Quad 57 or 63 with Gradients

Hey Duke,
Great. You know I did that in the olden days, exactly as you have said now and I thought I was the only one who had thought that one up..... Just goes to show......
Cheers,

Duke,
Thanks for the tip and I will try this with my 57s. Just one question: Would you need a resistor in series with that capacitor and, if so, what value would you recommend? I'm thinking that the Quads are more than 8 ohms over some of their range. Thanks!

Cleo, I used a potentiometer in series until I had the sound just right, measured the resistance and then soldered in a resistor of the same value, if I remember right.

Detlof, very cool! It sounds like you probably came up with it before I did. I first tried the Quad tweeter tweek around 2000 or so, I think; it was after I got my first SoundLabs. I think Martin Logan later used a rear-firing tweeter on some of their smaller electrostats, like the Clarity.

Cleopatra52, you might need a resistor with some tweeters and not with others. I'd suggest getting a small assortment like maybe two each of 2, 4, and maybe 6 ohms. Sand-cast resistors are pretty cheap so that wouldn't push the price up by much.

Note that as you increase the impedance of the load that the capacitor sees by adding series resistance, the crossover point will move downward. So you might want to get an assortment of several smaller capacitors (which can be paralleled to give a larger value if called for). These won't be very expensive either as long as you go with something reasonable like Solens or Daytons.

Duke

Thanks Duke!!!