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Post pics of your builds.... - Page 639

post #9571 of 9701

Thanks a lot for the comments.  They mean a lot to me.

 

I really enjoyed building this.

post #9572 of 9701
Milosz, that is a nice built. I am looking around for cases. Did you make that one?
To continue with the electrostatic builds, here is the Kevin Gilmore Megatron electrostatic amplifier, minus the casing biggrin.gif





Edited by gilency - 6/28/14 at 4:53pm
post #9573 of 9701

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post #9574 of 9701

The Beta 22 case is Par-Metal 20-16123N, with a DIY front panel and wood 'cheeks'

 

The rear area has been modified too, cut away to fit the Delrin (Or is ir Derlin?) the PLASTIC block that holds the IEC inlet and is part of the isolation setup for the power supply.

 

By the way there's a real sapphire set into the volume knob for the pointer dot.... it's only 2 mm but it's there. (REAL but lab-made, not mined.)

 

Lotta tubes in that Megatron.  I'd like to build one maybe but boards are not available (last I heard) and I don't have the energy to organize a board run.  For a casework feature on that baby you house the valves in Pyrex tubes cut to differing lengths like the ranks of pipes in an organ....

 

Lotta transformers in that thing, too, holy cow.

 

I gotta finish my DIY T-2.  So many projects....

post #9575 of 9701

Alright I guess I will start to post pictures soon.  I am working on a fully balanced Pass Labs F4.  The goal is to try to fit two mono blocks into one chassis without it being so hot that it melts though my floor.  So far I have built all the boards and have only snapped one 4-40 tap so I think I am looking in good shape  :p.  Pictures are on the way.  I estimate this thing to weigh over 50lb and also hope that I can get it done in time for the bay area meet  because I know that some people want to hook up their HE-6 to it. 

 

Stay tuned

post #9576 of 9701
Both neat builds.
post #9577 of 9701
Some teasers. Finished with mounting all 4 boards and 24 mosfets to the heat sinks and all hardware to the bottom of the amp. Now working on the back pannel. Not sure how I am going to drill holes big enough for the for jacks and make a square hole for the iec connector. Anyone have any suggestions?



Edited by Zashoomin - 7/17/14 at 12:29am
post #9578 of 9701

IEC? Drill, drill, drill and file, file, file. Then file some more.

post #9579 of 9701
Some progress
post #9580 of 9701

Finally got around to finishing my HeadWatt.  This is a design by Bruce Heron based on the 6DJ8. Vixr did the board layouts with some modifications by me.  How does it sound?  First of all, the amp is dead silent, even at full volume.   After listening for a few hours with my Senn. HD600's, a few things stood out. Gershwin's "Rhapsody in Blue" on two pianos was fantastic as were all of the Janis Joplin I could throw at it. Chamber music also does very well with this amp. The amp falls off a bit and seems a little slow when there is a lot of bass as when playing Kodo. It still sounds good but the bass is just a bit weak. This was to be expected due to the smallish output transformers.  Still have a bit of wire management.

One last thing, I have 2 extra sets of boards if any one is interested.

 

Jim

 

A couple of pictures:

 

:

 

 


Edited by muskyhuntr - 9/22/14 at 12:22pm
post #9581 of 9701
Quote:
Originally Posted by RudeWolf View Post
 

IEC? Drill, drill, drill and file, file, file. Then file some more.

 

Once i had the same task. It was so annoying and after 9 pm i was filing underneath my blanket because it was so loud. Allways buy a case with a pre cut for the IEC connector! :ksc75smile:

post #9582 of 9701

Some eBay cases come with pre-cut IEC inlets, however sometimes they could end up not matching the inlet you've chosen. Fortunately I have a CNC house where I can do all the holes I need on two panels for like 30EUR.

post #9583 of 9701

I was going to get one of those as it would have saved me the money to have to send it over to Front Pannel Express, but they didn't have one that was big enough or with XLR inputs.  

post #9584 of 9701

Finally finished.  Just biasing and burning in to do.  First Watt F4.  I put two monoblocks in one chassis.  One monoblock per side.  The advantage of this is that it is lighter overall than having two monoblocks, and I can choose between having many many different configurations.  This will do 25Wx4 into 8ohms, 50Wx2 into 8ohms or even 100Wx2 into 8ohms.  The disadvantage is that instead of having two big amps I now have one monsterous one that weighs enough to break my back.  

 

 

 

This is a standard 12oz can for scale.  Yes, it is monsterous.  

 

Krell KSA-5 and Speakers are in the works.  Stay tuned.  

post #9585 of 9701
Quote:
Originally Posted by Zashoomin View Post

Finally finished.  Just biasing and burning in to do.  First Watt F4.  I put two monoblocks in one chassis.  One monoblock per side.  The advantage of this is that it is lighter overall than having two monoblocks, and I can choose between having many many different configurations.  This will do 25Wx4 into 8ohms, 50Wx2 into 8ohms or even 100Wx2 into 8ohms.  The disadvantage is that instead of having two big amps I now have one monsterous one that weighs enough to break my back.  











This is a standard 12oz can for scale.  Yes, it is monsterous.  

Krell KSA-5 and Speakers are in the works.  Stay tuned.  
Good work.
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