Class D and A/B amps

[Jeffteng]

Hi Fireslitter, I agree with your statements as quoted below in italic. I think, in essence, ICE is both an art and science and there is no qualms about it. Why? Technicality aspect of ICE is a science, appreciating the music produced through your ICE is an art. Both works in hand. All amp production will always work towards building good quality amp in respect to the price they are selling and the price you are willing to pay for their effort. You can't possibly get good transistors, capacitors, gold-plated RCA with teflon inerts and good crossover in an amp at a damn low price; and vice versa.

 

Although it is important to understand the circuitry within each classes of amp, does it really matter just how efficient the amp is in terms of wattage to dB ratio? How does it affect you? Can we tell the distinct difference in our discourse of good sound and that of natural sound. Each of us has our own preference to musical appreciation, thus the choice of amps and speakers, even the EQ could be so different. But the bottomline is, music calms our inner soul, in manners that is unique. To each his own.

 

When we are invited to audit other people's ICE setup, we are honoured to be invited into his world of music appreciation. To understand his world of musical appreciation. This manner, you get to understand him more than just a friend, but a chance to go into his inner soul...profound??? Not really, because through my ICE discourse and many crossroads, I have learnt a great deal not explicitly shared here in the forum. Guess not much people are interested anyway.

 

So, be it class A, AB or D, build your ICE system the orthodox way, you will not get lost in the process. There will be some that are adventurous whilst some, conservative. You decide, my kind of music should best be reproduced by what source unit, through what medium and amps and speakers.

 

PS: Didn't mean to drift the subject, am here to offer another insights to the discussion. Cheers.

 

"...Each design will have it's distintive sonic character and different brands do sound again, totally different in most cases. Secondly, while amp designers normally will design an amp with reasonably good sound quality, the natural cost cutting procedures will mean that the amp will come with lower quality components (From creme de la creme Mundorfs/Hovlands to crappy MKTs and Rovers!) In the end is how syngerised the "crappy" components are working with each other that usually determines how good an amp sounds compared to it's peers in the same class."

 

 

Sir, you always the man with the words that gets my head nodding all the way ~~~

[Jeffteng]

Dun need much of your time, 1 hour each Wed and that will be your "antidote"...

 

bro i think that should more like poison then antidote~~~ hahahaha GO AND GET URSELF POISON AT THE NASI PADANG STALL~~!!! go go go GO~!!

[Jeffteng]

hey, i really love this thread~~~ it's like a refreshment course for me leh~~~ .... in fact i would encouraged all those who are crazy about ice to read this thread~~~ very informative~~~

[Evan015]

Do u mean SPL or SQL?

 

Wats the layman terms explanation for Input Tube and Output Mosfet?

these 2 terms realy bugging me, dun realy have much clue on wat they mean actually..

Can u elaborate a little bit, pls? Sorry but i'm not tat smart..

 

Does tat also mean tat using a Class D amp for SQ is actually not tat suitable? or rather to do tat, it wun be working out the potential of a Class D amp?

[Wankie]

hmmm, wat do u mean by Tube sound Warm? heh heh I can give you a dynamic Tube amp vs a warm Transistor Amp. Does that make the tube sounds warm ? or cos it's "WARM"?

 

[Wankie]

amp has input & output stage. basically means hybrid design, input stage using tubes/valves and output stage using mosfet/transistors.......i think, wahahahahaaa.......

[Wankie]

.....

and no, I'm not a naim/PRAT/flat-earth person, but I was impressed.

 

farni you shld mention that 'cos all the naim ppl i know are all pro-naim zealots

[Jeffteng]

hmmm ... ok , use metaphor, for example the

 

AIR INTAKE, is using K&N and the EXHAUST is using REMUS.

 

Can understand better? But it's not about brands but about how the input and output is manipulated with technologies rather gurus out there,like this can ?

 

... damn it i dunnoe how to explain further anymore~~ kekekeke

[X_confuse]

Think totally disagree what you said.

 

Quality is base on the circuit design not measure it by CLASS. If you mind set said Tube is expensive. Then you may easily core by sellers.

 

Class A, when the RMS power at 5w or 15w. it may sound like Class A. But when it boost up to 75w or... it can't be the class A anymore. Maybe AB and B. So in the market in fact only AB or B. Class A is those company used as marketing purpose.

