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

Six Altec 414Zs ... Odd Resistance Readings?

Posted by Jim Hodgson on March 5, 2017 at 10:49:04:
I just pulled six Altec 414Zs out of my storage facility to use in a new project. I took resistance readings with a multimeter of all six drivers, and I came up with some odd results -- I think?

Four of these drivers came from a pair of Altec Carmels. All four of them measure 5.8 ohms.

Two of these drivers came from a pair of Altec Sevilles. Both of them measure 11.6 ohms.

All six of these drivers appear identical, with gold frames and stickers indicating "IMPEDANCE 16 OHMS.")

I'm wondering why the Carmel-origin 414Zs measure so low? And is it just a coincidence that the Seville-origin 414Zs measure exactly twice the resistance of the Carmel-origin 414Zs? (Note that the Carmels utilized two 414Zs per cabinet. Could this explain these results?)

As I need just two for my project, I'm wondering which two to select. They'll be mated with 1" Altec compression drivers (originally from the Carmels) that measure 8.8 ohms.

Thanks!