Headphones may be easily tested by wetting the two cord tips and bringing them forcibly together, while the headphones are over the ears. If a good click is heard, the headphones are in excellent shape and suitable for the purpose for which they are designed. if but a mediocre click is heard, their sensitivity has been greatly destroyed and it is advisable that a new pair be purchased, ‘he test is more sensitive than the common practice of connecting a battery across the terminals of the headphones, sitice the magnets may have their permeability destroyed by the large voltage which passes through them,
Permanent link to this item
Hononga pūmau ki tēnei tūemi
https://paperspast.natlib.govt.nz/periodicals/RADREC19280113.2.59
Bibliographic details
Ngā taipitopito pukapuka
Radio Record, Volume I, Issue 26, 13 January 1928, Page 14
Word count
Tapeke kupu
103Untitled Radio Record, Volume I, Issue 26, 13 January 1928, Page 14
Using this item
Te whakamahi i tēnei tūemi
See our copyright guide for information on how you may use this title.
Log in