Heyboer Vibrolux / D-Lite PT question

[Colossal]

I have a Headstrong Lil King S back on the bench again for another small mod. It appears to have the exact same PT as found in the D-Lite 44 (Heyboer HTS-8816EX).

So for guys with D-Lites, can you comment on how hot that PT runs? Comfortably warm to the touch or smokin' hot?

Thanks in advance.

[ToneMerc]

IIRC, there are two versions of these. The first one was 200mA on the HT/6A filament and the latter are 350mA/6.5A I believe. On my 50W D'lite I had an HTS-8816 custom wound and I believe I would it's wound at 250mA @ 355V, It runs very cool.

If it's warm, you must have the lighter version.

TM

[Colossal]

Thanks very much TM, I greatly appreciate the reply.

I can't be certain the PT in the Headstrong is the very same (Heyboer) as the D-Lite but they look virtually identical (the Headstrong is running dual 6L6). The reason I ask is that the PT in the Headstrong runs really hot; much too hot for my comfort level. The amp runs, is biased, and sounds fine but the owner and I are are fairly convinced that the significant increase in chassis temperature after the amp has been on for a while is really changing the sound of the (150M) caps, and not for the better.

I'm swapping that PT out with another Vibrolux equivalent and will see how it runs. I just wanted to see if anyone else had Heyboer PTs that ran really hot. The amp had some seriously rough handling by UPS so I am concerned that the PT may have been dealt a blow (hence the heat) but has not yet failed. I had to replace a caved in power switch. Everything else in the amp checks out however (voltages, no shorts).

The PT in question is definitely a Vibrolux clone and is running 345-0-345.

[ToneMerc]

If it's a straight HB Vibrolux clone, I think they are only around 180-190mA.

TM