[Bizzel]

Quick question: how easy is it to reverse the de-foaming mod (just the inside foam, not the foam under the grilles)?

If it's fully reversible I'll give this a shot later on.

 

[Gradofan2]

Quote:

Originally Posted by Bizzel /img/forum/go_quote.gif Quick question: how easy is it to reverse the de-foaming mod (just the inside foam, not the foam under the grilles)? If it's fully reversible I'll give this a shot later on.

Its a 2 minute process... just remove the pads, reinsert the foam, and replace the pads.

I guess mine don't have foam under the grills... that I'm aware of, anyway. So... can't advise you there. Though, the pics elsewhere on this forum indicate the grills are also easy to remove and replace.

 

[Bizzel]

Thanks. When I said the foam under the grilles, I meant this

but I'm not going to mess with that part anyway.

 

[Bizzel]

Well I removed the foam okay but I want to put it back and the pads don't seem to clip in place. I'm worried about putting too much force on them.

 

[Bizzel]

Never mind, I got them back on. It just needed more force than I was happy to give it. Damn, I need new pants.

 

[Gradofan2]

Quote:

Originally Posted by Bizzel /img/forum/go_quote.gif Thanks. When I said the foam under the grilles, I meant this... but I'm not going to mess with that part anyway.

Oh... OK... yeah... I have that... never removed it. Looks like it would be pretty difficult to remove, or to reinsert.

 

[[AK]Zip]

Quote:

Originally Posted by Bizzel /img/forum/go_quote.gif Thanks. When I said the foam under the grilles, I meant this but I'm not going to mess with that part anyway.

You can put it back in the same way you pull it out. I have done it 2 times to make sure it works and have had 2 other people confirm with me that they are able to do it as well. The key is to remove it carefully.

-Alex-

 

[kool bubba ice]

Quote:

Originally Posted by Gradofan2 /img/forum/go_quote.gif Oh... OK... yeah... I have that... never removed it. Looks like it would be pretty difficult to remove, or to reinsert.

Easy to remove. Tough to put back in. The mod does increase the Soundstage & detail..The bass is better & is noticeably brighter..

 

[[AK]Zip]

Just as a note I removed the foam out of swt61's HD580's at the recent DFW meet after he loved my pair and it took me 2 minutes using needle nose pliers. I removed them perfectly without any rips or tears in the foam.

-Alex-

 

[Bizzel]

Having toyed with it a lot today, I think I'll do a Kramer mod on them and remove just the central part of the foam. I loved the extra treble but I want to keep the 650 true to its sound - removing the foam entirely made it sound a little unweildy.

Alex, thanks for the clarification.

 

[fierce_freak]

Quote:

Originally Posted by kool bubba ice /img/forum/go_quote.gif Easy to remove. Tough to put back in. The mod does increase the Soundstage & detail..The bass is better & is noticeably brighter..

I'd love to hear more comparisons between HD-650 and completely defoamed HD-650.

 

[j0shimi]

I fully agree with kool bubba ice, I noticed an immediate improvement on bass.
I have had the foam pads out for years with a bit of pantyhose to protect the driver but recently put the pads in and tried the coin mod.

Right now I'm not sure if I prefer them with or without?

 

[GreatDane]

Quote:

Originally Posted by j0shimi /img/forum/go_quote.gif I fully agree with kool bubba ice, I noticed an immediate improvement on bass. I have had the foam pads out for years...

I thought kool bubba ice was referring to the foam at the rear of the driver.

 

[Gradofan2]

Quote:

Originally Posted by kool bubba ice /img/forum/go_quote.gif Easy to remove. Tough to put back in. The mod does increase the Soundstage & detail..The bass is better & is noticeably brighter..

Are you refering to the "entire" mod, removing both the foam under the ear pads, as well as the foam behind the screens on the back?

Or... are you talking about the "increase in detail and soundstage, etc." as an incremental increase after removing only the foam from behind the screens on the back (although you may have previously removed the foam from under the ear pads).

I'm tempted to try removing the foam from behind the screens on the back (I've already removed the foam from beneath the ear pads a couple of years ago)... if... I thought I could reinsert it without too much difficulty - especially for my HD650s.

 

[Bizzel]

What's the coin mod? Is that the same as removing just the centre of the foams?

When I removed the foams (I left the smaller foams behind the driver intact) I heard much better treble but the bass was slightly muffled, as if it was coming from the next room. The soundstage grows a lot, it's very impressive like that of the K701 but at the same time it loses accuracy and it becomes harder to place instruments.