ACM-940 - Headphones Cyber Acoustics - Free user manual and instructions
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| Product Type | Over-ear wired headset with microphone |
| Brand | Cyber Acoustics |
| Model | ACM-940 |
| Connectivity | 3.5mm audio jacks (headphone and microphone) |
| Headband Design | Adjustable padded headband for a secure fit |
| Ear Cushion Material | Soft foam-filled leatherette cushions |
| Microphone Type | Flexible boom microphone with noise reduction |
| Microphone Positioning | Adjustable to any position for optimal voice pickup |
| Frequency Response | 20 Hz - 20 kHz |
| Impedance | 32 ohms |
| Sensitivity | 103 dB |
| Cable Length | 6 feet (1.8 meters) |
| Compatibility | Devices with 3.5mm headphone and microphone ports |
| Power Source | No external power required; powered via audio jack |
| Weight | 0.5 lbs (230 grams) |
| Dimensions | 7.5 x 6.5 x 3.5 inches |
| Control Features | In-line volume control for convenience |
| Care Instructions | Wipe with a dry soft cloth; do not use harsh chemicals |
| Safety Warning | Limit listening volume to protect your hearing |
| Spare Parts Availability | Replacement ear cushions and cable available |
| General Information | Designed for multimedia, online classes, and office use |
Frequently Asked Questions - ACM-940 Cyber Acoustics
How do I connect the ACM-940 headset to my computer?
Plug the green jack into the headphone port and the pink jack into the microphone port. If your computer has a single combo jack, you may need a splitter cable (sold separately).
How do I use the microphone?
The boom microphone is flexible. Position it close to your mouth (about 1 inch away) and adjust the bend for optimal voice pickup. The mic is omnidirectional and works automatically once connected.
The headset is not producing any sound. What should I do?
Check that the jacks are fully inserted into the correct ports. Confirm your device’s output volume is not muted and is set to at least 50%. Also ensure the inline volume control is turned up.
How do I adjust the headband for a comfortable fit?
Hold the ear cups and gently slide the headband up or down to match your head size. The headband has extendable sliders that click into place for a secure fit.
Why is my voice not being heard during calls?
Make sure the microphone is not muted and is positioned correctly. On your device, set the microphone as the default recording device and check the input level in sound settings.
Can I use this headset with a smartphone?
Yes, if your smartphone has a 3.5mm audio jack. Some modern phones require a USB-C to 3.5mm adapter. The headset works with both music and calls on compatible devices.
How do I clean and maintain the headset?
Use a dry, lint-free cloth to wipe the ear cushions, headband, and microphone. Do not use water or cleaning sprays, as they may damage the electronics. Store the headset in a cool, dry place.
What should I do if the ear cushions wear out?
Replacement ear cushions are available from Cyber Acoustics. Gently pull the old cushions off the ear cups and press the new ones into place until they snap securely.
Are spare parts available for this model?
Yes, you can purchase replacement ear cushions, cables, and ear pads directly from the manufacturer. Contact Cyber Acoustics support for ordering information.
What is the warranty information for the ACM-940?
Cyber Acoustics offers a 1-year limited warranty against defects in materials and workmanship. Keep your receipt and contact customer support for warranty claims.
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USER MANUAL ACM-940 Cyber Acoustics
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Product information
Brand : Cyber Acoustics
Model : ACM-940
Category : Headphones