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K340 KT88 mod guide :) - Page 2

post #16 of 229
Thread Starter 
The more the marrier
post #17 of 229
That's a project both interesting and aesthetically done. Also, photo documentation is quite good.
The driver though looks a bit like a spaceship to me.

Looking forward to the re-cable and wood modding.
post #18 of 229
Yes kt88 is a god in israel ,his mad modding skillz are known all througout the land
post #19 of 229
Quote:
Originally Posted by philodox View Post
Well, we've been planning on doing this for some time now and will probably still go ahead... even if only for our own enjoyment.
Yes, please still do it! I've really been looking forward to the guide

KT88 - The more the merrier indeed
post #20 of 229
Thread Starter 
It sure is

These mods really bring out the best of this headphone, I think everyone should try them. Atleast these that do not need opening the cup and resoldering which is the only mod that can damage the headphone.

After letting the cans play for a acouple of days I can surley say they are a greay improvment over the stock. Sound is very very accurate and detailed, yet vey balanced. Bass is there, it's punchy, its accurate, and its detaild and tight. But it's about the same as before in terms of loudness. In no point does the bass coems over something else. Absolutley amazing.

All K340 owners, try these mods. There is no chance you'll be dissappointed!
post #21 of 229
Give me your address and I will ship my for mods right after

Where did you bought the fabric. Or can you tell which type is this. I know it sounds silly, but...

Quote:
Originally Posted by KT88 View Post
It sure is

These mods really bring out the best of this headphone, I think everyone should try them. Atleast these that do not need opening the cup and resoldering which is the only mod that can damage the headphone.

After letting the cans play for a acouple of days I can surley say they are a greay improvment over the stock. Sound is very very accurate and detailed, yet vey balanced. Bass is there, it's punchy, its accurate, and its detaild and tight. But it's about the same as before in terms of loudness. In no point does the bass coems over something else. Absolutley amazing.

All K340 owners, try these mods. There is no chance you'll be dissappointed!
post #22 of 229
Thread Starter 
Hey,

I have no problem in doing these mods for you. I only did them once so far on mine, but see no reasone why that should stop me Maybe I'll start moding these like Larry does, K340-AM (Anatoli Modded)

As to the fabric. First I wanted to use the same fabric that is used by Omega-Audio (Manufacture of RenAudio.com) which is located in Israel, but than I had a great idea. I used pantyhose (I think that's the right word). It costs like 1$ apair, its very light and transparent to sound, and it very flexible.
post #23 of 229
Quote:
Originally Posted by KT88 View Post
Hey,

I have no problem in doing these mods for you. I only did them once so far on mine, but see no reasone why that should stop me Maybe I'll start moding these like Larry does, K340-AM (Anatoli Modded)

As to the fabric. First I wanted to use the same fabric that is used by Omega-Audio (Manufacture of RenAudio.com) which is located in Israel, but than I had a great idea. I used pantyhose (I think that's the right word). It costs like 1$ apair, its very light and transparent to sound, and it very flexible.

I have vpivinylspinner (Jeffs) old Headfiled recabled and modded by larry K340s.

You guys think he has (Larry) already done these mods to mine!!I love these phones! By the way.
post #24 of 229
The pair of K340s I bought (Hopefully coming tomorrow *fingers crossed*) has the circuit bypassed and the casing already stuffed. The pads are pretty worn out; is it easy to replace the pads (If so, where can you order AKG pads to replace them and which ones are most often used?)? It'll still have the standard screen, but I'll probably leave modding/changing that to Larry as I imagine I'll probably get them Headphile'd/woodied. It seems Larry has come up with a very efficient method/material for the screen, but it'd be great if I could do it myself and get the exact same results. What about replacing the elastics?

Quote:
Originally Posted by Headphile
I either replace those with more beefy elastic or adjust your current elastics if I deem them worthy.
Is your method the same method that Larry uses to adjust them? What about replacing them with "more beefy elastic"?

I imagine if doing these mods will yield the same results as Larry's, and if I can do them myself, then it'd be a great way to save money on bringing a pair of K340s up to par (Then I just pay half the normal cost as I just have to get them woodied ).
post #25 of 229
Thread Starter 
In my case the lastics were ok, so no need to replace them. replacing them is no problem actually.

The fabric used in the screens doesn't matter as long as it's sound transparent, and as long as it feels nice on your ears.

Replacing the pads is no problem, I found a very easy way of puting the new ones on (they are smaller than the originals).

Contact Evelyn at:
enagy@rw-soundsystem.de
she'll help you with it.

BTW, what is your casing stupped with?
The stock has cotton. I think about trying foam.
post #26 of 229
Quote:
Originally Posted by KT88 View Post
In my case the lastics were ok, so no need to replace them. replacing them is no problem actually.
How do you go about replacing them? Will this be added to the guide (Or will Philodox's guide cover this?)?

Quote:
Originally Posted by KT88 View Post
Replacing the pads is no problem, I found a very easy way of puting the new ones on (they are smaller than the originals).
Smaller than the originals? What exactly are these replacement pads? They can't actually be new K340 pads, can they? I've seen other modded K340s with velour pads. Are these K601/701 pads (I'm not sure what pads are popular when replacing the pads)?

