Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Amplifiers
Which is Better Class A/B or Class D
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Polecat" data-source="post: 483716" data-attributes="member: 554260"><p>How amps are classed depends on how the output transisters handle the + and - halves of the signal.</p><p></p><p>Class A: The transisters are always on. Very clean, ultra low distortion but they run very hot and are inefficant as heck. Thats why there soooo well.... HOT!</p><p></p><p>Basicaly alot of power goes in for very little output.</p><p></p><p>Class B: Use different parts of the circut to deal with the + and - halves of the signal. The output transisters are always switching. They are more efficient and run cooler but have much higher distortion rates than class A.</p><p></p><p>Class A/B: are a combination of?? you guessed it A and B designs. The most widely used amps. Odds are if you own a amp its a class A/B. Good for any application. subs, mids and highs.</p><p></p><p>Class D: Use a design where the transistors are either on or off. Hence the marketing guys calling them "digital" They are not true digital but hey! They got away with it for awhile!</p><p></p><p>Class D amps are very efficient so they run cool but have high distortion rates kinda like class B's and have a limited frequency responce. 20Hz to 200 Hz is normal. They work great for subs cuz they produce alot of power with less current, are small for the amount of power they produce and are cheaper per watt. The high distortion means very little with subs because the human ear does not hear distortion untill much higher levels at low frequencies.</p><p></p><p>Class T: A new amp class that is really a class D but with a tripath chip included. I dont know how it works for sure but supposed to have the benifits of a D and the low distortion of a A/B. I would be wary of them untill they prove themselves a little more.</p><p></p><p>High current amps: are normally class A/B designs they have large banks of output transisters and huge power supplys. The are stable into very low ohm loads. A good example is the kickers XS 100. 50 watts x 2 at 4ohm stereo but over 1000 at 1ohm mono. The famous "cheater" type amps you might have heard about.</p></blockquote><p></p>
[QUOTE="Polecat, post: 483716, member: 554260"] How amps are classed depends on how the output transisters handle the + and - halves of the signal. Class A: The transisters are always on. Very clean, ultra low distortion but they run very hot and are inefficant as heck. Thats why there soooo well.... HOT! Basicaly alot of power goes in for very little output. Class B: Use different parts of the circut to deal with the + and - halves of the signal. The output transisters are always switching. They are more efficient and run cooler but have much higher distortion rates than class A. Class A/B: are a combination of?? you guessed it A and B designs. The most widely used amps. Odds are if you own a amp its a class A/B. Good for any application. subs, mids and highs. Class D: Use a design where the transistors are either on or off. Hence the marketing guys calling them "digital" They are not true digital but hey! They got away with it for awhile! Class D amps are very efficient so they run cool but have high distortion rates kinda like class B's and have a limited frequency responce. 20Hz to 200 Hz is normal. They work great for subs cuz they produce alot of power with less current, are small for the amount of power they produce and are cheaper per watt. The high distortion means very little with subs because the human ear does not hear distortion untill much higher levels at low frequencies. Class T: A new amp class that is really a class D but with a tripath chip included. I dont know how it works for sure but supposed to have the benifits of a D and the low distortion of a A/B. I would be wary of them untill they prove themselves a little more. High current amps: are normally class A/B designs they have large banks of output transisters and huge power supplys. The are stable into very low ohm loads. A good example is the kickers XS 100. 50 watts x 2 at 4ohm stereo but over 1000 at 1ohm mono. The famous "cheater" type amps you might have heard about. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Amplifiers
Which is Better Class A/B or Class D
Top
Menu
What's new
Forum list
