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Orthodynamic Roundup - Page 1460

post #21886 of 23426
Quote:
Originally Posted by kalbee View Post

Wasn't Angel Hair of the sort?

Though I can't remember all that well I've been too far from this for way too long :S

 

There was something else I think but I can't put my finger on it...

 

Start with the pads, work with seal, distance from ear, clamping pressure.

post #21887 of 23426

I seem to recall that the K340 simply didn't respond to damping in the way that an Ortho would. I did have some subjective success with adding felt to the front, possibly reducing some of the reflection off the giant driver exposed by modding the plastic screen. Never got rid of the coloration. Just accepted it. 

post #21888 of 23426
Quote:
Originally Posted by JadeEast View Post

I seem to recall that the K340 simply didn't respond to damping in the way that an Ortho would. I did have some subjective success with adding felt to the front, possibly reducing some of the reflection off the giant driver exposed by modding the plastic screen. Never got rid of the coloration. Just accepted it. 

 

Thanks to all for the feedback and information. I checked the pad flap seal at the cups and they seem to be in good shape.

 

The photos in wikiphonia seem to show the electret driver is the Big one and the smaller dynamic driver is nested underneath. Is this correct? If so, the dynamic driver has a ring of (presumably) tiny vent holes all around the perimeter on the rear side. There is venting, and quite a lot of it, at the ~ 1 x 4 cm rectangular opening in the cup floors where the cable wires enter the cups. I'm not sure, but it looks like the venting may diminish with vertical rotation of the cups on the headband hanger hinges.

 

I tried modding:  with and without the stock white filament damping material x with and without Paxmate in the cups x felt vs. open cell foam over the ear side of the baffles. Results? No improvement in bass, odd SQ, and still treble Bright causing hearing fatigue after 5 to 10 minutes, even on lower volume settings. 

 

Next, I tried HiFi Man Leather pads. Results? Now there is Bass! but too much, and the treble is still shrill. There may be a way to crack this nut, after all.

 

A friend sent these to me. He has 2 more sets of these that sound good to him, unlike this set that did not sound good to him. One is modified (I don't know anything about the mod config) and I believe the other one is stock.

post #21889 of 23426
Quote:
Originally Posted by bluemonkeyflyer View Post

 

Thanks to all for the feedback and information. I checked the pad flap seal at the cups and they seem to be in good shape.

 

The photos in wikiphonia seem to show the electret driver is the Big one and the smaller dynamic driver is nested underneath. Is this correct? If so, the dynamic driver has a ring of (presumably) tiny vent holes all around the perimeter on the rear side. There is venting, and quite a lot of it, at the ~ 1 x 4 cm rectangular opening in the cup floors where the cable wires enter the cups. I'm not sure, but it looks like the venting may diminish with vertical rotation of the cups on the headband hanger hinges.

 

I tried modding:  with and without the stock white filament damping material x with and without Paxmate in the cups x felt vs. open cell foam over the ear side of the baffles. Results? No improvement in bass, odd SQ, and still treble Bright causing hearing fatigue after 5 to 10 minutes, even on lower volume settings. 

 

Next, I tried HiFi Man Leather pads. Results? Now there is Bass! but too much, and the treble is still shrill. There may be a way to crack this nut, after all.

 

A friend sent these to me. He has 2 more sets of these that sound good to him, unlike this set that did not sound good to him. One is modified (I don't know anything about the mod config) and I believe the other one is stock.


Before you do anything else try a set of velour pads.

post #21890 of 23426
Quote:
Originally Posted by Hutnicks View Post


Before you do anything else try a set of velour pads.

Will do but IME velours deliver less bass. These K340's need more bass and less treble.

Thanks
post #21891 of 23426
Quote:
Originally Posted by bluemonkeyflyer View Post


Will do but IME velours deliver less bass. These K340's need more bass and less treble.

Thanks


Yes and no. The reason I love velours (other than comfort and no sweat ) is the pad itself is modable. Start with the raw pad see how they sound. Get some really soft cheap surgical tape, plastic not the paper stuff. Around the inside of the pad starting from the driver side use 3/16 or 1/4 inch strips of the tape to seal the porosity of the pad. Repeat the process again from the earside of the pads in until you find a sound you can live with. You should be able to get to a comfortable Bass level and a decently balanced treble (mostlybiggrin.gif) this way.

 

When you get to the config you want you can make a permanent mod by smearing a thin layer of silicone sealant on the velour with your finger and pressing it in with an icecube to seal the velour permanently.

