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Post by madmac on Oct 26, 2013 14:06:48 GMT
I'm currently comparing my K271 studio with AKG velvet earpads to the filtered HD681-B with velours earpads and the difference is stunning ! It's like the sound on the K271 is half dead compared to the HD681-B. Now I hear totally recessed highs on the K271 which I didn't hear in direct comparisment to the Beyerdynamic DT770 before. Never knew there would be this much of a difference between several pairs of headphones. The Superlux are simply much better on every account. At 1/4th (with mods) of the price. What the hell Maybe on the AKG I'm hearing this "veil" I read about. It sounds like there's to much cloth over the drivers. It doesn't sound as open as the Superlux or others. Even the 1980 build Sony DR-S5 sounds better ! I guess the AKG are allready with one foot out of the door now. They're my most expensive ones but they sound the worst.
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proid
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Post by proid on Oct 26, 2013 17:10:12 GMT
May be you prefer bright headphone, i don't doubt that the hd681B is better than K271 but it has really big peak in 7khz and sound very harsh
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Post by madmac on Oct 26, 2013 17:21:13 GMT
No, mine has the filters in them that takes away those peaks. Before those filters I couln't listen to it for even five minutes
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proid
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Post by proid on Oct 27, 2013 1:41:48 GMT
No, mine has the filters in them that takes away those peaks. Before those filters I couln't listen to it for even five minutes Congrats, HD681 with a filter is the best money can buy
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Post by madmac on Oct 27, 2013 11:43:47 GMT
You can be shure of that ! And now with these velours pads comfort is awesome !
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Rabbit
Administrator
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Post by Rabbit on Oct 27, 2013 11:56:13 GMT
It is amazing value for money. I reckon Superlux need to take a listen with the filter and build them in to the headphone!
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Post by chinook9 on Oct 27, 2013 15:20:40 GMT
You can be shure of that ! And now with these velours pads comfort is awesome ! Do the new pads change/improve the SQ?
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solderdude
Administrator
measureutternutter
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Post by solderdude on Oct 27, 2013 16:08:05 GMT
I have these pads coming my way (e-bay pads but they look the same). In about 2-3 weeks I may know the answer to how they measure (and sound)
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Post by chinook9 on Oct 27, 2013 16:29:07 GMT
I have these pads coming my way (e-bay pads but they look the same). In about 2-3 weeks I may know the answer to how they measure (and sound) I look forward to hearing your evaluation. I saw Beyer DT770 pads on eBay for $6.69 + $1.99 for shipping from the same vendor who wants $19.99 + $2.41 for the K241 pads. The pictures and dimensions for the Beyer and K241 pads are identical so I may go ahead and take a shot with the Beyer pads.
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solderdude
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Post by solderdude on Oct 27, 2013 16:41:29 GMT
The Beyer pads are too small, they won't fit AND change the sonic signature as well (DT770 pads is not the same as DT990 pads even though they look the same from the outside).
Shure SRH-940 velour pads can be used even though they are oval. They need to be stretched to their limit to fit.
The Chinese pads may be the best bet.
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Post by chinook9 on Oct 27, 2013 16:53:23 GMT
The Beyer pads are too small, they won't fit AND change the sonic signature as well (DT770 pads is not the same as DT990 pads even though they look the same from the outside). Shure SRH-940 velour pads can be used even though they are oval. They need to be stretched to their limit to fit. The Chinese pads may be the best bet. Thanks Frans, I may just wait and see what you think of the Chinese velour K241 pads. I am using spare SRH840 pads and I believe your tests indicated they were pretty close. The pleather doesn't bother me as far as sweating goes.
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Post by madmac on Oct 27, 2013 19:12:25 GMT
As to the Chinese velours pads, I did hear a difference when i'd put on one velours on and one pleather. The velours made the overall sound a bit softer, thighter bass and the highs softened slightly more. Still the Superlux is a bit screamy compared to other headphones, but nicely detailed in the pronounced highs. I do would trust it to do monitoring on recordings, but for hifi listening it can be a bit fatigueing.
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Post by chinook9 on Oct 27, 2013 19:33:06 GMT
As to the Chinese velours pads, I did hear a difference when i'd put on one velours on and one pleather. The velours made the overall sound a bit softer, thighter bass and the highs softened slightly more. Still the Superlux is a bit screamy compared to other headphones, but nicely detailed in the pronounced highs. I do would trust it to do monitoring on recordings, but for hifi listening it can be a bit fatigueing. What are you driving them with? I am using a Sunrise II tube amp and they don't seem bright to me. I could probably make them bright with a bright tube but I haven't tried it.
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Post by madmac on Oct 27, 2013 19:40:59 GMT
I don't use any amp, I plug them straight into my Macbook. I got to admit that it sounds less bright and fuller when plugged into my Yamaha receiver. So the Macbook's phones out is not the best reference, I understand that. But I'm not into headphone amps, I just need them to sound the best and most neutral possible on my Macbook. The Superlux does a pretty good job on that, plenty of volume and an honest sound.
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solderdude
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Post by solderdude on Oct 30, 2013 13:22:57 GMT
I promised to get back on the cable change issues: This is also posted HERE on the WEBSITESome headphone cable measurements. the '3 wire no screen' cable is the HD681 stock cable by the way, the thin litze cable is the 'Skytronics' cable and similar to those found on many of the cheaper headphones with the thin and supply wiring. The 'rods' are the actual headband rods of the HD681, the ones that carry the signal to the right earcup. It was 'feared' that these rods would degrade sonic quality due to them being Chinese steel. resistance, Inductance and Capacitance (between channels and to common) per meter cable. Below that is the loss of power in dB/m when a 32 Ohm Headphone with a 210uH inductance is used. Some people are concerned that cable capacitance and it's inductance would create a 'resonance' in the audible range. With a typical 600pF capacitance (3 meter cable) this would 'resonate' (if it were not damped by the amplifier and voicecoil resistance) at around 500kHz. If the voicecoil resistance would be close to 0 Ohm some amplifiers might become unstable but the resistance of the voicecoil prevents that. freq range of all cables (3m) - 3dB point all above 1MHz (> 1,000 kHz). Some people have the fear that the capacitance of a cable combined with an output resistance of an amplifier causes roll-off in the audible range. Let's assume a 3 meter cable with 300pF/m so 1nF of cable capacitance. Let's assume a 120 Ohm output R (most will be much lower but 120 Ohm will give worse case scenario) This will give a -3dB point of 1.3MHz... I doubt anyone should be worried about that... What about inductance of the cable ? A 3 meter cable will give a total inductance of around 6uH compared to the 100-500uH of the voice coil itself which is in series this cable inductance is negligible. How about resistance... Well this does do something when a single return wire is used and the cable has a high resistance (thin supple wiring) while the driver impedance is low (16Ohm to 50Ohm). a 3 meter cable can easily reach 1.5 Ohm and the very thin wires 3 Ohm. Let's assume the HD558 with a 50 Ohm impedance rising to 250 Ohm is connected to a 0 Ohm amplifier. A cable with 3 Ohm is used. The frequencies around the nominal impedance will all be -0.5dB in amplitude compared to what has been put into the cable. Around the resonance frequency (100Hz) the damping would only be -0.1dB so an HD558 (which has an unusual high impedance peak) will have increased bass response of about 0.4dB. With a 'better' cable say 0.3 Ohm this difference is 0.04 dB.
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