Front Panel Buttons and Display

Power Button

Press the Power button once to turn the Model 2250 on, press it again to turn it off. The Power button is inoperative when the Auto Turn On switch is set to Audio or 12V.

Note: It is normal for the 2250 Protect indicator to flash briefly right after turn on.

A and B Speaker Select Buttons

These buttons turn on the speaker pairs connected to the corresponding Speaker Pair A and B terminals. They will also select two single mono speakers.

Note: The front panel buttons and switches activate relays which perform the actual speaker switching. The contacts in the relays will last longer if you don’t press the A and B buttons to turn speaker pairs on and off while the 2250 is playing at high volume.

L and R Channel Indicators

L and R will illuminate green when the Model 2250 is turned on and is operating normally. The green L or R indicator will not light if the fault condition is only in that channel. Neither L or R will illuminate if there is a general fault or if the temperature is too high.

Protect Indicator

Protect will illuminate red when the Model 2250 has experienced either an internal or external fault condition which has also activated its protection circuit to prevent internal damage.

Note: It is normal for Protect to flash for a few seconds right after the unit is turned on.

Hi-Temp Indicator

Hi-Temp will illuminate red when the Model 2250 reaches its maximum safe operating temperature.

If the heat persists the unit will soon shut itself off for protection and will remain off until the temperature drops. If Hi-Temp appears, the unit has been over-driven at too high a listening level and/or too low impedance speaker load or has not been provided with sufficient ventilation.

Maintaining Your Model 2250

Your Parasound Model 2250 power amplifier requires no periodic maintenance other than the knowledge that you are bragging about it to your friends. It has no user-serviceable parts inside. To avoid the risk of electric shock, do not remove its top cover. The exterior can be cleaned with a soft cloth pre-moistened only with a few drops of water or glass cleaner.