Sound Pressure Level
101 dB at 1m with 1W input (2.83V)
Phasing (polarity)
Positive voltage on phone jack tip produces positive sound pressure (woofer cone moves out)
High Frequency Section
120°, 90°L, 90°R, or 60° (selectable) radial horn; High-power driver, 1%-inch voice coil
Low Frequency Section
15-inch SMT woofer, 2lh-inch voice coil
Horizontal Distribution
120°, 90°, or 60° (see Figure 3)
Connectors
Two parallel-wired phone jacks for full-range operation, or low frequency only in biamp mode; One switching jack for high-frequency input in biamp mode
Cable
15m (50 ft) 18-gauge, rubber jacketed with phone plugs
Overall Dimensions (including feet)
702 mm H x584 mm W x 402 mm D(27% in. x23 in. x 1513/16in.)
Weight
30 kg (66 Ib)
Construction
15.9 mm (% in.) plywood, black vinyl covering, black steel grille, steel corner protectors, plastic feet
0
HORN
---- 2 kHz
-4 kHz
....... 8 kHz
INSTALLATION
General
Maximum coverage for source-oriented installations is generally obtained with the speakers on both sides of the sound source and as far forward as possible. Each speaker is tilted slightly either downward (for wallor ceilingmounted units) or upward (for floor-standing units). The angle of tilt (assuming a single speaker to each side of the sound source) should be such that you can look into the throat of the horn from the last rows of the audience area covered by the speaker.
If it is desirable to elevate the 711, adequate support for heights up to about one meter (three feet) can usually be obtained using a sturdy table or bench. The surface must be capable of supporting the 30 kg (66 Ib) weight of the speaker. For greater elevations, it is important to note that the 711 is not designed for mounting by simple chains or cables attached to the cabinet top or sides. If the speaker is to be supported by chains or cables, encircle or cradle it.
6O'HORN |
90DR HORN |
|
..... |
2 kHz |
..-- |
|
2 kHz |
|
-4 kHz |
-4 kHz |
|
....... 8 kHz |
...... 8 kHz |
|
TYPICAL POLAR PATTERNS
FIGURE 3
Vertical Distribution
60°
Directivity Factor Re (Q)
500 Hz: |
5.2 |
|
|
1 kHz: |
7.1 |
|
|
|
HORN ANGLE |
||
|
--- |
||
|
120° |
90° |
60° |
2 kHz: |
6.6 |
7.3 |
15.3 |
4 kHz: |
10.3 |
16.7 |
21.6 |
Environmental
Operating Temperature: -7 to 43OC (20 to llO°F) Storage Temperature: -29 to 71°C (-20 to 160°F)
WARNING
It is extremely important that both the mounting surface and the mounting hardware are adequate to support the weight of the speaker. Inadequate support may result in a hazardous operating condition. Whatever mounting means are employed, support should be provided for a speaker static load of 120 kg (264 Ib). Actual weight of the speaker is 30 kg (66 Ib).
If the speaker is elevated and tilted down, it is desirable to attach the grille permanently. Do this by driving screws or nails through the grille frame into the cabinet, or through the sides of the cabinet into the grille frame.
Coverage Angles
The 711 Speaker System features a unique horn with sliding vanes to set variable horizontal dispersion patterns. The 120°, 90° Right, 90° Left, or 60° angle choices provide unprecedented flexibility, making the 711 the one ideal speaker in a variety of circumstances that previously required separate kinds of units to ensure adequate coverage.
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