Sennheiser SP 20
Sennheiser SP 20 Mobile Speakerphone User Manual
Model: SP 20 (506049)
Introduction
The Sennheiser SP 20 is a compact, portable speakerphone designed for Unified Communications (UC) business professionals. It facilitates personal and small group conference calls via PC, mobile phone, or tablet. Its lightweight, slim profile and superior audio performance enhance communication efficiency and collaboration. The device also includes a dedicated music setting for audio playback.
What's in the Box
- Speakerphone with USB cable and 3.5 mm jack cable
- Carry case (pouch)
- Safety guide
- Quick guide

Image: Sennheiser SP 20 speakerphone and its accessories, including a carry case, quick guide, and safety guide.
Setup
Connecting to a PC/Laptop (Plug and Play)
- Locate the integrated USB cable on the SP 20 speakerphone.
- Plug the USB connector into an available USB port on your PC or laptop.
- The device will automatically connect and be recognized by your computer. No additional drivers are typically required.
Connecting to a Mobile Phone/Tablet (3.5mm Jack)
- Locate the integrated 3.5 mm jack cable on the SP 20 speakerphone.
- Plug the 3.5 mm jack into the headphone/audio port of your mobile phone or tablet.
- The device will be ready for use.

Image: The Sennheiser SP 20 speakerphone with its integrated USB and 3.5mm jack cables, illustrating its versatile connectivity options.
Operating the Speakerphone
Controls Overview
The SP 20 features intuitive touch controls located on its surface for easy management of calls and audio settings.
- Volume Control: Use the '+' and '-' buttons to adjust the speaker volume.
- Mute Microphone: Press the microphone icon button in the center to mute/unmute your microphone. The indicator lights will turn red when muted.
- Call Management: Use the green phone icon to answer a call and the red phone icon to end a call.

Image: The top surface of the Sennheiser SP 20 speakerphone, highlighting the touch-sensitive controls for managing audio and calls.
Multi-functionality
The SP 20 allows for seamless merging of PC/softphone and mobile calls into one conference, providing flexibility across devices.
Dedicated Music Setting
For relaxing between calls, the speakerphone includes a dedicated sound-enhancement profile optimized for music playback.
Audio Performance
The Sennheiser SP 20 is engineered for superior audio quality, ensuring clear and natural conversations.
- EPOS Voice™ Technology: Provides a clear and natural listening experience.
- Echo and Noise-Cancelling Microphones: Features two echo and noise-cancelling microphones to minimize background distractions and enhance voice clarity for all participants.
- Omnidirectional Microphone: Designed for enhanced sound detection in small huddle meetings, certified for groups of 6-8 people.
- Duplex Performance: Allows for simultaneous speaking and listening, facilitating natural conversation flow.
Video: This video demonstrates the seamless collaboration features and audio quality of the EPOS EXPAND 30 Series Speakerphones, highlighting their suitability for professional use.
Battery Life and Charging
The Sennheiser SP 20 is equipped with a Lithium Polymer battery, offering extended talk time for prolonged use.
- Extended Talk-time: Enjoy up to 20 hours of talk time on a single charge.
- Quick Charging: The device can be fully charged in approximately 2 hours and 30 minutes.

Image: The Sennheiser SP 20 speakerphone connected to a laptop via its USB cable, illustrating the charging process and highlighting its efficient battery life.
Maintenance
To ensure the longevity and optimal performance of your Sennheiser SP 20 speakerphone, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Avoid using harsh chemicals or abrasive materials.
- Storage: When not in use, store the speakerphone in its provided carry case to protect it from dust and physical damage.
- Cable Care: Handle the integrated USB and 3.5mm jack cables with care to prevent fraying or damage. Avoid sharp bends or excessive pulling.
- Temperature: Avoid exposing the device to extreme temperatures or direct sunlight.
Troubleshooting
If you encounter issues with your Sennheiser SP 20, refer to the following common solutions:
- No Sound/Microphone Not Working:
- Ensure the USB or 3.5mm jack cable is securely connected to your device.
- Check your computer's audio settings to confirm the SP 20 is selected as the input/output device.
- Verify that the microphone is not muted on the speakerphone (red indicator lights).
- Adjust the volume using the '+' button on the speakerphone.
- Poor Audio Quality:
- Ensure the speakerphone is placed on a stable, flat surface away from obstructions.
- Minimize background noise in your environment.
- Check for any software updates for your operating system or communication platform.
- Device Not Recognized:
- Try plugging the USB cable into a different USB port on your computer.
- Restart your computer and reconnect the speakerphone.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 5.39 x 1.81 x 5 inches |
| Item Weight | 7.4 ounces |
| ASIN | B00K2RQATG |
| Item Model Number | 615104250741 |
| Batteries | 1 Lithium Polymer battery required (included) |
| Manufacturer | Sennheiser Enterprise Solutions |
| First Available Date | April 28, 2014 |
Warranty and Support
The Sennheiser SP 20 comes with a 2-year warranty, providing peace of mind regarding the quality and durability of your speakerphone. For technical support, warranty claims, or further assistance, please refer to the contact information provided in your Safety Guide or visit the official Sennheiser support website.
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