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Optional Tools for Changing Tubes on an Amplifier

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Part of the video series: Changing Tubes on Vacuum Tube Amplifiers

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Summary: Learn what tools you need when changing the tubes on a vacuum tube amplifier in this free video.

Views: 573 | Tags: repair, change, amplifier, tube, tubes, repairs, amp, vacuum, circuits, amplifiers, musical equipment, tube amps

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About the Expert
Contact: Mtroniks.com

Jeff Naylor Jeff Naylor is the owner and operator of Mtroniks Engineering in Mesa, Arizona. Mtroniks has been in business for over twenty-five years, specializing in elec... read more

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Video Transcript

Optional Tools for Changing Tubes on an Amplifier

Hello, this is Jeff Naylor from Mtroniks Engineering in Mesa, Arizona, for Expert Village. The next tools that we'll be discussing are optional for today's bias exercise, but they can help us to gain a more in depth understanding of how our amp actually works. Oscilloscopes like this one I use everyday can be purchased online for under $150 used; this one was $65 plus shipping. An oscilloscope helps us see complex waveforms over time. A dummy load absorbs the power from your amp that would normally be driving your speakers, with the benefit of not making any sound. This is useful for long-term testing at high power when you wouldn't want to be listening to what your amp is putting out. A signal generator produces a controllable signal, most commonly a sine wave. We can compare this known signal shape with the signal measured on the dummy load to diagnose many amp problems. Now that we know what tools we need, let's get started.

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