Moontanman Posted November 10, 2012 Posted November 10, 2012 Having, at one time at least, been an audiophile I have done little but play my stereo in so long I can't remember if this will be a problem but in my new house I am having problems getting my turntable close to my control amplifier, feedback due to the speakers vibrating the floor has become a problem. All my other components are happy near my speakers but the turn table is getting feed back pretty bad. Can the RCA type connectors from my turntable be any arbitrary length or is there a maximum length? Anyone know?
michel123456 Posted November 10, 2012 Posted November 10, 2012 Having, at one time at least, been an audiophile I have done little but play my stereo in so long I can't remember if this will be a problem but in my new house I am having problems getting my turntable close to my control amplifier, feedback due to the speakers vibrating the floor has become a problem. All my other components are happy near my speakers but the turn table is getting feed back pretty bad. Can the RCA type connectors from my turntable be any arbitrary length or is there a maximum length? Anyone know? I think. (bolded) In ancient times I don't remember that question. in new times IIRC the first time was over the length of cables for a large pen plotters, that was around 1992. Also you can increase the weigth over the needle. and put the turntable on an independent table top. also IIRC there some turntables had a screw beneath to unlock the suspension.
Moontanman Posted November 10, 2012 Author Posted November 10, 2012 I think. (bolded) In ancient times I don't remember that question. in new times IIRC the first time was over the length of cables for a large pen plotters, that was around 1992. Also you can increase the weigth over the needle. and put the turntable on an independent table top. also IIRC there some turntables had a screw beneath to unlock the suspension. Increase the weight over the needle? Never! I might try to isolate the turntable better, in it's time it was close to state of the art, but that was when dinosaurs roamed free... The RCA cables would have to be several feet long, I am betting that would have to cause problems. The turn tables suspension is unlocked, I only lock it down to move it. Maybe a slab of granite to isolate the turn table? The root of the problem is hooking a flat screen tv to my control amp, the TV having out puts that hook to my Onyko AV Receiver, I am trying to hook everything up into a more modern system but I want to still be able to play my vinyl.
michel123456 Posted November 10, 2012 Posted November 10, 2012 what about your loudspeakers ? maybe these are the ones to isolate from the building structure.
John Cuthber Posted November 10, 2012 Posted November 10, 2012 A paving slab on a bike inner tube will make a pretty good vibration isolator. However, to answer the actual question you can get away with very long leads but exactly how long depends on things like the output impedance of the source driving them.
Moontanman Posted November 10, 2012 Author Posted November 10, 2012 (edited) what about your loudspeakers ? maybe these are the ones to isolate from the building structure. That may be my next move, I'm not sure how effectively I can do that. Actually the turn table does have the option of changing pressure the cartridge exerts on the turn table but it is set to the manufacture's specs. A paving slab on a bike inner tube will make a pretty good vibration isolator. However, to answer the actual question you can get away with very long leads but exactly how long depends on things like the output impedance of the source driving them. Someplace I am sure I have that info but I remember being told way back when the signal strength from the turn table is rather low compared to out puts like tape decks or laser disc players... Edited November 10, 2012 by Moontanman
imatfaal Posted November 13, 2012 Posted November 13, 2012 That may be my next move, I'm not sure how effectively I can do that. Actually the turn table does have the option of changing pressure the cartridge exerts on the turn table but it is set to the manufacture's specs. You want speakers to be well set rather than floaty - good stands or spikes are essential. I would concentrate on isolating the turntable Someplace I am sure I have that info but I remember being told way back when the signal strength from the turn table is rather low compared to out puts like tape decks or laser disc players... Turntables produce a signal that requires pre-amplification before going through the power amplify that all other sources use. dangerously obsessive audio-geeks will have separate pre-amps for their phono signal whereas most humans just plug into the phono socket on a combined amplifier. http://www.superfi.co.uk/c-181-phono-pre-amplifiers.aspx
Moontanman Posted November 13, 2012 Author Posted November 13, 2012 You want speakers to be well set rather than floaty - good stands or spikes are essential. I would concentrate on isolating the turntable I have Infinity 1.5 speakers... http://www.bobbyshred.com/infinity/RS1.5.html They do have speaker stands built in. Turntables produce a signal that requires pre-amplification before going through the power amplify that all other sources use. dangerously obsessive audio-geeks will have separate pre-amps for their phono signal whereas most humans just plug into the phono socket on a combined amplifier. http://www.superfi.co.uk/c-181-phono-pre-amplifiers.aspx Yup guilty as charged on that, but how long can the leads be before i run into problems?
