Where can I find a Data Sheet for the 420 Stereo Power Amplifier?
420 Data Sheet
: 420 Stereo Power Amplifier
Where can I find a Flow Chart for the 420 Stereo Power Amplifier?
420 Flow Chart
Where can I find a User’s Guide for the 420 Stereo Power Amplifier?
420 User's Guide
Where can I find Schematics for the 420 Stereo Power Amplifier?
420 Schematics
What is the output power rating of the 420 Stereo Power Amplifier?
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.
How can I use the 420 Stereo Power Amplifier for a headphone amp?
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…
What is the minimum load impedance the 420 Stereo Power Amplifier can safely handle?
The minimum load impedance of the 420 is 4 Ohms in stereo or dual-mono mode and 8 Ohms in mono-bridged mode.
How do I set up the 420 Stereo Power Amplifier in mono bridge?
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…
Why is the 420 Stereo Power Amplifier sound noisy?
Check input signal levels, and level control settings. Check gain settings on upstream equipment. Is the input signal already noisy?
My speakers are rated for 50 watts, why did the 420 Stereo Power Amplifier damage them?
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 (-)…
