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
The new “CTH” has significant improvements to the original design: Higher power output, approximately 1W into 50 ohms. The new CTH has some global negative feedback reducing the gain from the mu of the triode to a more manageable gain of 8x. By reducing the gain, we are able to make the amp work with the widest array of headphones through a very simple design to operate. The unity gain, discrete output buffers on the new CTH are updated versions of the buffers used in the Cavalli Audio Liquid Glass amplifier and provide the same or better performance.
THE ORIGINAL
The original CTH used a 24VAC wall wart power supply. This is suitable for a DIY project, but this type of power supply is uncommon and introduces raw power line AC and rectifier noise into the power supply circuit and the amp. The new CTH uses a 28VDC external power supply which is quieter than the original 24VAC supply. The power supply has no rectifier noise at 120Hz. The power supply also handles universal voltage (100-240V) for a single power supply version (use with plug adapters for your country if needed).
Anything the same? The original CTH has an auto-bias adjustment circuit on the tube so that no manual adjustments are needed. The new CTH does too.
PLEASE NOTE: The original CTH was designed to roll many different types of tubes. The new CTH is designed around the 6922 for simplicity of use. Owners can roll different types of 6922 or equivalent tubes, but they cannot roll other tube types into this new amp.
NEW TO AUDIO?
Massdrop 101: What Is An Amp? https://www.massdrop.com/talk/87/massdrop-101-what-is-an-amp
Massdrop 101: What Is A DAC? https://www.massdrop.com/talk/92/massdrop-101-what-is-a-dac