HOME
CAR AUDIO
 
CAR STEREO  
CD CHANGERS  
IN-DASH RECEIVERS  
CAR SUBWOOFERS  
CAR AMPLIFERS  
IPOD & MP3 CAR ADAPTERS  
SATELLITE RADIO  
CAR SPEAKERS  
BLUETOOTH CAR KITS  
CAR VIDEO
IN-DASH DVD RECEIVERS  
GPS NAVIGATION SYSTEMS  
HEADREST MONITORS  
PORTABLE ELECTRONICS
MP3 PLAYERS  
PORTABLE DVD PLAYERS  
PORTABLE NAVIGATION  
ELECTRONICS MANUFACTURERS
AUDIOBAHN ELECTRONICS  
BAZOOKA ELECTRONICS  
BOSE ELECTRONICS  
JVC ELECTRONICS  
KENWOOD ELECTRONICS  
KICKER ELECTRONICS  
PIONEER ELECTRONICS  
MTX AUDIO  
SONY ELECTRONICS  
INSTALLATION ACCESSORIES
SUBWOOFER BOX
CAR ALARM
REMOTE CAR STARTERS  
RADAR DETECTORS
HOME AUDIO
COUPONS
HELP CENTER
SUBWOOFER WIRING DIAGRAM  
SUB BOX VOLUME CALCULATOR  
BUILDING SUB BOXES  
CAR RELATED WEBSITES
 
CarAudioKing.com
 
CAR REVIEWS
CAR TECH
LATEST GADGETS
CAR AUDIO VIDEO ARTICLES
 
   
   
Technology blogs  
Bloglisting.net - The internets fastest growing blog directory  
Blogadr.com - Listed (add your blog to Blogadr.com)  
 
Listed in LS Blogs  
Blog Directory  
 
   
   
 

CAR AMPLIFIERS INFORMATION:

mplifiers take a signal from a source and produce a larger one. This process makes the sound powerful. The main challenge of any amp is to amplify the signal without producing any distortions. Amplifiers must maintain sufficient power and that’s why they have a powerful power supply. Many car owners add amplifiers to maximize their sound performance and quality.

How do car amplifiers work?
A cassette radio or CD player produces a maximum of about nine real watts into four speakers given the power it gets from the car's electrical system. So what if you want more than nine real watts to power each of the speakers? You obviously need an amplifier. Amplifiers give more power allowing you to play your music more loudly. Amplifiers also improve the sound quality of music at all volume levels.

Features of Car Amplifiers:

Are you looking for the right amplifier for your car? There is no doubt that choosing the right amp can be a challenging and complicated. Below are some things you need to look for before you buy any car amplifier.

Bridging (Bridgeable Amplifiers):
To understand amplifier bridging, we need to know what it means. Amplifier bridging is basically using 2 channels of an amp to drive a common load. Bridgeable amps have a huge advantage of being able to use them in different system configurations. 4 channel amplifiers, for example, can be used to power four, three or even one speaker if you decide to change it.
Why do I need to bride an amplifier?
Sometimes you need to bridge your car amplifier to maximize power to your speakers and enhance sound performance.

Speaker-level inputs:
Since most factory stereos don’t have amplifier outputs, then the only way to wire your amp is through your radio’s speaker wires. The main advantage of Speaker-level inputs is being able to hook up an amplifier to your factory stereo system.

Remote bass control:

It’s useful to have a remote bass control because gives you the flexibility to change the output level (power) of the amp from anywhere in the car. The remote bass control knob can be placed anywhere to easily adjust power (or bass) to your subwoofers.

High-pass filter/low-pass filter/crossover:
Filters let you adjust the frequencies you send to the speakers or subs. High-pass filters eliminates can be used to prevent speaker damage caused by low frequencies. The low-pass filters however, eliminate high frequencies the sub can’t handle.

Bass boost:
Bass boost is a circuit in your amplifier that improves the bass even if you don’t have a subwoofer. This can be useful if you need more bass in your system.

Buying the right amplifier is not an easy task due to the technical issues involve. Make sure to understand what you exactly need the amplifier for. This can help you buy the right amp for the budget you can afford.

