Aphex Systems Ltd. Model 228Page 16
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instruction Manual
Page 17Aphex Systems Ltd. Model 228
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8-channel audio interface
ance. Because of these developments, it is now no longer as critical to consider impedance when dealing with
interfacing pro line level equipment (impedance “matching” is mostly a requirement of the past).
TABLE 2
Table 2 is a comprehensive guide to line level interfacing. It shows simple block wiring diagrams that apply to all
types of audio connectors in use. Use Table 1 to match the contacts in Table 2 to the contacts on the connector
you intend to use. For the exact wiring of the connectors used for each Aphex product - use the diagrams in
the respective User’s Manuals.
A word on impedance and interfacing adapters: If you are connecting between two line level devices and
they have different connectors (example: 1/4” phone to XLR or vice-versa), you do not need to use an imped-
ance matching transformer. With very few exceptions you are strictly dealing with a difference in connector
types and should only use hard-wired adapters (or cables) for this situation.
Appendices
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