The baby is asleep, and the 6W tube amp is quiet…

It’s 12:11am, August 12, 2010, and I just gave up doing my College Physics to replace the first stage preamp cathode bypass resistor as noted in V1.3 schematic. I sure wish it wasn’t half past midnight :). I have it on 10° or less volume, and 45° EQ, give or take a degree. I’m just guessing. I really want to crank it up to see if the tone and distortion sounds better. 9-6-2010 – It does need some circuit tweaking. It doesn’t sound good to me after all.

I just had to turn it down some. I can just imagine my wife hearing me play and having a moose because it might wake the babe.

Notice The volume? It's super low and has a great clean tone. The .60mm pick makes more sound than the amp, which makes this a great practice amp for late night "jam" sessions.

Notice The volume? It's super low and has a great clean tone. The .60mm pick makes more sound than the amp, which makes this a great practice amp for late night "jam" sessions.

Tube Amp Build #2 Part 2 (The Circuit Design)

The link is to the circuit design blog. I wasn’t extremely thorough in describing the ins and out of designing because the AX84 project, as noted in the blog, can do a much better job.

I also bought some 6DG6GT tubes…to see if my other tube amp can sound better. At $3.50 each from Tubesandmore.com, I couldn’t pass up a chance at trying it out. I had to buy two Marshall style input jacks for the Marshall repair job so I decided to go in halves for the shipping. I am going to rebuild my first tube amp to make it at least half as good as the new one. Check out my first tube amp here—> Building a Tube Amp from Scratch: Crazy!

I have played the 6DG6GT tube amp described and depicted in the Crazy! blog for hours each week since January 2009. It started to hum really bad a few months ago, even after changing the preamp tube to a 12Av7 tube. That is a  low gain tube, and yet the humm is ridiculous!!!

6DG6GT RCA and TUNG-SOL Power TubesThe other issues with this amp is that the power transformer’s screws came loose from the cabinet, and it rolls around. That is bad news if it hits a tube, especially the zillion dollar rectifier tube. That might actually explain why it sounds so bad. It probably cracked an envelope on the power tubes. I shook them just for fun, and something is rattling around in the Tung-Sol one. that’s probably not a good thing.

Anyhoo, I’m going to sign off and play a few more tunes before I pass out from exhaustion. I’ll try to get a video up on the tube for everyone once I crank the volume up and see if I like what I hear.

“It’s more than just a project”… Tonight, it has become an obsession.

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