150W Subwoofer Amplifier
Item #300-800
Additional Information and Specifications
The #300-800 Subwoofer Amplifier is ideal for building subwoofer projects for audio and home theatre systems, this amp includes both high and low level inputs/outputs, phase reversal switch, volume control, auto on/off (activated by input signal), and an electronic low pass filter that is continuously variable from 40 to 200 Hz. The amplifier sums the right and left stereo inputs to a mono output, so that only one amp is required per system. Also includes a "Direct In" low level input that bypasses the electronic crossover for use with Dolby AC-3 surround sound decoders (AC-3 has a built in subwoofer crossover).
Controls
Crossover Frequency Control: Continuously variable from 40Hz to 200Hz at 12dB/Octave.
Phase Reversal Switch: Changes phase from normal (0°) to reverse (180°). This will aid in subwoofer room placement. The correct position will be the one that provides the most apparent bass output.
Power Switch (Auto On/Off): When the power switch is in the auto on position, the amplifier will automatically turn on when a signal is present. Note: In auto on/off mode, the Power On LED is always on, even when the amp is in rest mode (off).
Direct In Switch: Allows the user to bypass the built-in electronic crossover. Switch on when using the subwoofer amp with Dolby AC-3 surround sound decoders or external crossover. Switch off when using the built-in variable crossover. Note: For use with line level input only.
Volume Control: Adjusts the output level of the amplifier.
Input/Outputs
Line-in: These are line level RCA inputs. Use to connect pre-out or preamplifier outputs directly to subwoofer amplifier's internal crossover. These inputs are summed to mono. This is the preferred way to connect the subwoofer amplifier. If preamplifier outputs are not available, use the High-level inputs.
Line-out: This line level RCA output provides a full range (20-20kHz) output and is used to connect "daisy chain" the line level signal to other amplifiers. Note: Line-out is only active when a signal is present at the line-in inputs.
Hi-level In: Speaker level input. Input connects directly to receiver via speaker cables.
Hi-level Out: Speaker level output. Used to connect satellite speakers. Note: Signal only present when hi-level input is used. Frequency response is 20-20kHz.
Subwoofer Connection: Connect black lead to P1(Gnd) pin terminal on amp board. This is the negative (-) lead for the speaker.
Connect red lead to P2 pin terminal on amp board. This is the positive (+) lead for the speaker.
Specifications
| Specification |
300-800 |
|
| Power Output |
100 Watts into 8 ohms
150 Watts into 4 ohms |
|
| Total Harmonic Distortion |
0.1% or less |
|
| Signal/Noise Ratio |
100dB (A-weighted) |
|
| Dimensions in. HWD |
9 x 10-1/16 x 5 |
|
| Weight lb. |
9.5 |
|
Parts Express 2003 All Rights Reserved
|