 

There's my 2 cents for the daywink_face.gif

post #21892 of 23426
Quote:
Originally Posted by Hutnicks View Post


Yes and no. The reason I love velours (other than comfort and no sweat ) is the pad itself is modable. Start with the raw pad see how they sound. Get some really soft cheap surgical tape, plastic not the paper stuff. Around the inside of the pad starting from the driver side use 3/16 or 1/4 inch strips of the tape to seal the porosity of the pad. Repeat the process again from the earside of the pads in until you find a sound you can live with. You should be able to get to a comfortable Bass level and a decently balanced treble (mostly:D ) this way.

When you get to the config you want you can make a permanent mod by smearing a thin layer of silicone sealant on the velour with your finger and pressing it in with an icecube to seal the velour permanently.

There's my 2 cents for the day:wink_face:

Now that is clever! Thanks so much.
post #21893 of 23426

Those AKG frames are just a pain to crack open and damp, and my experiments with the Sextett/SFI transplant were very frustrating. I'd spend more time shoving felts and other materials in front of the driver for time and sanity sake.

 

Have you ever seen what I did with my HE-6? I glued a nylon dust cover onto the earpad retention ring, put a tiny but of twaron angel hair in the middle, then a layer of soft felt on top before attaching the pad (J$ Beyers). It's essentially a little twaron pillow. The pads give me better bass resposne, and the twaron pillow chops down the treble.

post #21894 of 23426

Quick comparison between the modded HP-50 and the HD 600 to a few tracks of this sort.

 

I went for neutrality modding the HP-50; not surprisingly, the two phones have a similar tonal balance. The 600 are somewhat brighter and sound a bit steely - it's not a veiled pair. The 50 have a bit more bass extension. Similar otherwise.

 

Not sure how big the soundstage on the 600 is normally supposed to be, but on my second-hand pair with reasonably erect pads the stage is kinda small and instruments tend to clump towards the middle. Which is fine, the 50 can't extend the stage much, either. I thought the 50 were more open to the sides and the 600 more to the middle. With this type of music, a small stage isn't an issue.

 

What sends the 50 gnawing on victory cake is smoothness and responsiveness. I thought they could give better PRaT and a more substantial-sounding rendering of the music.


Edited by vid - 7/28/13 at 3:33pm
post #21895 of 23426
Quote:
Originally Posted by Armaegis View Post

Those AKG frames are just a pain to crack open and damp, and my experiments with the Sextett/SFI transplant were very frustrating. I'd spend more time shoving felts and other materials in front of the driver for time and sanity sake.

 

Have you ever seen what I did with my HE-6? I glued a nylon dust cover onto the earpad retention ring, put a tiny but of twaron angel hair in the middle, then a layer of soft felt on top before attaching the pad (J$ Beyers). It's essentially a little twaron pillow. The pads give me better bass resposne, and the twaron pillow chops down the treble.

 


K340 is much easier to open than K240 series imo. At the very least when getting an untouched K340 one should either swap out the old cotton with new cotton or replace with actual felt/damping materials. Also I found the Sextetts I owned very briefly to be very disappointing in sound, I'm guessing you think the same if you're trying to transplant SFIs in there. If anyone has recabled their K340 to dual entry or seen it done, please tell me how to do it properly, with strain reliefs and everything.


Edited by mypasswordis - 7/30/13 at 2:27am
post #21896 of 23426

The one side that worked on my LP Sextett sounded promising. I'm pretty sure AKG updated the drivers from EP/MP to LP, so depending on which version you got, try the other one, too, if you didn't fancy the sound.

post #21897 of 23426
Quote:
Originally Posted by vid View Post

The one side that worked on my LP Sextett sounded promising. I'm pretty sure AKG updated the drivers from EP/MP to LP, so depending on which version you got, try the other one, too, if you didn't fancy the sound.

I had both mp and lp sextetts, neither of which I would take over a ksc75.
post #21898 of 23426

Interesting. What was the problem?

 

I have the K 241 and K 250, both using Sextett tech. I'd take, and did take, them both over the KSC75.

post #21899 of 23426

I dunno, I guess I couldn't get over the mid-bass hump on the MP and the overall staleness of the LP. Both had the resolving power of a rock. I've never heard a K250 but Wualta has good things to say about it other than the rolled off bass and I trust his hearing, so maybe it sounds a lot better than Sextetts.

post #21900 of 23426

Strange - I thought the LP sounded aggressive if anything. I wouldn't think the K 250 more than a lateral upgrade, but who knows.

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