My Zimbio Car Speaker Modification

New Mazda MX-5 Miata Special Edition

Do you remember the MX-5 Sport Black Edition launched in Britain last summer or perhaps its twin from Japan, the MX-5 Black Tune Edition released this past October? If the answer is yes, we would like to congratulate you on your excellent memory and tell you that the 2012 MX-5 Miata Special Edition that will be unveiled at the upcoming 2012 Chicago Auto Show is more or less the U.S. market version of those two models – hence the RHD pictures released by Mazda.
The main difference is that the American model will not be offered with the Spirited Green Metallic that's available on the Japanese and British variants, as buyers will have to make do with two color options, Crystal White Pearl Mica or Velocity Red Mica.
Like its two siblings, the MX-5 Miata Special Edition features a black-only Power Retractable Hard Top (PRHT) with matching color 17-inch alloy wheels and exterior accents such as the mirrors.
Inside you'll find black heated leather seats with accent stitching, piano black interior finishes and alloy pedals.
The special edition will be available with either the six-speed manual gearbox with or a six-speed Sport automatic transmission with steering-wheel-mounted paddle shifters, both linked to the regular 167HP 2.0-liter four-cylinder engine.
The manual gearbox model gets Bilstein shocks, limited-slip rear differential and sport-tuned suspension.
Mazda said production of the MX-5 Miata Special Edition would be limited to 450 units with pricing to be announced.

PHOTO GALLERY

Subwoofer Filter low pass frequency


This be subwoofer filter low pass frequency circuit, for filter especial low frequency has passed by still the amplifier microphone. By this circuit uses op-amp IC number LF347 , perform the circuit filters low frequency change well, It make the sound that go out to have only low frequency ,about 100HZ not exceed. By have Switch choose frequency level that can want as well. This circuit should choose high-quality equipment, because decrease the noise. The detail is other , see in the circuit.

600W Audio Amplifier


Description
POWER :
Maximum Output power @ 8ohms : 300watt
Absolute max power supply voltage :?38V to ?40V
Recommended power supply voltage :?30V to ?35V

GENERAL DISCRIPTION :
The circuit is based around {LM4702}manufactured by NATIONAL semiconductors&{MJ11029-MJ11028} by ON semiconductors It is a high fidelity audio power amplifier. Designed for demanding consumer and pro-audio applications. You can also use this circuit with AV receivers, Audiophile power amps, Pro Audio High voltage industrial applications etc Amplifier output power maybe scaled by changing the supply voltage and number of output devices. The circuit includes thermal shutdown circuitry that activates when the die temperature exceeds 150?c. CIRCUIT?s mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state.
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