Tardcore Posted March 7, 2016 Share Posted March 7, 2016 Construct a Faraday cage and place the phono preamp inside. Quote Link to comment Share on other sites More sharing options...
ajxd Posted March 7, 2016 Share Posted March 7, 2016 Yeah, I plugged in a couple pairs of cables. No change. I really shouldn't need to do any of this though. What the hell happened? Wait. Couple of pairs... did you plug into EVERY one? Like no open inputs? Quote Link to comment Share on other sites More sharing options...
ajxd Posted March 7, 2016 Share Posted March 7, 2016 Its a Pioneer, about 5 years old. I guess I can wire it up to my home theater for a minute and see what happens... Aaaaaaand... surround sound interference when wired up to the home theater receiver. I can clearly hear (with no much static at all) a local radio station. So through your other amp, you get the same interference.... Do you get it in other inputs or JUST the phono? Quote Link to comment Share on other sites More sharing options...
ajxd Posted March 7, 2016 Share Posted March 7, 2016 Also what settings on the Mani? I'm just trying to figure out what changed, because you touching yourself at night. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 7, 2016 Author Share Posted March 7, 2016 Yes, plugged all the inputs. I get the feedback regardless of which input I use. The Mani was set on 47k Gain 1 L Gain 2 H But trust me when I tell you, I tried every damn setting. Only way it disappears is on 47, rather than 47k, but that's for MC and the music level is way too low. I have a Shure M97xe cart btw Quote Link to comment Share on other sites More sharing options...
kannibal Posted March 8, 2016 Share Posted March 8, 2016 Obviously, you need to find out why the Mani suddenly started picking up a radio station clear as day, and make sure it's not a general problem with all preamps at your location, but I noticed you mentioned getting rid of it and getting a Pluto. Why don't you invest more in your playback system? You buy lots of records, including counterfeit titles, and you've spent money on LED strips, but you don't seem to want to put money into your system. It may seem like your system is good enough, but trust me, it's very entry level, and you would hear that if you started investing in your system. I'm saying this, not to put you down, but out of respect to a fellow music lover. Getting more out of your music is totally worth the investment. I know this doesn't help you with your current problem, but I thought I'd throw this out as it may be a good opportunity to get something you can grow into. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 8, 2016 Author Share Posted March 8, 2016 I understand I don't have a multi thousand dollar stereo. Sounds great to my wife and I. However I have been looking into purchasing an amp and some new bookshelf speakers. Truth is, this isnt really my main hobby. I'm a car nut. Most of my "hobby" money goes into cars. Can we get back to the Mani and the odd occurrence? I think I may call the radio station tomorrow and see if they upgraded their signal. Weird though, when I throw an older cheapo preamp in there, I get zero feedback. Quote Link to comment Share on other sites More sharing options...
circuit bored records Posted March 8, 2016 Share Posted March 8, 2016 Thread has me on the edge of my seat vinyl addict 1 Quote Link to comment Share on other sites More sharing options...
allenh Posted March 8, 2016 Share Posted March 8, 2016 We might be missing a trick here in that the problem might be the Pioneer and not the Mani. The Pioneer does have a radio tuner in it so has the means of doing this all on it's own and connecting the Mani might just be acting as an aerial. The only way to prove this is to plug the Mani into another audio system be that your computer or a pair of powered speakers or hifi system, anything that has a line level input and a speaker or headphone output will do to prove the point but it does need to be in the same location that you are having the problem. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 8, 2016 Author Share Posted March 8, 2016 Yes, I did this yesterday. I plugged the preamp into my home theater receiver. No change at all. It's most definitely the Mani Quote Link to comment Share on other sites More sharing options...
allenh Posted March 8, 2016 Share Posted March 8, 2016 If it does it into another amplifier and when substituting it for another phono stage the interference goes away then that's pretty conclusive so it looks like it's back to the manufacturer then. Quote Link to comment Share on other sites More sharing options...
Tardcore Posted March 8, 2016 Share Posted March 8, 2016 assuming you've googled this and read the longish post from the designer (Baldr) over on Head-Fi addressing similar issues? Quote Link to comment Share on other sites More sharing options...
allenh Posted March 8, 2016 Share Posted March 8, 2016 I did just that and had a read, being from the horses mouth it's worth the read. Looks like the most likely culprits are the power supply or dirty connections on your cartridge and the good news is they are more than happy to take them back if you have a problem. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 8, 2016 Author Share Posted March 8, 2016 Yes, I've read everything that I could find. Seems as though I need to shoot them an email and get a RA# for a return. Depressing. I love my little Mani Quote Link to comment Share on other sites More sharing options...
xxmartinxx Posted March 9, 2016 Share Posted March 9, 2016 I'm not sure if it's been addressed, but you haven't changed RCA cables recently? Here's a dumb suggestion; try placing a CD or DVD under the Mani. If that doesn't work, try putting one on top as well. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 10, 2016 Author Share Posted March 10, 2016 I've tried several different pairs of shielded RCAs. I'll try the CDs when I get home. Why not, it's worth a shot. Quote Link to comment Share on other sites More sharing options...
ajxd Posted March 10, 2016 Share Posted March 10, 2016 Have you asked someone else? Maybe it's you going crazy slowly. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 10, 2016 Author Share Posted March 10, 2016 Well, I've spoken with Schiit (hardly any help, really). I also inquired with my brother in law who is an audiophile. He even came by my place and is baffled. Quote Link to comment Share on other sites More sharing options...
allenh Posted March 10, 2016 Share Posted March 10, 2016 I think at this stage all you can do is get an RA number and send it back to them. You've pinpointed where the fault is so now it's either replacement, repair or some means of shielding that works and as I said earlier electrical noise especially radio type noise has driven design engineers mad for years so shielding will be luck once you're past the basics. That or admit the voices are actually in your own head and just accept it. Quote Link to comment Share on other sites More sharing options...
ajxd Posted March 10, 2016 Share Posted March 10, 2016 I can't wait til this comes full circle and he realizes there is no Vinyl Collective. Its a figment of his imagination. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 10, 2016 Author Share Posted March 10, 2016 Hahaha, it's beginning to feel as though it IS all in my head. Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 20, 2016 Author Share Posted March 20, 2016 OK, round 2 New Mani arrived yesterday ( super fast shipping). No changes though. Still major interference . Anyone try the Little Bear T10 Pro? Quote Link to comment Share on other sites More sharing options...
allenh Posted March 20, 2016 Share Posted March 20, 2016 That says it's something in your house or around you that's changed then if the new ones doing it as well. Did you talk to the radio station to see if they've changed their transmitter? Quote Link to comment Share on other sites More sharing options...
vinyl addict Posted March 20, 2016 Author Share Posted March 20, 2016 I did not. I can call Monday. However can someone explain what is in the cheapo preamp that is superior to the Mani? No feedback with the $20 preamp. Quote Link to comment Share on other sites More sharing options...
allenh Posted March 20, 2016 Share Posted March 20, 2016 It's actually it's lack of sensitivity that's making less noise prone so in signal terms it's nowhere near as good as the Mani but because the Mini is better at resolving it's input signal it means it's picking up more than you want. Quote Link to comment Share on other sites More sharing options...
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