Passive tone control for Philips 410 radio. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Philips 410 radio passive tone control. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Tone, volume controls

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Philips 410 radio passive tone control, schematic diagram

Author: A. Shikhatov; Publication: bluesmobile.com/shikhman

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Sony WF-XB700 and WH-CH710N Wireless Headphones 07.04.2020

Sony has announced two new models of wireless Bluetooth headphones: WF-XB700 and WH-CH710N.

The WF-XB700 wireless headphones were announced as part of the Sony Extra Bass series and are made in the form of in-ear solutions. The design partially resembles the appearance of the flagship model WF-1000XM3. The device is IPX4 certified and water and sweat resistant. But, despite the similarity in design, the new model lacks the active noise cancellation feature that is available in the flagship version. To control the operation of the headphones, physical buttons are used.

The total battery life (when recharging from the complete case) is about 18 hours, and the operating time without recharging the headphones themselves is stated at 9 hours. The Sony WF-XB700 Wireless Headphones will go on sale for $130.

The WH-CH710N headphones are an upgraded version of the WH-CH700N released at the end of 2018. The novelty features an improved noise reduction function, for the needs of which two microphones are available.

Battery life has not changed and is the same 35 hours. The Sony WH-CH710N headphones are priced at $200.

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