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Number 1 Sound. Your best choice for car audio installs.

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 on: April 03, 2010, 04:33:05 PM 
Started by Number 1 Sound - Last post by va7kpt
Hey, ive got a 53 plymouth cambridge. Wondering if theres anything special i need to do when setting up an alpine unit in the car. (grounding, power).

 on: May 17, 2009, 11:34:13 PM 
Started by Number1Sound - Last post by Number1Sound
Nakamichi is a historic Japanese high end audio company most famous for its innovative and very high quality cassette decks.

 on: May 17, 2009, 11:32:28 PM 
Started by Number1Sound - Last post by Number1Sound
Clarion Co., Ltd. is a Japanese manufacturer of car audio, automotive navigation systems, AutoPCs, visual equipment, bus equipment, and communication equipment.

Clarion has an OEM relationship with many automotive companies, providing car headunits and components to them for their production vehicles. Clients include Suzuki, Ford, Volkswagen, Subaru and Peugeot.

 on: May 17, 2009, 11:30:19 PM 
Started by Number1Sound - Last post by Number1Sound
Alpine Electronics, Inc. is traditionally known as an aftermarket car audio and navigation systems manufacturer, famed for their high quality, high price in-car audio units commonly known as head units.

In 2006 Alpine's turnover came 76% from OEM business, mainly to premium vehicle brands like Mercedes-Benz, BMW, Acura, Volvo, Jaguar and Land Rover. It is a subsidiary of Alps Electric Co. and its registered head office is in Tokyo, Japan. However its main offices, or the real headquarters, are in Iwaki, Fukushima Prefecture, Japan.

Alpine offers a wide range of items, including in-car multimedia, amplifiers, speakers, subwoofers and signal processing equipment.

 on: May 17, 2009, 11:28:03 PM 
Started by Number1Sound - Last post by Number1Sound
Car Audio Competition is a competition rewarding the person who can produce the loudest sound inside a vehicle. The "dB" means decibels of sound pressure level (SPL).

In these competitions, SPL (Sound Pressure Level) of 155 dB can be reached, and it is not unheard of to see 160+ dB as well.

Competitive vehicles can range from a small vehicle with a single amplifier and subwoofer up to a large van with dozens of amplifier and subwoofer powered by dozens of car batteries and with upgraded electrical wiring and alternators.

During a competition, the vehicle must be driven 20 feet. Nobody is allowed to sit in the vehicle during trials because injury would be certain. The vehicles are sealed tight to maximize containment of the sound energy for the decibel level meter. The competitor stands away from the vehicle with an on/off switch control while a computer voice announces the stages for the "races". The test tone consists of a very short resonating tone between 30 Hz and 70 Hz, called "the burp".

 on: May 17, 2009, 11:25:05 PM 
Started by Number1Sound - Last post by Number1Sound
A loudspeaker is an electroacoustical transducer that converts an electrical signal to sound. The term loudspeaker can refer to individual transducers (known as drivers), or to complete systems consisting of an enclosure incorporating one or more drivers and electrical filter components.

Speaker specifications generally include:

Speaker or driver type (individual units only)
Full-range, woofer, tweeter or mid-range.

Mid-range driver
A mid-range speaker is a loudspeaker driver which reproduces middle frequencies. Mid-range drivers can be made of paper or composite materials, or be compression drivers. If the mid-range driver is cone-shaped, it can be mounted on the front baffle of a loudspeaker enclosure, or it can be mounted at the throat of a horn for added output level and control of radiation pattern. If it is a compression driver, it is invariably mated to a horn.

A tweeter is a high-frequency driver that typically reproduces the highest frequency band of a loudspeaker. Many varieties of tweeter design exist, each with differing abilities with regard to frequency response, output fidelity, power handling, maximum output level, etc. Soft dome tweeters are widely found in home stereo systems, and horn-loaded compression drivers are common in professional sound reinforcement. Ribbon tweeters have gained popularity in recent years, as their output power has been increased to levels useful for professional sound reinforcement, and their pattern control is conveniently shaped for concert sound.

 on: May 17, 2009, 11:19:29 PM 
Started by Number1Sound - Last post by Number1Sound
A subwoofer is a woofer, or a complete loudspeaker dedicated to the reproduction of bass audio frequencies, from 150 Hz down as far as 20 Hz, or in rare cases lower. Also known as "subs", these are used to augment the low frequency performance of main loudspeakers.

Subwoofers are constructed by mounting one or more woofers in a well-braced wood or plastic enclosure. Subwoofers have been designed using a number of speaker enclosure designs, including bass reflex (with a port or tube in the enclosure), infinite baffle, horn-loaded, and bandpass designs, each of which has advantages and disadvantages in efficiency, size, distortion, cost, and power handling.

Passive subwoofers have a subwoofer driver and enclosure and they are powered by an external amplifier. Active subwoofers include a built-in amplifier.

 on: May 17, 2009, 11:17:49 PM 
Started by Number1Sound - Last post by Number1Sound
Generally, an amplifier or simply amp, is any device that changes, usually increases, the amplitude of a signal. The "signal" is usually voltage or current.

The relationship of the input to the output of an amplifier usually expressed as a function of the input frequency, is called the transfer function of the amplifier, and the magnitude of the transfer function is termed the gain.

The gain of an amplifier is the ratio of output to input power or amplitude, and is usually measured in decibels.

 on: May 17, 2009, 11:10:00 PM 
Started by Number1Sound - Last post by Number1Sound
The head unit is the centerpiece of the car's sound system. Typically located in the center of the dashboard, modern head units are densely integrated electronic packages housed in detachable face plates.

Head units give the user control over the vehicle's entertainment media: AM/FM radio, satellite radio, CDs, cassette tapes (although these are now uncommon), MP3, GPS navigation, Bluetooth, etc.

Many audio-only head units afford the user precise control over detailed audio functions such as volume, band, frequency, speaker balance, speaker fade, bass, treble, EQ and so on.

 on: May 17, 2009, 11:08:29 PM 
Started by Number1Sound - Last post by Number1Sound
This is for our members to post technical issues and specifications, so that it makes it easier for someone to find and respond to them.

Please note: Any posts non related issues will be deleted without warning.

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