joepete77":2hodx9uj said:
MississippiMetal":2hodx9uj said:
Kapo_Polenton":2hodx9uj said:
Ok I got there.... 1750$ for a 50 watt head. I suppose for a PTP amp this is probably not that bad an idea though who knows how he specs his transformers and components.. IF a kit runs 1k then for the labour and "secret" sauce, I suppose it isn't that bad if you buy "direct"
That's just it. He doesn't spec his transformers.He wouldn't begin to know how. He uses off-the-shelf stuff and just blindly slaps it together. He's building a "20 watt" amp for a guy on the Marshall Forum using ClassicTone transformers spec'd for Marshall 18 watt clones. How he expects to squeeze 20 watts RMS out of an 18w OT and PT is beyond me.
i think with Marshall's the 18 watt and 20 use same trannies its just that the 20 watt is Ss rectified which gives it a few more watts then the tube rectified 18. Most guys in this business believe it or not are not engineers, they just have a passion for this stuff and a good ear and a lot of trial and error.
Even if they do use the same transformers, he's just guessing. I'm betting he hasn't drawn composite load lines for the power section. I'm betting he doesn't own an oscilloscope, signal generator or THD meter. Now is all of this crucial? No. Not really. He can still build an amp and make it sound good. But why market it at 20 watts if he hasn't measured it? How long before someone official takes notice that he's building and selling semi-production electronic devices with no oversight to RoHS integrity or rated power consumption?
For the record I'm not bashing ClassicTone transformers. I think they're fantastic transformers and have used them numerous times.