• New

Biquad Alonano

5 Items

Hybrid and portable telephone interface for use in external transmissions, in radio and television studios.

Circuit similar to all other ALO models and does not require power from the electrical network, which further facilitates its use and mobility

It has RFI filters on its telephone line input and on audio inputs and outputs, avoiding electromagnetic interference.
It has protection against electric shock from telephone lines, which protects the equipment.
It works on conventional telephone lines or PABX extensions with variations between 20 and 50V, with a minimum current of 20mA.
The balanced audio inputs and outputs with XLR connectors, isolated by transformers, guarantee high quality and noise immunity, providing clean and clear audio.
It has audio input gain control on the rear panel.

The hybrid circuit (2-in-4-wire transformation) is fully electronic and active, with a setting for echo cancellation that provides isolation around 50dB at 1KHz.
On the front panel, the equipment features an ON / OFF switch that answers the phone call, a call indicator LED, which is active when the equipment is in operation, a volume control for returning to the listener and a control for output volume. audio to the mixer.
Very versatile, ALO NANO is the ideal equipment to carry out external transmissions through the POTS telephone line, with great quality and efficiency.
Also to be used in broadcast and recording studios, to extract and insert quality audio on the phone line.
Its cabinet is finished to a high standard, with brushed stainless steel panel.


    Type: standard telephone line input;
    Connector: RJ-11 (6p4) female;
    Characteristic impedance: 600 O;
    It works with voltages between 20 and 50 V from the central power supply (accepts PABX).

* For perfect equipment operation, it is desirable for the control panel to supply 50 mA of current.

** The minimum working current is 20 mA.


    Type: telephone line output to connect a conventional telephone device;
    Connector: RJ-11 (6p4) female;
    Characteristic impedance: 600 O;
    Mechanically switched output, when the equipment does not work, the phone output is an extension of the input. When the equipment starts working, this output is deactivated.

Audio input (return to listener)

    Balanced mono type, magnetically isolated by high quality transformer;
    Impedance:> 10 kO;
    Connector: XLR Female;
    Gain Control: The gain adjustment on the rear panel allows input signals from - 10 to + 4dBu.

* In addition to adjusting the working gain, the equipment makes available to the listener the volume adjustment on the front panel, which can be adjusted from -∞ to 0dB in relation
with the audio input level.

Audio output

    Balanced mono type, magnetically isolated by high quality transformer;
    Impedance: <150 O;
    Connector: XLR Male;
    Gain control: - at 0dB. The nominal output level is 0dBu, but it depends on the quality of the connection.

Hybrid Circuit

    Type: Fully electronic without the use of transformers. The transformation of 2 to 4 cables is carried out by means of an integrated circuit specifically for this purpose;
    Echo Cancellation: Adjustable on the rear panel depends on the electrical characteristics of the telephone line.
    Lightning protection that prevents the equipment from burning.

* In the laboratory, the achieved cancellation was 56 dB at 1 kHz;

** Good product protection is essential for protection to work properly.


    If the telephone line, for any reason, is outside the standards determined by Anatel, the operation of the equipment will be compromised

NCM: 8517.18.99

Dimensions (reduced cabinet - WxHxD):
- 120mm x 43mm x 110mm;
- 4.7 "x 1.7" x 4.3 "in .;

Weight :
- 0.40 kg without packaging;
- 0.55 Kg with packaging.

- 0.0016


5 Items