PS Audio C250 quick start Back Panel Inputs, Back Panel Outputs

The center line, labeled, “%,” presents the same information as above, but displayed as a percentage. Therefore, a 120 volt input should read 100%.

The bottom line, labeled “Energy Storage,” indicates the accepted voltage range to achieve normal operation.

During loud passages, or if your AC line temporarily sags, you may witness some degree of fluctuation in the meter. If the needle consistently resides somewhere outside the accepted Energy Storage range, you may elect to have an electrician check your line voltage to ensure proper operation of the Classic 250.

As discussed in the Front Panel: Power section, a yellow meter indicates standby and a solid blue meter indicates full op- eration. If the amplifier experiences a problem, for example a short circuit or over-voltage, the C250 will go into its fault protect mode. This status is indicated by the meter display flashing blue. If you ever encounter this situation with your C250, first check to make sure that all con- nections are seated properly. Then turn off and unplug the C250 from the wall, allow- ing its circuitry to reset and power it back up. If the amplifier is still indicating the fault mode, please refer to the back of this manual for service.

Back Panel: Inputs

There are two sets of inputs to choose from, single-ended (RCA) and balanced (XLR).

The single-ended RCA connections are a very high quality, gold plated connec- tor designed specifically for PS Audio components. The balanced XLR con- nector is easily identifiable as the larger connector with three individual pins. The C250 is a fully balanced design, thus use of the balanced XLR inputs is the optimal choice.

Stereo Input: Whether you are using a pre-amplifier or a source component with a built in processor, you will want to ensure that the left output from that equipment matches the “Left” of the C250 and like- wise for the “Right.” Be sure to use the inputs in matched pairs for example, use both RCA inputs or both XLR inputs, but never one of each.

Mono Input: If you intend to use your C250 in mono mode, which will require one Classic 250 amplifier per speaker, you must first switch the input selector on the right channel to Mono. This deactivates the right channel input. The left channel connectors are now used for making input connections while in mono. These instruc- tions are also indicated on the back panel in red text.

Back Panel: Outputs

There are four pairs of speaker terminals on the back of the C250. Two pairs are situated on the left channel side and two pairs are situated on the right channel side. There are two pairs of outputs per channel for easier bi-wire connections to your loudspeakers. Both pairs output the exact same signal for their respective channels, right or left.

The C250 uses WBT five-way binding posts able to accept a spade, banana, spade and banana, pin or straight wire.

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