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

bypassing caps

Posted by Ralph on June 26, 2012 at 10:38:10:
what you just discovered has been known for a long time, although not by everyone in the audio community! If you bypass a coupling cap, you will get a smeared result. If you don't hear it then your system has resolution problems. With coupling caps, you just have to give it your best shot.
The problem has to do with the specs of the cap- series resistance and dissipation factor being two of the bigger players. Smaller caps tend to be better in these regards and can pass the signal in a 'faster' (that's how our ears hear it...) way. It is something that is measurable as well as audible- 'slow' caps will have less bandwidth although you might have to go quite high to see where the differences are.
Paper and oil caps are actually not bad in this regard and is why they are still around in audio. Teflon caps are good in this way too (but tend to be less prone to electrical leakage issues; they can be easily damaged with minor handling). The next best is polystyrene, which as some audio frequencies *can* be better than Teflon...