[boodi]

no problem , pm'ed you with details , registration fee and my paypal account

 

[fewtch]

Quote:

Originally Posted by mysticaldodo Pity

Not really, Jan Meier would be a good source. These cans make my mouth water... I better start socking away some cash...

Might have to "settle with" the K601, poor as I am. Will probably buy one or the other for sure, they look very impressive and I haven't picked up any new cans for quite a long time.

 

[mysticaldodo]

Quote:

Originally Posted by fewtch Not really, Jan Meier would be a good source. These cans make my mouth water... I better start socking away some cash... Might have to "settle with" the K601, poor as I am. Will probably buy one or the other for sure, they look very impressive and I haven't picked up any new cans for quite a long time.

Might as well. I'm bankrupt at the moment after upgrading my PC with. Get the AKG 701, never settle for anything less

 

[mysticaldodo]

Or wait for the price to come down. Do AKG's price go down? I remember Sony 5000 use to cost alot and the price went down soon after.

Now that I think of it, the AKGs are overpriced here

 

[fewtch]

Quote:

Originally Posted by mysticaldodo Might as well. I'm bankrupt at the moment after upgrading my PC with. Get the AKG 701, never settle for anything less

Easy to say when it ain't your money

. The price difference is fairly major between the 601 and 701, but I'll wait for a reviews of both before making any final decisions. It's always possible that the 601 may sound better to some people, depending on circumstances (musical genre, gear etc)... price isn't the ultimate indicator of SQ.

 

[pbalcer]

Quote:

Originally Posted by philodox I went to pick up some Shure E4 foamies from CPUsed in Toronto and had a pleasant surprise. These guys sell everything... AKG, Senn, Beyer, Grado, Shure, Ety, etc. They even sell a few amps, though nothing I would be interested in [Perreaux, Grado, Simpl]. I asked the guy about the K701 and he seemed confident that he could get them soon. Left my email addy so he could get ahold of me.

Hey philodox!

This is a great news! I always thought they were selling only Apple stuff... I visited their website today and it looks totaly different. However, their prices listed on the website on AKG headphones are a bit steep comparing to Long&McQuade... Are the other headphones' prices ok?

Anyways, I'm waiting for the K701 to come out. If the reviews are positive, I'm going to get me a pair.

 

[augustwest]

I have never been a fan of the AKG headphones. Maybe the 601, or 701, will change that. The 701 sure looks nice.

- augustwest

 

[mysticaldodo]

But if you really like the 701 better then the 601, wouldn't it be cheaper in long term to get the 701 straight rather then buying the 601 then going on to the 701 later?

Still you're right. Better wait for the review and self demo before I plan too much

The 701 might suck on my setup. I hope they make it easier to drive

 

[JaZZ]

Quote:

Originally Posted by mysticaldodo The 701 might suck on my setup. I hope they make it easier to drive

After all the K701 has 62 ohm and an efficiency of 105 dB/V, whereas the K601 has 120 ohm and 101 dB/V: The efficiency indicated for the K501 with its impedance of 120 ohm is not directly comparable (SPL/mW instead of dB/V), but extrapolated from the HD 600/650 values it should be around 95 dB/V. So the K601 will be more efficient than the K501, the K701 even more so, add to this the lower impedance.

 

[Andrea]

If my method for converting a dB/V into a dB/mW measure is correct, the K701's efficiency is 93 dB/mW and the K601's is 92 dB/mW, thus both should have slightly lower efficiency than the K501. A "countercheck" is possible through http://www.headphone-amplifier.com/calculator.htm -- in fact, inserting my results and the phones' impedance, plus "1000" in the "Level (mV)" field, you'll get just (roughly) the dB/V specs declared by AKG for both new phones.

 

[philodox]

Andrea - So the K601 and K701 are harder to drive than the K501? Excellent, my Dynahi will not go to waste.

 

[JaZZ]

Quote:

Originally Posted by philodox Andrea - So the K601 and K701 are harder to drive than the K501?

No, that can't be true. The HD 650 measures 103 dB/V, compared to 105 dB/V of the K701 and 101 dB/V of the K601. So at least the K701 is even more efficient than the HD 650. Which in turn is clearly more efficient than the K501 and also more sensitive, despite the higher impedance. The HD 600 -- which has the same efficiency as the HD 650 -- measures 97 dB/mW, the K501 94 dB/mW. These values indicate sensitivity (not efficiency!) which is related to the impedance. Given the HD 600's 300 ohm compared to the K501's 120 ohm (2.5 : 1), the HD 600 is about 7 dB more efficient than the K501. Whereas the K601 is 4 dB less efficient than the K701 and just 1 dB less so than the HD 650 (and HD 600).

Efficiency (according to my approximated calculation)

K701 : 105 dB/V
HD 600/650 : 103 dB/V
K601 : 101 dB/V
K501 : 96 dB/V

Sensitivity

K701 : 106 dB/mW
K601 : 99 dB/mW
HD 600/650 : 97 dB/mW
K501 : 94 dB/mW

 

[Andrea]

Problem is (as far as I understand) that the dB/V spec is affected by the impedance of the headphone (the higher the impedance, the more V to achieve the same sound pressure), while the dB/mW is not.

(Just btw, applying my method the opposite way, the resulting efficiency for the K501 is roughly 103 dB/V (this can also be verified through the "calculator"))

Anyway, that "headphone calculator" would seem to confirm my own calculations, no?

 

[JaZZ]

Quote:

Originally Posted by Andrea Problem is (as far as I understand) that the dB/V spec is affected by the impedance of the headphone (the higher the impedance, the more V to achieve the same sound pressure), while the dB/mW is not. (Just btw, applying my method the opposite way, the resulting efficiency for the K501 is roughly 103 dB/V (this can also be verified through the "calculator")) Anyway, that "headphone calculator" would seem to confirm my own calculations, no?

Indeed. I seem to have mixed up efficiency and sensitivity. Corrected values according to the calculator:

Sensitivity

K701 : 105 dB/V
K501 : 103 dB/V
HD 650 : 103 dB/V
HD 600 : 102 dB/V
K601 : 101 dB/V

Efficiency

HD 650 : 98 dB/mW
HD 600 : 97 dB/mW
K501 : 94 dB/mW
K701 : 94 dB/mW
K601 : 92 dB/mW

However, in reality the K501 is clearly less sensitive than the HD 600/650, and of the two Senns the HD 600 is about 1 dB louder to my ears -- certainly not lower --, so there's something wrong anyway.

 

[wang228]

also, i think we don't really know the stardard by which each manufactorer determines the loudness of its phones (i.e. we don't know the conditions of measurement-- how/where they put the microphones, how they get the seal, etc...) So, comparing headphones from different manufactorers might not be as simple as we would love to think. Also, with the different ways of representing efficiency/sensitivity, i doubt whether the measurement of K501 is consistent with those of K601/701. Maybe somebody could just ask AKG : )