Creative Cabling for Bass Quality


I originally posted this in a thread about improving the bass quality of Legacy Classic speakers, but I suspect other speaker owners might benefit from what eventually worked best for bass with the Classics.

It all began with me feeling the bass of my Legacy Classics lacked a bit of definition. Tightening loose screws on the woofers, tilting the speakers back a few degrees, and playing with room placement all helped, but not enough (I also tried plugging the ports, as one Audiogoner suggested, but thought the bass sounded terribly constipated). I biwired, and that helped too, but not enough.

I next tried biamping and found that tubes so sweetened the top end I didn't care for awhile about low end imperfections. As luck would have it, my Proceed preamp offered stereo sub output, and allowed a setting of 120hz -- thus matching the Classics’ low crossover point. Assigning my McCormack power amp to driving the woofers alone helped tighten the bass too, yet I still wasn't happy.

Next I wondered if bass-specific wiring might help. I had been using high end MIT cables for all, but now decided to use it only for the mid and upper ranges. After some experimentation I reasoned that speedy silver for the bass end might help tighten things, so I tried Signal Cable’s Silver Resolutions, and wala! . . . bass did indeed tighten significantly; further, despite warnings from some, I noticed absolutely no synch problems from using different cables for lows and mid/highs. Thinking a cable with more silver might work even better, I tried 12g pure silver, but lost the quickness (and then some) the Signals provided. I surmised that the skin effect rendered those particular thick silver cables sluggish.

I put the Signal Cable Silver Resolutions back in, and for a time lived happily with that set up (i.e., Silver Resolutions on bottom, MIT on mid/top). But being an avid jazz listener, in due course I missed the bass "weight" that the Silver Resolutions sacrifice to get bass quickness.

Hmmmmmm, what to try. I wondered if thick, flat copper like that found in Analysis Plus cables might help, and since a pair of Oval 9s were selling cheap here at Audiogon, I tried them. Sure enough, they added major bass weight, but completely annulled the quickness of the Silver Resolutions! Grrrrrrrrrr.

And here's when the best thing happened.

I had ordered the Silver Resolutions terminated with banana plugs, while the Analysis Plus Oval 9s sported spades; the posts for bass on the Classics, of course, allow for both spades and bananas, so I hooked BOTH the Signals and Analysis Plus cables to the bass-end set of posts, and then to my McCormack.

All I could do was sigh with satisfaction when I heard it. Exactly the effortlessly quick and weighty bass I'd imagined possible from the Legacys. And now many hours of listening later, I am still unreservedly content with that cabling arrangement. The only tweaking thoughts I've had is trying Oval 8s if I ever see a bargain, and possibly trying silver ICs between the preamp and McCormack someday (I’m using Audio Metallurgy GA-0 ICs now . . . actually I wish AM would make some silver GA-0s, I think their magnetic technology is a very effective concept).
les3547
Les, yes, certainly not only the total gauge, but conductor material and geometry are extremely important. That's why if you're going to double up you should try different couplings, as you will get different results with each set.

I reviewed the MIT AVt MA series several months ago. I would guess that you may actually end up with the MIT's on the bass, that is, if you can double up. I was using the MIT's on bass and Magnan Cables on the top for a while. Worked quite well with the Focus HD's. You will find with time that you might like more than one configuration and will be frustrated that you have to choose. That's when I eventually zeroed in on the best cable I had and used it throughout the rig.

I'm not convinced that double MIT's would be the best on mid/highs. Switch around the combos and you'll find the one which is best for you.

Silver typically yields a "cooler", more clinical, detailed sound. Not by much but enough to be worth a try if you have too much "muddiness" or warmth in the rig.

Change any one component and the magical cable changes will need to be reassessed. i.e. positions and combos
A synergy (optimum combo between components and wires) needs to be established. Once in place, tis sweet!

This is an option if you have the money and the time; purchase a couple sets of cables (i.e. set of MIT, and say, set of Audioquest, or whatever - get power cords, IC's and speaker cables). Do direct comparisons between them as sets, then mix them up once you're familiar with what they are doing. You'll REALLY know what you're after in cables as you do so.

