Is it because of the inductor or trying to match it to the tweeter or ....???
Announcement
Collapse
No announcement yet.
What causes an 8 ohm midbass driver operate like a 4 ohm in a speaker?
Collapse
X
-
I think I know what you are asking. This explains things better than I can -
https://www.sites.google.com/site/un...iverimpedancesCo-conspirator in the development of the "CR Gnarly Fidelity Reduction Unit" - Registered Trademark, Patent Pending.
Comment
-
Originally posted by tom_s View PostI think I know what you are asking. This explains things better than I can -
https://www.sites.google.com/site/un...iverimpedances
The tweeter in the Amiga is rated at 4 ohm, and the midbass is rated at 8 ohm and stays above 7 ohm within its passband.
But the Amiga measures at 4 ohm according to Paul. I'm just curious what would be the main factor for the lower overall impedence rating.
4 ohm is not ideal for my tube amp. It makes me wonder if I could replace the midbass or alter the xover to achieve a higher impedence.
Comment
-
In Tom's link "When loudspeaker manufacturers give you a "Nominal Impedance" of a speaker, the number is incredibly misleading and a wild guess at best! The actual impedance of the speaker is really all over the map (depending on the frequency), and most likely dips below the quoted "nominal impedance" at certain frequencies. ...". Other than planars and some exotics, flat .imp is rare. Have you ever measured the .imp of a speaker?
Comment
-
"4 ohms" is a very general term, used to advise users to how difficult the speaker will be to drive. Here is the Amigas' Impedance curve. Note it varies greatly depending on frequency. This is in Paul C.'s writeup.
Sometimes, designers include an "impedance flattening" optional add on for the crossover, to help those with tube amps.
Comment
-
I built these for my Dynakitparts ST35 tube amp. Note the impedance normalization addon. I made mine switchable.
http://speakerdesignworks.com/Singularity_4.html
Comment
-
Sensitivity, imp, and phase angle all effect how hard a speaker is to drive.
Comment
-
Comment
-
Originally posted by audiojerry View PostIs it because of the inductor or trying to match it to the tweeter or ....???
Comment
Comment