SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: SET active versus passive biamplification

Posted by Paul Joppa on July 5, 2011 at 21:13:22:
You will find many opinions on this question. My best advice is to seek the specific experience behind the opinion and ignore the conclusions drawn from that experience - draw your own conclusions if you must. In too many cases you can't get back to the experience by itself, which is unfortunate but completely human. Theory is close to useless, except to provide a comfortable reason to believe you own prejudices. I say that even though I am a theoretician myself ... :^)

My experience has been that high order line level crossovers sound better than passive speaker level crossovers, and that low-order speaker level crossovers sound better than high order ones. I have little direct experience with low order line level crossovers.

For what it's worth, active crossovers are usually feedback circuits, not simple gain stages following a passive network. Since one of the virtues of SETs is their lack of feedback, I am suspicious of active circuits - but as I said, that's theory and therefor nearly useless.

Incidentally, danlaudionut says "Caps are bad but inductors are lethal." There are others who say "Caps are bad, inductors are good." I'm not choosing, since I don't have a large enough base of direct personal experience - I'm just reporting the range of opinions I've seen.