Amplifiers classes:

Car Amplifiers are clasified by 5 main classes:

Class A Amplifiers:
Although class A amps provide clear sound, they are considered to be inefficient because they get heated very fast. Class A amplifiers also don’t provide enough power for the effort they consume. Class A amplifiers are ideally used for car tweeters.

Class A/B
Unlike class A amps, class A/B amps are considered to be more efficient but produce more distortion. A class A/B car amplifier is formed when a class B style output stage is biased so that around the crossover point both transistors are conducting. This yields more distortion than either a proper class A or class B amplifier, however the bias point is much less critical.

Class B amps consist of two transistors, one for each supply rail. In properly-biased class B, only one conducts at a given time, but there is always one conducting. Much of the bad name class B has is due to amplifiers actually being underbiased into class C where there's a portion of the cycle around the crossover point where neither is conducting.
Furthermore, Class B proper biasing may be made very difficult to achieve due to thermal stability issues (especially proper thermal coupling and tracking between the biasing circuit and the output power devices). Class C amplifiers are useless for audio. They are used in RF applications where the harmonics can be filtered out. Nonetheless, the so called "Class G" is just the plain combining of a normal Class AB car amplifier output stage with a Class C "booster" enabled to operate only if high power peak are required by the load. If properly designed they performances are equivalent to that obtained by normal class AB amplifiers.

Class D amplifiers are a rather new phenomenon in the hifi world. They are extremely efficient (80%) and can give a very good result. They use pulse width modulation to amplify the signal; this lets them use the output transistors in switch mode where they're most efficient and dissipate the least power. Originally only for subwoofers, newer designs have since surfaced making this technology capable of sounding very good as a full-range amplifier.

A class D amplifier is one in which the output transistors are operated as switches. When a transistor is off, the current through it is zero. When it is on, the voltage across it is small, ideally zero. In each case, the power dissipation is very low. This increases the efficiency, thus requiring less power from the power supply and smaller heat sinks for the amplifier. These are important advantages in portable battery-powered equipment. The “D” in class-D is sometimes said to stand for “digital.” This is not correct because the operation of the class-D amplifier is based on analog principles. There is no digital coding of the signal. Before the advent of the class-D amplifier, the standard classes were class-A, class-AB, class-B, and class-C. The “D” is simply the next letter in the alphabet after “C.” Indeed, the earliest work on class-D amplifiers involved vacuum tubes and can be traced to the early 1950s.

The high switching frequency used in class-D amplifiers is a potential source of rf interference with other electronic equipment. The amplifiers must be properly shielded and grounded to prevent radiation of the switching harmonics. In addition, low-pass filters must be used on all input and output leads, including the power supply leads.

Amplifier Classes Comparison:

Amplifier Class

Advantages

Disadvantages

Class A Amplifiers

  1. Low Distortion due to low frequency compensation.
  2. Circuit simplicity compared to other amp classes.
  1. Generate lots of heat.
  2. Don’t provide enough power for the effort they consume.

Class A/B Amplifiers

  1. More efficient than class A amps.
  1. High distortion.

Class B Amplifiers

 

  1. High crossover distortion.

 

Class D Amplifiers

  1. Very efficient due to low power indulgence.
  2. Low power consumption.
  1. RF interference with other components.
  2. Must be properly shielded and grounded to avoid radiation.


See also: Cheap Car Amplifiers - JVC Arsenal Amplifiers


CAR AMPLIFIERS NEWS:

VVT Amplifiers sees growth in its niche - So Md News

So Md News

VVT Amplifiers sees growth in its niche
So Md News
“What started me building amplifiers was an older son [James III], two years older than Daniel, [he and Daniel] started playing guitar and they wanted a real amplifier. So I bought them a real amplifier from Hot Licks Guitar Shop,” electrical engineer ...

and more »

Global Electroencephalography Amplifiers Industry Report 2016 - Medgadget.com (blog)

Medgadget.com

Global Electroencephalography Amplifiers Industry Report 2016
Medgadget.com (blog)
The report, 'Global Electroencephalography Amplifiers Industry Report 2016' provides detailed market and segment level data on the Global and Chinese consumption of Electroencephalography Amplifiers. The report provides historic, forecast and growth ...
New report shares details about the 2016 global amplifiers market growth, trends up to 2021WhaTech

all 1,135 news articles »

