JT’s Pigonse G40V Hot-Rod, Part 1!

I have a Pignose G40V I bought new a few years back and have since loved it’s simplicity and durability. Due to it’s portability, and the size of the venues Grand Beauty generally plays, this amp has seen a lot of action, mic’d through our PA. I won’t claim to know the official pedigree, but it supposedly was designed by someone who had something to do with the original Fender Bassman amplifiers. This sucker is tiny, with only a 10-inch speaker, and packs a massive 40-watt punch!

Pignose G40V
Pignose G40V

Being as cool as it is, I simply can’t leave it alone. Why? Well, it’s equipped with all Chinese parts. Don’t get me wrong- the Chinese are fine people- awesome food, impressive culture. Not necessarily the best folks to be mass-producing tone, though.

Vintage Jensen 10 inch speaker
Vintage Jensen 10 inch speaker

Step number 1 was finding an awesome speaker. CT and I happened on the Midwest Musicians Swap Meet in Saint Louis, where I found a great vintage Jensen 60’s 10-inch speaker in new housing. I also came across a couple of Soviet-era Sovtek 12AX7WB pre-amp tubes (to be seen in part 2).

Testing polarity with D-Cell battery
Testing polarity with D-Cell battery

Once I got the Jensen home, I had to figure out which terminal was positive, as neither one was marked. I used an old trick, where you electrical-tape both the positive and negative ends of a D-Cell (or 9-volt) battery with wire, and then connect to each wire to a terminal. When the speaker “sucks in” on connection, you have negative polarity. Reverse the wires, and you should see a “push out” of the speaker on connection. This will be your positive polarity, and you can now mark on the casing the + and – terminals, and connect it to your amplifier.

Jensen speaker mounted in the Pignose
Jensen speaker mounted in the Pignose

The mounting holes lined up great, and connections were secured. Success! Now my Pignose has a vintage Jensen speaker, rather than the cheap Chinese stock that it came with. Stay tuned for part 2, where I attempt to replace and bias the existing Chinese tubes with Soviet-era, mean-ass Sovteks!

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