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).
lowrider57

Showing 5 responses by adg101

I run my ModWright LS 36.5 on 3 Daedalus DiD,s isolation devices on a bamboo cutting board from Ikea "Lamplig" on 4 RTOM Moongel dampening gels on my rack. The cutting board and gel pads are very affordable and made a difference but the DiD's on their own are incredible. I wasn't having any issues with noise but per Dan Wright's recommendation tried the DiDs and am floored how they have elevated the sound of my 36.5 to another level. The 36.5 is great on its own but with the DiDs, piano, cymbals, brushes on a snare are much cleaner and have longer decay: the 36.5 breathes more... more open.

Try the IKEA Lamplig with the Moongels first. They're cheap. The cutting board has a grove on one side so face that side down and place four Moongels to the inside edge of the grove. This tweak with shipping is less than $40. The DiD's are $160 ea. and worth it. I only have one set but will be getting another set for my CD player. I tried them under my CD player and they work there as well but the improvement was much greater on my tube preamp. I'm using Herbie Tube Dampers so I was a little surprised how drastic the DiDs improved things. 

If you live close to a Guitar Center or any drum shop you can get Moongels there. Us drummers use Moongel on cymbals and heads to control resonances. Try just the Moongels under the feet of your pre first to see if that alone works. A package of six gels is $7.
I only use four of the moongels at the corners. Try it that way and see if it changes. You mentioned earlier you use the Herbie tube dampers I believe. I use them too and prefer them. I run my dampers all the way to the top. If you have them in the middle try moving them up if there's room or completely off.

Maple is definitely a softer wood and just like drums it will be a little warmer sound. Bamboo is very rigid and dense. The moongel pads are doing the fix more than the bamboo shelf I suspect. Try the moongels only; directly under the stock feet or your preamp taking the shelf out of the mix. Try the other tweaks noted above first.
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.