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Is this "TEL" input just a normal balanced input?
Old 25th September 2019
Here for the gear

Is this "TEL" input just a normal balanced input?

I'm trying to connect some audio equipment at a bar, and I'm not sure how best to connect everything.

I have two sources:

1: Balanced output from a mixer which usually just carries signal from a DJ mixer.

2: Unbalanced output from a phone, which provides background music during the day.

I have two amps, a Lab Gruppen which powers indoor speakers, and a TOA A2240 mixer amp which I just rescued from the storage room, and powers two 8ohm outdoor speakers in parallel.

At the moment I have phone jack -> TOA aux input -> LAB input (unbalanced).

I'll have to change everything around on Friday and Saturday nights though so I can have Mixer -> LAB (balanced) -> TOA (unbal).

I noticed that the TOA has a TEL input though, specs are -10 dBV, 10kohms, balanced screw terminals, transformer isolated.

I was wondering if anyone can tell me if this input can accept any balanced connection or if there is something special about this "telephone" connection?

I would like to connect: Phone/Mixer -> switch -> LAB -> TOA (bal) so that people can operate the system easily without having to plug and unplug cables (they always stuff it up).

Here is a link to the TOA:

Old 25th September 2019
Lives for gear
Richard Crowley's Avatar
According to the manual, the "TEL" input is a balanced, transformer-isolated, consumer line-level (-10dBV) input.
It is unlikely that there is anything otherwise special about it, so it seems ideally suitable for interconnection to the other system.
Old 25th September 2019
Here for the gear

Thank you Richard, I appreciate it.

I'll build a new cable tonight and get it sorted tomorrow.
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