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In Reply to: Does spiking speakers ever lead to overly hot treble? posted by hukkfinn on May 7, 2007 at 13:49:20:
While my answer is no, I have heard this happen in the past and it usually indicates that there is an issue upstream that is causing the problem and spiking the speakers just makes it more pronounced.Most of the time, it is poor AC quality but it can also result from lack of attention to component isolation or poor IC's and/or speaker cables that results in a peaky treble.
I would surmise that his Vienna Acoustics Bachs R just telling him the truth about his system.
JMHO of course,
~kenster
Follow Ups:
and you can't diss concrete? just messing with ya!!Its pretty easy to prove just how detrimental it is to mate your speakers to a poured concrete sublfoor via factory spikes..this instantly leads to awful treble performance. you just have to listen...
what bites is that it improves other areas like the bass & actual imaging in terms of musician placement on our 'stages'. I battled this for about 3 years, finally wised up thanks to this forum.
if you haven't heard just how bad concrete is, you'll be in for a real surprise if you get the chance.
releasing my gear from the 'crete was a truly positive tweak.
matt
"Its pretty easy to prove just how detrimental it is to mate your speakers to a poured concrete sublfoor via factory spikes..this instantly leads to awful treble performance. you just have to listen..."I have been spiking my speakers to the concrete slab for years now and always find an improvement over just setting them on the carpet although as i mentioned, it has led to an overbright/peaky treble in the past and the cause was AC related. Once that was resolved though, treble was sweeter than maple syrup :-)
I think the key words in your statement though are
"via factory spikes". I have my main speaker on short sand filled stands which R spiked to the concrete albiet the spikes are more like cones with a solid/machined construction and the stands have vibration absorbers applied to them via my own proprietary configuration.One could also put an interface between the spikes and the concrete floor to change the vibration transmission characteristics such as the products from Walker Audio which I want to try but have more pressing system priorities at the moment.
One also needs to remember that if the speaker spikes do not make intimate/solid contact on the concrete, whether this is due to a light speaker or poor spike interface, this can add a haze to the sound as the speaker is vibrating on the spike tips and this in turn resonates up into the speaker enclosure. This is one of the reasons that adding weight to the speaker enclosure has the effect of sharpening the image focus.
It's good to be king......LOL :-)
Cheers,
~kenster
it does make all the difference. most factory spikes are pitiful in regards to moving vibrations from the cabinets & draining into the floor...they are just made to keep the speaks from a rockin' - which is one piece to the puzzle for sure just not the whole picture.Factory spikes keep speaker vibrations trapped in the speaker. when these vibes hit the concrete i have a feeling its like an old telegraph signal going at the speed of sound 'SOSOSOSOSOSOSOSOSOSOSOSOS' and that AIN'T good... It would be OK to insert 'May Day, May Day' in place of SOS.
I didn't want to mention Mapleshade but i did want to mention Mapleshade!
Removing the spikes from my speakers was interesting & i found good & bad things with the set-up both ways during the quick A-B comps. In the long run there was no contest though. After removing the spikes from my Lovan rack it was a whole 'nother thing. My TT is so sweet & detailed & thorough now... After realizing concrete was toxic I moved onto MDF. Removing my gear from touching mdf AFTER getting it off 'crete was nothing short of amazing. 5 old ratty empty LP covers under my gear took care of the mdf issue handily.
The understanding that most surfaces were not designed/optimal for electronic gear was most illuminating and a big reason for much happiness in this hobby (without spending major $).
i contacted a few old guru types after the 'crete epiphany & they were all like 'yeah, it sucks...move on...get new speakers now' - as if it was another bit of hidden knowledge that everyone knows. its not debatable, but not in any textbooks either.
this weekend i demo'd a simple system in a home w/hardwood floors over poured concrete subfloors. this is a situation where concrete is more than welcome IMO.
This week i'm experiencing Hot Treble in a big way - I lent out my Room Tunes Tune Pak to a friend...an un-tuned (un-treated) room is quite inhospitable for critical or even casual listening. When the volume gets to a decent level the sound is just about awful, bright & fatiguing. Its amazing how much our rooms hurt the sound if you let them.
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