[laurianmoga]

After reading the articles sennfan83261 wrote about, I gently tapped the power tube and the popping/cracking sound disappeared. Surely enough, it came back after a few minutes, but tapping the tube again temporarily fixed the problem. And then again. So, I might be getting somewhere after all. The power tube seems to be bad. (Or the socket?) I'll replace that 6AS7 and see what happens...

 

[Shroomalistic]

After reading the articles sennfan83261 wrote about, I gently tapped the power tube and the popping/cracking sound disappeared. Surely enough, it came back after a few minutes, but tapping the tube again temporarily fixed the problem. And then again. So, I might be getting somewhere after all. The power tube seems to be bad. (Or the socket?) I'll replace that 6AS7 and see what happens...

sounds like the power tube is bad. My gray top rca 6s7g is doing the same thing. started hissing a little and when i tap it the his went away for a while. Sad it was my favorite driver thus far. back to my chrome top sylvania.

 

[sennfan83261]

sounds like the power tube is bad. My gray top rca 6s7g is doing the same thing. started hissing a little and when i tap it the his went away for a while. Sad it was my favorite driver thus far. back to my chrome top sylvania.

Huh, I thought Darkvoice was only compatible with dual/twin power triodes (e.g. 6AS7, 6080, 7236, and 5998/421A) and dual/twin triodes (6SN7) rather than the pentode 6S7G (see also https://www.head-fi.org/threads/darkvoice-336i-336se-tuberolling-partii.348833/page-4#post-5198985).

 

[Shroomalistic]

Sorry typo, 6s7n not g

 

[JKDJedi]

After reading the articles sennfan83261 wrote about, I gently tapped the power tube and the popping/cracking sound disappeared. Surely enough, it came back after a few minutes, but tapping the tube again temporarily fixed the problem. And then again. So, I might be getting somewhere after all. The power tube seems to be bad. (Or the socket?) I'll replace that 6AS7 and see what happens...

So guess what... I turned on my Darkvoice this evening and BUZZZZZZZ!!!!!! What Da HEck! And yes replacing the Power tube remedied it. However, 5 minutes later I put the effected power tube back on and the electrical buzz is gone... o.O Hoping it's just dirty contacts. Anyone here know how to clean them?
Edit: found this guy on google--- >
CAIG Laboratories DeoxIT SHIELD Liquid, brush applicator 100% solution 7.4 mL

 

[Xibipiio]

So guess what... I turned on my Darkvoice this evening and BUZZZZZZZ!!!!!! What Da HEck! And yes replacing the Power tube remedied it. However, 5 minutes later I put the effected power tube back on and the electrical buzz is gone... o.O Hoping it's just dirty contacts. Anyone here know how to clean them?

Whatever you do, don’t use a cleaner that might leave a residue of your tubes. The residue can seep down into your tube sockets and wreak havoc. Maybe try a dry, clean toothbrush first, maybe with a little isopropyl alcohol. If that doesn’t work, there are zero-residue context cleaners you can try.

 

[JKDJedi]

Whatever you do, don’t use a cleaner that might leave a residue of your tubes. The residue can seep down into your tube sockets and wreak havoc. Maybe try a dry, clean toothbrush first, maybe with a little isopropyl alcohol. If that doesn’t work, there are zero-residue context cleaners you can try.

Thanks, I'll give that a try, and have read that Detoxit might be ok to use... thoughts?

 

[Xibipiio]

Thanks, I'll give that a try, and have read that Detoxit might be ok to use... thoughts?

I don’t have any personal experience with the Caig product. You might give this a try.

 

[Xibipiio]

Oh, and you can clean the sockets themselves by using a pipe cleaner or toothpick with just a little contact cleaner. Be very careful and poke it into the holes to clean them. I love my DV, but you never know if it’s going to act up on any given day! I’ve had noise one day, none the next, with no changes at all

 

[JKDJedi]

Is this overkill for the Darkness?

 

[ggillies]

Take a financial hit for the team, and find out for us, ok?

 

[JKDJedi]

Take a financial hit for the team, and find out for us, ok?

LMAO I'd be Dead Man Walking...

 

[DarkDrummer]

Still super early to tell, maybe let the Tung Sol 7236 settle down? But..not getting this bass slam it's known to have. Am I jaded? Am using the super mid HD6XX.. gonna switch over to the Fedelio real quick... and nope..no bass slam Oh wait!!! Just flipped on A Lot by 21 Savage.. yeah, gonna give her another 48 hours... the Darkness will be left on till Sunday midnight! "I love You..... For so many reasons......"

Edit: Mates really well with the Black Treasure, kinda figured it would since both seem faster than must tubes I've tried so far. (from my little collection)

You’re forgetting the PSVane CV181-TII.....

 

[JKDJedi]

You’re forgetting the PSVane CV181-TII.....

Those good in the bass department? Wondering if I should just get a bass heavy can.

 

[sennfan83261]

Wow, my Darkvoice is ultra quiet following the Fitz Mod. Noisy 6SN7's no more. Gain is increased though. Before, I typically listened at 9 o'clock but now the volume dial is at almost half past 8 o'clock.

EDIT: Below 8 o'clock one will encounter channel imbalance, so I had to lower the volume output of my modi 3 to be comfortably between half past 8 o'clock and 9 o'clock. And that's the trade off with the Fitz mod using 220uF caps. With 100uF caps, I read in the Fitz mod thread that one will experience bass roll-off when using those caps.

EDIT 2: Not really liking being so close to the channel imbalance threshold. Lowering my dac's volume helps a bit, but the volume is still too high. So, I have to lower the overall gain digitally (-10 dB) using Musicbee's EQ. That should be okay for now, as replacing the crappy linear 250K volume pot is likely going to be my next mod for this unit.

Just reposting the Fitz mod here:

2x 220uF caps in parallel

https://www.head-fi.org/threads/dv-336se-hum-fitz-mod.353079/page-2#post-5248489

https://www.head-fi.org/threads/dv-336se-hum-fitz-mod.353079/page-2#post-5480248

https://drop.com/buy/dark-voice-366se/talk/556072

https://www.reddit.com/r/headphones/comments/51tnl6/whats_required_for_modifying_a_darkvoice_336se/