30 ft rca run too long for a phono to preamp?


Hi, I am having vibration/feedback issues with my current turntable location and would like to move it to the other end of the room. Is a 30ft connection from the phono (vp-130) to the preamp ( slp-98 ) too long?

Thanks,
Mike
hanaleimike

Showing 7 responses by hanaleimike

Hello Gentlemen, thank you for your responses.

Right now the stylus, when playing is approx. 20" from the side of the left Vandersteen. As I am getting a wobbling deep bass feedback as the volume get's up there, I have to assume that the tt is too close?
Please tell me if I'm wrong, and I will work on isolating from the speaker.

The floors are really springy as well, and after trying different isolation products from herbie's that I had on hand, I am thinking I have to wall mount the tt. I am reluctant to mount a wall rack in the tables current location, only to find the proximity to the speakers is still an issue. Without turning our living room upside down, The best place is 30ft away. What I am hearing is that is too long. I cannot move the preamp, it and everything else are plugged into dedicated circuits. So, upon reviewing your answers, I have 2 options. A 30 ft run, or a wall mounted turntable 20" from a speaker.......or sell it?

Thanks,
Mike
Hi, Marakanetz, no I do not have balanced components,

Tvad, I have moved some furniture around (in my head ) and have another option. If one chair magically disappears, I can wall mount the turntable placing it approx. 45" from each speaker. With a 30ft run now out of the question, I am left with this new wall mount option, and I obviously don't want to sell it, but maybe another turntable would be less susceptible to feedback? Is a Thorens td-147.
One last possibility, although I can't do it immediately, the side wall is a possibility, but will cost more and involve a new wall mounted tv, but if 45" is still too close, It may be my last option.

Thanks again for all your thoughts.
Alright Gentlemen, lots to think about, the ceiling mount is a possibilty, but it would still be about 45" from each speaker. I will look into the Galibier sandbox, and Audiolui, you may be onto something as I blew the bottoms out of my Vandersteens sunday afternoon.

Thanks, I will post back with my solution.

Mike
Hi Dan, it is a thoren td-147, I currently have it where the c-30 is in the picture as I have upgraded my preamp, but not my systems photos. I am thinking about moving that chair to the right.
Sam, I thought about it, and it would probably be the easiest, but there are 2 ceiling fans across that beam, when I put my hand on the beam I can feel their vibrations, I don't think that would be good, but the vibrations are at a much higher frequency.
I understand there is going to be some trial and error, I am trying to minimize the number of holes I drill into the wood wall. You should see my floor.
Sorry to highjack my own thread, but this is turning into a turntable isolation thread.
Tvad, I am having a hard time finding info on ceiling hanging, is this better then a wall shelf, would I use heavy chain, and a slab of granite? poured concrete? I have moved the speaker and added 2 more isolation platforms and now I can stomp my foot close to the turntable without skipping, most of the time. I recently blew my 10" acoustic coupler voice coils on my Vandersteen 3a's, so the deep bass is not there right now, but I think it goes to about 35hz, and I am not getting any terribly noticeable feedback, but I think I could do better. I used the hi-fi new lp and my cartridge resonates at around 12 hz, so even with the couplers back in after repair, the speakers shouldn't cause an issue at 20or 25 hz. It would be nice to be able to completely isolate from the floor, and the wall is not bearing, and is underneath a 10ft window. It shakes when I bang on it.
I designed a shelf for my table, and emailed it to a local welder, then today while awaiting a reply, I decided to make one myself, just to make sure it would work. It did. I used 2" Mahogany, 4 1/2" stainless screws, glued, clamped and screwed. It's not fine furniture, but it is solid, goes with the equipment stand and room, and best of all it was free as I had all the materials on hand. I can jump up and down right in front of the turntable and it does not skip. My son and I tested it out well.
I tried the Hi-fi news test lp again, and It tracked the torture track with only the slightest distortion from the right channel, best yet. I moved the speakers into the room a bit, and while I don't have my super deep bass right now, I can play as loud as I want without audible feedback distortion. Depending on what the quote from the welder is, I may just keep my version and spend the rest on records. I am now looking to put a slab of granite, Mango wood, or a poured concrete slab ( like a countertop) and probably a sandbox, with the galibier metal inserts into the sand, and I think I'll be done for a week or so.

Thanks for all your help.
Hello again,

I thought I'd post an update. I replaced the repaired woofers in my speakers and now have the full bass again. I built the wall shelf, placed the table ( I got a vpi scout during this whole process ) on a slab of granite which is sitting on isoballs, moved a couch, spread out the speakers, and I have no problems with footfalls or feedback at any volume level. Life is good.
Thanks for all the help.

Mike