Very interesting development X, and I look forward to hearing your observations and findings, specifically when using the VBH for speakers.
I have a pair of TABAQ slim floorstander speakers and tried to fit some Dayton Audio spikes to their small footprint, but this did not work for me on my lounge's uneven ceramic tile floor. Despite being adjustable I could never get them 100% stable. I then read and learnt about speaker isolation feet, which I presume is what VBH is. It actually de-couples the speakers from the floor - quite the opposite of spikes. I then managed to get some thick 25mm EVA foam pads and placed them under my speakers. To my ears it does make quite a difference - a very positive difference. Mostly the bass is much tighter and controlled, and even the midrange sounds better. Although it does not look great, those EVA pads are used for serious listening in my lounge now.
I have a pair of TABAQ slim floorstander speakers and tried to fit some Dayton Audio spikes to their small footprint, but this did not work for me on my lounge's uneven ceramic tile floor. Despite being adjustable I could never get them 100% stable. I then read and learnt about speaker isolation feet, which I presume is what VBH is. It actually de-couples the speakers from the floor - quite the opposite of spikes. I then managed to get some thick 25mm EVA foam pads and placed them under my speakers. To my ears it does make quite a difference - a very positive difference. Mostly the bass is much tighter and controlled, and even the midrange sounds better. Although it does not look great, those EVA pads are used for serious listening in my lounge now.
I’d like a version that threads into the bottom of our amplifier builds. Just a thought. Nice feet!
And they would be nice under speakers as well, I quite agree.
Best,
Anand.
And they would be nice under speakers as well, I quite agree.
Best,
Anand.
Making it backwards compatible with the Modushop based footer threads would be an easy upgrade feature for folks without redrilling, etc…you can check on the diyaudiostore or hifi2000.
Fellas can think that their ’premium’ builds could use the VBH footer instead of a standard footer.
I would check with GianLuca directly though regarding the hole size. I think it’s bigger than an M5/M6 hole…and he has nut that mounts on the inside of the chassis that holds the footer.
Best,
Anand.
Fellas can think that their ’premium’ builds could use the VBH footer instead of a standard footer.
I would check with GianLuca directly though regarding the hole size. I think it’s bigger than an M5/M6 hole…and he has nut that mounts on the inside of the chassis that holds the footer.
Best,
Anand.
I'm very interested in such "things", because they really work.
What is your impression after listening?
Cheers
Istvan
I just received some spikes that can be installed on whatever equipment you need to isolate from vibrations. The spikes come with 3M double sided tape to stick to the bottom of your piece of gear. The spike tips rest into the conical depression of the black nylon “black hole” on top. Testing how the spike feet work on my laptop (not that the laptop needs it - but it felt surprisingly nice to type on - seems quieter with key clicks).
On the bench tonight is a test of the VBH using an instrumented hammer and piezoelectric transducer mounted to the plinth of a turntable.
Details in thread here:
https://www.diyaudio.com/community/threads/vibration-black-hole-vbh-feet.403159/#post-7449395
Details in thread here:
https://www.diyaudio.com/community/threads/vibration-black-hole-vbh-feet.403159/#post-7449395
I find the instrumented impact hammer a very cool little tool.
The hammer connects with a BNC coax to its special signal conditioner (provides power to the opamp driver in the hammer force sensor head and cleans up the signal):
Various hardness tips can be exchanged and the hammer has a tuned carbon fiber neck.
The yellow impulse is the hammer signal and the blue is the raw signal from disc piezoelectric transducer mounted on the device under test. In this case, a TT plinth. But could be anything like an amplifier, preamplifier, or speaker.
With VBH feet:
Without VBH feet:
The blue trace vibration is the wooden desk or bench itself moving after it gets struck. This minute motion is transmitted through the feet to the plinth.
The hammer connects with a BNC coax to its special signal conditioner (provides power to the opamp driver in the hammer force sensor head and cleans up the signal):
Various hardness tips can be exchanged and the hammer has a tuned carbon fiber neck.
The yellow impulse is the hammer signal and the blue is the raw signal from disc piezoelectric transducer mounted on the device under test. In this case, a TT plinth. But could be anything like an amplifier, preamplifier, or speaker.
With VBH feet:
Without VBH feet:
The blue trace vibration is the wooden desk or bench itself moving after it gets struck. This minute motion is transmitted through the feet to the plinth.
On the bench tonight is a new speaker crossover development. First measure the raw response then develop crossover in Xsim, then prototype using Wago connectors in P2P. This is a 5.25in paper cone woofer and 25mm soft dome. Bass reflex cabinet in wonderfully done rosewood veneer.
It’s sounding very good. Will listen and tweak XO voicing some more.
It’s sounding very good. Will listen and tweak XO voicing some more.
The Vanguard Scout is a 5.25in woofer 2-way with 25mm soft dome tweeter and bass reflex port superbly finished in rosewood veneer. I am getting close to the final crossover for this speaker. You can have a listen here - in mono.
Amp is EP600 and source is SMSL Su-9n fed by Amazon music streaming.
Amp is EP600 and source is SMSL Su-9n fed by Amazon music streaming.
That's crazy! Did you just have one lying around? Or did you buy it specifically for the development of the iso feet?
In just had one lying around - I have some other projects that used this. Bet you never saw an instrumented hammer before. 🙂
I should have fun and tap on various speaker cabinets made of MDF, plywood, particle board, foam core, etc.
I should have fun and tap on various speaker cabinets made of MDF, plywood, particle board, foam core, etc.
That'd be a great experiment!
Never have! Haha. I remember from the Srereophile review of the Warp One that you work for NASA. Guess it makes sense why you have such cool tech lying around!
On the bench at the factory is the culmination of over a year of work by a very dedicated and hard working team, and we have reached a huge milestone: The Bob Carver RAM285 stereo amplifier has just completed successful first article sound testing. Everything fired up correctly on first start with no issues or drama. The sound coming out of the speakers is super!
Some minor cosmetic work like trimming knob shafts and installing tube cages etc. but the function knob, SSR’s and the power up sequence all works as designed.
I want to thank the team for superb job well done!
Some minor cosmetic work like trimming knob shafts and installing tube cages etc. but the function knob, SSR’s and the power up sequence all works as designed.
I want to thank the team for superb job well done!