High Efficiency Speaker Asylum

Need speakers that can rock with just one watt? You found da place.

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

Ive had chance to hear lens implementaions from VMPS and Graham

Posted by Edp on April 12, 2024 at 13:20:17:
Appreciate the insight and explanation of the mechanisms involved.

Until you mentioned it I didn't think of horn lens like the JBL Hartsfield (2390 ?) relating to the examples of a lens applied to a direct radiator. Helps with grasping with mechanisms involved.

In his last few years Brian Cheney of VMPS was committing a number of his line source units with a lens. I never fully understood the mechanism he was working on, but the units he applied this method definitely "worked" as there was a difference with over without lens
Left no lens. Right with lens
In the link added for Graham Audio, I'm not sure, but it appears the vintage approach of slotting bass units is more of a directivity influence than what you describe for the lens

It's always an eye opener when I'm confronted with a design that "violates conventional guidelines" but actually works better.
Possibly one day I'll stumble into an audio room and the Paraline can perform its eye opener. Did that with the Unity way back machine.