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Ditto to you Chris. It's hard when you find out. My wife and I couldn't believe it. And now I've lost her to Covid complications on 9/4/21. Her digestive system failed. I did not know people die from digestive system failure.... I'm literally as of 2 months ago, back to the FERAL MALE I...

My buddy Bob was a audio/visual engineer with a masters degree for Paramount studios. On shoots he just played video games until something broke. Back at the farm he would repair boards/units that broke during shoots. All the engineers there used the same temp of 743f which is 395c, so that's...

A 5F1 Champ is a very small amplifier, meaning smaller chassis, fewer tubes, fewer caps and resistors, less expensive transformers. Mojo has the plans available online, I'm not sure if there is a BOM but it's very easy to do the same sourcing we do for pedals and put together a BOM from the...

I think I'm on my fifth or sixth tip.....

When it looks more like a fish hook than a soldering tip, it's really time.... And I'm not kidding! I've only made a few pedals, but a lot of tube amps. Maybe not the same when soldering tiny connections...... I'm on my seventh POUND of solder in the past 20 years.

I like the alligator clips so I can attach the leads, one at a time with one hand behind my back, to the HT and ground so I can watch it discharge.

These are great additions for the probes when working with high voltage

I made my discharge tool out of 10ga wire (I have 1500'), a 22k 5w resistor, heat shrink, a bamboo skewer, and tie wraps. No melted metal when you do it with a resistor. Without it's a very loud pop and the end of your screwdriver is missing.

Oops, two part question. Yeah, just the power caps. Be sure you touch the positive leads of each cap and watch the MM as it drains. So two alligator clips.

Always discharge the caps, even if you're sure they are discharged.

VERY important to stick your UNUSED hand in your belt behind your back. If that hand is touching ground, and you inadvertently touch high voltage with your other hand the current will flow across your heart and stop it or cause defibrillation!!! Be sure someone in the house is with you and...

And yet in the article they say there's too little research. This is a story designed to generate more revenue for "scientists" like the one I mentioned who live on grant money.

Like Abraham Lincoln said "You can't trust everything you read on the internet" I saw this one article about how all fish have nano-plastics in them. After researching the researcher I found the article was based on the work of an anti-plastic activist who collected samples of water from mud...

It's like climbing the mountain BECAUSE THEY'RE THERE!

Mojotone makes a DR504 kit now. This is the Hiwatt that David Gilmore plays. I built one NOT from a kit back in 2008. There was a guy on the Vintage Amp forum that made the chassis and faceplates so I bought six from him. Sold three and it paid for the three I kept. This amp sounds the same...

I know next to nothing about this amp, other than I have heard a lot of complaints. I think the problem is in the name and the usage. 'Hot Rod' deluxe, as I'm looking at the input stage I see the bias is done with a 47uf 1.5k which is very unFenderIsh. And a 250k volume pot? I think maybe...

It doesn't matter because it's like pedals, once you build one you can't wait to do the next!!!

Did you use a noisy device? Those spiral neon bulbs are VERY noisy, so are most 120v outlets and even switches. I have an EMR detector and was shocked to see outlets put out more noise than wifi. I have tested orange drops before, with my handy dandy polarity reversing audio tester. Turn...

The outer foil acts like shielding when it's connected to the side with the least impedance, so the caps won't pickup stray EM from the heaters or transformers. If you have an oscilloscope there's 'how to' use those to find foil end on youtube, but you can construct a simple audio tester see...

I used to wish Ken U happy birthday every year until the vintage amp forum went offline..... miss that place