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Long Runs - How to obtain a better result

claudiojr

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Jan 20, 2026
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I´am new in audio, and looking for some help. I thought about some solutions, but don´t know if they should work.

Initially, i had no intention in having a hi-fi system. I just wanted a regular ambient sound, and nothing else. But i started visiting friends with great systems, and by the time i decided to have a better system myself, there were many things i couldn´t do anymore and, also, i´ve got some misorientation from the guys who were responsible for my automation, which left almost all the equipment in a technical room (rack).

I know it is definitely not the ideal set up, but i wish to make the best of it now, till i´m able to arrange things a better way.

So, i ended up with very long runs. Now, i wish to address them so i can get a better result.

There are two issues i must address. The first is about the turntable. It has a 25 meters run to the technical room. I have a Rega Planar 8 with a Ania Pro cartdrige, and a Rega Pre Phono MC MK4. I´m using Canare L4E6S cables and thought i should balance the signal untill the rack, so it can cross that distance with less interference. I bought a Radial Engineering box to balance it, but the signal level is too low. Which equipment should i use here? In the rack i have a Denon AVR X4800H, for the times i want to listen to the turntable in my ambient sound (7 pairs of in-celing B&W CCM684 and a pair of B&W DB4S subwoofer), and a Hegel H390 for when i wish to listen to it in my stereo system (Focal Sopra N1 bookshelfd and a B&W DB4S sub). So, i´m thinking about sending a balanced signal from the turntable to the rack, and, by getting there, it should be splitted in 2: one unbalanced to get into the Denon Receiver and one balanced to get into the Hegel Power Amp. Which equipment should i use to balance the signal? And which one to split it later?

The second issue is the run between the Hegel to my Sopra Speakers, another 25 meters. They used regular 2,5mm audio cables; i bought Mogami 3103 cables and will swap them. Should it make a difference?
 
The least expensive way to achieve your goal is to use a pair of MuxLab baluns and run a single Cat5e or Cat6 cable between your phono pre and your rack. The audio quality should be transparent and the noise isolation excellent. You simply put one of these stereo balanced transformers at each location and plug in a long ethernet cable into each transformer and you will have a seamless connection up to 1000'.
 
It doesn't sound as if you are on strict budget so how about getting a Waxwing, placing that next door to the turntable then running it's optical output through a toslink to ethernet converter to your rack. You might get away without the ethernet link but 15m is I think regarded as pretty much the max for straight toslink connections. My understanding is that some of these spdif over ethernet transports support ethernet switches so that you could split the incoming spdif with one of those so that both your Hegel and Denon can have a digital feed.

The amp to speaker connections should be easier, you'll need a thicker cable so that the long run's resistance isn't too high and your Mogami cable should be ideal for that.
 
I'm a Mcintosh fan, and because I am, I happened to pick up an MP100 for 1300.00 a few years back. It has balanced out and RCA in. Pretty easy solution for long runs, MC or MM or both TT carts. I use a simple switch box for the MM mono cart and the 2nd tone arm on one of the TTs. So there are 3 tonearms, MM (stereo), MC (stereo) and a Mono for the collection of 78s I have. My TTs are about 40 feet (of XLR) away from the main preamp (C-53). I was dealing with feedback issues through the carts because I didn't want to use rumble filters with the sub/bass system. Worked perfect. If it's been pressed or cut onto the record, I can play it. Certainly wasn't the case before.

I really like the Parks Audio Puffin, I have, but I've limited its use to recording from, when recording to a cassette, CD, memory stick, HD, or RtR. Great set of tools onboard, considering some of the old Mono 78s were made in the late 30s and early 40s. I've never tried the Toslink, so I have no idea how well it works.

Regards
 
So, i´m thinking about sending a balanced signal from the turntable to the rack.

Yes. Ideally, long runs should be balanced. The phono preamp should be close to the turntable because the connection is sensitive to noise, and cable capacitance affects the sound. A phono preamp with balanced-out would be ideal, or you can put the Radial box after the preamp. Then you'll need another box to go-back to unbalanced for the Denon. If you are going to "split" the signal, an active converter (with a buffer) might be better than a passive-transformer converter (less prone to impedance effects).

Make sure the balanced-unbalanced converters are intended for line-level signals. (They are also sold as DI boxes for guitar-microphone signals.)
 
As already stated, the run from the phono preamp needs to be balanced. So long as it has a healthy output, running a splitter should pose no problem if you’re using good quality cables. You might want to get some custom lengths made by Blue Jeans Cables.

As to the speaker cables, the amp shouldn’t be that far away. 25m? If that can’t be changed, you’re going to need the thickest cable you can get your hands on.
 
you’re going to need the thickest cable you can get your hands on.
Pick your poison:

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Well... maybe not that big?

For 25m, with 8Ω speakers you will need 6 AWG wire if you want the wire's resistance to equal 1% of the load... but I bet 2% will still be inaudible and that gets you to 9 AWG. Many say that 5% is fine and to achieve that ratio 12 AWG wire is acceptable.

If you have 4Ω speakers, then you do have to get pretty fat wires. 1% will require 3 AWG, 2% 6 AWG, and 5% 10AWG.
 
It's quite easy to have 25m cable runs in a large room. The cable needs to go up, left, up, down...

The usual recommended AWG do a good balance of cost and performance.
 
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