Sx80PI Two-Way Speaker System With Transformer
Sx80PI T
w
o
-W
ay Speaker System W
ith T
ransformer
9
Specifications
Versions available:
Sx80PI - two-way, full-range
speaker system (175 watts)
Sx80PIX - two-way, full-range
speaker system with a 2-60 watt
selectable transformer.
Typical Axial Frequency Response,
Swept Sine Wave, 4 volts at 3.05
meters (10 feet), (half-space, normal-
ized for 1 watt at 1 meter; see Figure 1):
65-20,000 Hz (open port)
75-20,000 Hz (closed port)
Low-Frequency 3-dB-Down Point:
65 Hz (open port)
75 Hz (closed port)
Usable Low-Frequency Limit
(10-dB-down point):
51 Hz (open and closed port)
Half Space Reference Efficiency:
1.2 %
Long-Term Average Power-Handling
Capacity per EIA Standard RS-426-A
1980 (see Power-Handling Capacity
section):
Sx80PI:
175 watts
Sx80PIX:
2-60 watts, selectable in 3 dB steps
(transformer-limited)
Maximum Woofer Acoustic Output:
2.1 watts
Sensitivity (SPL at 1 watt, 1 meter
input, half-space, swept sine wave):
92 dB
Nominal Coverage Angle,
Horizontal: 90°
Vertical: 65°
Dispersion Angle Included by
6-dB-Down Points on Polar Re-
sponses, Indicated One-Third-Octave
Bands of Pink Noise (see Figure 3),
2,000-20,000 Hz, Horizontal:
90° (+34°, -27°)
2,000-20,000 Hz, Vertical:
65° (+31°, -4°)
Directivity Factor R
Θ
(Q), 800- to
16,000-Hz Median (see Figure 4):
8.3 (+5.7, -4.9)
Directivity Index D
i
, 800- to 16,000-Hz
Median (see Figure 4):
9.2 dB (+2.3 dB, -3.9 dB)
Distortion, 0.1 Full Power Input, (see
Figure 5)
Second Harmonic,
100 Hz:
-21 dB, 9.0%
1,000 Hz:
-55 dB, 0.2%
10,000 Hz:
-25 dB, 5.6%
Third Harmonic,
100 Hz:
-26 dB, 4.9%
1,000 Hz:
-41 dB, 0.9%
10,000 Hz:
-47 dB, 0.5%
Transducer Complement,
High Frequency:
DH2005 driver
Low-Frequency:
203-mm (8-in.) woofer
Box Tuning Frequency:
70 Hz (open port)
Crossover Frequency:
2,200 Hz
Crossover Slope,
12 dB per octave
Impedance,
Sx80PI;
Nominal:
8 ohms
Minimum:
7.2
Sx80PIX;
Input Connections,
Barrier Strip with Cover
Driver Protection, High Frequency:
Solid-state self-resetting circuit
(PRO™ circuit) drops output 6 dB;
blocking capacitor with 800-Hz corner
frequency and 6-dB-per-octave slope
Materials,
Enclosure:
Black injection-molded high-impact
polystyrene, black
Grille:
Black perforated metal grille
Dimensions (see Figure 6)
Height:
400 mm (15.75 in.)
Width:
292 mm (11.49 in.)
Depth:
240 mm (9.45 in.)
Net Weight:
8.2 kg (18 lb) - Sx80PI
9.3 kg (20.5 lb) - Sx80PIX
Shipping Weight:
10.0 kg (22 lb) - Sx80PI
11.1 kg (24.5 lb) - Sx80PIX
Optional Accessories:
Sx80MB black installation kit,
Sx80SM stand mount kit
Attachment Points:
Seven M6 and four M5 metric inserts
(see Figures 7, 8, and 9 and Suspend-
ing Sx80PI Enclosures section)
Power
Impedance
Tap
100-volt
70-volt
60 W
167
Ω
83
Ω
30 W
333
Ω
167
Ω
15 W
667
Ω
333
Ω
7.5 W
1,350
Ω
667
Ω
3.8 W
2,700
Ω
1,350
Ω
1.9 W
5,400
Ω
2,700
Ω
