[m17xr2b]

Doesn't make sense, the stock crack runs at 30W and it's not anywhere near 105VA for spec. My 2A3 amp runs at 100VA. Are you sure it's the crack you're thinking of?

 

[audiowize]

The Crack transformer is also in the SEX amp, and that's the clue to the capacity of the HV winding. From the original SEX amp and Crack 1.0, that indicates a high voltage winding capacity of 72VA and a LV winding capacity of 22VA, so I guess it's only 94VA. This is to keep the transformer cool enough to touch without harm, but the materials undoubtedly would tolerate more heat. The Crack transformer can power a 2A3 monoblock quite easily.

 

[m17xr2b]

That's not really fair, you'll need two transformers for a stereo 2A3 amp. 72VA HV...winding, are you sure? I've already been accused of intellectual property revealing so I can't give out the full numbers but it's closer to 15VA. As confirmed on the BH forum there's around 70mA of total current.
The transformer I had was the original 1.0 for 240V and it got pretty warm to hot. Not that that's an issue.

 

[audiowize]

I sure hope the winding isn't 15VA, the Crack amp draws more than 30VA from that winding; the SEX amp draws more.

AC and DC current are not the same. The transformer only cares about AC current.

 

[Toad_of_Toad_Hall]

.

 

[Toad_of_Toad_Hall]

.

 

[audiowize]

I don't see any words of encouragement there, that seems to be your addition to the conversation.

 

[Toad_of_Toad_Hall]

.

 

[audiowize]

Not sure what you mean.

Encouragement would be saying something like "go ahead and do it". The statement that there are many mistakes in the clones is some evidence that there isn't approval on that end. I don't see any encouragement in anything you've posted from that statement. The statement also talks about modifying kits, not copying them.

I read that more as "it happens, and we don't encourage it, but we aren't filing lawsuits every time someone does something crappy". Being cranky toward your customers is a good way to go out of business.

You never know, M17 may have even asked for permission from Doc B.

 

[Toad_of_Toad_Hall]

A full and unequivocal apology is due to @m17xr2b . Enjoy your amp.

Sometimes grey areas are best left grey.

 

[bequietjk]

Does anyone know the conductor material used in the Crack cord? Is it solid or stranded silver?

 

[audiowize]

Does anyone know the conductor material used in the Crack cord? Is it solid or stranded silver?

Solid core copper. If it appears to be silver, it is tinned to prevent the copper from oxidation, which is not at all abnormal and will allow the wire to be reworked easily at a later point.

Stranded wire should not be used for these purposes.

 

[bequietjk]

@audiowize in the *power cord?

 

[audiowize]

Most IEC power cords will be stranded copper with a PVC jacket.

 

[attmci]

The Crack transformer is also in the SEX amp, and that's the clue to the capacity of the HV winding. From the original SEX amp and Crack 1.0, that indicates a high voltage winding capacity of 72VA and a LV winding capacity of 22VA, so I guess it's only 94VA. This is to keep the transformer cool enough to touch without harm, but the materials undoubtedly would tolerate more heat. The Crack transformer can power a 2A3 monoblock quite easily.

The Bottlehead transformer is cool for it's size, but could also be the bottleneck....