13
Appendix C: TH-12A Specifications
Equalization
Low Frequency EQ:
±15 dB @ 80 Hz, shelving
Mid Frequency EQ:
±15 dB, bandpass,
sweepable from100 Hz to
8 kHz
High Frequency EQ:
±15 dB @ 12 kHz,
shelving
Direct/EQ Switch:
Bypasses EQ section
Protection Features
Over-excursion Protection:
Second-order sub-sonic
filter
Thermal Protection:
Independent amplifier
shutdown, auto reset
Driver Protection:
Independent HF and LF
compressors
AC Power Requirements
US:
100 – 120 VAC,
50 – 60 Hz 320 watts
EU:
200 – 240 VAC,
50 – 60 Hz 320 watts
AC Connector:
3-pin IEC 250 VAC,
20 A male
Construction Features
Basic Design:
Trapezoidal
Material:
Polypropylene
Finish:
Textured
Handles:
One on each side, one on
top
Grille:
Perforated metal with
weather-resistant coating
Display LEDs
Front:
Power ON
Rear:
Power ON, OL (overload)
Operating Temperature:
0˚ – 40˚C
32˚ – 104˚F
Physical Dimensions and Weight
Dimensions
Height:
23.5 in / 596 mm
Width:
14.5 in / 367 mm
Depth:
12.4 in / 314 mm
Weight:
25.5 lb / 11.6 kg
Mounting Methods:
Pole-mountable via the built-in socket on the
bottom of the cabinet. Be sure the pole is
capable of supporting the weight of the TH-12A.
Acoustic Performance
Frequency Range (–10 dB):
57 Hz – 20 kHz
Frequency Response (–3 dB):
70 Hz – 18.5 kHz
Horizontal Coverage Angle:
90º
Vertical Coverage Angle:
60º
Maximum SPL Long-Term:
117 dB SPL @ 1m
Maximum SPL Peak:
120 dB SPL @ 1m
Input/Output
Input Type:
Female XLR Balanced /
Unbalanced
Input Impedance:
20 k balanced
bridging;
10 k unbalanced
Loop-through:
Male XLR Balanced /
Unbalanced
(parallel with input)
Level Control:
Rotating knob
0 dB at center
Sensitivity:
+4 dBu for full output
(Level Control @ Center)
–36 dBu for full output
(Level Control @ Max)
Transducers
Low Frequency:
12 in / 305 mm with
steel frame, paper cone
woofer
High Frequency:
Horn-loaded 1 in /
25 mm exit compression
driver
Power Amplifiers
Low Frequency Power Amplifier
Rated Power:
150 watts, 8 ohm load
300 watts peak
Signal-to-Noise Ratio:
>94 dB, 20 Hz to 20 kHz, unweighted,
referenced to 138 watts into 8 ohms
Design:
BTL Class D
High Frequency Power Amplifier
Rated Power:
50 watts, 4 ohm load
100 watts peak
Signal-to-Noise Ratio:
>97 dB, 20 Hz to 20 kHz, unweighted,
referenced to 50 watts into 4 ohms
Design:
Class AB
Electronic Crossover
Crossover Type:
24 dB/octave
Crossover Frequency:
3 kHz
