One other note, even if you don 't use the optional class A buffer the output impedance at the balanced outputs is pretty low. Something like 150 Ohms. Many people will elect to go this route to drive power amplifiers as even a 10K load would work just fine, in fact the only effect of the load would be to very slightly attenuate the signal and of course change the corner of the high pass.
Russ, out of curiosity, what do you use for your 'reference' balanced power amp? A Sympatico or some other custom design?
That would be nice. Even with 20 watts it can drive many full range, high efficiency speakers.
This was a temporary error. I am using the IVY page as a template for the Legato page and was not done editing it.
For those who have ordered an IVY but are thinking they want a Legato instead, I will be adding an option to the Legato page for "Swap my IVY for a Legato". If you select this option, I will ship you a Legato instead of IVY and refund the price difference.
At this point, the only think holding up Legato sales is measuring the total kit weight for automated shipping cost calculations.
I hope to have it all ready to order tonight.
Transformer coupling
If one were to transformer couple the output of the Legato (balanced to balanced) one could likely omit the output caps, and maybe even the filter circuit caps (considering output transformer bandwidth ~150 kHz), is my thinking correct here?
Looking forward to using the Legato, thanks!
If one were to transformer couple the output of the Legato (balanced to balanced) one could likely omit the output caps, and maybe even the filter circuit caps (considering output transformer bandwidth ~150 kHz), is my thinking correct here?
Looking forward to using the Legato, thanks!
Sure, it should work fine, but I have not tried it. One could also do such a thing balanced to SE.
Cheers!
Russ
Russ,
Like barrows, I too am keen on experimenting with the Legato. I know it is still early days, but when you get some time, could you please post details (either in the forum or as a manual) on which components to omit to remove the LPF, buffer, output caps etc..
I have ordered my Legato too
Like barrows, I too am keen on experimenting with the Legato. I know it is still early days, but when you get some time, could you please post details (either in the forum or as a manual) on which components to omit to remove the LPF, buffer, output caps etc..
I have ordered my Legato too
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The legato requires a bipolar supply (positive and negative rail voltages), so the regular Placid will not work for it.