SQ-6 Electro-Acoustic Coupler
Precision Pressure Chamber Calibration for Microphones & Sound Level Meters
The innovative, compact solution for secondary calibration of ½" and ¼" microphones per IEC 61094-5, sound level meters per IEC 61672, and phase calibration of intensity probes.
Key Specifications
Why Choose the SQ-6?
Engineered for precision calibration workflows
Fully Symmetric Topology
Fully symmetric electro-acoustic topology ensures a more uniform sound field, delivering highly reliable and repeatable calibration results.
Ultra-Low Distortion
Less than 0.3% THD across the entire frequency range at 94 dB, ensuring clean reference signals for accurate calibration.
High Sound Pressure Level
114 dB across the full 10 Hz to 20 kHz range, with up to 148 dB in the 16 Hz to 5 kHz band for demanding applications.
Modular Sealing System
Rotary clamp closures and modular O-ring sealing configuration satisfy individual test specimen requirements for both ½" and ¼" capsules.
Compact & Portable
At just 60 × 60 × 42 mm with standard photo thread mounting, the SQ-6 fits into any lab setup or field calibration arrangement.
Q-LEAP™ Integration
Seamlessly integrates with SPEKTRA CS Q-LEAP™ calibration system using the HERO™ controller for automated calibration workflows.
Applications
Standards-compliant calibration for every scenario
Microphone Calibration (IEC 61094-5)
Pressure chamber secondary calibration of ½" and ¼" condenser microphone capsules according to IEC 61094-5.
Sound Level Meter Calibration (IEC 61672)
Calibration of sound level meters and complete measuring chains per IEC 61672 standards.
Intensity Probe Phase Calibration
Phase calibration of intensity probes for accurate sound intensity measurements in the field.
Laboratory Reference Measurements
High-precision acoustic reference measurements for accredited calibration laboratories.
Production Quality Assurance
End-of-line verification and quality assurance testing for acoustic instrument manufacturers.
Technical Specifications
| Parameter | Value |
|---|---|
| Sound Field Type | Pressure chamber |
| Frequency Range | 10 Hz – 20 kHz |
| Maximum Electrical Power | 2.4 W |
| Distortion Factor at 94 dB | < 0.3% (THD) |
| Supported DUTs | ½" and ¼" microphone capsules |
| Max SPL (10 Hz – 20 kHz) | 114 dB |
| Max SPL (16 Hz – 5 kHz) | 140 dB – 148 dB * |
| Dimensions (H × W × L) | 60 mm × 60 mm × 42 mm |
* Depending on frequency range, DUT type, and amplifier configuration.
System Components
- SQ-6 electro-acoustic coupler
- Standard power amplifier with power supply
- O-rings and spacers for various ½" and ¼" capsules
- Table tripod with 360° ball head (3 working heights)
- LS adapter (for WS2P microphones)
- System cable and transport case
Optional Accessories
- Reference standards (recommended)
- ½" condenser microphone capsule type LS2P or WS2P with amplifier
- Fixture for sound level meters or heavy microphones
- Spacer kit for intensity probes
- Adapter for ¼" microphone capsules
One-Stop Calibration Solution
The SQ-6 integrates seamlessly into the SPEKTRA CS Q-LEAP™ system solution. Combined with the HERO™ controller, various exciters, and comprehensive software, it provides an efficient workflow for your individual calibration tasks.
View SPEKTRA Calibration SystemsFrequently Asked Questions
What microphone sizes does the SQ-6 support?
The SQ-6 supports both ½" (half-inch) and ¼" (quarter-inch) microphone capsules through its modular sealing configuration with interchangeable O-rings and spacers.
What calibration standards does the SQ-6 comply with?
The SQ-6 is designed for pressure chamber secondary calibration per IEC 61094-5 (microphones) and calibration of sound level meters and measuring chains per IEC 61672.
What is the maximum sound pressure level the SQ-6 can generate?
The SQ-6 generates up to 114 dB SPL across the full 10 Hz to 20 kHz range. In the narrowband 16 Hz to 5 kHz range, it can reach 140 to 148 dB depending on the DUT type and amplifier configuration.
How does the symmetric topology benefit calibration accuracy?
The fully symmetric electro-acoustic topology creates a more uniform sound field inside the pressure chamber, which reduces measurement uncertainty and improves repeatability compared to conventional asymmetric designs.
Can the SQ-6 be used for intensity probe calibration?
Yes, the SQ-6 supports phase calibration of intensity probes. An optional spacer kit for intensity probes is available for this application.
Is the SQ-6 available in Thailand and Southeast Asia?
Yes, Placid Asia is the authorized SPEKTRA distributor for Thailand and the ASEAN region. We provide the SQ-6 system with local technical support, installation assistance, and after-sales service from our Bangkok facility.
Get a Quote for the SPEKTRA SQ-6
Contact Placid Asia for pricing, technical consultation, or to arrange a demonstration of the SQ-6 electro-acoustic coupler. Fast response from our Bangkok-based technical team.
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