A receiver and amplifier receive the radio waves from the sub reflector, and make these weak radio waves strong enough to be recorded and turned into electronic signals.

接收器和放大器接收来自副反射器的无线电波，并使这些微弱的无线电波强大到足以被记录下来并转化成电子信号。

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That report indicated that there may be a hardware issue somewhere between the antenna and the amplifier.

该报告指出在天线和放大器之间的某处，可能存在硬件问题。

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There's even a program that lets you plug in your electric guitar and have the iPhone replicate an amplifier.

甚至有一款软件能让iPhone连上电吉他从而替代扩音器。

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Another less-than-obvious hardware change is the addition of a feedback amplifier -- possibly something like this chip from NXP -- to the phone's loudspeaker.

ENGADGET: HTC shows off One X+ in the UK, we go hands-on (video) Mobile

But the search for a suitable solid-state amplifier took a long and roundabout route.

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The integrated speaker solution is comprised of two-way active speakers (BeoLab 15), an active subwoofer (BeoLab 16) and a rack-ready amplifier (Amplifier 1)-all created specifically for in-wall or in-ceiling placement.

ENGADGET: Bang & Olufsen launches BeoLab 15 in-wall speakers for stealthier beats (update: ears-on)