TOA TS-690 Central Unit for Conference System

Description

If you are building a professional wired conference system in Bangladesh for a boardroom, government office, or training hall that seats up to 24 participants, the TOA TS-690 Central Unit at ৳84,500 is the control hub that ties everything together. It powers and manages up to 24 TOA TS-691L delegate and TS-692L chairman units, allows 3 people to speak simultaneously without audio chaos, and includes a recording output to save meetings. The optional 2U rack-mount design keeps your AV cabinet clean and organized, making it ideal for permanent installations.

Quick Highlights

• Control 24 microphones from one central hub (TS-691L delegate + TS-692L chairman)
• Allow 3 simultaneous speakers with selectable speaker restriction
• Priority chime alert when chairman overrides delegate microphones
• Prevent open-mic accidents with Auto Mic-Off (30 seconds or disabled)
• Record meetings via dedicated RCA recording output
• Flexible audio input — selectable Mic or Aux source
• Rack-mount ready for standard 19-inch AV cabinets (2U with optional bracket)
• Stable power delivery — 36V DC to all connected conference units

Specification Table

Problem-Solution Description

Running a meeting with 24 individual microphones quickly turns into audio chaos without a central brain controlling who speaks, preventing feedback, and keeping microphones off when not needed. The TOA TS-690 is that central brain.

• Stop Audio Overlap: Connect up to 24 TS-691L delegate and TS-692L chairman units. The central unit intelligently restricts simultaneous speakers to 0–3 people, so you never have feedback or a room full of competing voices.
• Chairman Takes Control Instantly: When the chairman presses the priority button on a TS-692L unit, a single-tone chime alerts the room and the chairman’s voice takes precedence.
• No Accidental Hot Mics: The Auto Mic-Off feature automatically shuts down microphones after 30 seconds of silence, preventing private side conversations from broadcasting to the entire room.
• Record Every Meeting: The dedicated RCA recording output lets you connect an external recorder to document proceedings for later review or compliance.
• Clean Professional Installation: The optional MB-23B bracket allows 2U rack mounting in a standard AV cabinet, keeping cables organized and the equipment room tidy.

Review: Is It Worth Buying?

Yes, if you are installing a permanent wired conference system for 10–24 participants.

The TS-690 is the essential hub for any TOA TS-690 series setup. It delivers stable 36V DC power to all connected units, manages speaking order through intelligent speaker restrictions, and offers a recording output that many competing central units skip. The ability to limit active microphones to just 3 is particularly useful in Bangladeshi meeting rooms where acoustics are not always ideal and feedback is a constant risk.

Skip this if you need a wireless conference system or if your room has fewer than 6 seats — a smaller system may be more cost-effective. Choose this if you want a scalable, rack-mounted central controller that grows with your organization and keeps large meetings orderly.

Best Use Cases

• Corporate boardrooms seating 12–24 executives
• Government council and committee halls
• University senate and syndicate rooms
• Court and arbitration hearing rooms
• Hotel banquet halls converted to conference spaces
• NGO and development organization meeting halls
• Training centers with large participant tables

Why Buy from Expert Technologies BD?

• Genuine TOA products with official warranty
• Complete TS-690 series system design (central unit + chairman + delegate + cables)
• Professional rack-mount installation support
• After-sales technical service across Bangladesh
• Competitive pricing with no hidden costs

Frequently Asked Questions (FAQs)

Which central unit is best for a 20-person conference room in Bangladesh?
The TOA TS-690 is ideal for medium-to-large conference rooms. It supports up to 24 connected microphone units and allows you to restrict simultaneous speakers to prevent feedback.

How many microphones can connect to the TOA TS-690?
A maximum of 24 units can be connected, including a mix of TS-691L delegate units and TS-692L chairman units.

Can the TOA TS-690 record meetings?
It has a dedicated recording output (RCA jack) that lets you connect an external recording device to save conference audio.

How does the TS-690 prevent microphone feedback?
It uses speaker restriction to limit how many microphones can be active at once (0–3 selectable). This prevents multiple open mics from causing feedback loops.

What happens when the chairman presses the priority button?
A single-tone chime sounds, and the TS-692L chairman unit takes precedence over delegate units.

Is the TOA TS-690 rack mountable?
Yes, with the optional MB-23B rack mounting bracket, it fits into a standard EIA 19-inch equipment rack occupying 2U of space.

Can I use both chairman and delegate units together?
Yes. The TS-690 is designed to work with both TS-691L delegate units and TS-692L chairman units in the same system.