Specifications – MACKIE SP400C User Manual
Page 7
SP400C – 7
SP400C Frequency Response vs. Impedance
Frequency (Hz)
SPL, 1W/1m (dB)
Impedance (ohms)
20
60
70
80
90
100
100
1000
3160
100
1000
10000
20000
Frequency (Hz)
Vert BW
Horz BW
–6 dB Beamwidth (degrees)
20
60
120
180
240
300
360
100
1000
10000
20000
SP400C Beamwidth vs. Frequency
Waveguide Design
Horizontal Coverage:
110º 1 kHz to 6 kHz averaged
Vertical Coverage:
110º 1 kHz to 6 kHz averaged
Type:
Exponential
Mouth Size:
3.75" x 3.75" (95 mm x 95 mm)
Throat Size:
1.0" (25 mm)
Physical
Contruction Features
Basic Design:
2-way, front loaded
Bezel Material:
UL94V-0 rated material
Rear Enclosure Material:
Steel
Grille:
Perforated metal with weather-
resistant coating
Safety Features
Rear-hanging Ring:
Safety loop located at rear of
enclosure for attachment of load
bearing safety strap
11.8 in.
(300 mm)
9.5 in.
(241 mm)
10.8 in.
(274 mm)
5.6 in.
(142 mm)
6.6 in.
(168 mm)
Safety Agency Rating
UL1480:
General Signaling Fire Standard
UL2043:
Fire Test for Heat and Visible Smoke
Release for Discrete Products and
Their Accessories Installed in Air-
handling Spaces
Inputs/Outputs:
Removable locking connector with
screw-down terminals
2 input terminals and 2 loop-thru
terminals.
Dimensions
Diameter x Height:
11.8" x 6.6" (300 mm x 168 mm)
Front of Ceiling Tile to Back of Back Can:
5.6" (142 mm)
Cutout Size:
10.8" (274 mm)
Net Weight:
7.9 lbs. (3.6 kg)
Included Accessories:
Grille, Support Rails, C-Ring,
Removable Locking Connector, Cut-
out Template, Paint Shield