
MAGNITUDE (dB)
Polars Are Normalized To Zero On Axis
15watts @1 meter
1 watt @ 1 meter
Frequency (Hz)
APF-15TU(C)  Frequency Response
Frequency  | Lp  | Q  | Di  | Beamwidth  | |
(Hz)  | 
  | (Degrees)  | |||
  | 
  | 
  | 
  | ||
  | 
  | 
  | 
  | 
  | 
  | 
1000  | 94.73  | 3.37  | 5.27  | 
  | 160  | 
2000  | 91.37  | 7.30  | 8.63  | 
  | 95  | 
4000  | 89.23  | 11.95  | 10.77  | 
  | 90  | 
8000  | 83.54  | 44.29  | 16.46  | 
  | 25  | 
  | 
  | 
  | 
  | 
  | 
  | 
Fundamental
(dB)  | 
  | 
  | |
2nd Harmonic  | |||
MAGNITUDE  | 
  | ||
  | 
  | ||
  | 
  | 
  | 
3rd Harmonic
Frequency (Hz)
INSTALLATION
WIRING DIAGRAM
To conform with UL requirements, wires must be connected as shown in wiring diagram.
  | Speaker 1 | Speaker 2  | 
  | ||
From  | 
  | 
  | 
  | 
  | To Next  | 
Amplifier  | 
  | 
  | 
  | 
  | Speaker or  | 
  | 
  | 
  | 
  | 
  | End  | 
  | _  | 
  | _  | 
  | of Line  | 
  | +  | +  | Resistor  | ||
  | 
  | 
  | 
  | ||
  | 
  | 
  | 
  | 
  | 
  | 
CAUTION:
•DO NOT LOOP WIRES UNDER SCREW TERMINALS. BREAK WIRE RUN TO PROVIDE SUPERVISION OF CONNECTIONS
•MAXIMUM WIRE SIZE IS 
CONNECTION: Amplifier output line con- nection is made to the screw terminals which are designed with wire retainers for insured reliability. Input terminals are numbered (#1 and #2) to maintain system phasing. (#2 is the positive terminal). The wide and narrow slots adjacent to #1 and
#2 are used for cable strain relief.  | Selector Switch  | |
  | 
  | 
Switch  | Impedance  | Watts | *dB  | Watts  | *dB  | 
Position  | (Ohms)  | @ 25V  | 10 ft.  | @ 70.7V  | 10 ft.  | 
1  | 5,000  | –  | –  | 1  | 93  | 
2  | 2,500  | –  | –  | 2  | 96  | 
3  | 1,300  | .48  | 90  | .38  | 96  | 
4  | 666 | .94  | 90  | 7.5  | 99  | 
5  | 333 | 1.8  | 93  | 15  | 102 | 
6  | 89  | 7.5  | 99  | X**  | X**  | 
7  | 45  | 15  | 102  | X**  | X**  | 
* UL 3dB Increment Rating  | ** Do Not Use  | 
Atlas Sound products are designed and tested in our 
Specifications subject to change without notice
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 
© 2001 Atlas Sound LP  | Printed in U.S.A.  | 000501  |