![]() UNIT CONVERTORS NEW: SUPER MINIATURE EARPHONE FOR TRANSISTOR CIRCUITS Here is a really sensitive dynamic earphone of exceptionally fine quality. 1PR PRECISION /4% RESISTORS Manufactured by Electrothermal, we offer the following values: 100K. A must for every constructor and Ham ", consists of moving coil padded head- phones and "press to talk" microphone. COMPLETE HEADPHONE do MICROPHONE ASSEMBLY. Tannoy power mikes only Crystal mike 22/8. ![]() Throat magnetic 4/8: Throat carbon 3 8: No. Supplied free is a small transformer unit which steps impedance up to 4000 ohms. Each unit has a built -in miniature HI- FI transformer to ensure the finest music and voice reproduction. The soft rubber ear moulds give correct spacing 1 for optimum acoustic load. use high quality permanent magnetic speakers with regulated voice coil. ![]() units will extend the frequency range of your receiver to enable you to receive amateur. 2 Ìl PRACTICAL WIRELESS November, 1960 HI -FI HEADP HONES These miniature HI- FI phones R.F.
0 Comments
Leave a Reply. |