Planar Speaker Asylum

Welcome! Need support, you got it. Or share your ideas and experiences.

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: Apogees and ethics - comments

Posted by josh358 on February 16, 2012 at 17:24:02:
While it's true that larger magnets increase electrical damping, air damping so predominates at the higher frequencies at which ribbons operate that I'm not sure how much of an effect electrical damping has, even with strong magnets. More on torsion and edge-gap distortion perhaps, since when that occurs the air is turbulent. But as I think about it, I'm not even sure if it has much of an effect there. Amplifier damping can be compromised by the crossover network, which would leave only self-damping from eddy currents. Since ribbon resonances are below the crossover point, the diaphragm could literally be left to twist in the wind. Another consideration is that the amplifier can only damp the ribbon as a whole. Since torsion is symmetrical, it may not be much affected by amplifier damping at all. Again, you're back to eddy currents. Which would however be stronger in a stronger B field.