John Curl's Blowtorch preamplifier part IV

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Yes, but I can use it with or without subs, for this experiment I've been using them full range without subs

If you have dsp capability on your subs it might be worth a try? You might find it ‘better’ 😀

Joking aside the window on the adjustment is so small (at least by ear) that maybe the visual aid is the ticket......if it’s even the same thing, but it sure sounds like it is.
 
Han's,

"Unfortunately I could not hear a difference"??

Why is that unfortunate? It's just a data point.

Jn

Unfortunately because I would have welcomed to hear a difference.
If corrosion would cause an obvious effect then ......
Call it just a data point if you like, but it doesn’t look promising.

And as a matter of fact, all ends where thoroughly cleaned and soldered, just to be sure that the contact surfaces were the same and of exactly the same quality.

Last but not least it is fair to say that I hear quite a difference with my regular speaker cables, maybe mains cable is too Lo-Fi.

But at least I tried something.

Hans
 
Hans, thank you for your input. You do have a grasp of physics. Now I think that I know WHY these devices are rated at 4A or less.
 

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Thank you for giving it a try.

May I ask for some more details, similar to things like George likes to know: e.g. What does the whole signal path consist of?

I’m almost hesitating to reply, because it’s completely over the top.
But here it is, I did the test with:

Jriver on PC
Bel Canto USB to ST fiber converter
ST Fiber
Bel Canto Dac 3.5
XLR Nordost Valhalla
Bruno Putzeys balanced preamp
XLR Nordost Valhalla
Mark Levinson 20.6 class A with new developed amp
MIT speaker cable
Quad ESL 63
 
Not that it matters, but at that moment in time the system was:

Elac discovery ds-s101g server/streamer/dac
Pangea rca out
Yamaha R-N803 YPAO integrated- Burhoe Acoustics/Blues (slightly modified)
Sonance sonamp 260- 2x10” precision power Sedona subs

Green Monster cable speaker wire (The Hulk edition) 😛
Ended up with Cardas 101
 
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