish 
to attenuate the right woofer -2.2 dB. Simply turn the right (you will see a little R on the far right edge of the 
front panel) WOOFER attenuation knob two clicks to the left (counterclockwise) and then turn the right Fine 
Tuning knob one click to the left (counterclockwise). Note that the Fine Tuning adjusts either the Woofer or 
Midrange/Tweeter levels, not both at the same time. 
 

3) Rake Control Angle: 

 
The RAKE control angle knob adjusts the tonal balance above 1 kHz in a linear fashion. It is easy to 
visualize this as a hinging action at various angles. + 1 corresponds to a 1 dB boost referenced at 5 kHz, 
hinged at 1 kHz. There are +/- 4 steps, each step is equivalent to a +/- 0.5 dB step at 5 kHz. This feature 
allows the user to tone dawn bright recordings or liven up dead listening rooms and vice-versa. 
Experimentation is recommended. 
 

CARE AND CLEANING 

 

WARNING: BEFORE CLEANING, SHUT OFF ALL POWER. 

 
The DAX and its power supply have a high quality anodized finish. This finish is durable against most 
scratches and rub marks. Fingerprints and dirt are best removed by a glass cleaner or mild soap and water. 
 
 
 

Summary of Contents for DAX 3

Page 1: ...APOGEE ACOUSTICS INC DAX 3 Dedicated Active Crossover Owner s Manual...

Page 2: ...ing with single ended or fully balanced input output signal interconnects Input impedance adjustment controls fine tune the matching characteristics between DAX 3 and most available pre amplifiers Sel...

Page 3: ...the printed circuit board can be toggled to the left for Speaker A or to the right for Speaker B Refer to Table 1 for the Apogee speaker designation depending on the two speaker choices received NOTE...

Page 4: ...d to permit operation of the Apogee speakers with the DAX active crossover The wiring changes are simple and readily performed WARNING BEFORE MAKING ANY WIRING CHANGES DISCONNECT ALL POWER TO THE AUDI...

Page 5: ......

Page 6: ...URPLE WOOFER AMP MIDRANGE TWEETER AMP Binding Posts RED BLACK RED BLACK Standard Wiring L1 BLACK ORANGE 2 GREEN Passive X over Active Crossover BLUE WHITE ORANGE GREEN L5 GREY Woofer Wiring a Remove a...

Page 7: ...vas with serial numbers before 10360 resolder short ORANGE wire originating from MIDRANGE TWEETER RED AMPLIFIER BINDING POST from LUG 6 of the BUSSBAR to LUG 1 and 2 Refer to Diagram 2 f Finally cut t...

Page 8: ...lug or wire c Place the nameplates back in their original positions and secure with screws CALIPER SIGNATURE The Caliper Signature is not set up to be easily modified by the customer Therefore we reco...

Page 9: ...amplifiers but not right on top or next to them However the most obvious consideration in choosing a location is user accessibility The DAX should be kept away from stray magnetic fields which can be...

Page 10: ...R in the middle of the DAX back panel Before plugging the power cord into an A C outlet make sure the correct voltage setting is selected on the back of the power supply This is indicated on the botto...

Page 11: ...R on the far right edge of the front panel WOOFER attenuation knob two clicks to the left counterclockwise and then turn the right Fine Tuning knob one click to the left counterclockwise Note that th...

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