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speaker spec questions

A

abc

Diamond Member
wanted to 'refresh' some speaker concepts for myself...

i'm interested in some klipsch... i don't necessarily want to rehash another speaker thread ...

i just wanted to learn what numbers - specs to look for, for clean sound.

"Yeah thats really stretching the numbers 630watts at 10%thd. RMS power is the only thing worth looking at when it comes to wattage (0.1<thd.) "


i think i read that quote off a deal board could someone advise what that means more understandably?

and another time say 2months ago a deal board had some comments about bose... that there was some figure that Bose NEVER reveals... anyone with knowledge of Bose (crap eh) advise what this is...

There was a suggestion that there are 2 'numbers' to keep an eye one... one is the one that Bose never reveals about their speakers.. the other... i don't remember...

I'm also interested in that mini denon receiver...

http://www.usa.denon.com/catalog/pdfs/DM33_E3.pdf

anyone would advise against this baby?
 
i don't get what you're asking

that denon stereo seems nice though. I have a denon reciever and I love it. it's much nicer than my old sony that died on me.
 
THD = Total Harmonic distrotion. I deal with this stuff at work. It has to do with how an sin wave looks like when you input it into your amplifier. If it comes out close to what you input, it's good.


oh, BTW, the 10% THD kind of means the input power. 10% is THD is the benchmark at which all audio is tested. Everything is done by precentage because the input signal is usually digital.

 
Originally posted by: Gibson486
THD = Total Harmonic distrotion. I deal with this stuff at work. It has to do with how an sin wave looks like when you input it into your amplifier. If it comes out close to what you input, it's good.


oh, BTW, the 10% THD kind of means the input power. 10% is THD is the benchmark at which all audio is tested. Everything is done by precentage because the input signal is usually digital.
Click to expand...


okay super... how well sound is able to be reproduced from the source eh?

zero thd would be an 'exact' output copy of the 'original'?

THD is a spec for speakers and receivers?

How do I know if for the 'money' the THD is too mediocre?
 
Originally posted by: abc
Originally posted by: Gibson486
THD = Total Harmonic distrotion. I deal with this stuff at work. It has to do with how an sin wave looks like when you input it into your amplifier. If it comes out close to what you input, it's good.


oh, BTW, the 10% THD kind of means the input power. 10% is THD is the benchmark at which all audio is tested. Everything is done by precentage because the input signal is usually digital.
Click to expand...


okay super... how well sound is able to be reproduced from the source eh?

zero thd would be an 'exact' output copy of the 'original'?

THD is a spec for speakers and receivers?

How do I know if for the 'money' the THD is too mediocre?
Click to expand...


see, this is where it gets tough. When you are comparing amplifiers (speakers can be amplifier, but amplifier have their own chip and speakers do not) the one that sounds better is usually teh one the sounds louder. For that reason alone, you cannot just look at specs and see which is better. Also, if you want to get really technical, you have look at stuff such as dynamic range....

THD is not really a spec, it is more of a condition you put your amp through.

0 THD would mean you are inputting nothing into your amp.
 
hmm i thinking now, a member here:Ken90630

mentioned once that the 2 figures are THD and frequency response....
 
Originally posted by: abc
hmm i thinking now, a member here:Ken90630

mentioned once that the 2 figures are THD and frequency response....
Click to expand...



Yes, with frequency response, it is very deceiving to look at since you can test it at several points such as 0 db (which would be kind of dumb to test) and 90db.
 
and another time say 2months ago a deal board had some comments about bose... that there was some figure that Bose NEVER reveals... anyone with knowledge of Bose (crap eh) advise what this is...
Click to expand...

Yes, it is the fact that since they use a DAC and an ADC, they are susceptible to noise. Anything that involves analog has a noise issue, but digital hardly has any. As a result, when you look at a graph such as a signal ay 10% THD, it will not look so good since it will collect lots of noise along the away. To fix this, companies such as Bose use feedback loops and filters to cover it up.
 
here was a suggestion that there are 2 'numbers' to keep an eye one... one is the one that Bose never reveals about their speakers.. the other... i don't remember...
Click to expand...


Would those be Noise floor and dynamic range? i am pretty sure Bose would not show any charts of their noise floor since they use DACs and ADCs.
 
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