제 사촌이 일본에서 살다가 귀국하는데, 이 제품을 사가지고 올까 제게 의견을 물어봅니다. 저도 블루투스로 무선스피커를 발매한다는 소니, 삼성 등의 기사를 읽은 적이 있지만 사촌은 제가 오디오전문가인 것으로 착각하나 봅니다.



제 생각에 이 제품은 아마도 앰프 - 스피커 간을 블루투스로 무선연결 AV용으로 사용토록 만들어진 것 같습니다. 근데 이것이 국내에서 써도 되는지, 전파관리법에 위반되지 않는지 등이 궁금하군요. 아래와 같이 설명서에는 100m 거리까지 쓸 수 있다고 하는데, 이 정도면 부엌, 화장실, 베란다 등에 설치하여 쉽사리 음악을 들을 수도 있을것 같습니다.

출력이 50W면 좀 낮은 감이 있고, 음질은 어떨지도 궁금하고....



혹시 삼성이나 LG, SONY등에서 이런 제품 보신적 있으신 분께서 의견 주시면 감사하겠습니다.



아래는 제품 설명서입니다. 가만보니 일본제가 아닌것 같습니다.



Product: Airsurround

Wireless Audio Surrounding Transmitter & Receiver











1.2 Product Description

The Stereo transmitter connects to SR (Surround Right) and SL of DVD Player in wireless (Bluetooth enabled) stereo sound streaming. The Stereo Receiver connects to surround speakers to enable the link of wireless stereo surround in Plug n Play design.



The application scenario shows the wireless audio streaming to be built as cable-free on supporting 3D quality. In terms of combination with multimedia or 5.1 channel speaker on Stereo sound in wireless, the technology of Bluetooth in frequency hopping is much more reliable on streaming and interference avoidance.



Plug n play mechanism is the key of accessing to media application. The stereo Audio in transmitter enables Plug n Play mechanism on DVD Player to connect Stereo wireless receiver automatically. The set configuration would help user on experiencing Stereo with Bluetooth (wireless) without setting trouble and. And good quality of 3D sound will initialize audio streaming into consumer electronics successfully.

1.3 Product Features

● Bluetooth v1.1 compliant

● Supports Radio Frequency 2.4GHz – 2.4835 in FHSS (Frequency Hopping Spread Spectrum) technology

● Proprietary 128MHz hybrid PiCOII-RISC and DSP embedded processor sufficient to support MP3, AC3 and WMA

● Supports dual mode operation of both 16bit 8kbps voice codec and 16bit programmable 32/44.1/48KHz stereo audio DAC

● Supports 3D audio streaming on Music, and Gaming in wireless environment



1.4 Product Application

● Surround Sound in wireless streaming application

- Home Theatre

- 5.1 channel speaker

● Out door or long range speakers implementation of wireless with flexibility

● Supporting any master and slave speakers



2. PRODUCT GENERAL

2.1. General Specification

Standards: Bluetooth standard in proprietary design

Fearure : Digital Audio Streaming IC

-Integrated 128MHz embedded processor to support digital audio codec

-Integrated analog combo codec supporting dual mode operation of 16-bits 32/44.1/48KHz stereo audio DAC (for Audio-in/out set)

Module dimension : 41.8 x 25.5 x 2.0 mm



2.2. LED Indicators

Power : Unlighted : Power Off

Green color LED steady On : Power on

RF TX/RX Unlighted: no activity

Green color LED blinking: TX/RX pairing

Green color LED steady on: TX/RX activity



2.3. Interface

Audio In / out Audio In / out Jacks









3. PRODUCT HARDWARE SPECIFICATION



3.1RF Specifications

3.1.1 General

Emission Type Frequency Hopping Spread Spectrum (FHSS)

RF Frequency 2400MHz – 2483.5 MHz – SA / Europe / Japan2446.5MHz – 2483.5MHz – France

3.1.2 Transmission output power : Typically 2 dBm

3.1.3 Receiving Sensitivity : Typically -83dBm

3.1.4 Antenna : internal embedded

3.1.5 Channel Numbers : 79 (f= 2402 + k MHz, k = 1, 2 ,…78)33 (f= 2447 + k MHz, k = 1, 2..,32)

3.1.6 Operation Range : Typically 100m in free space

3.2 H/W Specification

3.2.1Amplifier Power Output (Surround) 50 Watts15.5W (1kHz, 4Ω, 0.1%THD)25W (1kHz, 4Ω, 10%THD)

3.2.2 SNR: >87 dB

3.2.3 Dynamic Range >80 dB

3.2.4 Input Connector RCA x 2 for Stereo

3.2.5 Power Supply Input AC 100 ~ 240 V,50/60HzOutput DC Adapter 14.6V, 4A





4. PRODUCT SOFTWARE SPECIFICATION

4.1 Firmware Proprietary Firmware



5. PRODUCT COMPLIANCE

5.1 REGULATION COMPLIANCE

FCC Part 15.247, 15.209 certified by FCC

ETSI EN 300, 328-2 certified by CE



5.2 Reliability Requirement MTBF est. 25000 hrs





6. Environmental Requirement

6.1. Operation Environment

6.1.1 Operating Temperature 0 ℃ ~ 45 ℃ in ambient temperature



6.1.2 Storage Temperature -20 ℃ ~ 75 ℃



6.1.3 Humidity 5 ~ 95%



6.2. Drop and Vibration Test

6.2.1 Anti-Static Voltage 4KV air charge, 8KV conductive charge



6.2.2 Vibration Test

The vibration test is under the frequency and amplitude 10-25 Hz 1mm in vertical and horizontal direction by 30 minutes that should not cause any damage on product.



6.2.3 Package Drop Test

Dropping the package from the height of 50cm for each of the six(6) faces onto the hard-wood floor should not cause any damage on product.



Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if t not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by during the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Ø Reorient or relocate the receiving antenna.

Ø Increase the separation between the equipment and receiver.

Ø Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Ø Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.



IMPORTANT NOTE:

FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 2.5cm between the radiator and your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.



Caution: This device includes a module which can emit RF energy. For compliance with FCC exposure rule, the user has to keep at least 2.5cm separation distance between the radiator and the body of the user.