Blackface head width

There's conflicting information on the web (Gee, imagine that!) regarding the width of several Fender amps. I would appreciate it if owners would measure for me.

I'd like to know the width of the Chassis of both a Blackface Showman and a Blackface Bandmaster.

Measure the width of the faceplate and that will help.

Regarding the Showman, It would be the one without Middle on the normal channel.

Thanks.

Winnie

I am going with 22 1/4 for my BF Showman

Thanks Sam.

Winnie

Still looking for the width of a Blackface Bandmaster.

Winnie

Still looking for the width of a Blackface Bandmaster.

Winnie

Mine's 22.25"

The BF and SF Showman and Bandmaster chassis should be the same width, which is verified by what the owners of a Showman and a Bandmaster posted for dimensions.
Fender used the same chassis for the Showman and the Bandmaster, if you have a Bandmaster, it will have 4 power tube holes punched out, 2 of them are covered with a blank plate.

yegbert and Ringo.

I thought the chassis were the same width, but the Fender Field Guide has different dimensions. That's why I hoped to get it straight from the horses mouth.

Thanks to all.

Winnie

Winnie, I have one of each here. They are the same chassis. The only difference is that the controls for the Vibrato channel are placed/spaced differently since the Showman/DualShowman amps have one more control...MIddle.

Winnie, I have one of each here. They are the same chassis. The only difference is that the controls for the Vibrato channel are placed/spaced differently since the Showman/DualShowman amps have one more control...MIddle.

Thanks Wally, I appreciate that. Are the spaces between the contols different, or is there just one more control on the Showman?

Winnie

Winnie, the BAndmaster's pots are spaced at 1 3/8". The Dual Showmans pots, even in the NOrm ch are at 1 1/4".

Wally,

That's fascinating, who would have thought they'd go to that much trouble.

Thanks again, this is getting really interesteing.

Winnie

Winnie, I guess they figured it was cheaper to build one chassis and simply make the adjustments when punching the front panel for the two different amps....3 if you differentiate between the Showman and the Dual Showman.

And....the cabs are exactly alike, so they were economizing all they could, right?
There is one other amp that used this chassis. I have a '63 BF 1X15 Pro that measures the same and is punched exactly as is the BAndmaster.....and has the 4 octal holes.

Wally,

Punching the front panel differently, yet leaving the extra two octals in the Bandmaster chassis is really odd. You'd think they would leave the front panel the same too and just use different face plates. The Bandmaster one would cover the extra hole.

Winnie

Winnie, the only reasoning I can come up with is the spacing between the last pot on the right and the pilot light. That space inwhich they put the amp model name is already about 4 1/2" on the BAndmaster and this '63 PRo. The Showman/Dual Showman space is under 4 inches. IF they used the Showmand/Dual Showman front panel layout and just left one hole empty, it would be the hole on the far right....and that could enlarge that space to almost 6"....and that might not look 'correct' in comparison to all the other Fender amps of that time. OTher than that, I see no reason...but design has its purpose.
A big empty space over on the right might make people think something was 'missing' from the amp???

Hmmm, makes sense. I don't particularly care for the "DUAL" in Dual Showman. They should have left it be though.

Winnie

Well, I am sure they had to make the public aware of the difference between the Showman and the Dual Showman if they were going to charge more, right? The only thing that would account for the price difference would be that 'dual' speaker versus the single speaker. THat said, I am sure that here were many customers back in the day that would ask.."what's the difference?"
And....the 'Dual' harkens back to the days of yesteryear in Fender history. The first line of Fender 'Woodies' circa 1946 were single speaker amps....Princeton, Deluxe and the Professional. When the first two speaker FEnder debuted circa 1947, they called that amp the Dual Professional, which was the first 'tweed' Fender amp.
So, in a historical sense, that Dual Showman nametag fits right in there. I had never thought of it that way until just now...but there's the history.

is the OT different in a Dual showman vs a Uni showman?

The Dual Showman runs a 4 ohm OT versus the 8 ohm in the Showman.
8 ohm ---- 125A30A which changed to 022897 in '66
4 ohm----125A29A which changed to 022889 in '66

Also the tail resistor of the PI is different between the two. 47 Ohms on the single showman, 100 ohms on the dual showman

Winnie