Quote:   For practical reasons I did things slightly differently to BMF - my mod configuration with measurements is back on page 540, post 8093. We think I have different driver paper to BMF, and since my 840 pads were sans dust cover, and earside felt was removed, I ended up with...

mink70,   When I first got my T50RPs and listened to them, I was immediately struck by the muffled vocals you mentioned. The poblem with them, in their stock form, is that their frequency response is very midrangey, being pretty significantly rolled off through the upper mids and highs, and...

Quote:   Measuring headphones with REW is surprisingly painless.   One clarification I wanted to give - there is a difference between providing phantom power, and providing microphone preamplification. Preamplification is needed to bring a microphone output up to line level, whilst...

Since the capsules are so cheap, I'll probably give this a go too. If I'd realised that decent capsules could be acquired for such a low price, I probably would have got on this sooner! Oh well, live and learn. Could you point me towards a schematic for the plug-in power box? I'm pretty hopeless...

This is an interesting approach, symphonic. I was thinking of doing something similar before, but with the Roland Binaural mics (I forget the model name now). Unfortunately, I ran into the problem that they require plug-in power, which my audio interface can't provide (and the full beans 48V...

If it helps, I've got Senn 558s, which were around £110 when I bought them a few months ago, which is a very similar price. I thought for that much, they were very good value for money. A great all-round headphone. I don't think anything about their sound immediately stands out as exceptional...

So, I took a page from Twinster's book (you cunning fox, Twinster), and built a budget measurement rig from a cheapo SPL meter I got from amazon (probably too cheap - it's not great, and I'll go into why a little later). I was lazy though, and instead of mounting it in a box, I just duct taped a...

Sorry to ask a question that I'm sure has been discussed before - on the 840 pads, remove the central foam, or leave it in place? Mine just arrived - I managed to squeeze them on the T50s leaving the foam in place, but it's holding the pads in a slightly oval shape.   For anyone who's...

I'll sketch up something very rough, but of approximately the right dimensions and see if I can get a quote sometime in the next week and a bit. If it's not prohibitively expensive (I'm hoping for something of the same order of price as the stock headphones, fingers crossed) I'll start drawing...

About a year ago, we got some optical grids (for focussed Schlieren - don't ask, was a total waste of time) 3D printed by an online company - Shapeways - we uploaded a CAD model of the part, and they printed it and posted it directly to us. The grids were quite small parts, about 50x70x5mm, and...

I'm still hoping to get some cups made (3D printed) over the next few months. I'll go with an open design - probably something that looks vaguely like the HE500 cups with a large flat grille that I can later cover if I decide that open just won't work. I'll definitely keep you guys updated if I...

Watched the video - sounds a little like what I hear when the sample rate is set incorrectly. I'm on linux at the moment, so I can't check, but if you go to start > type sound in the box on the start menu > advanced, then look for the sample rate and check it looks normal. I only mention this...

Congrats on your 558 purchase. They're a fantastic little pair of headpones, with a nice upfront midrange to keep things interesting, as you've already noticed. Not so sure about your headache problems - I've never found my 558s fatiguing. Then again, I am a Grado owner, so maybe I'm more...

My channel imbalance isn't noticeable during normal music listening. It becomes slightly more obvious if you play mono music through them. I only really noticed it before when I was running sine sweeps through to listen for resonance problems. It becomes very obvious when you do this, as the...

Quote: Whoops - I skimmed over the last couple of pages and obviously missed that bit. I'm going to play around with some things a bit more over the next few days, such as paxmate on the cup side of the baffle, etc etc. Will report back if I make any breakthroughs (I think most of this...

Yes, it's bizarre. At this point, I would assume that my experience is pretty anomalous. For anyone interested, the paxmate I had on the ear-side had a little square cut out for the fully open vent hole, but covered the 3 partially open vent holes around the driver. I wonder if that's something...

I always thought it would be an advantage to have a true flagship headphone. Not many people will buy it of course, and you won't make much money compared to the amount you get selling millions of low-end IEMs. But, it at least proves that you can do it, that if you really want to, you can make...

Holy cow this thread moves fast at weekends.   Quote: I had a big 1k resonance problem when I had the paxmate earside. I know it sounds unlikely, but removing that paxmate seemed to magic the problem away - I can offer no expanation as to why that happened.    And for some...

Whilst there are two main mods going around here, I think you're right in saying they're essentially addressing the same problems using very similar techniques. I personally want to keep things as reversible as possible, so I've not gone down the transpore route, and I've ended up with a set of...

Bending the headband a bit on a pair of Grados does help the comfort a lot, but they'll still never be as comfortable as the other headphones you've tried so far. You could also put different pads on the Grados, but that will affect the sound - not necessarily in a bad way, but it'll certainly...

If I were in your position, I would personally be looking at getting a cheapish DAC/amp combo - something like the E7, and then investing in the best Grados I could afford with the remaining budget (maybe a 325 or a used RS2 or something). I'm sure many people will come on here and say that the...

Disclaimer: I want to just stress that these are great sounding headphones. I'm mentioning only the flaws in this post   About the drivers, I was actually getting close to coming to the same conclusions the other night. I've still been trying to track down the source of this 1k resonance...

I picked up some tungsten putty today, and it's a fantastic material. If a cheap way of making our own can be brewed up, that will be the material of choice, I'm sure. Shame the fishing version is so expensive. I also tried using some of that foam I stole borrowed instead of cotton wool - I'm...

I personally fluffed it up into a sort of sheet, then stuffed it in the cup, covering the centre post too. I assumed that post wasn't there for anything other than holding the hinge for the cup... but I'm hardly the most seasoned modder, so hopefully someone else will chime in too.

A quick update from me if anyone's interested - I went with a small reflex dot of electrical tape, and a small amount more cotton wool in the cups, as prescribed by mrspeakers (thanks for the help), and it's helped smooth things out quite a bit. I'm finding that it's very sensitive to how much...