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1988-06-09
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Audio Connectors
Their Care and Feeding
The following inforamtion is 'freeware" and may be copied freely, however if
reproduced and distributed, no charge may be affixed for this information.
This disclaimer must appear with
all reproductions, in any medium, of this material.
(C) 1988 MFPS
The Phone Connector:
Originally used in telephone switchboard (Just like in the old
movies) the phone connector has expanded into many areas of the audio industry
and had mutated into a variety of configurations to suit the needs of the
industry.
The 1/4", 2 conductor phone plug is used for guitars, microphones, keyboards,
and other kinds of musical instrumanets, as well as interconnections between
signal processing equipment such as reverb units, digiatal delay lines etc...
As any guitarist will tell you, the phone connector is no problem except for
the fact that is tends to fall out of its socket unless elaborate measures are
taken to keep all mechanical stress away from it. A company callled Neutrik
has solved this problem to a degree be making a LOCKING version of the phone
jack that works with any 1/4" pjhone plug. These are a vailible from a company
called Bi-Tronics, in Tuckahoe NY (800) 522-7377 (NYS 212 585-1645).
The problem with these locking connectors is that they are bulky and won't fit
into a some equipment and they are expensive.
The phone connector had several variations, the first of which is the STEREO
version, also know as the TIP-RING-SLEEVE style. In this style the TIP is used
for the RIGHT signal, the SLEEVE is the LEFT signal, and the SLEEVE is the
Sheild.
With the creation of miniature electronics, the phone connector became too big
for practical use. Several reduced sizes were created. The all share the same
wiring protocol (TIP- Signal SLEEVE- Shield) and the only difference between
them being the size.
1/4" Standard Size
1/8" Mini-Phone
3/32" Sub-Mini Phone
-------------------------------
The RCA Connector
The RCA connector had been in use for decades- you'll find them
on old tube radios and ancient turntables. It is a simple, but effective
connector. The signal is in the center conductor, the sheild is the outside
connection. There are virtually no variations in the styles of the RCA
connector, with the exception of heavy duty construction and some makers who
produce gold-plated RCA connectors.
The RCA Connector also goes under the name of PHONO connector.
This information has been extracted from
"Demystifying Connections"
For a copy of the full text, which includes diagrams and drawings,
send $4.50, check or money order payable to Marty Focazio
(US Funds Please!) to:
Connection
86 Carnation Rd.
Levittown, New York
11756