StringJunky Posted November 13, 2012 Posted November 13, 2012 (edited) How long do you need the T/T-Amp interconnect to be precisely? What is the make and model of the cartridge? Edited November 13, 2012 by StringJunky
Moontanman Posted November 13, 2012 Author Posted November 13, 2012 How long do you need the T/T-Amp interconnect to be precisely? What is the make and model of the cartridge? About 10', it's a Sure V15 type IV.
imatfaal Posted November 13, 2012 Posted November 13, 2012 A good cable 3 metres is not too far - but it will end up as pricey. Found this page - not sure about the validity of the conclusions, but they bear out my preconceptions http://www.empiricalaudio.com/computer-audio/audio-faqs/short-versus-long-cables
StringJunky Posted November 13, 2012 Posted November 13, 2012 A good cable 3 metres is not too far - but it will end up as pricey. A quick read suggests over 1m is too much for hifi buffs. I'm wondering if he can get a preamp like THIS one, sit it next to the turntable, then run that to the amp to boost the signal? Moon, you could get the good quality cable, as imafaal suggests, and if the sound (probably high frequencies are hit too much) then you could add a phono preamp after to compensate if necessary.
Moontanman Posted November 13, 2012 Author Posted November 13, 2012 A quick read suggests over 1m is too much for hifi buffs. I'm wondering if he can get a preamp like THIS one, sit it next to the turntable, then run that to the amp to boost the signal? Moon, you could get the good quality cable, as imafaal suggests, and if the sound (probably high frequencies are hit too much) then you could add a phono preamp after to compensate if necessary. That might be an answer to the problem, I am a bit picky when it comes to sound quality, why have the source material if you can't reproduce it accurately, is my take on it, my speakers to have a great high end, something like flat wave response to 36 k hertz, they do highlight bad input signals. I could just leave the two systems separate, but sadly my CD player also plays my DVDs and VHS, quite possibly the easiest thing to do will be just buy a new DVD player but that would leave out my VHS and I do like listening to my TV over my stereo system. Thanks for the Tips guys, I'll let you know how it turns out. .
imatfaal Posted November 13, 2012 Posted November 13, 2012 That might be an answer to the problem, I am a bit picky when it comes to sound quality, why have the source material if you can't reproduce it accurately, is my take on it, my speakers to have a great high end, something like flat wave response to 36 k hertz, they do highlight bad input signals. I could just leave the two systems separate, but sadly my CD player also plays my DVDs and VHS, quite possibly the easiest thing to do will be just buy a new DVD player but that would leave out my VHS and I do like listening to my TV over my stereo system. Thanks for the Tips guys, I'll let you know how it turns out. . Most audio-geek shops in the UK will lend you decent (ie pricey) interconnects before you buy so that you can try out on your set-up. Get wife/girlfriend/bff etc to swap the cables around without you being able to tell and listen to cheap and pricey half a dozen times each - your favourite/most familiar tracks and score them (written down). The blinding and notes are essential - we just cannot be impartial. I had a reasonably silly system - but stopped myself going lunatic when I found that I couldn't tell the difference anymore unless I knew what which set-up was playing. And - hating myself for mentioning this - you lose your top end audio acuity as you get older
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now