Scumbag thieves steal two amplifiers from outside popular blind busker's home - Mirror.co.uk

Mirror.co.uk

Scumbag thieves steal two amplifiers from outside popular blind busker's home
Mirror.co.uk
The 47-year-old father-of-two left an aluminium trunk containing two Roland Street Cube EX amplifiers at the foot of steps outside his house as he ran inside in driving rain with his guide dog, Toffee. Andy, who performs as Andy J, rubbed Toffee down ...
Thieves steal blind busker Andy Joynson's amplifiers as his back turnedRossendale Free Press
Blind Liverpool city centre busker has expensive guitar equipment stolenLiverpool Echo

all 4 news articles »

Qorvo's 802.11ac power amplifiers delivering higher throughput and greater range for Wi-Fi platforms - Semiconductor Today

Qorvo's 802.11ac power amplifiers delivering higher throughput and greater range for Wi-Fi platforms
Semiconductor Today
Qorvo Inc (which provides core technologies and RF solutions for mobile, infrastructure and defense applications) says that its recently launched RFPA55X2 Wi-Fi power amplifier (PA) family is enabling many of today's leading home and business WLAN ...

Emotiva Announces Emersa Line of Preamps and Power Amplifiers - Audioholics (press release) (registration) (blog)

Emotiva Announces Emersa Line of Preamps and Power Amplifiers
Audioholics (press release) (registration) (blog)
Hot on the heels of announcing a major upgrade to their XPA series of power amplifiers, Emotiva has unveiled a brand new line of audio gear dubbed Emersa. Given Emotiva's already expansive lineup, you may be wondering what is so special about the new ...

Green German amplifiers with growing DSP library - Installation International

Green German amplifiers with growing DSP library
Installation International
Energy-efficient amplifiers are being showcased, together with ProAudio Technology speakers, in Hall 7 by Hoellstern, and in a special demo for the show by Amsterdam-based distributor Auvilight Rental Concept. The range includes both 2-channel and ...

NAMM '16 - Tone King Amplifiers Royalist 45 MK II Head & Combo, and Ironman II Mini Demos - Premier Guitar

Premier Guitar

NAMM '16 - Tone King Amplifiers Royalist 45 MK II Head & Combo, and Ironman II Mini Demos
Premier Guitar
As Premier Guitar chief content officer since January 2010, Shawn Hammond oversees all of PG's articles, videos, audio, and social media offerings. Although he's probably as loathe to admit his alma mater as they are to claim him, Shawn has a degree in ...

AudioControl Offers Maximum Control To The Director™ Series Network Amplifiers - Home Toys (press release)

AudioControl Offers Maximum Control To The Director™ Series Network Amplifiers
Home Toys (press release)
matrix amplifier, The Director™ Model M6400. Now available are control drivers for AMX, Crestron, Control4, RTI and Savant which will allow integrators to discretely control the key functions of The Director Model M6400 matrix-amplifier when they are ...
AudioControl says matrix amplifier is first of its kindInstallation International

all 2 news articles »

Audio amplifiers market global trends, share, size and 2021 future report published by leading research firm - WhaTech

Audio amplifiers market global trends, share, size and 2021 future report published by leading research firm
WhaTech
The Global Audio Amplifiers Industry provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Audio Amplifiers market analysis is provided for the international markets including ...

and more »

Yamaha Releases New Surface Mount Speakers And Power Amplifiers - Live Design

Live Design

Yamaha Releases New Surface Mount Speakers And Power Amplifiers
Live Design
With a focus particularly on background music and paging applications, the new VXS3F, VXS3FW, VXS3FT and VXS3FTW surface mount speakers, as well as the MA2120 and PA2120 power amplifiers will be added to the continually evolving CIS Series.
New Flexible Mixer and Power Amplifiers For Yamaha CIS RangeEtNow.com

all 5 news articles »


  HOME CAR AUDIO CAR VIDEO PORTABLE ELECTRONICS CONTACT US SITEMAP
CarAudioProductReviews.com