This is "the sound you are looking for", the professional quality wireless speaker AirPulse "A300 Pro"

A300 Pro is an active speaker with a built -in DAC.Phil Jones said he finished the unit as an "active speaker that can be used in professional sites."First, let's look at the outline.

The amplifier output is 10W for tweeter and 120W for woofers (both per unit).The left and right housing is a high -efficiency low ripple power supply and a Texas Instrument's "TPA 3251" digital power amplifier.The digital interface consists of XMOS Xcore-200 multi-core processors and Texas Instrument's DSP chips "TLV320AIC3268".

When it comes to active speakers, you may think that you have to connect to the left and right to the left and right power cables, as well as the audio cable, but this unit is OK with only one side of the audio cable except for the use of the monitor purpose.is.In Bluetooth connection, just connect two power cables and finish.Details will be described later.

The driver is a horn road ribbon toter for the high frequency range, 16 for low frequencies.Equipped with 5cm aluminum corn woofer.The ribbon twream is like a trademark used in all active speakers in AirPulse.The aluminum ribbon diaphragm driven by a powerful neodium magnet has a high sensitivity, excellent transitional response and resolution in a wide range.

The horn shape is carefully calculated, reducing the effects of reflection.The aluminum corn woofer voice coil is a 50mm -diameter under hang type controlled by a powerful magnetic circuit.A hard -aluminum alloy cone dynamic plate is driven accurately with high linearity.Salan net does not exist because it is a monitor machine.

The enclosure is a high strength MDF with a thickness of 25mm.Inside, a 36mm thick professional sound absorbing material is placed inside the constant wave absorption.On the back is an elliptical bath reflex port.This is to minimize the wind sound.

The abundance of the input terminal is also the charm of this unit.For monitor applications, the input of XLR and RCA is prepared for each of the left and right speakers.For consumers, various digital inputs can be used in addition to RCA.This input terminal is summarized in the right speaker.

SPDIF supports both light and coaxial.Equipped with USB input.A USB-B terminal that can also use an audio-grade USB cable (USB2).0 Specifications).The wired digital input is compatible with PCM 192kHz.DSD is not supported.MPEG-2 (or 4) AAC used in TV broadcasting etc. is not compatible, so let's output it after converting PCM.Bluetooth supports SBC/APTX/aptX HD.

In the case of monitoring, connect to each speaker with an analog cable.The volume can be adjusted with each speaker.Not a linear, but a stage type variable.The LED on the back is displayed in numbers.

In the case of monitor applications, the level difference between left and right may be added because the localization and balance must be driven more severely.Depending on the shape of the room and the arrangement of furniture, the sound of the sound will change, but the main purpose is to perform strict checks from listening points, so the volume can be adjusted individually for monitor applications.I guess.

High -range and low -range equalizers can be adjusted for each speaker.The shellving type equalizer is adjusted within the range of ± 3dB for high -frequency and ± 6db for low -frequency range.

For consumer applications, if you connect the audio cable to the right speaker only, the left and right transmission will be performed wirelessly.Regarding USB input, you can consider not only PCs but also NAS for direct connection to USB-DAC.

A dedicated driver for Windows will be downloaded from your home country site.If you are using another XMOS driver, you can rest assured that you can uninstall it in advance.If possible, I want a link to the driver on the Japanese site of the import agency Yukim.

SPDIF input (light/coaxial) is used for connections such as game consoles, recorders, Blu-ray/CD players, etc.Nevertheless, recent game consoles and TV -related devices are abolishing SPDIF output.Compared to an analog connection where the grade of the cable is likely to appear in the sound, digital connection can be enjoyed with a reasonable sound quality depending on the quality of the receiving side even with a cheaper cable, so there is a disappointment in the trend of the times.

The accessories are as shown in the photo.It is truly a slightly longer RCA cable.It is bundled with optical digital cables.The remote control allows you to switch input and adjust the volume equalizer.However, the volume and equalizer of the remote control cannot be used when entering the monitor (balance XLR/unbalanced RCA).

When inputting for the consumer, the input selection on the back is Others to operate the volume and equalizer of the remote control.This is different from the monitor application, and it will be operated in bulk left and right.

The attached manual seems to be a Japanese translation of the overseas version, but it uses a lot of figures, and the explanation was very polite and the Japanese translation was natural.