420 Data Sheet
: 420 Stereo Power Amplifier
420 Flow Chart
420 User's Guide
Maximum Output (stereo/2-channel) 20 watts RMS, per channel, into a 4 or 8 Ohm load. Maximum Output (mono bridged) 40 watts RMS into an 8 Ohm load.
The 420 is ideally suited to headphone distribution systems. There are two basic strategies involved in making a loud headphone system: 1. If you have low impedance phones, then you need high current capability to make them loud. This translates…
The minimum load impedance of the 420 is 4 Ohms in stereo or dual-mono mode and 8 Ohms in mono-bridged mode.
To prevent inadvertent setting, the bridged-mono mode switch is located inside of the 420. To set or reset the switch, use the following procedure: 1. Disconnect the 420 from the AC power source. 2. Remove the top cover. 3. Locate…
Check input signal levels, and level control settings. Check gain settings on upstream equipment. Is the input signal already noisy?
An under powered speaker can be just as damaged as an over powered speaker. When an amplifier is driven into clipping or square wave it is essentially asking the speaker cone to go full out (+) then full in (-)…