ray
valued member
Posts: 11
|
Post by ray on Aug 15, 2017 17:15:35 GMT
Received the 662 EVO yesterday and performed the paper towel and cover-four-holes mods. Going to do some comparisons with my headband-modded KOSS KSC75, since it's my favorite at the moment. - First impressions are these headphones are huge! The largest headphones I've owned thus far. - The mids and treble are very forward and bright, perhaps I need to add more tissue paper. I opted to go with paper towel since it's more durable. - Sound leaks quite a bit. Wasn't expecting this from a closed headphone and I'm comparing this with the KOSS KSC75, which is open! - The EVOs require more power than the KSC75s (probably not a fair comparison, but I note it anyway). Might benefit from an amp. - I find the bass to be lacking. There's a sub-bass, but it's subdued. By no means am I a bass-head, but I do miss the layers of bass that makes the KSC75s very warm-sounding. Tuning the EQ to lift the bass up makes things sound better. Haven't done the velour pad switch yet because I read that this makes the bass even more subdued. I can see how certain genres might benefit from the EVOs, like jazz, classical and rock. However, electronic music doesn't sound the best on this as it accentuates all the mids and treble, making listening sessions hard to bare. After doing some A/B listening with the KOSS KSC75s, I have to say that I have more fun with the KSC75s and they do not require altering the EQ. I think I just need to recable the KSC75s so they are more durable and then I can stop my headphone upgrade-itis If I didn't compare the EVOs with the KSC75s, I would say that it's a decent-sounding headphone. Maybe I need more burn-in time to fully appreciate the EVOs though.
|
|
shiro
quite active
Posts: 109
|
Post by shiro on Sept 26, 2017 20:26:37 GMT
Just received a pair of these via thomann. There's no felt disc in front of the drivers. I've skimmed through this very long thread but haven't seen any news on this. Can anyone confirm this is how these are nowadays/Superlux decided to drop the disc?
|
|
solderdude
Administrator
measureutternutter
Posts: 4,881
|
Post by solderdude on Sept 27, 2017 6:29:46 GMT
It is possible Superlux made adjustments to the driver and doesn't need the felt any more or people complained about the felt ?
It looks like the recent HD681's (yes still in production) also have less bass than they used to and a slightly lower treble peak. So perhaps they revised the HD662-EVO driver as well.
I know the pre-production I measured differed somewhat from the production model I measured later (with felt disc).
|
|
|
Post by superluc on Sept 27, 2017 22:17:40 GMT
I know the pre-production I measured differed somewhat from the production model I measured later (with felt disc). Regarding this, when the two next models coming out, you plan to order both and measure if they are equal to the prototypes ?
|
|
solderdude
Administrator
measureutternutter
Posts: 4,881
|
Post by solderdude on Sept 28, 2017 6:26:12 GMT
Don't know yet. I expect these headphones to be a lot more expensive than the HD662-EVO types so may only buy one and measure/mod it when I can forward it to someone else.
The HD687 had a lot of mods, the HD688 not so much. No idea when the final versions will be tavailable. I know they wanted to replicate my mods as they asked questions on the materials (and pads) used. These guys seem to take development quite serious.
|
|
|
Post by superluc on Sept 28, 2017 13:19:30 GMT
I expect these headphones to be a lot more expensive than the HD662-EVO types Are you that sure ? Dunno... even with that driver's quality we are talking about the same construction and the semi-open version seem also discontinued*. They can place them on the market alongside the 662, but looking the same plastic thing, it's difficult to sold them at a lot higher price. 10€-20€ more ? Maybe, but double price or even more, dunno... it seem wrong to me. I can also add that the less newer HD581 is pricier on Thomann, but not on Gearbest. *checking for the HD688 on Gearbest i have see the 681EVO marked as discontinued. Actually they are marked as "out of stock"
|
|
|
Post by dmcrimson on Oct 28, 2017 18:24:08 GMT
|
|
|
Post by psych0 on Nov 11, 2017 7:29:39 GMT
Guys, i require a bit of you awesome knowledge again. I love my modded 662s (can't wait for 688, but that's another story). I'd like to get a pair of IEMs for work. Looked around last night, came to RHA MA750 (which surprisingly, i can get in Romania). Any idea how these compare to the 662evo? Should i consider something else or just get another pair of 662s?
