L0rdGwyn's DIY Audio

[L0rdGwyn]

The blue on this amp really does look different in different kinds of light, it's hard to capture the true color on camera, especially in low light. Here is one more pic, just a phone shot, using the globe RCA 45 I picked up a few weeks ago. The amp looks teal lol.

 

[CJG888]

The blue on this amp really does look different in different kinds of light, it's hard to capture the true color on camera, especially in low light. Here is one more pic, just a phone shot, using the globe RCA 45 I picked up a few weeks ago. The amp looks teal lol.

Almost Porsche Maritimblau!

 

[whirlwind]

The blue on this amp really does look different in different kinds of light, it's hard to capture the true color on camera, especially in low light. Here is one more pic, just a phone shot, using the globe RCA 45 I picked up a few weeks ago. The amp looks teal lol.

Sometimes it looks lavender ...sometimes blue/gray...and here it looks the color of a DN amp.
Looks great no matter what.

 

[whirlwind]

Hmmm think it would depend on the IEM, output impedance on that tap is likely around 10ohm, but very sensitive IEMs will be prone to an audible noise floor. So I don't know! Something like the ER4XR would probably work well, maybe Zach can give it a shot and let us know. I am IEM-less at the moment -_-

I am looking for a nice IEM upgrade....I feel like there is way too many to keep up with and a new one coming out every week

 

[L0rdGwyn]

I am looking for a nice IEM upgrade....I feel like there is way too many to keep up with and a new one coming out every week

Yeah a lot of choice out there, I need a new pair myself. I mostly use them for travel, but haven't been doing as much of that lately will have to ask around when I'm ready to pull the trigger. Just had a birthday, thought about asking for some new IEMs, but instead I asked for books on winding transformers

 

[L0rdGwyn]

Tried out the pair of low testing globe 45 I bought a few weeks ago, had to adjust the bias of course, but still sound great, totally usable.

 

[Xcalibur255]

Are the 5687 tubes staying in the final build?

 

[L0rdGwyn]

Are the 5687 tubes staying in the final build?

Yup, just need to confirm with Zach. Doing it for a few different reasons:

-Around half the gain of the 6E6P, which is a more appropriate amount for a headphone amp. The volume knob was quite sensitive with the 6E6P
-Easier to test on Zach's Hickok tester, which would not have settings for 6E6P. I had planned to try testing 6E6P with settings of a near equivalent western tube, but had not yet confirmed it would work out
-More variety of tubes to try out as there were many manufacturer's of 5687 along with different variants (5687WA, 5687WB), in addition to being able to use E182CC / 7119 and 7044. Could even use the unobtainium Bendix 6900! And a few other tubes with adapters
-Less prone to oscillation than 6E6P. Measures were taken to avoid it, but you can never be certain that a bad egg won't turn up

So yeah I think overall it makes sense from a design and practicality standpoint while adding more tube rollability.

 

[leftside]

I am looking for a nice IEM upgrade....I feel like there is way too many to keep up with and a new one coming out every week

Yeah those things are nuts. My buddy collects them like I collect tubes Just get a good set and then ignore every IEM thread on here.

 

[L0rdGwyn]

I think I will miss this amp when it's gone...maybe I will find "problems" and "important tests" to run for, oh, a few more months

Don't think I showed it with ST shaped 45s. This is actually the closest to the real color I have photographed.



Did some boring tests today, checking fuse ratings, adjusting trimmers, etc. Placing one final order for a few components, extra fuses and such, rounding the corner to the finish. I'm tempted to buy a pair of E182CC to see how they sound in this amp (I only have a single).

Once I get this shipped off, it will be back to working on the two Airmids!

 

[L0rdGwyn]

Curiosity got the better of me, grabbed a few different 5687 to try, bronze plate RCA and GE 5 star, as well as a pair of Amperex E182CC. Will get to take them for a test run before I ship the amp, they'll come in handy some day I'm sure.

 

[whirlwind]

Curiosity got the better of me, grabbed a few different 5687 to try, bronze plate RCA and GE 5 star, as well as a pair of Amperex E182CC. Will get to take them for a test run before I ship the amp, they'll come in handy some day I'm sure.

Ha.....this was bound to happen.....you need to make one for yourself

 

[Xcalibur255]

I would think that the 801A would be on the same footing performance-wise. Maybe a different flavor but still good.

 

[2359glenn]

Hi Everybody

Happy Thanksgiving

Been gone for awhile due to health issues

Have a great weekend

 

[Galapac]

Happy Thanksgiving everyone!

@L0rdGwyn I know you wanted to see my finished Elekit TU-8200R DX that I had painted in a special powder coated red but need to take photos of the inside using the Lundahl transformers as I was so psyched to get it built, it was together before I finished taking pics of the inside. Will share on the Elekit thread later at some point.

I can’t stop listening to this new amp!