Appendix C: TH-12A Specifications

Acoustic Performance

 

 

Equalization

 

Frequency Range (–10 dB):

57 Hz – 20 kHz

Low Frequency EQ:

±15 dB @ 80 Hz, shelving

Frequency Response (–3 dB):

70 Hz – 18.5 kHz

Mid Frequency EQ:

±15 dB, bandpass,

 

sweepable from100 Hz to

Horizontal Coverage Angle:

90º

 

 

 

 

8 kHz

 

 

 

 

Vertical Coverage Angle:

60º

 

High Frequency EQ:

±15 dB @ 12 kHz,

 

 

 

Maximum SPL Long-Term:

117 dB SPL @ 1m

 

shelving

Maximum SPL Peak:

120 dB SPL @ 1m

Direct/EQ Switch:

Bypasses EQ section

 

 

 

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)

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

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

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.

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