Atlas Sound E408-250
AtlasIED E408-250 Plate Mounted 250W Attenuator User Manual
Brand: Atlas Sound
1. Produktua amaitu daview
The AtlasIED E408-250 is a plate-mounted attenuator specifically designed for precise level control in masking and sound reinforcement systems. It features a 10-position, non-shorting rotary switch that allows for fine-tuning of audio levels. Each step of the rotary switch provides an attenuation rate of 1.5 dB, offering granular control over the sound output.

1. irudia: Aurrealdea view of the AtlasIED E408-250 attenuator, showing the rotary knob and numbered dial on a brushed metal plate.
2. Konfigurazioa eta instalazioa
Proper installation is crucial for the optimal performance of the E408-250 attenuator. This device is designed for plate mounting, typically into a standard electrical box or similar enclosure.
2.1 Muntaketa
- Ensure the mounting surface is flat and secure.
- Align the attenuator plate with the mounting holes of the electrical box or bracket.
- Secure the plate using appropriate screws (not included). Do not overtighten.
2.2 Kableatutako konexioak
The E408-250 attenuator requires connection to your sound system's speaker lines. Refer to the wiring diagram below and on the unit itself for correct polarity and connection points. It is recommended to consult a qualified audio technician for installation if you are unfamiliar with audio wiring.

2. Irudia: Atzealdea view of the attenuator, illustrating the transformer and the green terminal block where speaker wires are connected.
The attenuator typically connects in series with the speaker line. Ensure power to the amplifier is off before making any connections to prevent damage to the equipment or injury.
3. Funtzionamendu-argibideak
The AtlasIED E408-250 features a simple rotary knob for adjusting the audio level. The knob has 10 distinct positions, labeled from 0 to 10, providing precise control over the attenuation.
- Adjusting Level: Rotate the knob clockwise to increase the sound level (less attenuation) and counter-clockwise to decrease the sound level (more attenuation).
- Attenuation Rate: Each step of the rotary switch provides an attenuation of 1.5 dB. This allows for fine adjustments to achieve the desired sound level in your environment.
- Non-Shorting Design: The switch is designed to be non-shorting, meaning it will not create a short circuit when transitioning between positions.
- No Stop: The rotary switch does not have a physical stop at position 0 or 10, allowing for continuous rotation. However, the attenuation range is defined by the 0-10 scale.

3. irudia: Angeludun view of the attenuator, highlighting the rotary knob and the numbered faceplate for level adjustment.
4. Mantentzea
The AtlasIED E408-250 attenuator is designed for long-term, reliable operation with minimal maintenance. Follow these guidelines to ensure its longevity:
- Garbiketa: Use a soft, dry cloth to wipe the surface of the attenuator plate. Avoid abrasive cleaners, solvents, or excessive moisture, which can damage the finish or internal components.
- Ikuskapena: Periodically inspect the wiring connections to ensure they are secure and free from corrosion.
- Ingurumena: Ensure the attenuator is installed in a dry environment, away from direct sunlight, extreme temperatures, and high humidity.
5. Arazoak
If you experience issues with your AtlasIED E408-250 attenuator, consider the following common troubleshooting steps:
- Soinurik ez edo soinu baxua:
- Egiaztatu kableatu-konexio guztiak ondo finkatuta daudela eta behar bezala amaituta daudela ziurtatzeko.
- Verify that the attenuator knob is not set to '0' (maximum attenuation).
- Ziurtatu amplifier connected to the attenuator is powered on and functioning correctly.
- Confirm that the speakers are properly connected and operational.
- Etengabeko soinua:
- Begiratu kableatua konexio solte edo isolamendu kalteturik dagoen ikusteko.
- Ensure the attenuator knob is clean and free of debris that might interfere with its contact points.
- Soinu distortsionatua:
- Verify that the attenuator is rated for the power output of your amplifier (E408-250 is 250W). Overpowering can cause distortion or damage.
- Check other components in the audio chain (amplifier, speakers) for issues.
If the problem persists after attempting these steps, contact Atlas Sound customer support or a qualified audio technician.
6. Zehaztapenak
| Ezaugarri | Xehetasuna |
|---|---|
| Eredua | E408-250 |
| Mota | Plate Mounted Attenuator |
| Potentzia Balorazioa | 250W |
| Attenuation Steps | 10-position, non-shorting rotary switch |
| Attenuation Rate per Step | 1.5 dB |
| Elementuaren pisua | 1.75 libra (0.79 kg) |
| Produktuaren neurriak | 5.05 x 5 x 4.1 hazbete (12.83 x 12.7 x 10.41 cm) |
| ASIN | B07WS6RGCQ |
| Eskuragarri dagoen lehen data | 9ko apirilaren 2019a |
7. Bermea eta Laguntza
For specific warranty information regarding your AtlasIED E408-250 attenuator, please refer to the documentation provided with your purchase or visit the official Atlas Sound webgunea. Bermearen baldintzak alda daitezke.
For technical support, product inquiries, or service, please contact Atlas Sound directly:
- Fabrikatzailea: Atlas soinua
- Webgunea: www.atlassound.com (Note: This is a general example link, please verify the actual support URL.)
- Harremanetarako informazioa: Kontsultatu fabrikatzailearen website for the most current contact details, including phone numbers and email addresses for customer service.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.