Expansion Microphones for HP POLY Trio 8300/8800 conference phones — model 85X00AA

Expansion microphones for HP POLY Trio 8300 and Trio 8800 conference phones provide additional audio pickup points to extend the voice capture range in larger meeting spaces. These wired expansion microphones connect to the Trio base unit to improve coverage for hybrid meetings, conference calls and boardroom setups by placing supplementary mics closer to remote participants and small discussion groups.

Advantages

These expansion microphones increase the effective pickup radius of the Trio 8300/8800 system, reducing the need to raise voices and improving speech intelligibility for remote attendees. They integrate with the Trio base unit to preserve the system’s echo cancellation and automatic gain control, maintaining consistent audio quality across multiple microphone locations. The design allows flexible placement to match room layout without changing the core conferencing hardware.

Suitable for

• Medium to large meeting rooms where the base unit alone does not cover all participants
• Boardrooms and hybrid meetings with distributed seating
• Conference calls requiring improved speech clarity for remote participants
• Training rooms and small group breakout areas needing localized microphone pickup

Key specifications

• Compatibility: Designed for use with HP POLY Trio 8300 and Trio 8800 conference phones
• Connection: Wired connection to Trio base unit for audio and control integration
• Coverage: Extends voice pickup range to reach participants located away from the base unit
• Audio handling: Works with Trio echo cancellation and automatic gain control systems
• Placement: Portable, adjustable placement to match room configuration

How to use

Connect each expansion microphone to the designated expansion port on the Trio 8300 or Trio 8800 base unit following the system’s cabling instructions. Position microphones near groups of participants or at table edges to capture voices clearly while avoiding physical obstructions. The Trio base unit recognizes connected expansion microphones and incorporates them into system audio processing; no separate mixing device is required. Verify audio levels from the conference phone interface and adjust placement as needed to balance pickup across the room.

Usage recommendations

Place expansion microphones approximately equidistant from seated participants and at least 30–50 cm from loudspeakers to minimize feedback. For optimal coverage in larger rooms, use multiple expansion microphones spaced evenly and test call audio before important meetings to confirm even speech intelligibility for remote attendees.