Vintage Asylum

Classic gear from yesteryear; vintage audio standing the test of time.

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: Cap coupling vs. direct coupling on vintage SS receivers

Posted by truep on July 18, 2005 at 09:31:32:
Generally direct coupled amps have a DC designation meaning that they can amplify a direct current signal (like the crown amps with the DC designation)
Damping factor is related to the output impedence. The lower the impedence, the higher the damping factor. Solid state amps usually have very high damping factors and tube amps have lower damping facrors. What it means is that when the speaker sees the load a higher damping factor (lower impedence), the speaker's back emf (voltage generated by the voice coil/magnet acting as a generator) will be damped(shorted) resulting in better control of the speaker's tendency to continue to resonate. You can sometimes demonstraye this by gently pushing on a woofer that is disconected and then comparing the forces when it has the input shorted.(be VERY carefull if you try this!}