AKG K550 - NEW!! | Page 4 | Headphone Reviews and Discussion - Head-Fi.org

loopfreak · May 20, 2011 at 12:30 PM

Those pads and cups look like redesigned k501 with different material, anyways good news from akg.

CantScareMe · May 20, 2011 at 1:04 PM

When are akg going to release a release date?

And where?- probably their website?

monoethylene · May 20, 2011 at 1:05 PM

End of June..

mikeaj · May 20, 2011 at 1:10 PM

When AKG gives one number for sensitivity they usually give the dB SPL / 1V figure rather than dB SPL / 1mW. So 114 dB / 1V is about 99 dB / 1mW, nominally, at 32 ohms. That's pretty sensitive and loud for fullsize headphones but not too far off 32 ohms Beyers and quieter than Denons.

Quote:

svyr said:
114db/32 ohm... Yikes, more sensitive than any EARPhones that I've ever owned.

Rotatable cups ('2d' lol

? ), non-suspension headband... AKG is being odd... (I guess at least people won't have to tape a piece of pleather over the headband (k702), OR will they

?)

Their response to beyer's T70p and the like?

CantScareMe · May 20, 2011 at 1:30 PM

end of june...?

Where did you get that from, if i can ask

svyr · May 20, 2011 at 1:34 PM

mikeaj said:
When AKG gives one number for sensitivity they usually give the dB SPL / 1V figure rather than dB SPL / 1mW. So 114 dB / 1V is about 99 dB / 1mW, nominally, at 32 ohms. That's pretty sensitive and loud for fullsize headphones but not too far off 32 ohms Beyers and quieter than Denons.

thanks for correcting that. I'll be careful with the units in the future. I should've bothered double checking/finding a converter

(lamely thought it was a typo

) ...
(ps link to formula or calc/derivation for the interested

? (need to convert the K271 sensitivity from /1v to 1mW

edit. ops, nevermind, it already has both quoted on the product page... hm, still, a formula might be good.

monoethylene · May 20, 2011 at 1:34 PM

From a german member of the german forum who wrote an email to AKG..

CantScareMe · May 20, 2011 at 1:55 PM

Cheers

mikeaj · May 20, 2011 at 2:34 PM

Personally I just compute how much power 1V rms input would be. P = V^2 / Z. (power equals voltage squared divided by impedance)

P = (1 V)^2 / 32 ohms = 0.03125 W = 31.25 mW. With 1V input, you're getting 31.25 times more power than if you have 1 mW input.

10 log10(31.25) = 14.95 dB, so 31.25 mW gives you 14.95 dB more SPL than 1 mW. Quoted 114 dB / 1V is thus about 99 dB / 1mW. Keep in mind that impedance and sensitivity vary over frequency in practice though, and they usually just quote the values at 1 kHz.

Quote:

svyr said:
Quote:

mikeaj said:

When AKG gives one number for sensitivity they usually give the dB SPL / 1V figure rather than dB SPL / 1mW. So 114 dB / 1V is about 99 dB / 1mW, nominally, at 32 ohms. That's pretty sensitive and loud for fullsize headphones but not too far off 32 ohms Beyers and quieter than Denons.

Click to expand...

thanks for correcting that. I'll be careful with the units in the future. I should've bothered double checking/finding a converter

(lamely thought it was a typo

) ...
(ps link to formula or calc/derivation for the interested

? (need to convert the K271 sensitivity from /1v to 1mW

edit. ops, nevermind, it already has both quoted on the product page... hm, still, a formula might be good.

Sylverant · May 21, 2011 at 12:34 AM

The K701 uses a 45mm driver right? This closed headphone uses a 50mm driver like the A900/D2K, which truthfully speaking surprises me the most after the design of the phones themself.

The last time I checked the only other AKG headphone with 50mm drivers is the K181DJ, right? I'd like to believe the drivers are a new model since they advertised this phone alongside the K701; it would be a stretch to me if they could tune the K181DJ drivers to have the type of resolution they're claiming.

genclaymore · May 21, 2011 at 12:38 AM

Quote:

tdockweiler said:
No way I'm buying a $300+ headphone without a detachable cable. I think it's too early to know for sure if it's really the "top of the line" AKG headphone.
I'm very curious about this and hope it's not too expensive.

Same, It was the reason why I got the AKG 702 over the 701s other then the deal i found.

tdockweiler · May 21, 2011 at 1:43 AM

Fingers crossed that it sounds like a closed K501 or some of the wooden Audio Technica headphones...probably not, but I can wish.

Sometimes I want to get a K501, but most likely it will sound too similar to my K601. I've compared the graphs and they look so extremely similar!

I wonder if the K501 and K601 share drivers? Probably not...

Sorry, off topic a bit..

mr.khali · May 22, 2011 at 10:40 AM

I am loving the design of these. Let's hope they sound as good as they look!

Zombie_X · May 22, 2011 at 12:35 PM

Oh these look nice! I've always been a fan of AKG phones and this will be the next addition when they come out.

Proglover · May 22, 2011 at 1:13 PM

Quote:

tdockweiler said:
Fingers crossed that it sounds like a closed K501 or some of the wooden Audio Technica headphones...probably not, but I can wish.

Sometimes I want to get a K501, but most likely it will sound too similar to my K601. I've compared the graphs and they look so extremely similar!

I wonder if the K501 and K601 share drivers? Probably not...

Sorry, off topic a bit..

501 doesn't sound similar to 601. Many will disagree, but I liked 601 better (I think 501's overrated, I liked 500 more then both 501,601 and 70X)

*starts running*

On topic; my wallet is ready for the 550

Latest Thread Images

loopfreak

1000+ Head-Fier

CantScareMe

1000+ Head-Fier

monoethylene

1000+ Head-Fier

mikeaj

Headphoneus Supremus

CantScareMe

1000+ Head-Fier

svyr

Headphoneus Supremus

monoethylene

1000+ Head-Fier

CantScareMe

1000+ Head-Fier

mikeaj

Headphoneus Supremus

Sylverant

1000+ Head-Fier

genclaymore

Headphoneus Supremus

tdockweiler

Headphoneus Supremus

mr.khali

500+ Head-Fier

Zombie_X

Headphoneus Supremus

Proglover

Progressiveus Drummeus

Users who are viewing this thread