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mercari Televisions, Audio, Cameras Audio Equipment Speakers / Woofers Home-built / Parts
Japanese cross-border
パラメトリックスピーカー超指向性、Bluetooth MP3対応
Price
13800円
(Tax included)
RM13800
Specifications
Quantity
-
+
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Seller Rating
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Condition
Brand new, unused
Shipping
Free shipping to Japan
Listed Time
2026-06-05 12:33:41
Updated Time
2026-06-05 12:33:41

パラメトリックスピーカー超指向性、Bluetooth MP3対応

非常に鋭い指向性が楽しめる超音波を利用したスピーカーです。Bluetooth、MP3対応になりました。

音質はポケットラジオ程度ですが、パラメトリックスピーカーとしてはかなり良い音質です。

40kHzのトランスデューサーを48個使っています。

特殊なドライバ回路を使用しているため従来のパラメトリックスピーカーよりも高出力です。

静かな室内で10m~20m程度届きます。

15V程度の電源が長時間使用できるお勧めです。



組立ずみで、簡易調整してお送りします。基板の仕様は変わることがあります。



完成品キットに含まれるもの

画像の超音波スピーカーユニットとドライバボード

Bluetooth、MP3サウンドカード



必要な物

15V~19V、2A程度の直流電源 DCプラグは一般的な5.5mm,中心のピンがプラス

ラップトップ用のDCアダプタなどが使えます。

3.5mmオーディオジャックが入力で、スピーカーを鳴らせる程度の音源、PCやラップトップPCのスピーカー出力が使えます。

サウンドカードを使う場合はマイクロSDカード、Bluetoothから入力できます。カードに付属の3.5mmジャックは使用できません。

仕様は変更する場合があります。



高出力の100個使ったユニットもあります。こちらは21800円です。

このキットはすでに10年以上販売されているもので、海外でも好評をいただいています。



このスピーカーを使った無指向性スピーカーを作ってみました。

空気の非線形特性だけで可聴音を出しているので、ボーカルが生々しく聞こえます。

超音波がマイクに影響しているため、実際に聞こえる音とはかなり違います。



パラメトリックスピーカーを使って、高音質のスピーカーを作ることも可能です。



http://www.zao.jp/radio/parametric/nondirectional.php



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