Sennheiser PC37X randomly goes bad after disconnecting the cable ?
Greetings, Yesterday I was using my headset like normal with my macbook, just listening to music and on a call with people like usual, and the headset was perfectly fine. The stock wire that came with the headset is extremely long and yesterday it annoyed me very much that it kept getting tangled with itself, so I decided to see if the cable is replaceable. I pulled out the cable from the headset and saw the adapter, and looked online for a replacement. Upon plugging it back in, the audio sounded extremely muffled and washed out. Im not sure what I did wrong to make it mess up like that as I've always taken good care of it, ive had it for about 2 years and its always just been chilling on my desk, but anywho I thought the cable just went bad and ordered a replacement. The replacement came, and the issue is still persistant, so I am not sure what the issue is I've tried multiple different headsets and the issue is not with the port, and I also tried it with my windows laptop and...
Apr 23, 2024
- In the first hours/days of using the 789 ist sounded very great but also somehow flat. After a certain burn-in-period it got more depth and improved in cetrain aspects of the sound quality. In the first 50 hours the low-end improved further and also the high-end got a little smoother. After about 100 hours and more the high-end still improved.
- I only use the single-endet output and my headphone is the Beyerdynamic DT 1990 PRO. In the first days I listended to music by using the mode gain-2. That happed also until and over the period where at first the 789 still sounded flat until a certrain burn-in period. By using gain-2 I had to turn up the volume to about 80 percent to listen to a certain loudness. After some time I just tried mode gain-3 (and of course I had to turn down the volume knob because the music got louder with gain-3) and noticed that the sound got more depth, more clarity and control, better channel separation, better instrument separation and a wider soundstage while listening to a similar volume-level while comparing sound quality between gain-2 and gain-3 settings. The highs turned from silky/glassy (with gain-2) to crystalline (with gain-3), which I liked.
Over the last months I invested money in more expensive RCA-cables and better headphone cables. Everything improved the sound quality noticeably to my sensitive audiophile ears. :-) Now I'm interested in further improvements to the sound. And that's why I read your posting about the power supply with joy. At first, I believe you when you say that the 789 with the stock power supply does not sound as good as it could be. I ask myself how you got the idea to exchange the stock power supply and what you had to look for specification-wise concerning the new adapter and also of course not to damage the 789 over a certain time with the new adapter and its specs. (I'm not an electrician and therefore only have basic knowledge). What do you mean with "more weight" to the sound now. Can it be described as more thickness ore more punch? In other words you maybe mean a warmer low-end and mid-range? How can you descibe "more weight" in other words? You did notice these improvements to the sound by changing the adapter also with your Sennheiser-Headphones but more prominently with the more expensive HiFiMan HE-6SE. Of course I ask myself, if my DT 1990 with an impedance of 250 ohms can benefit from a better power supply to the 789 which drives the amp in a better way. If I look on the stock power adapter there a different specifications: INPUT: 100-240 V, ~ 50/60 Hz, 1.5 A Max OUTPUT: 24V, 1.8 A So did I get it right that you simply looked for another power supply with only a differing specification to the OUTPUT-value in terms of ampere? You simply got a new power supply with a 0.2 higher output-level in the ampere-aspect? Is that correct? Do the other specifications (shown above) still have to be the same on the new power supply (also concerning INPUT-specs)? And also you use the words "linear power supply" concerning the new power supply. It the aspect of "linear" important here when I look for a new power supply here in Germany where I live? Is "linear" a synonym to "direct current" (DC) or does it mean something else? I'm really curious if a better power unit to the 789 would also improve my sound quality - still, after it already got improved in certrain ways by constantly using gain-3 now. Thank you very much for commenting my questions. EDIT: I would try to find an adapter on the German Amazon-Website. Would it be asked too much if you would watch out there fore me and send me a link to an adapter that would fit whats needed exactly. I fear to maybe buy something with wrong spec as there is so much to look out for in terms of electricity. And then there obviously is also the aspect of Watts where a mistake might be made. And there is no specification about Watts on the stock power supply of the 789. EDIT 2: I began to search for supplies on Amazon. There's a lot to find and with diferent specifications. Two new questions that arose are: Is a INPUT-power of more than 1.5 Ampere allowed on the power supply? On the other hand I found power supples with max. OUTPUT-powers of not only 2 but 3, 4, 5 or 6 Ampere. But am I allowed to only buy those with a max OUTPUT-power of 2.0 Ampere or is it allowed to have one with 3 Ampere for example while hopefully the 789 knows how much Ampere it will use to the maximum to not damage itself? So what about those INPUT- and OUTPUT-values? What is important to know or should not be exceeded to stay on the safe side in terms of not overpowering the 789, while still have a benefit like you have now with your power unit-update? EDIT 3: And what about in case of OUTPUT-voltage? There are 12 Vvolts available, 24 Volts oder 28 or 29 for different usages. I ask myself how/from which side these values (Voltage and Ampere) that are written onto power supplies can be understood in generel. One one hand they mean, what the power unit is capable to produce in generel in terms of OUTPUT-Voltage and Amperes. On the other hand I don't know if a more capable power-unit is able to easily damage a device that it is used with or if it is the case that an end-device sucks only the power out of a power supply what it needs to run properly. But if the latter would be the case you wouln't have been able to give the 789 a higher value of Amperes (0.2) to hear improvements to the 789's sound quality. EDIT 4: Okay, I'm partially finding out things myself actually (at least what the differences between a "SMPS" and a "Linear Supply" are). :-) Anybody esle is allowed to join this conversation of course to answer the amount of questions I have produced here when you feel that you definitely know some answers (without giving away wrong information of course). :-)