I do, a very satisfied user. What do you need to know?
Andre, as you know Peter is one of the most knowledgeable people in this business, and one of the friendliest/happiest to share. It would be great if he could participate.
I tried a fair number of products for isolation prior to Symposium, but to minimal effect eg Mana, Grand Prix, HRS, and was ready to give up on isolation as an area of interest until I got the chance to audition a Symposium Acoustics Isis stand, and got significantly improved results, incl. brilliant levelling/isolation to my tt which uses a v. sensitive linear tracking arm - the perfect levelness and Rollerblock isolation enables me to allow free horizontal displacement w/no disturbance of the arm. SOLD!
My next port of call is to isolate individual components w/a complement of Rollerblock 2 modules.
It would be great to get a counterpoint to the Stillpoints products which get so much coverage on this forum.
i've owned the Symposium Svelt Shelf for 7-8 years and have used it in various places...as my system has evolved.
it works well for resonance control in tight spaces, and is well built with stainless surfaces.
recently i emailed Peter to let him know it also works well to prevent noise from my digital player affecting my phono section inside my darTZeel preamp. i stacked my Playback Designs digtial on top of my dart pre so they both could benefit from my Herzan active isolation. the proximity of the two units added noise to the phono. i inserted the Svelt Shelf and no more noise.
Peter said he was not surprised to hear it worked that way, but had not thought to mention that in his product info.
and btw; i thought to email him as a result of your piece in Positive Feedback....figured he would want to know.
Would it be too much of a downer for this thread to say I replaced Rollerblocks with Stillpoints SS (admittedly somewhat more expensive) under my speakers?
recently fitted them under my TT/Amp/Speakers , very impresed
Andre, I run Zu Audio Definitions 4 spkrs, w/downfiring sub woofers, and they really benefit from removal of the stock spikes and resting on Symposium Rollerblock Jnrs. It's a little surreal watching these near 100kg cabinets wobble about the spot when you push them. As w/all things vibration control there initially seems to be a trade off in bass energy, but as you get used to the more neutral and stable soundstage that emerges w/the Rollerblock Jnrs you realise that it's not bass energy that's gone missing but layers of cloying euphonic colouration, replaced by bass that's more linear, extends deeper, and doesn't adulterate the midband nearly as much.
However this change in bass texture takes a little getting used to, fianally I really feel that the change is a massive impvt across the board.
Andre, the wobble is limited and not self sustaining. Only a major force would push the spkrs off balance, but that would be the same w/spikes anyhow. Then again, I do live in a kid-free, pet-free environment!
I really do believe the partial decoupling prevents bass energies accumulating in the cabinet, but the hard materials involved (metal cup/ball bearing) maintain solid continuity of support.
I always find that changes which predominantly alter bass performance the hardest to call. A recent amp demo made the bass much more powerful, but the spectrum was tilted down so that it dominated the sound, and I turned it down as a purchase.
The Symposium Rollerblock Jnrs under the spkrs were a lot more subtle in their effects, and listening over a few days revealed the change to be a ridding of distortion/colouration, and hence I've been happy to keep them.
I will tell you what, you have inspired me to give it ago!Andre, you've got nothing to lose by trying Symposium isolation under your spkrs. The consensus w/Stillpoints in similar situations is that major gains are to be had w/spkrs. Suspect many would be smiling if they used Rollerblock Jnrs.
My main dilemma is whether to use "half" cups ie one of the pair of Jnrs, or both cups - my issue w/the Zus is that using both halves of the Jnr cup raises the spkr higher than nominal height w/factory spikes, and w/the floor-baseplate space being critical vis a vis the downfiring sub.
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