オンソク List of Products and Services

The "OST-828" is an automatic measuring instrument that measures the minimum resonance frequency Fo and impedance Ze of a speaker using a constant voltage method, performing statistical calculations with multiple measurement values for standard determination. All measurement data can be saved. Additionally, it calculates the values of Q (Qes, Qms, Qts). The DC resistance of the speaker is measured separately with a resistance meter and input via a key. 【System Configuration】 ■ Measurement Unit ■ Dedicated laptop for OST-828 (OS: Windows 10 64-bit version) *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

"OST-806" is a device for testing the power handling capability of speaker units. It steps up the load test signal level and displays the step number, voltage, and time when it goes beyond the upper and lower limit set currents. You can download the specifications, so please make use of them. [Operation] ■ One-time mode (steps up only once) ■ Repeating mode (repeats the step-up operation) ■ Maximum level hold mode (steps up and holds the signal at the maximum level) ■ Minimum level hold mode (steps up and holds the signal at the minimum level) ■ Fixed mode (holds a constant signal voltage) *For more details, please refer to the PDF materials or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The "OFV-552" has built-in white noise and pink noise signal sources similar to the "OFV-551," allowing for the creation of band noise freely. It also includes a clipper circuit, enabling the crest factor to be set freely. When using an external input, it can also function as a variable bandpass filter. 【Performance (Excerpt)】 ■ Filters: Two sets of high-pass and low-pass filters ■ Filter characteristics: Butterworth ■ Slope: Four stages of -6, -12, -18, -24 dB/oct ■ Cut-off frequency range: 20Hz to 20kHz ■ Cut-off frequencies: 999Hz × 0.1, 999Hz × 1, 999Hz × 10, 200Hz × 100 ■ Input/output gain: 0dB, 20dB (2 stages) + variable ■ Signal sources: White noise, pink noise, external input *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The "ODC-489" is a device used to check the semi-conductive state (partial open circuit state) of speakers. It detects partial open circuit conditions caused by wire bending or twisting within the voice coil, as well as poor soldering or wrapping defects at the terminal section. First, it measures the DC resistance with a small current, then measures the load current under load operating conditions using a pulse signal, and finally measures the DC resistance again with a small current to compare and determine against good products. The judgment criterion is that when the difference in values from good products exceeds the set value, it is determined to be defective (semi-conductive or partial open circuit). 【Performance】 <DC Resistance Measurement> ■ Measurement Range: 2Ω to 200Ω (Measurement Current = 1mA) ■ Display Resolution: 0.1Ω ■ Measurement Time: 0.2S *For more details, please refer to the PDF materials or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The ODR-639 is a data logger for load testing. It records the voltage, current, and power changes of audio signals input to speakers, as well as monaural audio signals, for up to 100 hours. The recorded data can display the overall RMS and peak values, and can be played back in sync with the recorded waveform of the audio signal. 【Features】 - Records voltage, current, and power changes of audio signals, as well as monaural audio signals, for up to 100 hours. - Recorded data can be retrieved later for audio verification and analysis. - Control, settings, and display are all done via a computer. - Compatible with BTL-connected power amplifiers. *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The OAT-709 is an audio tester that can measure the characteristics of speakers and microphones. It automatically measures the audio frequency range (20Hz to 40kHz) using a 1/2 inch condenser microphone and the frequency range of 200Hz to 100kHz using a 1/4 inch condenser microphone. Measurement items include sensitivity, impedance, F0, Q value, frequency characteristics, and more. 【Features】 ■ Measures 20Hz to 40kHz using a 1/2 inch condenser microphone ■ Measures 200Hz to 100kHz using a 1/4 inch condenser microphone ■ Measured data can be saved to a PC ■ Overlay display and printing of measured characteristics are also possible *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The OAT-706 is an audio tester that can measure the characteristics of speakers and microphones. It automatically measures the audio frequency range (20Hz to 40kHz) using a 1/2 inch condenser microphone. The measured data can be saved to a PC. It is also possible to display and print the overlay of the measured characteristics. 【Features】 ■ Automatically measures the audio frequency range (20Hz to 40kHz) using a 1/2 inch condenser microphone ■ Measured data can be saved to a PC ■ Overlay display and printing of the measured characteristics are possible *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The OAT-901 is an audio tester that measures signal generation and signal acquisition through digital processing. It inspects speakers using speaker application software. The hardware unit (main unit and power amplifier unit) is connected to a computer via a USB interface for use. You can choose from three types of power amplifier units: 2W type (AP-1904), 20W type (AP-1902), and 100W type (AP-1903). 【Features】 ■ Inspection using speaker application software ■ Connection of the hardware unit and computer via USB interface ■ Ability to select the power amplifier according to the speaker being tested *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The "OAT-900A" is an audio tester that measures signal generation and signal capture through digital processing. After creating standard data, measurements can be performed with the push of a button, making operation very simple. Additionally, the sound pressure frequency response range has been expanded to 10Hz to 45kHz to accommodate high-resolution products, compared to the OAT-900 (20Hz to 20kHz). 【Features】 ■ Measures signal generation and signal capture through digital processing ■ Connects the hardware unit to a computer via USB interface ■ Capable of measuring from 10Hz to 45kHz *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The "OAT-900" is an audio tester that measures signal generation and signal capture through digital processing. It is used by connecting the hardware unit to a computer via a USB interface. After creating standard data, measurements can be taken with the push of a button, making operation very simple. 【Features】 ■ Measures signal generation and signal capture through digital processing ■ Connects the hardware unit to a computer via USB interface ■ Very easy to operate ■ Capable of measuring from 20Hz to 20kHz *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment

The OMT-405 is a thermometer that measures the temperature of the voice coils built into a 5-channel speaker unit. It can measure five speakers simultaneously and responds to various sources (sine waves, white noise, pink noise, standard load test noise, music sources) in the frequency range of 20Hz to 20kHz. It displays graphs and values of temperature and input voltage over time. 【Features】 ■ Data sampling can be selected from 1 second, 10 seconds, or 60 seconds ■ Measurement time can be set from 1 minute to 100 hours, in 1-minute increments ■ Stop temperature setting (forced measurement termination) can be set from -50°C to 400°C, in 1°C increments ■ Operating modes include "All Mode," where the set channels operate simultaneously, and "Single Mode," where individual channels start operating independently *For more details, please download the PDF or feel free to contact us.

• Thermometer
• Other electronic measuring instruments

The "OT-1003" is an audio tester that measures and evaluates using digital processing. The measurement frequency range has been expanded to 10Hz to 90kHz, compared to the conventional OAT-900 (20Hz to 20kHz), making it suitable for measuring and evaluating so-called high-resolution products. After creating the reference data for evaluation, measurements can be performed with the push of a single button, making operation very simple. 【Products that can be measured】 ■ Stereo headphones ■ Stereo handsets (stereo headphones + microphone) ■ Handsets ■ Receivers (speakers) simultaneously for 2 units (or 1 unit) ■ Microphones *For more details, please download the PDF or feel free to contact us.

• Other measurement, recording and measuring instruments
• Other environmental analysis equipment