It will tie up some cash. I had thousands tied up in extra comparison cables at one point, and they were all used cables! But, despite the tedious switching of cables and shipping, deals etc (It was a pain doing a dozen deals to acquire and then resell cables, it was worth it to me as I discovered precisely my taste in cables. When all was said and done I had a great learning experience, reworked my cabling, and it cost me very little except my time. I can now pretty quickly assess cables and pursue ones which will fit any given rig I have. I also found my favorite cable manufacturers. In mixed cables I liked the sound of MIT on the bass and Magnan on top. It will be interesting to see what you come up with.

The advantage of eventually finding the one brand which you prefer is that you will get coherence throughout the frequency spectrum with the speakers. Once you've gotten that brand settled, you can use the various offerings of that cable line similarly to how you're doubling cables now. Bonus!

One benefit through the process was that as the cables elevated in performance I discovered weaknesses in the other components, and I eventually switched source and amp as well! So, watch out, it can be a driver for a complete system overhaul! I would suggest caution regarding component changes due to cable changes, but when you get extremely good results with cables anomalies can be revealed which you didn't hear previously. That can put you on the search for a different source or amp. But that's not a bad thing. :)

There are definitely brands and geometries I would/would not use with any given speaker technology, but I can't give away all my secrets. ;)
Interesting. I have been contemplating a change in speaker cables. According to Signal Cable's website, the Silver Resolutions are constructed with two-thirds copper to one-third silver. I wonder what 100 percent silver construction would yield in terms of bass response??
Hi 2chnlben,

You might have missed in my post that I did attempt that. After trying the Silver Resolutions, I switched them out for pure 12g silver cables. I got a little more bass weight, but I lost every bit of the definition I'd obtained from the Silver Resolutions. Personally I don't think heavy gauge silver is very well suited for any speaker application.

The pure copper 9g cables alone gave great weight, but little definition; when combined with the Silver Resolutions, both weight and definition showed up.

Here's how I analyzed what happens. The pure silver 12g is so thick it slows down whatever quickness silver can contribute.

Next, look at the amount of silver vs. copper in the final configuration (Oval 9s + Silver Resolutions). Frank at Signal states the "effective gauge" of his cable is 12, with 8 strands of it copper, and 4 strands silver. He doesn't say if all strands are of equal gauge, but let's assume they are. That would mean only 1/3 of the total 12g of his cable is silver; further, they are not a single strand, but four thin woven strands. Finally, we have another 9g of pure copper when the Oval 9s are added to the mix.

To me it makes sense intuitively. Bass weight can handle and needs lots of copper, but definition is a more refined dynamic. Too much silver slows down conduction, especially solid core thick silver, but just the right measure, broken down into small wires, promotes silver quickness.

Of course, I realize an "intuitive" concept like mine can be ugly wrong, but no matter what, I can state confidently that a bit of silver conducted through several slim wires in combination with lots of copper equals a full bass experience of definition and weight respectively.
Want to improve bass performance? Get some thick* solid copper and make up some solid speakercables.
*thick begins at 10awg;)

Be aware that the copper needs to be massages at high power level to open up, one hour of massage does alot.
Palerider,

I think you either forgot to read my opening post or, since this thread features a three-part idea, maybe I didn't explain it clearly.

The first part of the idea is, in a biwired or biamped situation, to use the bass side of your biwirable speakers' binding posts to connect TWO separate wires TO THE SAME POST, one wire using spade connecters, and a second wire using the binding post's banana plug connection (of course, it is possible to connect two spades to one post, or with a banana plug adapter to connect two bananas to one post).

The second part of the idea is to recognize that wiring can affect bass in two major ways: bass "weight," or that ability to cause a listener to feel the umph of a note; and bass "definition,' or the ability of a woofer to generate distinct notes with each clearly defined from the note before and after it.

The third part of the idea was that the two connections to the bass side of biwirable speakers allows one to use specific wires for each bass aspect. That is, as I said in my opening post, I found that connecting 9g copper (using spades) generated weighty bass, and a relatively small amount of silver (using the banana connection) added definition . . . thus giving a method for improving bass by wiring for BOTH bass aspects.