The Gretsch Pages: Discussions: Other Amps: Fender Bassman 20 eh?

Fender Bassman 20 eh?

« » Page 1 2

- Rated: 45 ↑
Nov 7, 2008 7:03 a.m. Tsar Nicholas :

Splish splash splish splash, basically.
- Rated: 40 ↑
Nov 7, 2008 7:08 a.m. Pseudo Man:

Where's your outboard tank? Deluxe reverb boy.
- Rated: 66 ↑
Nov 7, 2008 7:15 a.m. Walter Broes:

Well, here's my tank and amp...

Pseudo, when you play clean, not thàt much difference, but once you start turning up the amp and it breaks up a little, the reverb gets more out of control and dramatic, because you're distorting the reverb too. Some people hate that effect, I like it, up to a point.

Once you get to "crunch" overdrive, it gets fairly ugly and too out of control, but we're not playing Marshall 900's, right?
- Rated: 45 ↑
Nov 7, 2008 7:40 a.m. Tsar Nicholas :

PseudoMan said: Where's your outboard tank? Deluxe reverb boy.

One of these days..
- Rated: 25 ↑
Nov 18, 2008 6:45 a.m. billydlight:

SO how did that bassman 20 turn out for you?
- Rated: 40 ↑
Nov 18, 2008 8:21 a.m. Pseudo Man:

Well, the courier company's tracking says it's been at the depot since last Tuesday. So it's turned out kinda slow.
- Rated: 40 ↑
Nov 27, 2008 7:01 a.m. Pseudo Man:

It turned up yesterday. I had a quick crack at it, but it's damn loud and my walls are thin, so I didn't play long, so as not to upset anyone. It's hideously microphonic, so new tubes will be in order. And the stock speaker, really sounds like a bass speaker, I'll be tracking down a nice low wattage alnico 15" job to try and brighten things up a bit. It's just got a great deal of bass response and not a whole lot of high end detail. But you can hear through these issues, and lurking inside, is an absolute scorcher of an amp. There's nothing quite like a pair of 6v6s sweatin' at your fingertips.
- Rated: 45 ↑
Nov 27, 2008 8:45 a.m. Tsar Nicholas :

You lucky bugger!
- Rated: 40 ↑
Nov 27, 2008 9:02 a.m. Pseudo Man:

Now, the little tube latout inside the cab says it wants two 7025s, but it's got 12ax7s in there, is that why it's so microphonic?
- Rated: 11 ↑
Nov 27, 2008 10:10 a.m. ziess:

7025 is one of the US Military designation for the 12AX7. They also used the 12AX7A and the 12AX7WA. They're electrically all the same tubes constructed to tighter or looser tolerances.

Take off the tube shields and tap gently on the tubes with a pencil eraser and you'll be able to identify which of the tubes are giving you noise.

Tommy.
- Rated: 43 ↑
Nov 29, 2008 7:45 p.m. Jeff O(old News):

What the hell does the Hum Balance 1/4" jack on the back do?
- Rated: 40 ↑
Nov 30, 2008 12:43 a.m. Pseudo Man:

It's probably a line level output, and I reckon if you used a stereo lead it would probably be a shielded signal. That's my best guess anyway.
- Rated: 11 ↑
Nov 30, 2008 3:08 p.m. ziess:

The hum balance is a pot that adjusts the resistance to ground of both sides of the heater wires thus creating a virtual centre tap. It performs the same function as using two fixed-value 100K resistors as you would in some other amps. Turning to either extreme could kill your tubes and power transformer. It is what I would call a 'Bad Thing©' in an amp. Don't mess with it.

Tommy.
- Rated: 8 ↑
Dec 4, 2008 9:46 p.m. Sid:

The hum balance pot is usually a 200 ohm pot that does the performs a similar function as the two fixed value 100 ohm, not 100k, resistors that are across the heaters in some other amps. Unless you have a wiring error in the amp, you can turn the pot to either extreme or anything in between without damaging your amp. Just adjust it for minimum hum.

The speaker I have from a Fender Bassman 20, which I found out is a 60W Pyle, also sounds like a bass speaker. That is why I added two 8 inch speakers in parallel with it in an amp I recently built.