 

Hybrid Tube = input tube ,Output mosfet. In fact same prices with those market normal amp. Again. It depend on the circuit diagram design.

 

Full Tube= sound warm, what it ex in the market. Because designer have to put effort on the cooling design and power stablelizer.

 

D class = what american ppls like to use for sub.Bcos it used a little bit of current/power supply but produced the big power ( RMS ) output.

 

The prices on amplifier is measure by the amp circuit design. Mean the amp must be able to transfer the signal from the input stage to the output staget of the amp with the min signal lost and with consistantly. And... too many !!!

 

Best amplifer for sub ( SQ ) will be the normall class AB or.. no D.

 

Too much things. Better listen by your own ear. = )

 

 

hmmm, wat do u mean by Tube sound Warm? heh heh I can give you a dynamic Tube amp vs a warm Transistor Amp. Does that make the tube sounds warm ? or cos it's "WARM"?

 

ok, mostly full tube will feel warm. Transistor amp also feel warm.Is depend on the design and also how you measure it " WARM " .

[X_confuse]

wat do you mean by input tube and output mosfet? Can elaborate?

so there's realy no hard and fast rule tat states wat tyoe of amp is suitable for component or sub or used to achieve SQ or SPL, rite?

if there is, so to achieve SQ or SPL, which class of amp should we use?

So, for circuit diagram design, wat are the kind of diagram or design tat amps are based on? and wat are the differences for these designs?

 

I apologise if i am asking too much.. but was just curious? coz reading on website, some of the terms tat they use, really can't understand, easier to refer layman's term to professional lingo..

 

Input stage of the amp is Tube and Output stage of the amp is mosfet circut design. Mostly all the USA brandnames are using mosfet circuit design.

Talk abt Tube will related with fiber optic. wow... long story

 

In fact AB/Mosfet design are suitable for SQ and SPL. The only things u have to do is add on the capacitor to make the current supply more constant and more energy. In fact AB/Mosfet amp can perform SQL !!! Normally the damping factor is high compare with class D

 

Class D was designed by US. Bcos for the past history,they like to play loud.Many subs.

use small current but produce the high power. Normally u can easily to get class D amp with big power rating.

 

Most of the european products are AB n mosfet. Bcos they more on audiophile system.

 

Note, monoblock also got class AB n mosfet. Doesn't mean all the monoblock is class D

 

 

 

yupe totally agree~

 

tks tks. can i go now ?

[X_confuse]

as wat Xconfused said, AB also can, but personally, i'll still go for a class D as it wont generate so much heat

 

hmm... can tell u r the SPL kaki.

but the audioart amps that u use are AB design le. good stuffs.

 

that fellow SPL SIAO one lah~~~ inside his head only about SPL~~~ and also PCC lah, all those crazy perverted stuff~~~ that's our Headshok~~

 

So headshok looks should be fat fat tall tall a bit kuan lan kuan lan . American looks. wow, then he must try the cerwin vega stroker( Old model with the pin ) man. 8pcs 15' strokers killed 36pcs of Rockford power 12' subs.

 

Don't know still have or not. Saw it in Melaka. sure u like it. Check with Ban Leong la or Sim Lim.

[Jeffteng]

hahaha , dun worry u can go anywhere, u reply to things i dun see eye to eye and also reply my agreement with things i agree with, dun mind my straightness.

 

In my life in Ban Leong last time, I THINK i sold less then 10 pieces of Strokers... bloody difficult stuff to sell heh heh and freaking heavy and expensive~~

 

If anyone wanna see the 18" stroker pro, there is one hanging up on front of the shop in one Audio shop in Brunei, name LYY. Any bruneians here can go and check it out.

[X_confuse]

r u ban leong salesman ???

[Jeffteng]

hahaha, no i never was Ban Leong Salesman~ and also am not now heh heh

[X_confuse]

then who r u ?

u r the parallel importer!!!!!!

or owner of any sim lim shop?

[Jeffteng]

I am jus JeffTeng, simple as that~~ no PI, no owner of any shop, no more dealing in Audio products.

[X_confuse]

know u from Er,Dai-ichi and Edison.

ur father no pay u well?

[Jeffteng]

Tell Er i am earning my keep very well now Thanks. And there is no need to bring my father into this forum, please do not do this again, this is lame, i think an apology would be suitable here.