New Build (Guitar Amp)

Trout · 16th December 2005, 11:48 PM

Ah Yes, The Build of the week here, another Guitar amp
This one is my most complicated build this year, 7 Days from bare chassis to operational.
1955-1960 series Bandmaster 5E7.

I built this to be a head style mount on a nice solid Hammond chassis.

This ones modded in that I tweaked a few caps to get to differently voiced inputs, 1 Normal Channel & 1 Bright Channel.
I added a master volume to allow utilizing the full gain potential of the pre-amp without knocking down the walls with volume

The Opt is one that I gave a facelift to, Old Paper icky looking thing inside the nicer top mount end bells. I only hooked up the 4 & 8 Ohm taps, I figured I would never need the 16's anyway.

Interestingly to me, I used to play through an original bandmaster back in the late 60's, I do not remember it sounding nearly this good. I dont know if the messy point to point wiring has contributed to this or if my memory is mush. But, This baby is whisper quiet and screams with the best I have ever heard.

Pics

Front View
Back View
Bottom View
Bottom View2

I'll post more info and maybe a few sound clips this coming week. I wanna burn it in a day or two.
Gene

poobah · 17th December 2005, 01:32 AM

Nice looking rig Trout! BTW, your wiring is hardly messy. I guess this one works too?

Are you gonna build a nice box for this guy too?

Trout · 17th December 2005, 01:57 AM

Quote:

Originally posted by poobah
Nice looking rig Trout! BTW, your wiring is hardly messy. I guess this one works too?

Are you gonna build a nice box for this guy too?

Yep,, This puppy sounds incredible, I have already punched a chassis for a second one. After building this one and reviewing everything closely, I find that If I move this over 3/4 inch, And move that over 1/2 inch, I can shorten several componet leads significantly.

Im building boxes for 2, This thing works well enough to warrant a back up. These are most likely going to see alot of gig action and a back-up is nearly mandatory.
Trout

poobah · 17th December 2005, 02:03 AM

Do you have punches for sheetmetal? OR do drill and dremel?

Trout · 17th December 2005, 03:59 AM

My Gal bought me a full 25pc set of greenlees at an auction this past summer for $8 bucks. I use those as often as possible, I still hack out the IEC jacks a bit with a dremel, My square greenlee just isnt big enough. Hopefully I'll get nippers for Xmas

I use step drills on the jacks and pots, They work great.

My first amp when I just started in the hobby this past summer I used a drill and a 3/8's inch diameter rat tail file to do the tube socket holes, After 3 octals my arm was like lead! Thats when I told her to watch for the greenlee punches.
Gene

poobah · 17th December 2005, 02:30 PM

Cool... Iwas going to tell you about the step drill... but your all over it. You'ld be surprised how many peolple don't know about them.

Lookin good!

16th December 2005, 11:48 PM	#1
Trout diyAudio Member Join Date: Nov 2004 Location: Midwest Madman	New Build (Guitar Amp) Ah Yes, The Build of the week here, another Guitar amp This one is my most complicated build this year, 7 Days from bare chassis to operational. 1955-1960 series Bandmaster 5E7. I built this to be a head style mount on a nice solid Hammond chassis. This ones modded in that I tweaked a few caps to get to differently voiced inputs, 1 Normal Channel & 1 Bright Channel. I added a master volume to allow utilizing the full gain potential of the pre-amp without knocking down the walls with volume The Opt is one that I gave a facelift to, Old Paper icky looking thing inside the nicer top mount end bells. I only hooked up the 4 & 8 Ohm taps, I figured I would never need the 16's anyway. Interestingly to me, I used to play through an original bandmaster back in the late 60's, I do not remember it sounding nearly this good. I dont know if the messy point to point wiring has contributed to this or if my memory is mush. But, This baby is whisper quiet and screams with the best I have ever heard. Pics Front View Back View Bottom View Bottom View2 I'll post more info and maybe a few sound clips this coming week. I wanna burn it in a day or two. Gene

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17th December 2005, 01:32 AM	#2
poobah diyAudio Member Join Date: Nov 2005	Nice looking rig Trout! BTW, your wiring is hardly messy. I guess this one works too? Are you gonna build a nice box for this guy too?

17th December 2005, 02:03 AM	#4
poobah diyAudio Member Join Date: Nov 2005	Do you have punches for sheetmetal? OR do drill and dremel?

17th December 2005, 03:59 AM	#5
Trout diyAudio Member Join Date: Nov 2004 Location: Midwest Madman	My Gal bought me a full 25pc set of greenlees at an auction this past summer for $8 bucks. I use those as often as possible, I still hack out the IEC jacks a bit with a dremel, My square greenlee just isnt big enough. Hopefully I'll get nippers for Xmas I use step drills on the jacks and pots, They work great. My first amp when I just started in the hobby this past summer I used a drill and a 3/8's inch diameter rat tail file to do the tube socket holes, After 3 octals my arm was like lead! Thats when I told her to watch for the greenlee punches. Gene

17th December 2005, 02:30 PM	#6
poobah diyAudio Member Join Date: Nov 2005	Cool... Iwas going to tell you about the step drill... but your all over it. You'ld be surprised how many peolple don't know about them. Lookin good!