Celestion TF0510 5" Professional Midrange Speaker 30W
Celestion TF0510 5" Professional Midrange Speaker 30W is rated out of 5 by 1.
Rated 2 out of 5
by Doctor Cosmos
from Questionable specificationsThe speaker design I am working with requires matching the driver specifications with the electrical and physical characteristics of the overall system. Therefore, I must have accurate information about the drivers before ordering to ensure they will work with my design. Reading the General Specifications obtained from the Parts-Express website and apparently published by Celestion, a key parameter didn't match up. Qts is published to be 0.46 and after receiving the driver and performing the Free Air Measurements test using my DATS (part #: 390-806), the measured Qts came out around 0.65. Aiming for a Qtc of 0.58, I certainly cannot use this driver for my design. True, Qts usually trends downward after use, but only on the order of one to five percent with normal use, not >30%. For this reason, I returned these drivers. Otherwise, the driver looks very good and many of the other parameters measured fairly close to the published specifications (Le: 0.31mH, Fs: 96Hz, etc.).
Date published: 2013-04-09