Modding SLO30 Question

[Mr. Willy]

Is this possible? How hard/difficult would it be to convert the SLO30 from using 5881s to 6550s?

 

[BackCrack]

If the SLO30 is B.A.D.'s version of the HR25, then I would say no if using the stock iron. The HR25 runs its 5881's at reduced plate voltage, and that voltage is transformer supplied. It's hard wired in. The operating plate voltage for a pair of 6550's are way different. So you'd have to (1) experiment with 6550's to find the reduced plate voltage sweet spot, and then (2) get the proper specs to a transformer maker and get the iron made.

But, I may be way off, which wouldn't be the first time.

 

[Mr. Willy]

If the SLO30 is B.A.D.'s version of the HR25, then I would say no if using the stock iron. The HR25 runs its 5881's at reduced plate voltage, and that voltage is transformer supplied. It's hard wired in. The operating plate voltage for a pair of 6550's are way different. So you'd have to (1) experiment with 6550's to find the reduced plate voltage sweet spot, and then (2) get the proper specs to a transformer maker and get the iron made.

But, I may be way off, which wouldn't be the first time.

Thanks for the reply! My tech knowledge on this is minimal, but that’s primarily what I was wondering, if the transformers could handle it. I think if they could handle it, it’d just be a matter of changing out some other minor parts.