Replacing Rpsu with stock plate chokes?

[ssssly]

I am in the process of building a SEX amp with the MQ upgrade iron and C4S and have been looking for something to do with the stock plate chokes.

After reading this post http://www.bottlehead.com/smf/index.php/topic,160.0.html I am leaning toward replacing Rpsu with the stock plate chokes.

Is there any conceivable reason that this would be a bad idea?

 

[tbbenton]

Is there any conceivable reason that this would be a bad idea?

From my limited experience, I'd say watch your placement so you don't introduce hum.

 

[Dyna Saur]

The stock plate chokes have a somewhat higher DC resistance (around 768 ohms) than the stock Rpsu, but the slight voltage drop (around 4VDC) should not be a problem. Just finding space to mount them under teh chassis, after the upgrade may be a bit of a daunting task.  AS mentioned previously, just be careful that their placement doesn't introduce any unwanted inductively (magnetically) coupled hum problems. 

Or, use them (as I did) in a homebrew parallel feed small SET amp design.

/ed B in NC

 

[Paul Joppa]

Check the "Hammond choke" thread under Seduction for another application of those old SEX plate chokes....

 

[ssssly]

The shunt reg does sound like an interesting idea. However, I must say, designing it from scratch to fit the circuit is a bit above my knowledge level.

If someone would walk me through it I'd be more than happy to build it and report back how it sounds though

 

[Paul Birkeland]

The shunt regulator in the SEX circuit isn't the greatest idea, as the current headroom in the power transformer just isn't there.