Apart Audio E‑VOL120 Volume Control
The Apart E‑VOL120 is a professional‑grade 100 V volume control designed for commercial, educational, retail, and domestic installations requiring up to 120 W handling capacity. Intended for use by installers and system designers, it offers reliable performance along with safety and compliance features.
Overview
This volume control is designed for fixed installations where dependability and announcement override functions are essential. It is ideal for zones using background music, public address systems, or emergency voice alarms.
Key Benefits:
- Supports up to 120 W on 100 V lines -- suitable for mid‑sized audio zones
- 11‑step attenuation including an "off" setting -- enables precise control
- 24 V priority relay ensures emergency announcements override local settings
- Universal chassis fits Gira, Jung, and Euro plates for flush mounting
- Compact, durable ABS build with white epoxy finish for unobtrusive in-wall installation
Design and Build Quality
The E‑VOL120 features a robust euro‑module chassis measuring 80 × 80 × 50 mm and weighing approximately 0.3 kg. Its ABS construction with white finish integrates seamlessly into standard switch plates and back boxes (e.g., EMODON surface or EMODIN in‑wall). The rotary attenuator is designed for consistent and tactile control steps, even under frequent use.
Key Technologies and Features
- 11‑Step Attenuator + "0" Position -- Enables fine volume control including complete muting
- 24 V Priority Relay -- Mechanical relay ensures emergency messages bypass local volume settings
- Euroblock 6‑Pole Connections -- Reliable screw terminals support up to 2.5 mm² cable
- Universal Plate Integration -- Compatible with Gira, Jung, and Euro faceplates
- High‑Impedance 100 V Line -- Ideal for distributed audio, minimising signal loss
Specifications
Specification | Details |
Power Source | 100 V public address line |
Power Handling | 120 W |
Attenuation | 11 steps + Off |
Priority Input | 24 V DC relay (max 20 mA) |
Connectors | Euroblock, 6‑pole, ≤ 2.5 mm² |
Dimensions (H×W×D) | 80 × 80 × 50 mm |
Weight | ~ 0.30 kg |
Finish | White (flush mount) |
Mounting | Euro module, screw |
Performance and User Experience
In practical installations, professionals report precise and clean attenuation steps along with dependable switching. The priority relay ensures uninterrupted paging during emergencies -- an essential safety provision. Its compact size and compatibility with standard back boxes allow for straightforward and tidy installation. It's particularly well-suited to spaces requiring local control, while still allowing emergency override.
Q & A
- Q: Is it suitable for low‑impedance (Hi‑Fi) speakers?
A: No - the E‑VOL120 is specifically for 100 V lines, not 4-8 Ω low‑impedance systems.
- Q: Can one amplifier drive multiple E‑VOL120 units?
A: Yes, provided the total speaker load remains within the amplifier's capacity and follows the 100 V architecture.
- Q: What happens if the 24 V priority signal fails?
A: The volume control defaults to the local setting. If it fails in a closed state, emergency messages may not override.
- Q: Can I use this outdoors?
A: Only with an appropriate enclosure -- the unit is not weatherproof on its own.
- Q: Is the chassis compatible with UK flush boxes?
A: Yes - it supports standard EU/UK switch plate systems with the correct faceplates.