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The Christiansen "DG" 300B Amplifier Build Thread - Page 27

post #391 of 630
Thread Starter 
Quote:
Originally Posted by nelamvr6 View Post

Marantz had some sweet amps too:









And the Dynaco ST-70 was a true classic:


I need a tissue!
Would these reside at the nelamvr6 residence?
Edited by sceleratus - 8/16/13 at 1:54pm
post #392 of 630

I wish!  biggrin.gif

 

They reside at Google Images...

post #393 of 630

It looks like fun.

 

So, what are you planning on doing?  Restoring a high wattage power amp?

 

I think you need to get the LCD-3 first, to sit with that 300b amp. etysmile.gif

post #394 of 630
Thread Starter 
Quote:
Originally Posted by holland View Post

It looks like fun.

So, what are you planning on doing?  Restoring a high wattage power amp?

I think you need to get the LCD-3 first, to sit with that 300b amp. etysmile.gif

They look cool but no.
I might build another amp for some Thiel CS1.5 that are wasting away as front surround speakers. Replace them with in wall.
Looking to overtake a study that my college kid uses as a man cave on breaks. It's a sty.

Then build and amp and power the Thiels.
Another DG 300B is the most practical because I bought extras of everything. Most everything but the tranny's and 300B' No exotic enclosure this time.
But where's the fun?
Edited by sceleratus - 8/16/13 at 5:58pm
post #395 of 630

PFFFFFFFFFFFFFFFFFFFFFFFFFFFFTTTTTTTTTTTTTTTTTTTTTT!!!!!!!!!!!!!!!!!

 

Screw these weak amps. Just the other night my friend (same guy who built the amp I linked to the show your project thread) listened to this amp with some western horns and a jensen imperial bass driver. 

 

post #396 of 630
Thread Starter 
Quote:
Originally Posted by Tjj226 Angel View Post

PFFFFFFFFFFFFFFFFFFFFFFFFFFFFTTTTTTTTTTTTTTTTTTTTTT!!!!!!!!!!!!!!!!!

 

Screw these weak amps. Just the other night my friend (same guy who built the amp I linked to the show your project thread) listened to this amp with some western horns and a jensen imperial bass driver. 

 

My wife would go for the relay rack in the family room if it were blue..... NOT !!!!

post #397 of 630
Thread Starter 

I think this Norman bel Geddes design be a bitch'n model for an amp enclosure.   (There goes the budget)

 

 

 

 

This concept too..

 

 

post #398 of 630
Quote:
Originally Posted by sceleratus View Post

My wife would go for the relay rack in the family room if it were blue..... NOT !!!!

 

She would if she realized what that was. Those are all western electric amps, a Thorens record player with a custom plinth, and some dac that we didn't bother to use. That rack literally costs more than my house, and we don't live in a poor neighborhood. 

 

Just think that the power tubes are WE 300B tubes and that the transformers cost 20 times more than the tubes do. 

 

I WANT IT!!!!!!!!!!!!biggrin.gif


Edited by Tjj226 Angel - 8/16/13 at 7:58pm
post #399 of 630
Quote:
Originally Posted by sceleratus View Post

I think this Norman bel Geddes design be a bitch'n model for an amp enclosure.   (There goes the budget)

 

 

 

 

This concept too..

 

 

 

 

 

I think the little radio would be cool. You could knock out the dial screen and make a little window to put tubes behind. Then rip out the speaker inside and use the area to vent any heat. IDK if it would be big enough or sturdy enough to actually support any type of large power transformer though. If it is a sturdy radio, it can be done. 

 

The bottom one....eh. I have no idea how I feel about it.  

post #400 of 630
Thread Starter 
Quote:
Originally Posted by Tjj226 Angel View Post

 

 

 

I think the little radio would be cool. You could knock out the dial screen and make a little window to put tubes behind. Then rip out the speaker inside and use the area to vent any heat. IDK if it would be big enough or sturdy enough to actually support any type of large power transformer though. If it is a sturdy radio, it can be done. 

 

The bottom one....eh. I have no idea how I feel about it.  

They are broad "concepts" for a larger enclosure.

Just looking at lines, curves, &  flow.

post #401 of 630
Quote:
Originally Posted by sceleratus View Post

They are broad "concepts" for a larger enclosure.

Just looking at lines, curves, &  flow.

 

 

I know, but I think it would actually be cool just to use the little radio and just mod it a bit. 

 

As for what ever is in the second picture.... wellll.. I can not make up my mind. It either reminds me of the whole "futuristic" look of the 50's or it reminds me of some of the crappier cars of the 80's. 

 

What about a straight steam punk amp? The tube sockets can be made to look like little copper gears and the volume knob can be a little hand crank. 

 

Heck, you could also shrink the amp. Generally speaking, you can find someone who will make you something with a 3D printer in your area or online. Simply make your chassis so that all the parts are form fitting. Then, just use REALLY fine grit sand paper to smooth everything out. Paint it black with a spray can/gun and then add a clear coat to give it a piano black look. 

 

IDK, I like to build more theme oriented things. I try not to do anything too crazy because I usually end up spending a lot of money on something that looks like crap in the long run. 

post #402 of 630
Thread Starter 

I posted a bit back my concern that the volume control would be spongy due to the extension shaft.

I received the Goldpoint Attenuator today, and although the extension is with the woodturner, the control will not be a problem.

 

The action on the Godpoint Elna switch mechanism is fantastic.  As you will see I've put the knob inside until the shaft and new knob arrive.

Now my ears can heal.

 

 

 

post #403 of 630

Looks pretty damn impressive!

post #404 of 630
Thread Starter 

Ok.  I was worried that by adding this thing to the signal path the sound quality would degrade.

Was I wrong !

 

truly wish ya'll could listen to this.  It has never sounded better. Very clean very crisp with a huge voice.

 

When I completed the demo build (without an enclosure) you will recall I was concerned about some snow.  Didn't detract from most tracks.  At that time Tom recommended I put a 56 ohm resistor in.   Cant remember if it what side it was on.  I never did this and 95 % of it disappeared when I went to a balanced I/O.  I'm thinking that some resistance on the input side has actually added to the quality of the sound.

 

Again, I'm clueless.  I solder.

 

The wiring is temporary until some braided shield comes in next week.

 

 

post #405 of 630
Thread Starter 

Cannibals  !!!

 

beerchug.gif

 

 

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