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Adastra V50-VR 100V Volume Control, 50W Relay Fitted

£3399
RRP £3499
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Adastra V50-VR is a 100V line volume control rated at 50W, built for commercial and installed audio systems where you need to set levels zone by zone. It arrives complete with a plastic surface mount back box, so you have everything needed to fit it to a wall without sourcing extra parts. The ABS faceplate carries a matching plastic knob for a clean, tidy finish.

Attenuation runs in 10 steps: eight 3dB steps and two 6dB steps, giving you steady control from full volume down to off. Frequency response covers 35Hz to 20kHz, so the control sits well within the range of most 100V line speakers. The unit is intended for 100V line systems, which are the standard for distributed audio across shops, offices, schools and similar sites.

The key feature here is the 24V relay, rated at 50mA. This lets the attenuator bypass to full volume when triggered from a fire alarm panel, so voice alarm and evacuation messages play at full level regardless of where the local control is set. This is often a requirement for life safety systems. Assembled dimensions are 85 x 85 x 75mm including the back box, with a mounting depth of 47mm. That makes it straightforward to plan into a wall or surface installation alongside matching plates in the same range.

Specification
Attenuation 3dB per graduation
Frequency response 35Hz - 20kHz
Relay 24V, 50mA
Dimensions (assembled) 85mm x 85mm x 75mm (inc. back bo x )
Mounting depth 47mm
Downloads

Product Manual

Frequently Asked

What is the power rating of the V50-VR?

It is rated at 50W on a 100V line system, suitable for controlling the level of a zone of 100V speakers.

How does the fire alarm bypass work?

A built-in 24V, 50mA relay bypasses the attenuator to full volume when triggered from a fire alarm panel, so alarm messages always play at full level.

How many attenuation steps does it have?

There are 10 steps in total: eight 3dB steps and two 6dB steps, running from full volume down to off.

Does it come with a back box?

Yes. It is supplied complete with a plastic surface mount back box, plus an ABS faceplate and matching plastic knob.

What are the mounting dimensions?

Assembled it measures 85 x 85 x 75mm including the back box, with a mounting depth of 47mm.

What frequency range does it cover?

Frequency response is 35Hz to 20kHz, which suits typical 100V line speaker installations.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Adastra V50-VR is a 100V line volume control rated at 50W, built for commercial and installed audio systems where you need to set levels zone by zone. It arrives complete with a plastic surface mount back box, so you have everything needed to fit it to a wall without sourcing extra parts. The ABS faceplate carries a matching plastic knob for a clean, tidy finish.

    Attenuation runs in 10 steps: eight 3dB steps and two 6dB steps, giving you steady control from full volume down to off. Frequency response covers 35Hz to 20kHz, so the control sits well within the range of most 100V line speakers. The unit is intended for 100V line systems, which are the standard for distributed audio across shops, offices, schools and similar sites.

    The key feature here is the 24V relay, rated at 50mA. This lets the attenuator bypass to full volume when triggered from a fire alarm panel, so voice alarm and evacuation messages play at full level regardless of where the local control is set. This is often a requirement for life safety systems. Assembled dimensions are 85 x 85 x 75mm including the back box, with a mounting depth of 47mm. That makes it straightforward to plan into a wall or surface installation alongside matching plates in the same range.

    Specification
    Attenuation 3dB per graduation
    Frequency response 35Hz - 20kHz
    Relay 24V, 50mA
    Dimensions (assembled) 85mm x 85mm x 75mm (inc. back bo x )
    Mounting depth 47mm
    Downloads

    Product Manual

    Frequently Asked

    What is the power rating of the V50-VR?

    It is rated at 50W on a 100V line system, suitable for controlling the level of a zone of 100V speakers.

    How does the fire alarm bypass work?

    A built-in 24V, 50mA relay bypasses the attenuator to full volume when triggered from a fire alarm panel, so alarm messages always play at full level.

    How many attenuation steps does it have?

    There are 10 steps in total: eight 3dB steps and two 6dB steps, running from full volume down to off.

    Does it come with a back box?

    Yes. It is supplied complete with a plastic surface mount back box, plus an ABS faceplate and matching plastic knob.

    What are the mounting dimensions?

    Assembled it measures 85 x 85 x 75mm including the back box, with a mounting depth of 47mm.

    What frequency range does it cover?

    Frequency response is 35Hz to 20kHz, which suits typical 100V line speaker installations.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.