Anyone add power scaling to an amp?

[jzucker]

I'm wondering about adding power scaling to a Kingsley 50 ?

[Telerockr]

....eagerly awaiting info as well !

I have a JTM45 that would love some power scaled love :D

[loverocker]

For an example of an installation of an earlier version of PS (it's now easier) see - and hear MP3s - at: http://www.bruceclement.com/music/psk.htm

Power Scaling does exactly what it says. There are a few things it cannot do (e.g. speaker-volume non-linearities - same as attenuators). And of course, your valves last a LOT longer - quite important if you like your old Mullards :)

[jzucker]

Are you Bruce? If so, great job on the website. However, distorted tones aren't the problem I've had with power reduction. It's clean tones and slightly distorted tones. When you get the tones as thickly distorted as what you're playing in those clips, it could almost be coming from an amp modeler IMO.

I just want the scaling device to tone-down the overal volume. I guess a Weber Mass is more what I'm looking for. It also sounds like there were some serious restarts with the kit. I'm surprised it would be released without being properly tested.

[loverocker]

No, I'm not Bruce. :) I think he was one of the first to do a Super Lead implementation. It was tricky then, but it is now easier.

I do have a Power Scaled amp (a London Power Studio), which is how I know that it works. There are an increasing number of amp builders (commercial and hobbyists) who have tried Power Scaling (and VVR version discussed at www.sewatt.com (http://www.sewatt.com) and www.18watt.com (http://www.18watt.com)) and found it perfect.

I hear what you say about the clean-compression and just-breaking up tones, but PS does that, too. (It's just not what Bruce is into, I guess). It's becoming a popular option on 18W clones for this reason.

FWIW, I'm not an evangelist for Power Scaling. I have (and like) the MASS, too. That's a *far* simpler solution. :)

[mooreamps]

For an example of an installation of an earlier version of PS (it's now easier) see - and hear MP3s - at: http://www.bruceclement.com/music/psk.htm

Power Scaling does exactly what it says. There are a few things it cannot do (e.g. speaker-volume non-linearities - same as attenuators). And of course, your valves last a LOT longer - quite important if you like your old Mullards :)


Hi all,

I'm currently working on a design for a fixed bias amp, like the one shown. However, my brakes do not generate the amount of waste heat as generated by the FET based plate rail brakes. Thus, no heat sink, no fan power supply.

-g