Problems


I just moved, and despite packing all my own gear, I have no idea how rough the movers were with it. Since arriving, some issue have cropped up:
1). Using the Frankenstein monoblock amps, after about 20-30 minutes of use, a loud crackling emits from the right speaker. This comes and goes intermittently, and won't stop until everything is powered down. I switched up outlets, and it remains the same. Checked all the connections- all seem secure. Suppose I should swap out the IC's and see if the noise comes from the other side or the same side, right?
2). I tried using the MastersounD amp. After about 10 minutes, the left channel starts cutting in and out. Switched IC inputs, and the problem stays on same side.
3). I excluded the EAR preamp from the circuit, using the MastersounD as an integrated amp. Left side still cuts in and out.
4). The only common denominator here is using the Ayon CD5 as a source. Have a hard time believing there's a bad tube in there- there are less than 1000 hours on those tubes.

I have a hard time believing there are problems in more than one component. That would be very unusual.

Any thoughts or suggestions to try and narrow this down? I do have a turntable I could use as the source and see what happens as well.

Very frustrated.....
afc

Showing 3 responses by afc

thanks, fellas. My next step was to use the TT as a source and see what happens. But to do that, I have to put the EAR back in the circuit for the phono section. Worth a shot.

One riddle- why, if it was the Ayon, would one channel go silent with the MastersounD and the opposite channel buzz with the Frankensteins?

Wouldn't they both buzz or go silent?

I'm also wondering if the power supply up here is incredibly dirty. Not only do we get frequent surges with flickering lights, but there's a slight buzz coming from the Monster surge protector unit I use. Now, neither the amplifiers or the EAR is plugged into the Monster unit. The Franks and the EAR run through a BPT line conditioner, which runs into the wall. The Ayon runs through the Monster unit. The MastersounD runs right through a wall outlet.

If something is wrong with the MastersounD, at least I know it's not the pre-tubes, since the same channel cuts out using it as an integrated or as a direct power amp.

Might just replace all the signal tubes on all the amps if the TT trick fails.

This is the one drawback about an all tube system- lots of variables in trying to pinpoint a problem.
Uru975- all tubes from the amplifiers were removed and packed separately prior to the move. Tubes were left in the Ayon and EAR units, and both were securely packed in styrofoam stays and triple boxes.
What was I thinking? Hmmm, let's see....I have to put two dogs and my wife in the car with me....there's about 12 cubic feet of trunk space.....it's a 900 mile drive.....yeah, I should have stuffed all the gear that when boxed up occupies an 8x10 closet into my car...never mind the other 25000 POUNDS (that is not a typo) that United packed and moved (you pay by the pound), PLUS had to put the wife's car on a second truck....yeah, I should have moved it myself!?!?!?! COME ON! I had no choice here. And I DID take out full insurance. I packed it all myself to try and limit any issues, but they may have done a few toss and heave manuevers. Had to remove both control knobs from the 845 and remount them, because they had been pushed into the front panel.

Anyways....tried the TT and it worked fine with the 845 (will leave out MastersounD- that's how it's written). Switched up to the CD5, and now it works fine. No channel cutting out. All I did was switch the signal tubes on the 845 to the opposite socket. Maybe one tube was loose? Who stinking knows. Now, I have to try the Coincidents and see if the buzz is gone. I don't know, I'm starting to think the outlet power source is incredibly dirty or something. Either that or the new place is haunted. Lots of bangs and bumps in the middle of the night. LOL. Very odd at any rate. The buzz returns with the Franks, I'll just swap out all the tubes and see what happens. Thanks for the help, everyone. And yeah, I should have moved it myself, but it was literally impossible to do so. Too much gear, well over 750 pounds of stuff, of which maybe one box fits in my trunk....

Tpreaves....damn sharp guess. Right on the mark, but has nothing to do with how the company prints the name on their products.