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 Post subject: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 11:00 am 
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Well here goes guys. It ain't pretty like Bluesky's, but it's a great project for someone looking for a person looking for a fun project that's fairly easy and sounds great. It comes from Mod Kits DIY
http://www.modkitsdiy.com/ about $215. It has no eyelet board and is what's considered true point to point wiring. It's the way it was done back in the caveman days. It EL84 powered with a 12ax7 preamp tube. Solid state rectifier using two diodes. Very simple build.
Here's the chassis and parts. Nothing fancy or shiny for that matter. You need to file the holes to get the paint off them so you get a good ground. I actually ground the paint off where the terminal strips bolt to the chassis to get an even better ground.

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Next up mount the tube sockets and rubber grommets.

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Next comes the transformers, pots, power switch, fuse holder, jacks and light.

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Here's the power supply caps installed.

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Here's pretty much the finished product. Like I said, it's a very simple project.

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Like Bill says in his build. You need to keep track of the next step and not get ahead of yourself because you'll make it tough on yourself if you solder something too soon and it's in the way of the next step. The instructions were very clear. I used my cheapie Radio Shack meter to measure the resistors just to be sure and all were well within spec and a few were even dead nuts on their values. Parts seem to be decent quality. It has a Hammond power tranny from Canada, I know nothing about them. I'd like to build another one using Merc Mag trannies, Sprague caps and carbon comp resistors just to hear the difference in tone.

But for the money, I'd highly recommend this for a first build if you'd like to try old school amp building. Be sure to route the wires as recommended and keep the runs short to keep the amp quiet.

It's Alive! And sounds great.

Image

Sorry about the crappy shots. I built this in my darkroom because it's really well ventilated but space was limited.

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 11:12 am 
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Looks real nice supro!! I'd sure like to hear it. Thanks for sharing this build with us. Enjoy it!! 8) :wink:


Looks so simple that maybe I could even build one!!


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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 11:15 am 
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Thanks, If I could build one I think an 8 year old could. :lol:

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 11:25 am 
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How many watts is it supro?(never mind, went to the site and see it's a 5 watter) Are you planning on building a cab for it later on? What speakers are you using? Sorry about all the questions but......can't help myself. Anyway, a great job!!


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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 11:33 am 
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fhopkins my friend, never a problem.

It's 5 watts. I plan on getting a faceplate made and building a cabinet too. It's rated at 8 ohms so for now I'm running it through my two Egnater 112 cabs. They're rated at 16 ohms each so together they're 8 ohms. I just ordered a Weber Z Matcher so it can match one 16 ohm cabinet to the 8 ohm amp and I'll be able to run my old Champ through the cabinets too. I was planning on the Z Matcher before I built this anyway.

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 12:14 pm 
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Good job 63supro!

I think it's pretty, and beautiful in its simplicity too. :D

Can you compare the sound to any other amp, or is it very unique in its sound? Just want an idea of the sound if you can. What brand of caps are those? They look familiar.

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 12:58 pm 
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Thanks Lou,
I'm not sure. One of the caps is an Illinois. :? The power supply caps aren't. I'll have to look. I put the polorized direction arrows facing up so I didn't screw up. :lol: The amp is Class A and cathode bias. I'd like to build another one already but source the parts through Mouser. The sound reminds me a little bit of an old Dano DM10 I had but with slightly more chime. It breaks up really nicely with P-90's and Humbuckers. I haven't tried it with my Strat yet.

You know anything about the Hammond Trannies?

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 1:23 pm 
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They are supposed to be top notch transformers, I don't know much else about them.

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 3:14 pm 
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Hammond are great transformers. I use it almost all the time in my amps project.

Nice amp 63supro

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 3:51 pm 
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Looks great Supro, if you built another you would have a nice little stereo rig.
Don't sweat it on the Illinois caps, I used them in one of my builds and the amp sounds and functions just as nice as the one I built with Spragues/F&T, I don't expect it to be any less reliable either. I reckon you're good to go the way you have it. 8)

Snowy.


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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 4:06 pm 
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Thanks for the info guys! It was a fun little project. The same outfit makes a 60 watt head for a little under five bills. Same point to point wiring. Hey Snowy saw you on the UNOFFICIAL MARTIN GUITAR FORUM. Nice to see your amp posted there too. :mrgreen:

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 4:54 pm 
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63supro wrote:
Thanks for the info guys! It was a fun little project. The same outfit makes a 60 watt head for a little under five bills. Same point to point wiring. Hey Snowy saw you on the UNOFFICIAL MARTIN GUITAR FORUM. Nice to see your amp posted there too. :mrgreen:


Yeah I love my Martins too, sometimes it's liberating just to pick up a great sounding acoustic and play, not having to be concerned about amps, pedals, etc, etc. (As much as we love that stuff too!)

Snowy.


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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 5:26 pm 
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I hear you. I just bought my first Martin and I'm sure it won't be the last. :mrgreen:

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 10:15 pm 
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That is really cool 63supro. 8)

I would think a true P-T-P amp would be harder to build than an eyelet or turret board cuz everything is hanging out in free space.

Do they make a 6V6 version?

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 Post subject: Re: Point To Point Amp Build
PostPosted: Tue Jan 03, 2012 10:16 pm 
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63supro wrote:
Thanks, If I could build one I think an 8 year old could. :lol:


Yes, but could a caveman build one? :lol: :lol: :lol:

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