TH-660 - Pregnant TOA - Free user manual and instructions
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| Brand | TOA |
| Model | TH-660 |
| Product Type | Ceiling Speaker |
| Speaker Type | Two-way, coaxial |
| Woofer Size | 6.5 inches (165 mm) |
| Tweeter Size | 1 inch (25 mm) dome |
| Impedance | 8 Ω |
| Power Handling (RMS) | 30 W |
| Power Handling (Program) | 60 W |
| Frequency Response | 60 Hz – 20 kHz |
| Sensitivity (1W/1m) | 89 dB |
| Coverage Angle | 90° conical |
| Dimensions (Diameter x Depth) | 280 mm x 200 mm |
| Cut-out Diameter | 240 mm |
| Weight | 2.5 kg |
| Material | ABS plastic baffle, steel back can |
| Color | White (paintable) |
| Mounting Type | Flush mount with spring-loaded clamps |
| Protection Rating | IP54 (splashproof) |
| Cable Connection | Screw terminal, 4-pin |
| Transformer Taps (optional) | 70V/100V: 1.5W, 3W, 6W, 12W, 25W |
| Operating Temperature | -10°C to 50°C |
| Compliance | CE, RoHS |
| Application | Background music, paging, commercial installations |
Frequently Asked Questions - TH-660 TOA
What is the impedance of the TOA TH-660 speaker?
The TOA TH-660 has an impedance of 8 Ω, suitable for direct connection to standard amplifiers.
How is the TOA TH-660 installed in a ceiling?
Installation requires cutting a hole of 240 mm diameter, inserting the speaker, and tightening the spring-loaded clamps from the front.
What is the power handling of the TH-660?
The RMS power handling is 30 W, with a program power rating of 60 W. It can also be used on 70V/100V lines with transformer taps from 1.5W to 25W.
Does the TH-660 come with a transformer for high-impedance systems?
The TH-660 has an optional plug-in transformer (sold separately) for use in 70V/100V distributed audio systems.
What is the frequency response of the TOA TH-660?
The frequency response is 60 Hz – 20 kHz, providing clear full-range audio for speech and music.
Can the TOA TH-660 be painted?
Yes, the front baffle is made of paintable ABS plastic. Use latex or enamel paint to match any ceiling color.
What is the sensitivity of the TH-660?
The sensitivity is 89 dB (1W/1m), ensuring efficient use of amplifier power.
Is the TOA TH-660 suitable for outdoor use?
With an IP54 rating, it is protected against dust and water splashes, making it suitable for covered outdoor areas.
What is the weight of the TOA TH-660 speaker?
The speaker weighs approximately 2.5 kg (5.5 lbs), making it relatively lightweight for ceiling installation.
Does the TH-660 include a mounting bracket?
It includes spring-loaded mounting clamps for flush ceiling installation. No additional bracket is required.
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