Hi,
Nearly 5 weeks ago I had to to send my sub37 for repair. Issue: random crackling and fading of the headphone output to complete silence. Occurs fully at random: days it works ok, and some days it happens over and over again. Main output signal is clear and stable. Machine has been tested at the center, and unfortunately the issue did not occur there. The instrument will be returned as it was, and I am a bit concerned that the actual problem still lives in this box. If there is someone who had a similar issue: can you please inform me so that I can contact the repair shop with these suggestions.
Forgive me for asking the obvious question, but did you try a different set of headphones?
Assuming you did and had the same problem, it sounds like a dirty/intermittent contact in the jack socket. Use a Q-tip with some isopropyl alcohol (or a proprietary contact cleaner like Electrolube Contact Cleaner) on it and insert it into the socket and work it around. Use the same cleaner on your phone’s jack plug using a paper towel. Blow the socket though with an air duster, and repeat this procedure if necessary.
If you still get the problem with two different sets of phones then it’s most likely that the jack socket is faulty or not soldered correctly. If you sent it back to Moog for service, I’m sure they would have checked for this.
What headphones are you using? Do they come with a 1/4-inch jack or are they 3.5mm and you are using an adaptor?
Also, are you using professional 'phones like the Beyer DT-100 (etc.) that have a plug-in connection to the headset? If so, clean and check the connections at the headset end.
yes, had this problem with new sub 37, the engineer in the uk had heard of the problem, even if intermitent, they replaced the circuit board without issue
Same problem for my Sub37 (received in August 2014): since 3 months I had random moments when the headphones output would have a low level and sometimes very violent crackling noises.
More recently it sometimes even stopped working for several minutes.
Even if I mostly use the line output, I took advantage of the summer break to bring it back for repair.
I will let you know when I get some feedback…
Contact tech support, they’ll help you. It most likely a faulty circuit board that needs to be replaced, I had the same problem.
It’s pretty easy to replace it yourself once you receive it, so you won’t have to send your instrument away.
Thanks for your response. I am right now 4 months without my Sub 37 due to what seems to be a minor issue: I brought my mint 5 month old home use only Sub37 personally to the local official Moog dealer where I bought this synth. They send it to the official tech support in Belgium for repair. After 2 months I got a message that the issue could not be found and the synth was returned to me by the post service. One of the wood side panels was seriously damaged, probably by rough handling. The dealer confirmed that they returned the synth with this damage. Obviously I returned the synth: The dealer refuses to give me a new replacement because it is an expensive instrument. I know that , because I paid for it ! I am waiting to see in what status I get back my instrument: if indeed the original issue is gone and no further harm is caused by this rough handling. I doubt that Moog gets feedback about this type of horror stories from international: it could hurt the brand reputation without any reason in control of Moog.
My Sub37, despite its repair in August, now has the headphone output crackling and volume variations again…
Although I had tested it when it was given back to me, I haven’t had much time to play since, and most of the time I was using the line output.
But today, after 15 minutes playing with my headphones, it was back again. And as before: it disappears ten minutes and then comes back again…
I guess I have to bring it back to the shop again ((
Just passing by: this time the repair man changed the board and the problem was fixed.
Funny thing though is that he could not reproduce the issue and he called me.
I guess it had to do with temperature conditions, warming up, etc…
But now at least it works fine!
Hi there! This same issue actually not happens to me, but my friend was facing the same issue. He has consulted technician to repair them, but the output of the headphones still fading/cracking. So he replaced them with Soundmagic headphones to enjoy the best music.
Mine has gone the same way now. Tried several headphones including my KRK’s. Same issue persists. Got my synth in 2014, is this a warranty repair as it’s a known issue or will I have to pay for a new PCB?
When it happened, I hooked a Tascam DR-2WL portable recorder up the Sub37 headphone jack with a brand-new fresh out of the box cable and made a recording. (attached - WAV file converted to MP3 to reduce size using Logic bounce).
I start off by raising and lowering the volume using a combination headphone and main volume.
You will hear - High Pitched Whine, Low volume (low enough to be recorded at normal mic levels with the recorder), noise crunching in and out of the signal. At about 1:30 in the recording I turn the volume down and start turning the different oscillator mix knobs up and down, eventually I get to the resonance and that has the most effect on the whine.
No comments the awesomness that is the arpeggiator pattern please.
I have already traded emails with Adam and sent him this recording. I would love to know what’s in store for me to get this fixed. Feel free to share your experiences with repair. I’m honestly a little terrified that my baby is unreliable and I’m going to have continuous problems with it. This is the first synth I have EVER owned that has failed in some way. Even all of my Juno 106 oscillators STILL WORK!
EDIT: MP3’s are not allowed Let me know and I can send a copy if you’re curious.
EDIT 2: I’ve added the MP3 to a zip file as suggested and it seems to have worked!
((
Let me know and I can send a copy if you’re curious.