Quote:
Originally Posted by KT88 View Post
BTW, what is your casing stupped with?
The stock has cotton. I think about trying foam.
"Dynomat," according to nikongod. Apparently it's similar to bluetac, but better.
post #27 of 229
Thread Starter 
Quote:
How do you go about replacing them? Will this be added to the guide (Or will Philodox's guide cover this?)?
It's very simple, just pull out the original elatics. Thann, take another elastic material (like girls use for they're hair ), and place it in the same place. It fits (or shall I say Fitz ) exactly.

Quote:
Smaller than the originals? What exactly are these replacement pads? They can't actually be new K340 pads, can they? I've seen other modded K340s with velour pads. Are these K601/701 pads (I'm not sure what pads are popular when replacing the pads)?
I guess these are the K271 veloure pads. The item number is:
Velour pads 2955M1002

Quote:
"Dynomat," according to nikongod. Apparently it's similar to bluetac, but better.
Nice. I tought about puting foam (alot of it ) and puting blutak in the back so ther will be no bass resonance.
post #28 of 229
I found this in one of Philodox's old posts and I figured it might be somewhat helpful:

Quote:
Originally Posted by philodox View Post
1. One of the simplest and most effective mods that you can do is bypass the circuit board for this driver. This turns the dynamic driver from 'ok' to 'quite good' in my mind. Makes it much more controlled.

Stock: Cable --- Circuit Board --- Dynamic Driver --- Electret
Modded: Cable --- Dynamic Driver --- Circuit Board --- Electret

2. Removing all the cotton will tune down the bass a little, but tighten everything up and add more clarity. This is my preference. If you want to leave some cotton in there I would replace it with fresh stuff as it has the tendancy to compact over the years.

3. Taping up the back of the housings [where the cable enters/exits] with acoustic tape [electrical tape would probably work just as well] will improve the imaging and make the soundstage more natural.

4. Recable the headphones, dual entry, with copper wire. I'm not going to discuss the merits of headphone recables in this thread, but this is an essential mod in my mind. My personal pair is recabled with Headphile BlackGold cable, which uses a combination of high purity copper magnet wire and pure silver solid core. Silver on it's own does not mesh with the sound of the K340 very well in my opinion, though it might be a good fit for the 'bass heavy version' I suppose.

5. Remove the plastic screen and replace with acoustically transparent speaker cloth. I think that some of the weird resonances that people complain about with the K340 are caused by this screen. Also improves clarity and makes low level detail stand out more.

6. Fit is key with these headphones. Replace elastics if necessary. K501 headband improves fit a bit for me and looks sexy. Velour earpads are more comfortable, seal better, and tune up the bass a bit.

7. Clean them, inside and out. Gives you peace of mind and removes any residue that might interfere with proper operation.

Hope that helps.
post #29 of 229
Thread Starter 
steps 1, 5, 7 I have done.

Steps 2, 3 I tried but didn't like the result's.

Step 6 was not needed in my case. the elastics were fine, so I just sreched them a bit.

Rewire is on the way. The Copper core + Silver sorround 18gauge wire is on its way to me already

2 more things I want to add:
1- unlike Phildox my expirience was diffrent. Removing the cotton actuaaly gave me moe resonanse from the plastic cup which hurts the clarity of the headphones.
2- taping the back gave me more bass than usual, and that's it

BTW, I just preapered 2 more grills (just cut the plastic and smooth it down, didn't put the fabric in yet) for Sergei's (Blackmore) K340's which are schedueled to arrive somewhen in the not so far future
post #30 of 229
Azure the contact for AKG parts in the U.S. is

Frank Rodriguez
Sales/Parts Administrator
Harman Pro North America
8500 Balboa Blvd
Northridge, CA 91329
Ph: 818-920-3279
Fax: 818-920.3208

FRodrigu@harman.com

Call him on the phone, as he's not good at replying to emails. The pads are part # 2955z2601 and they are around $13.00 each, with shipping around $4.00. They were back ordered, but should be in any day. They are a little snug, and I prestretched the vinyl flange, and started from one side and worked my way around. You can use a small amount of dish soap on the flange of the headphones, as it will dry and not remain slippery. I didn't need to use soap, but some have had a hard time getting the pads on. He has a few leather K501 headbands left in stock that are easily modded to fit the K340. Philodox and RedLeader will include the headband mod in their K340 modding thread.

Quote:
Originally Posted by markmaxx View Post
I have vpivinylspinner (Jeffs) old Headfiled recabled and modded by larry K340s. You guys think he has (Larry) already done these mods to mine!!I love these phones! By the way.
markmaxx, I've had the pleasure of listening to your headphones at the last Dallas meet. Larry has performed all the mods on them. I can't remember if that pair has the fabric screens or the old version dremeled plastic screens Larry used to do. I wasn't aware Jeff had sold them, I hope he finds time to stay in the hobby. He's a great guy! In any case those are fantastic sounding K340's, and I wouldn't mess with success!
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