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Messing with my set of three tenderfeet under my CDP tonight. I had been using an equalateral triangle. I decided to mess around with placement and found that the equalateral triangle smeared and slowed down the sound. My new arrangement is off the charts better than just the plain triangle I had been using. It's a huge improvement in focus, speed and noise floor. The palpability and highlighting are incredible. Tonality is also improved. Very analogue sounding! EXPERIMENT!!!!!!!!!! :-)
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For optical digital readers like CD players and Blue ray players, I find that one foot under the spin motor works very well. The other two will have to be placed where necessary to balance the chassis. Generally one near the power transformer and one on the opposite side.
As in all tweaks, you need to play around as moving the foot even a /4 inch can make a noticeable difference.
For Amps and preamps, I prefer four feet. and not in the corners. If you think about it, the corners are the strongest structural part of the chassis. You will build up nodal vibration along the lengths of the sides.
However since most chassis are rectangular the opposing sides will generally have the same vibrational frequency. I place the feet on the sides asymmetrically, Two will have to bracket the power transformer, and the the other two to be placed where necessary to balance the component. In general, right against the lip is not preferred
Again experimentation is necessary to determine the precise location. A bit of effort spent will be well rewarded.
Oh yeah often times the fourth foot may barely make contact with the chassis. IT still has an effect.
FWIW and YMMV
With Tenderfeet under a CD player I've always used four, one at each corner. You can vary the distance from the edge, depending on how it sounds.
When I used Herbie's Iso-Cups and balls under an Audio Note CD player years ago I had the best results placing one under the transformer, one centered under the disc transport and the third one at the opposite end of the player for balance and stability. It pays to experiment for the most pleasing results.
R Browne, this is the exact setup the tenderfeet are in undery CDP. I had used 4 at each corner, then used three, in a triangle, with one under the spindle. This created better Focus. Now moving the left rear in and forward, under the transformers, the player is much more articulate, and placement is improved. Bass is tighter, yet less weighty. I like it.
I seem to prefer placing a "stabilizer" on top of the CDP in addition
to whatever footer arrangement you decide to use. I feel this couples
the vibrational energy a bit more effectively then just allowing the
player to do it at it's own pace.
(Of course if you're using a "top loading" transport this option isn't
feasible)
As I recall, my results were quite similar to that which you describe.
During my senior year of college, 1992-3, my housemates and I had a system comprising the Sony CDP-520ESII; Adcom GTP-400 and GFA-535; Pinnacle PN-5+. Since we were college students, we could not afford tweaks, let alone more/better components. Nevertheless, I did possess two sets of SIMMS Navcom Silencers.
With these three particular components, the Silencers worked best in terms of both sonics and balance/ergonomics/stability) in sets of 4, not 3. Moreover, positioning of the 4 Silencers under a given component (more so the Sony CD player, than the Adcoms) mattered.
Remember, my housemates and guests were NOT audiophiles. Perhaps unbiased, these non-audiophiles heard the differences. Some even tried to explain those differences and trade-offs.
Perhaps even more amazing, it mattered, where we placed the lil' blobs of Blu-Tak, under speakers. By placing the Blu-Tak under the corners (versus halfway along each edge) of the speakers, we got a better-balanced sound.
Most non-audiophiles did not say that the sonic differences were HUGE. Yet, the majority easily and definitively heard differences. And it didn't matter if they were male or female.
Interestingly, one [in high school, he played (I believe) clarinet in the band] of my housemates preferred the sound of the Sony CD player, when the Silencers were indeed placed midway along each edge. My other housemates preferred the conventional layout, with each Silencer placed towards one of the four corners.
But yeah, placement of footers can matter. And each component is its own being. When I review a component, I do flip the unit over, and show its underside. Why? Because my readers like to map out the potential placement of after-market footers.
Thank you for the reminder,
-Lummy The Loch Monster.
What is the new configuration of your set of three Tenderfoot feet other than an equilateral triangle? BTW, the default recommended configuration for the Tenderfoot is a set of four placed under a component, and I concur.
Hello Guys. If cdp comes in 2 separate units i.e. Power supply and the other being the disc drive unit...if you only got a set of footers (3)...theoretically...where should the footers go under?
Thanks.
In practice, vibration control footers should be placed under both devices. A good thing is you'll be able to potentially select different kinds of footers for each type of device. IME, in the case of audio components other than a digital transport with an external PSU, I find the PSU often benefits a bit more from vibration control, but since a digital transport creates a substantial amount of vibration, both devices should be considered to be of equal priority. YMMV
I like Herbies products and tenderfeet. Tenderfeet are under an amp, big fat black dots under my speakers and sliders under my racks spikes. However for under a CDP or TT with a motor and spinning media I prefer the CDP or TT to sit on a ball. Al Sekela spoke of the ability to better dissipate vibrations on a ball for these type of devices.
E
T
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