Much appreciated, as always.
|
|
solderdude
Administrator
measureutternutter
Posts: 4,881
|
Post by solderdude on Nov 11, 2017 8:01:29 GMT
Just had my ground wire come off from the rod and upon opening the enclosure, also the signal wire came off. Sloppy soldering on my part, but easily fixed Then, giving this thread a search and finding that it's a common problem, I started to think about attaching a solder terminal to those rods to make the job helluva lot easier. Quick search at work yielded few SMT-connectors from WAGO, which had been discarded and left in a storage box - ultimately drying so bad that the plastic snaps, leaving the metal parts visible. They are a tad too big, but easily crimpable to the rod and soldered in place to ensure the electrical connection. Need to test that later Broken connectorHave seen a lot of broken off wires from the rods. They are really difficult to solder. The idea of crimping a lug on the rods is appealing. Have 2 new models here for testing and had to take one apart because the wire broke loose from a rod there as well. Not a big problem for those not afraid of opening a headphone up and have soldered before but the vast majority of owners will probably discard it and never buy a Superlux again.
|
|
|
Post by dmcrimson on Dec 26, 2017 14:21:00 GMT
The headband snapped again, so I took my old worn leatherbelt and cut a replacement... Works just as well until more permanent solution comes up I also redid the solderwork, this time with those crimpable connectors. TBH, those I posted are far from optimal, I think uninsulated ABIKO terminals would be better. Maybe I'll redo them when time comes... But soldering the wires was supereasy this time, so I call it a success. This propably applies to all Superlux headphones that use the rods to transfer the signal.
|
|
|
Post by dmcrimson on Jan 29, 2018 15:29:43 GMT
Now that I have two pairs of these, I'm contemplating on transforming the other pair to Bluetooth-enabled monstrosity... Toying with an idea of transplanting a Bluetooth-module (XS3868 Bluetooth Stereo Audio Module OVC3860 Supports A2DP AVRCP XS-3868 s.aliexpress.com/I7vQRbaA ) to one cup, and a Nokia battery with charging circuit onto another. Silly or pursuable? Oh, would need to add wiring for the battery... If they end in different cups. I still do have a Nokia Bh-111 which I could dissect too. It's downside is the battery... 120mAh ot so
|
|
Rabbit
Administrator
Posts: 7,087
|
Post by Rabbit on Feb 6, 2018 15:09:12 GMT
Blimey, that’ll keep you busy. Makes you wonder at that price whether it’s worth bluetoothing something better actually. That module is dead cheap isn’t it?
I have to say, I still love the freedom of Bluetooth. It’s just a pity that so many Bluetooth headphones are awful. Imagine a dt770 as a bluetoothed headphone. Comfort. Big bass. Closed. Lots of room in one of those maybe?
Wires would be easy to run under the padding.
|
|
|
Post by dmcrimson on Feb 6, 2018 18:44:19 GMT
That one sure is inexpensive But then again, it likely needs an amp to go and ofc the battery. Still cheap. Most likely this is something that needs a bit more thinking - and scouting for more options BH-111 works, but hasn't enough power to drive Superluxes properly as I mentioned... In any case, I find this intriguing.
|
|
|
Post by dmcrimson on Feb 20, 2018 15:43:03 GMT
Still trying to find enough information to get started. Solderdude, opinions on this?
|
|
solderdude
Administrator
measureutternutter
Posts: 4,881
|
Post by solderdude on Feb 20, 2018 16:52:12 GMT
I would keep the receiver and battery as an external thing. When placing the PCB's and battery in the cups, drilling holes for switches, USB connector, indicators and running the wires along the rods the internal volume and acoustics will be changed. Impossible to predict what the outcome will be.
The drivers are efficient enough to be driven from 3V battery = 1V max signal.
Quite an undertaking...
|
|