Directed Audio 250d Instruction Manual download pdf (Page 5)

Specificatio n s

Sonance Cinema SUB 10-250D Amplifier

Output Power RMS: 230 Watts @ 8 ohms (1% THD, 32Hz)

370 Watts @ 4 ohms (1% THD, 32Hz)

Output Power Peak: 260 Watts @ 8 ohms (7% THD, 32Hz)

470 Watts @ 4 ohms (8% THD, 32Hz)

AC Fuse: 120v Model - 8 amp (T8A ~ 250V)

230v Model - 6.3 amp (T6.3A ~ 250V)

AC Power Consumption: 588w @ 4 ohms (sine wave, full power)

396w @ 4 ohms (music, full power)

22w idle (no signal)

Heat Output: 102 BTU/HR @ 8 ohms (music, full power)

183 BTU/HR @ 4 ohms (music, full power)

Shipping Weight: 19 lbs (8.6kg) each

Setup and Cal i bration

Audio Input Connection

In a typical modern home theatre system the signal to the subwoofer

will be from the (LFE) output on your surround receiver or processor.

Connect the (LFE) output to the input marked (LFE) on the subwoofer

amplifier.

Subwoofer Driver Phase

Before connecting the wires from the subwoofer driver to the

amplifier, you should make certain that the subwoofer driver is

connected in the proper phase. To do this take a small battery rated

at around 1.5 volts; AA, C and D batteries are all this voltage. Hold

the positive wire from the subwoofer driver on the batteries positive

terminal an momentarily touch the negative wire on the negative

terminal. As you touch the negative wire on the negative terminal

observe the subwoofer driver, it should move out (into the room)

every time you touch the terminal.

If the woofer moves in, this indicates the woofer is not connected

correctly. You can either remove the subwoofer driver from the

enclosure and reverse or correct the connection there or just reverse

the connections on the back of the amplifier to return the subwoofer

system to the correct phase.

If your home theater contains more than one subwoofer repeat the

above process for each subwoofer driver. In a multiple subwoofer

installation this step is critical to achieve maximum performance.

Power Connection

Once the output from your surround receiver or processor and the

speaker wires from your subwoofer driver are connected to the

amplifier, you can connect the power cord.

Front Panel Switch Settings

In a typical home theater system set bypass switch to ON and set the

phase switch to the 0 DEG stetting.

With the bypass switch in the ON position, the volume and crossover

frequency controls do not function.

Calibration

Now you are ready to calibrate your system. Many modern surround

receivers and processors contain an automatic calibration and

equalization system. If yours does contain one, follow the

manufacturer’s instructions on how to complete this process. The

highest performance will be achieved if you complete this calibration

process. This automatic process not only sets the correct level for the

subwoofer but it also performs equalization to provide the best bass

performance possible in your room.

If your surround receiver or processor does not contain an automatic

calibration routine, you will need to do this manually. Once again,

follow the instructions provided with your surround receiver or

processor. A simple SPL (sound pressure level) meter will be needed

to calibrate your system correctly. The use of an SPL meter is strongly

recommended.

Typical Home Theatre

SONANCE CINEMA

SUBWOOFER AMPLIFIERS

Signal-to-Noise Ratio: -95dB (w/22kHz A-WTG Filter)

Line Input Impedance: 10k ohms

Line Output Impedance: 100 ohms

Auto-On Trigger Sensitivity: 7.0mV LFE Line Input (3.5mV Stereo)

Low-Pass Crossover Freq (BYPASS Switch OFF):

50Hz ~ 150Hz (variable), 12dB/octave

Low-Pass Crossover Freq (BYPASS Switch ON):

250Hz (fixed), 12dB/octave

Hi Level Out Hi-Pass Filter: -3dB @ 150Hz, 6dB/octave

Line Level Out Hi-Pass Filter: -3dB @ 150Hz, 6dB/octave

Controls: Variable crossover freq and output level,

Phase switch, Bypass switch

Dimensions (W x H x D): 16

3/4"

x 3

7/8"

x 13

1/2"

(425mm x 98mm x 343mm)

RMF Dimensions (W x H x D): 19

x 3

7/8"

x 13

1/2"

(483mm x 98mm x 343mm)

Rack Space Requirement: 2U

Certifications: ETL, CE, C-Tick, FCC

Common Specifications

Sonance Cinema SUB 12-500D Amplifier

Output Power RMS: 400 Watts @ 8 ohms (1% THD, 26hz)

660 Watts @ 4 ohms (1% THD, 26hz)

Output Power Peak: 446 Watts @ 8 ohms (4% THD, 26hz)

776 Watts @ 4 ohms (6% THD, 26hz)

AC Fuse: 120v Model - 12 amp (T12A ~ 250V)

230v Model - 8 amp (T8A ~ 250V)

AC Power Consumption: 985w @ 4 ohms (sine wave, full power)

564w @ 4 ohms (music, full power)

45w idle (no signal)

Heat Output: 183 BTU/HR @ 8 ohms (music, full power)

285 BTU/HR @ 4 ohms (music, full power)

Shipping Weight: 20 lbs (9.1kg) each

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Directed Audio 250d Instruction Manual Page 5

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