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Author Topic: Tascam TH02 Measurement  (Read 19981 times)

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spoony

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Re: Tascam TH02 Measurement
« Reply #70 on: November 28, 2013, 06:27:52 PM »
I'm glad you're enjoying these too ;), the HD681 EVO are probably more competent for the price, but, as illustrated in Solderdude's guide, they take a whole lot of work to get the most out of them. These, however, are more readily available in the whole of America and pretty easy to fix.

Quote from: hans030390 on November 28, 2013, 12:04:19 PM
I don't mind the dip around 4-5KHz, as it makes it easier for me to listen without fatigue. It's much better than having a peak around that area for me. I can handle 7-10KHz peaks more easily.
Based on this graph:


...and Tyll's measurements I went ahead and EQ'd as follows:

Peak 1
CF: 30Hz
Q: 0.3
Gain: 3dB

Peak 2
CF: 3200Hz
Q: 1.1
Gain: 4.0dB

Peak 3
CF: 5700Hz
Q: 1.3
Gain: 3.0dB

... to approximate a watered-down Olive-Welti target. The midrange peaks help with perceived resolution and imaging, I added just enough to avoid stridency at my listening levels. I also compensated for the ~7KHz peak because sometimes it does get in the way.

Now I need to figure out how to order a pair of HM5 pads without PayPal :/
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Thujone

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Re: Tascam TH02 Measurement
« Reply #71 on: December 01, 2013, 01:07:54 AM »
Thanks for the modding notes, hans. I still need to play with these more. Today I took the backs completely off and c61746961 is right, they sound pretty sweet like this. It seems like there is a midbass hump, as mentioned, but I think I had similar results with the backs on (with dampening foam stuck to the bottom). I think it would be sweet to grind off the outside of the backs while maintaining the clips and then attach a red metal screen. They work pretty well as open cans, that's for sure. Where is the best place to buy the dynamat to stick to the driver magnet? I thought about using some blue tack that I have on hand, but it's not as dense as I understand. Looks like I need to get the HM5 pads.

EDIT: As a last resort for pads I have on hand, I threw the Shure 840 pads on, and while they are on the large side, I'm enjoying the sound so far! The cans are still open, but they aren't as dark anymore.
« Last Edit: December 01, 2013, 01:19:44 AM by Thujone »
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Hands

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Re: Tascam TH02 Measurement
« Reply #72 on: December 01, 2013, 04:37:52 AM »
c61746961, not sure where you're located, but Sonic Electronix sells a version of the FA-003/HM5 and spare pads as well. They just go under a different brand name. They even have angled versions of the pads. Might be an option...don't think they require PayPal.

Thujone, you can get 1'x1' square sheets online for pretty cheap. Check Amazon and eBay. Sometimes folks have some on hand they'll part with. Alternatively, look for a similar material at Lowes or Home Depot. It might be re-badged as a product for sealing the roof on RVs and such. They all have that similar black base material and generally have the foil topping as well.
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spoony

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Re: Tascam TH02 Measurement
« Reply #73 on: December 04, 2013, 03:25:35 AM »
Quote from: hans030390 on December 01, 2013, 04:37:52 AM
c61746961, not sure where you're located, but Sonic Electronix sells a version of the FA-003/HM5 and spare pads as well. They just go under a different brand name. They even have angled versions of the pads. Might be an option...don't think they require PayPal.
Ordered, thanks!
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OJneg

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Re: Tascam TH02 Measurement
« Reply #74 on: December 16, 2013, 02:36:11 AM »
Just got these in. I'm noticing a lot of treble bite (more than the plots seem to indicate) and some midrange weirdness. Bass is good though. I'll try to measure them myself tomorrow.
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OJneg

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Re: Tascam TH02 Measurement
« Reply #75 on: January 04, 2014, 02:25:22 AM »
Here's my own plots of the TH02 w/ and w/o TP. I stuck it in the pad instead of putting it on the baffle. Very satisfied with the sound now. Still a bit "snappy" and the midrange congestion is still there. If larger, more comfortable pads can maintain this same sound more or less, I'll be pleased.

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gelocks

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Re: Tascam TH02 Measurement
« Reply #76 on: January 04, 2014, 05:38:51 AM »
Quote from: ultrabike on November 20, 2013, 07:48:36 AM
Marv lent me his TH-02s. They are plenty good, though I had some problems getting seal. They also seemed to fit me a bit too low even with the cups pulled all the way up.

I still felt a bit of wonky mids, but less than some other closed cans I've heard. Bass was well extended and clean when I got decent seal. To my ears the overall balance is on the laid back side of things.

Awesome :)p1 for the buck.

Some results (compare with after):

Frequency Response

Distortion right

Distortion left

CSD right


Now... wouldn't it be interesting to try these with MrSpeakers Alpha Pads?!!?? :-p (if the HM5 fit, the Alpha Pads would probably fit as well...)
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Hands

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Re: Tascam TH02 Measurement
« Reply #77 on: January 04, 2014, 07:04:38 AM »
Last I checked, the HM5 pads were noticeably smaller than the Alpha Pads, hence the reason folks had so much difficulty originally getting the HM5 pads on the T50RP. The HM5 pads already border on being slightly too big for the TH-02.

That said, there is an angled version of the HM5 pads available here: http://www.sonicelectronix.com/item_66627_NVX-XRE100A.html

Different brand, same thing. They also have the non-angled versions.
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Hands

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Re: Tascam TH02 Measurement
« Reply #78 on: January 04, 2014, 11:22:23 AM »
I cut 4 smallish jergpad-style holes on the bottom of the HM5 pads and added a very tiny ring of the fiberfill damping material directly behind the driver in addition to my prior mods. Subjectively, this brought back some of that missing midrange detail and might have made them less bassy and warm, though I do not know if measurements would reflect this.
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Thujone

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Re: Tascam TH02 Measurement
« Reply #79 on: January 04, 2014, 02:44:19 PM »
Where did you order your HM5 pads from? I ordered mine from mp4nation forever ago and still haven't received them.
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