Auxiliary (aux, phono, tape player, tuner), Æzzdr – Aiphone PM-30 User Manual
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Auxiliary (AUX, PHONO, TAPE PLAYER, TUNER)
An FM tuner or tape palyer may be connected to the TAPE/TUNER input.
In Addition
A remote microphone. Chime, Mixer, Preamplifier or other high level signal sources
may be connected to the AUX. Use sin^e or double conductor shielded cable.
From unbalanced type
output equipment
ÆZZDr
to AUX Input Terminal
From balanced type
output equipment
to AUX Input Terminal
Telephone:
A voice signal from the telephone system (600 ohm, balanced output) may be con
nected to the PHONE input. Use two conductor shielded cable.
from TELEPHONE system
to PHONE input terminal
8. OUTPUT CONNECTIONS:
Speaker Output
The amplifier may be used in conjunction with a speaker rated at 4, 8, 16 ohms or
with balanced output 25 Volt or 70 Volt constant-voltage speaker systems.
Low Impedance Speaker Output: 4, 8,16 ohm
The 4, 8, 16 ohms terminal is provided for the connection of a few large-output
speakers. This applies when constant-voltage speaker system is unnecessary or in case
the distance between the amplifier and the speakers is short enough (less than 200ft).
It is requested that the total speaker load impedance the correctly matched to the
output impedance of the amplifier for most efficient transfer of power.
Be sure that total impedance of speaker is above 4, 8 and 16 ohms. However, do not
raise amplifier output power ovér the endurable input power of speaker, otherwise
the speaker would be damaged.
25V and 70 Volts Speaker Ouput
When it is desired to operate the speaker from a distance of over 200' from the ampli
fier, it is recommended that line matching transformers be installed on the speaker
units to prevent excessive line losses.
This method of load matching known as the constant voltage distribution system
eliminates the calculation of load impedance and series-parallel speaker arrangements.
In this methodj all speakers are connected in parallel.
f
These constsant voltage outputs are most convenient for distribution of power when
a number of speakers are installed. Each speaker must have 25 volt or 70 volt line
transformer with a tap that gives the power desired for that speaker. The total number
of power settings for all speakers should be equal to the amplifier power rating or
less.
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