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shure srh750dj or audio technica ath m50??

post #1 of 5
Thread Starter 
Regardeless or prices, which one is the better option?

they are being sold for the same price on HeadRoom and on ebay the m50 is 40bucks cheaper than the shure srh750dj
For now I want the shure because it offers better isolation, but it's up to you to explain me those graphics before I buy..

http://www.headphone.com/selection-guide/top-picks/audio-technica-ath-m50.php
http://www.headphone.com/selection-guide/shure-srh750dj.php

I can see by the graphs that they are pretty different. But I have no clue of what those graphs mean....

graphCompare.php?graphType=0&graphID[]=2191&graphID[]=1473
graphCompare.php?graphType=1&graphID[]=2191&graphID[]=1473
graphCompare.php?graphType=7&graphID[]=2191&graphID[]=1473
graphCompare.php?graphType=4&graphID[]=2191&graphID[]=1473
graphCompare.php?graphType=3&graphID[]=2191&graphID[]=1473
post #2 of 5
Is it me or you have made like 3 threads for the same stuff?
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post #3 of 5
1st graph: Frequency response. How are headphone sounds like sound signature wise.

Interpretation of graph: Both have even bass response , with dips near the 80Hz for the M50 and 100Hz for the 750DJ to counter any mid-bass hump and with the M50 have less reseed treble than the 750DJ (see beyond 10,000 Hz)

2nd Graph: Harmonic distortion is how much distortion is introduced in the analog signal by the equipment, in this case, the headphone.
Interpretation of graph: Both are beyond audible levels. It is extremely hard to hear any distortion beyond -75dB, even in quiet environments.

3rd and 4th graph:

This explains it better than I can:

Via Ananatech:
Quote:
Paperdoc
Golden Member

Join Date: Aug 2006
Posts: 1,160
Interpretation of Square wave response
Normal sound is composed of sine waves. In an electrical circuit the voltage (or current, depends what you examine) varies smoothly up and down - you've probably seen these graphs - and the resulting sound put out by a speaker ideally will reproduce this variation in terms of pressure waves in the air that your ear can hear. A square wave, on the other hand, jumps instantly from the maximum (+) voltage to the minimum (-) voltage and then back again instantly. The simplest of these, the ones used for the test you are looking at, are "50% square waves" - that is, they spend exactly half the time in the + voltage region, and half the time in the - region, with instantaneous changes between. The "baseline" is exactly half way between the top and bottom voltages. The frequency of a square wave can be anything you like, just like a sine wave, so you can make a square wave with the same fundamental frequency as a sine wave.

What is special about square waves is that, from the perspective of a mathematical model, it is actually composed of a summation of an infinite series of pure sine waves, each of which is an odd-numbered multiple of the fundamental frequency. So passing a true square wave through a circuit or an earphone is equivalent to passing through it simultaneously a large range of frequencies. How the square wave gets distorted from its original shape tells us something about how the circuit or earphone reproduces all those frequencies.
1. If the square corners of the wave are simply rounded off, that indicates the device has low high-frequency performance.
2. If the square corners actually show overshoot and undershoot, or "ringing", the device is over-emphasizing the high frequencies.
3. If the flat top and bottom portions of the square wave are sloped back towards the baseline (the middle of the voltage range) , the device is not putting out enough bass frequency power.
4. If the flat portions are sloped farther away from the baseline, the bass frequencies are being overemphasized.
5. If the flat portion is not merely sloped, but actually curved down towards the baseline, then there is quite poor reproduction of the lowest bass frequencies. In the website you mentioned this is seen in the special curves for a 50 Hz square wave. That's a very low frequency, and no real speaker of earphone will do a really good job here. The curves they show typically have some of this curved sag in the 50 Hz square wave test. The point is to compare different earphones and see which is more severe in its low-frequency fall-off.

the above measurements tell you little about the sound quality. The SRH750DJ is better than the M50 SQ wise.
post #4 of 5
I have no idea but here's a bump for you since you took the time to layout the graphs for us.
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Royraiden;11916176 
Is it me or you have made like 3 threads for the same stuff?

It's you.

I made 3 threads for 3 completly different things.
Thanks for the bump


Quote:
Originally Posted by Michael Cox;11917260 
I have no idea but here's a bump for you since you took the time to layout the graphs for us.

Thank you for the bump smile.gif

Quote:
Originally Posted by chinesekiwi;11917229 
1st graph: Frequency response. How are headphone sounds like sound signature wise.

Interpretation of graph: Both have even bass response , with dips near the 80Hz for the M50 and 100Hz for the 750DJ to counter any mid-bass hump and with the M50 have less reseed treble than the 750DJ (see beyond 10,000 Hz)

2nd Graph: Harmonic distortion is how much distortion is introduced in the analog signal by the equipment, in this case, the headphone.
Interpretation of graph: Both are beyond audible levels. It is extremely hard to hear any distortion beyond -75dB, even in quiet environments.

3rd and 4th graph:

This explains it better than I can:
Via Ananatech:




bla bla bla





the above measurements tell you little about the sound quality. The SRH750DJ is better than the M50 SQ wise.


So.. it's wiser to buy the shure's if both are priced the same, right? tongue.gif
What should I look at to find out about sound quality?
Edited by EduFurtado - 1/6/11 at 7:23pm
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