Master Level Controls
Each channel is able to control its volume independently relative to the other channel. At the bottom left of the rear panel, there are 2 screwdriver adjustment knobs which correspond to the volume level of the channel identified by a channel designator below it.
The volume range is labeled Minimum to Maximum and has 1 steps (clicks) at a center detent position as a reference. Rotate the knob clockwise to increase output, and counter- clockwise to decrease output.
These adjustments set the master level and if not set up at initial setup of the AMP200 will or may adversely affect the performance of the amplifier.
To set the Master Level controls begin by adjusting the front panel “Volume Trim” to its fully clockwise position. Also set the front panel “Balance Trim” to its center detent position. Now adjust both the Left and Right Channel Master Level controls to set a “Maximum” desired volume for the AMP200 in its application, as well as setting an appropriate “Balance” from left to right.
Now the front panel Volume and Balance Trim controls can make fine adjustments to your set up in this application.
RCA Input
| Line 1 | Line 2 |
Line 1 | S peaker In | Line 2 |
R | L | Out |
IN | IN | |
+ | + | L |
L |
| |
|
| Delay |
_ | _ | Time |
| ||
R |
| R |
3 Sec 15 Sec
There are a total of 4 RCA inputs on the back panel of the AMP200. These RCA inputs are labelled as “Line 1 Input” and “Line 2 Input”. They are also designated with an “R” or an “L” as Right channel or Left Channel inputs respectively.
“Line 2 Input” should be used as the “primary’ or normal input for various line level sources that may be available locally to the amplifier. “Line 1 Input” is a priority switching input that can be used for a second input, such as, the output of a second source, and will take over as the primary input whenever a signal with a minimum of 5mV of level is present. Whenever, there is an absence of signal at the “Line 1 Input” RCAs the input will revert back to the normal “Line 2 Input” RCAs input signal. An adjustable delay of from 3 Seconds to 15 Seconds is available and can be set to accom- modate the nature of the source connected to the “Line 1 Input” RCAs.
As an example, if the “Line 1 Input” source was a CD Changer, the delay could be adjusted to prevent switching back to the “Line 2 Input” source while the changer moves from one disc to another.
Speaker Level Input
The AMP200 also provides a pair of speaker level inputs for those applications where either of the sources has only speaker level output signal available. This input may be switched to be used in place of the Line 1 or Line 2 input.
Mode Switch
To the right of the Master Level controls is a switch labeled “MODE” with “STEREO” and “BRIDGED” as options. If you will be connecting one or two pair of speakers to the amplifier, place the switch in the “STEREO” position.
If you will be using a pair of channels to power a single mono speaker, place the switch in the “BRIDGED” position, and be sure to read the section titled “Speaker Terminals” below.
When you are using the amplifier in “Bridged Mode”, the amplifier is now a single channel Mono amplifier. The two channels have been internally connected in series by the “Bridge” switch. The AMP200 is now capable of 250W, bridged into 8 ohms with less than 0.2% THD+N.
For the amplifier to operate properly in the bridged mode you should have both the “Right and Left” inputs connected to the amplifier. The amplifier will sum these signals and create your Mono source.
NOTE: Both of the “Master Level” adjustments should be set to the same position, and the “Balance Trim”
should be set to the center or 12 o’clock position for the amplifier to operate normally in the “Bridged” mode.
NOTE: This amplifier will produce in excess of 300 watts with a bridged pair of channels. Please verify that your speakers are capable of handling such power to avoid possible
damage!
Speaker Terminals
Each channel has two pair of
4
