2. tech-talk
  3. 123279-2280

Vibration Control for Lightweight Tube Components

I'm looking for suggestions to isolate a lightweight tube preamp from vibration and resonance. Not acoustic vibration, but physical vibration from the stereo rack. When I touch the shelf the preamp sits upon, the sound can be heard thru the speakers.

I am using a heavy furniture grade stereo rack for my components, all using Herbie's Tenderfeet for isolation, including my TT. The preamp only weighs 7 lbs. and has Herbie's tube dampers applied, but needs to be decoupled from the heavy wood shelf. I've tried the Tenderfeet and Vibrapods under the preamp, but neither provided isolation from vibration.

So, what are owners of lightweight tube preamps and amps using for vibration control? (there is a limited amount of space between the shelves).
128x128lowrider57
adg101
1,062 posts
 
Ha... another drummer. 

The myrtle wood blocks work really good and I too use them under most of my gear instead of the stock feet; use three per. I use the stock feet on my table and my preamp I run three Daedalus DiD's. All equipment sits on bamboo w/ the moongels except my amp as it weighs too much for the gels... it also has two stacks off three of the wood blocks. I have to stack them on the amp because the stock feet are tall. I use Ayre myrtle blocks which are the same as the Cardas brand.

The Daedalus DiD's are remarkable and I'll be getting a set for my cd and amp next. The wood blocks are very good but not even close to the DiD's. If you get a chance to try the DiD's you'll be hooked.
lowrider57's avatar
lowrider57 OP
5,417 posts
 
@bpoletti, no I haven't.

@r_f_sayles, the Isonodes are adhered to the bottom of the chassis.
Let me clarify this issue; my system has always had lush, warm sonics using a preamp on the pine shelf. With the new lightweight preamp, it still had the same timbre (due to tube selection), but suffered from resonances thru the shelf.
I tried Herbie's, Vibrapods, and now Isonodes; all kept the warm sonic signature, but the Isonodes provided greater detail.
lowrider57's avatar
lowrider57 OP
5,417 posts
 
Tomorrow I'll play with placement of the Moongels, and I do have various pieces of wood to try.

adg101... what are the dimensions of the Daedalus DiD's, specifically the height?
I have a height issue with the large tubes now that I've added the bamboo board.
geoffkait's avatar
geoffkait
23,365 posts
 
Please note for most applications small springs don't require a board of any type so that eliminates that variable.  Also, if one wishes to use a board or granite whatever, due to the nature of mass of spring operation/function the physical characteristics of the board or slab are minimized since the board or slab itself is isolated from structural vibration hence can't get too excited.
mesch
3,481 posts
 
I feel somewhat remiss in that when I made my last post I didn’t see the previous 3 posts on page 2.

Anyway, I purchased a set of Moongels yesterday and will be looking into the mentioned replacements for equipment footers. These things I will employ when I get back from a month of travel to the southwest US. 

More to discover