Sennheiser HD555 and HD595 internal comparison shots

[mikebeauchamp]

Thanks to ivant for supplying pictures of the insides of his HD595's in my previous thread (HD555 internals. Anyone want to help compare to HD595 (For future Mods)).

Here are some comparison images between the insides of my HD555's and ivant's HD595's.

QQQ said that the HD555 and HD595 share the same drivers, and they certainly appear identical.

This just leaves the actual construction of the two headphones to justify the price difference. The ONLY construction difference I can see is that the HD555's have a piece of foam stuck onto the inside of the rear vents blocking about 40% of the vents. In marketing terms, this would be the "special internal Surround Reflector, which generates an extended spatial sound field,making it the ideal headphone for home theater,as well as music."









Mike

[lucky]

Very interesting. I wonder what they sound like with-vs-without the foam.

[Quaddy]

Originally Posted by lucky

Very interesting. I wonder what they sound like with-vs-without the foam.

i de-foamed my 555's and actually preferred them as they were, they sounded harsher without IMHO, a bit thin.

[1Time]

Very nice pics and comparison. Thank you. I have owned the HD555 and HD595 (120 Ohm, not the 50 Ohm) at different times. I ran the HD555 from a SB Live Value sound card with a $100 portable amp and the HD595 from a Harmon Kardon receiver, and they sounded quite different with the HD595 a noticeable step up. I'm a little surprised to see the internals appear to be identical except for the foam.

The "special internal surround reflector" is the triangular piece of plastic protruding into the diaphragms of the HD555 and HD595, not the foam in the HD555.

From this thread and my experience with these two headphones, I now attribute the factors responsible for the HD595's superior sound to be its ear cups, possibly different cables (?), what I plugged them into, and their Ohm ratings. Between the two, the HD595 seemed much more capable of scaling well with better associated equipment. I would be surprised to find them sounding similar if I compared the two 50 Ohm models side by side with the same equipment, especially with a better source and amp than I used. Hopefully those who have compared both in this way will post.

Originally Posted by mikebeauchamp

This just leaves the actual construction of the two headphones to justify the price difference. The ONLY construction difference I can see is that the HD555's have a piece of foam stuck onto the inside of the rear vents blocking about 40% of the vents. In marketing terms, this would be the "special internal Surround Reflector, which generates an extended spatial sound field,making it the ideal headphone for home theater,as well as music."

[QQQ]

The "special internal surround reflector" is the triangular piece of plastic protruding into the diaphragms of the HD555 and HD595

No, it's not it.

If there's "reflector" in 595, show me the descryption or advertisment where it stated.

[1Time]

Originally Posted by QQQ

No, it's not it.

If there's "reflector" in 595, show me the descryption or advertisment where it stated.

Oh really? That's new to me. Then I stand corrected. You seem quite positive, so I see no need to go looking around for proof. Thank you.

[mikebeauchamp]

Last night I took the foam out of one side only and swapped the headphones around on my head while listening to some music outputted as mono (thanks for that option rockbox).
I actually noticed that removing the foam slightly decreases the treble, which I initially thought was bad (considering I find the HD555's to lack high-end). On further listening though, I found that the added treble of foam piece (excuse me, I mean "surround reflector") just sounded messy and blurry anyways. But it was damn subtle...

That's as far as I'll go into the audiophile jargon, as I'm more interested in just comparing the internals of things and debunking the justification for the high price tag of things like the HD595's.

Mike

[Goit]

Originally Posted by QQQ

No, it's not it.

If there's "reflector" in 595, show me the descryption or advertisment where it stated.

Yeah, guy at sennhiser also told me that only the HD555 has the surround reflector.

[nathan_h]

According to Sennheiser, both contain a 45 degree angle to the transducer to emulate an in-room speaker's relationship to the ear:

UltimateAVmag.com: Heads Up

I don't know whether this is the same as the "reflector" mentioned in their marketing literature. Other models with this feature:

HD 800
PXC 350
PXC 450
HD 595
HD 555
HD 515
PC 350
HD 380

[pp312]

I've owned both 555 and 595 and they sounded the same to me on classical/orchestral music. If I buy either again, and I'd like to, it'll be the 555.