The true experimental tweak thread

[ted_b]

53 minutes ago, tapatrick said:

You also don't need to spend £1000s on expensive LPSUs. I have one Teradak DC30W (£100) with modded caps that is outputting 8V and through 3 sets of dual in series boards is supplying my Aqvox switch, Iso Regen and Bluewave USB to Spdif board with Y cables.

Sweet sounds every night...:)

 

Thanks for these ideas.  So...I have two wonderful linear ps's that I'm not currently taking advantage of, but maybe they are too much power for what I need.  They are namely the Hynes SR3-12 (12V, 3A) and Hynes SR7EHD (can be dialed from 9.5V to 19V internally, something like 7a).   Can either or both of these be used, with y cables and dual series LT's to power any of my stuff like:

JCAT USB (5V)

Singxer SU-1 dc kit (5V?)

ISO Regen

Amber Regen

microRendu (currently not in signal path as I'm going direct for the time being)

 

I also have Uptone's JS-2 and the famous LPS-1.  I am having a tough time figuring out the best use of all this inventory with LT3045s.  I have one box coming from tubelover2 (thursday) that is 5V so thought I'd use it on the JCAT card with a rail from the JS-2 (5V?).  Any hep would be appreciated.  Larry has helped me get this far, which believe me, is far (for my brain).

 

[ted_b]

2 minutes ago, elan120 said:

On a different note, from your list, I currently use LPS-1 on JCAT USB card, SU-1, and ISO-REGEN with very good result.

Three LPS-1s you mean, right?

[ted_b]

Yes Bob made a 5V lt3045 box for me and I received it a few days ago. Yes he goes by tubelover2 on USAudiomart. There are a few choice threads over there

 

i have zero issues with him. His box and cables are nice (have since gotten a 5v board from Chris/forehaven). Will report on them once all is in place

[ted_b]

22 minutes ago, TubeMan said:

today I replaced the incoming ceramic 47uf capacitors with a 1000uf ELNA Silmic on LT3045 1Ah,
and suddenly all dynamics were there, more 3d, more organic sound, better bass, more details
definitely sounds better,

 

 

What made you think those 47uf caps were the bottleneck?  Can I send all my LT3045 boards to you?? 

[ted_b]

I've had an interesting time with the LT3045s so far (thanks Larry, for the help).  They sound great on my SU-1 (5V driven from one rail of JS-2) and my USB card (5V driven from LPS-1) but this weekend when I added a 6V to the SU-1 in series, and when I added a 7.5V-to-6V (driven by other rail of JS-2) in series for my ISO Regen the magic went away.  I pulled those last two examples (ISO Regen one at a time), adjusted power supply ouput as needed, and the magic is back.  So none on IR, one 5V on SU-1 and one 5V on USB card. 

 

Did I not give them enough time (hours, then one full day) or am I hearing something anyone else has?  The magic I speak of is detail with timbre, and when it went away the whole thing got a little clinical, colder, less timbre/tonality, and just uninteresting.  Maybe I like distortion.......dunno.

[ted_b]

The Meanwell (for the LPS-1 powering the USB card) has its JS shunt tweak applied.  I will investigate any and all others.

[ted_b]

What have folks found as the best way to stabilize these LT3045 setups, especially when in series and/or have dc adapters hanging off them?  I have found more than once having these unprotected in the pc case or even hanging off power supplies they can come undone, even though I have been somewhat diligent with tightening down the screw terminals, etc.

 

 

Discussing with a few others I'm thinking bare PCB boards underneath, hot glued or something? 

[ted_b]

6 minutes ago, tapatrick said:

I have a bunch of these with an ISO Regen and Bluewave board in an aluminium case (see earlier posts) as I think it’s best to shield everything from emi/rfi. I’ve also got a dual in series pair for my switch in a small Hammond Alu case which is a good option for a pair of boards. Ends need drilling though for cables to go in. 

What kind(s) of case?  How do you get cables/connectors into each end?

[ted_b]

Larry, as I read it he tried both ways...before it (in series) and after it, and liked them better in series.

[ted_b]

4 minutes ago, Cornan said:

Yeah, I have already forgotten how many times that I wanted a KISS! ?

If you are looking for a KISS, then CA is the LAST place on earth you are going to find it.    (I could read about five meanings into that, and all of them would be right).