Reply to thread

See what others are reading now! Try Forums > Current Activity

Message: <blockquote data-quote="Tohsan" data-source="post: 2475485" data-attributes="member: 6705">not necessary monoblock have higher rms, thats is depend on the mono specs itself.There are different classes of amp. Source: http://www.wikipedia.orgElectronic amplifier classesAmplifiers are commonly classified by the conduction angle (sometimes known as 'angle of flow') of the input signal through the amplifying device.Class AWhere efficiency is not a consideration, most small signal linear amplifiers are designed as Class A, which means that the output devices are always in the conduction region. Class A amplifiers are typically more linear and less complex than other types, but are very inefficient. This type of amplifier is most commonly used in small-signal stages or for low-power applications (such as driving headphones).Class BIn Class B, there are two output devices (or sets of output devices), each of which conducts alternately for exactly 180 deg (or half cycle) of the input signal.Class ABClass AB amplifiers are a compromise between Class A and B, which improves small signal output linearity; conduction angles vary from 180 degrees upwards, selected by the amplifier designer. Usually found in low frequency amplifiers (such as audio and hi-fi) owing to their relatively high efficiency, or other designs where both linearity and efficiency are important (cell phones, cell towers, TV transmitters).Class CPopular for high power RF amplifiers, Class C is defined by conduction for less than 180° of the input signal. Linearity is not good, but this is of no significance for single frequency power amplifiers. The signal is restored to near sinusoidal shape by a tuned circuit, and efficiency is much higher than A, AB, or B classes of amplification.Class DMain article: Switching amplifierThese use switching to achieve a very high power efficiency (more than 90% in modern designs). By allowing each output device to be either fully on or off, losses are minimized. A simple approach such as pulse-width modulation is sometimes still used; however, high-performance switching amplifiers use digital techniques, such as sigma-delta modulation, to achieve superior performance. Formerly used only for subwoofers due to their limited bandwidth and relatively high distortion, the evolution of semiconductor devices has made possible the development of high fidelity, full audio range Class D amplifiers, with S/N and distortion levels similar to their linear counterparts.Other classesThere are several other amplifier classes, although they are mainly variations of the previous classes. For example, Class H and Class G amplifiers are marked by variation of the supply rails (in discrete steps or in a continuous fashion, respectively) following the input signal. Wasted heat on the output devices can be reduced as excess voltage is kept to a minimum. The amplifier that is fed with these rails itself can be of any class. These kinds of amplifiers are more complex, and are mainly used for specialized applications, such as very high-power units. Also, Class E and Class F amplifiers are commonly described in literature for radio frequencies applications where efficiency of the traditional classes deviate substantially from their ideal values. These classes use harmonic tuning of their output networks to achieve higher efficiency and can be considered a subset of Class C due to their conduction angle characteristics.</blockquote>

Verification

The Marketplace Latest

Evasive EVS Tuning Carbon Body Kit Honda Civic Type...
- Started by aycy
- Exterior and Body
Mugen MS-C Full Bucket Seat Civic Type R FL5 FK8
- Started by aycy
- Engine and Performance
Boost Logic Boostlogic Oil Cooler Kit R35 GTR GTR35
- Started by aycy
- Engine and Performance
Linney IHI 800WHP Turbo Kit R35 GTR35 GTR
- Started by aycy
- Engine and Performance
Varis R35 GTR GTR35 Front Bumper
- Started by aycy
- Exterior and Body
HKS Spec R Titanium Exhaust with Y pipe R35 GTR GTR35
- Started by aycy
- Engine and Performance
2016 BMW 120i LCI M Sport F20 1.6 Auto
- Started by aycy
- Cars for sale
GR Yaris H&R Front Rear Anti Roll Bar
- Started by aycy
- Chassis and Wheels
BBS RI-A 10J God Spec FK8 FL5 Honda Civic Type R...
- Started by aycy
- Chassis and Wheels
Rays Gram Lights 57CR GR Yaris Subaru Impreza Rim...
- Started by aycy
- Chassis and Wheels

Posts refresh every 5 minutes

wanting to buy ........

hi all, newbie here, it's been great to read all your posts and viewing pics of your airtreks.
i am interested in buying one myself, any advice/tips??
recently saw a 2003 model reg 2004, 1 owner with 136K kms.
what...

skyline festival fuji speedway 2010

object width="640" height="385"></

Unregistered S15 Spec R

Hi Guys,

If any of you know where i can get Spec R S15 which is unregistered, kindly let me know
very keen on getting 1, thanks :adore: