I use Mrs HH to deal with reflections off the back wall.
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Does she wear an acoustic smock?
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Thank you Jonathan for the helpful insights.
Did Townshend say whether a podium is worthwhile under the turntable if you already have the whole rack on their Seismic Corners?
I ask because I am considering trying either a podium under the turntable, or their Seismic Corners under the 2 racks.
Best regards, BF
I think that the suggested vertere approach is podium under the turntable, the sells something really similar to townshend
Jonathan if I got properly the bar you mentioned is the two cells per bar am I right? Theoretically you need 2 bars per speaker
Thought I was on the Doctor Who topic for a moment.
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Small room so BIG bass traps (GIK Monster and Corner) behind speakers and 242 panels to remove reflections from side and back walls.
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Thinking of aesthetic acceptability for some, your pic provides an opportunity for example (but certainly not meaning this as a criticism of what youâve done): The corner traps could have another added on top taking up to the ceiling (might need a custom height) then theyâd be virtually invisible,. And if desired that could even be completed by putting skirting board in front. And if the panels on that front wall were colour keyed precisely to the pink feature wall colour, which people like GIK can do if given a sample of the colour or the Pantone reference, they would scarcely be noticeable, instead of standing out as acoustic panels as they do now. The corner panels of course could be coloured the same way, the weather that or white as a nice contrast is nicer of course is down to the individual (or other household members!).
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Do you think doing the corners floor to ceiling makes a different re just halfway up. I was contemplating going floor to ceiling in the corners and GIK recommended it too but real life experience is always valuable!
Gary
My understanding (but I havenât yet had the corners ready to be able to do in practice) is that it is difficult to do enough bass trapping, so floor to ceiling better where it can be achieved. And bass traps are most effective in a corner where three surfaces meet compared to just two, so if, say, using two 1.2m tall traps in a wall corner of a 3m high room, it is more effective to have one at the top and one at the bottom with a gap between than the two sitting one on top of the other on the floor, though much difference if makes audibly I donât know!
I bought all the panels off ebay so didnât have a choice of colour. My wife is happy as this is my office/dedicated listening room! I have thought of buying another pair of corner panels but the room has 2.6m ceiling height so I am not getting many ceiling reflections (I think!)
Re corner bass traps
Reading into the subject of bass in small rooms, and talking to GIK plus two of my mates who have treated their own listening rooms, you could say itâs really hard to overdo corner absorption treatment.
Because I was doing a diy approach it was relatively easy to play around with different combinations. I ended up with floor to ceiling in the back corners (30cm of absorption with a 20cm air gap behind) and floor to sloping ceiling on the front corners (30cm of absorption with a 10cm air gap behind.). Then obviously the first reflection points.
It has been very effective and has allowed me to upgrade my PMC twenty26âs to Fact 12 Signatures with ease.
Having said all that, if you arenât detecting any room nodes in your listening experience then I would say you are already sorted.
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What amazes me is the number of listening rooms with hard floors, and ownersâ struggles to reduce reverberations. A carpet would sort all of that.
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Does accoustic plasterboard have any effect?. Anyone with experience?
I used acoustic plasterboard and an acoustic membrane in between - it didnât stop the sound of my system echoing all over the house!
Adding in the GIK panels did help improve the sound. Obv I didnât A B test with non acoustic plaster board but my suspicion is it may have reduced mechanical noise travelling around my house but didnât make any difference to the sound quality in the room.
Gary
The only acoustic plasterboard Iâve seen and used (in Britain) is primarily intended to reduce transmission through the wall, nothing to do with attenuating anything within the room. However its greater density and thickness will lower the resonant frequency of panels relative to standard plasterboard and so will have some effect on the sound in the room compared to walls with standard board, though whether positive or negative depends on everything the room.
Yes with the bars youâre getting 2 cells per bar and thus 4 load cells per rack. The Seismic corners would give you double the number of load cells (2 per rack corner).
The most important thing is to add up the weight of equipment per rack and then talk to Townshend and they will tell you which grade of load cells you need (there are also tables on their website). If you run a GyroDec then be aware that the weight listed on their website is for the Spider version of the Gyro - the full acrylic version is considerably heavier and I had to change load cells for the next grade up for my Seismic platform.
In answer to your question Bluesfan about whether itâs worth putting a podium under the deck if you are already floating the rack on seismic corners I havenât asked them. The way I ended up with both is that they sent me a Seismic platform to try under the Gyro which cut down the issues I was having with footfall by about 50% and also dramatically improved the sonics. I reported back to them that my footfall issues were reduced but not cured, so the next time they came over they brought the support bars. I put these in place and that made the deck completely immune to footfall.
I havenât experimented with and without the seismic platform in place, but my gut feel says that youâll get almost all the benefit just by floating the rack. There may be some incremental benefit to be had adding a platform or podium to the turntable but I canât say for certain until I get time to experiment. I guess the additional platform does indeed provide some further immunity and damping, but floating the rack is an absolute game changer frankly⌠I would probably do it in the following order:
- Float the rack
- Float the speakers with Seismic Podiums
- Add additional platform or Podium under turntable.
Just as an addendum be aware that turning the height adjusters to level the rack is near impossible once there is weight on the rack so you will need to buy a ÂŁ20 inflatable wedge from a DIY shop to lift each corner of the rack in turn to enable you to turn the adjusters. I bought one of these and it made the job a breeze: https://www.screwfix.com/p/winbag-inflatable-air-wedge-160mm-160mm-x-160mm/1363K?tc=IB1&gclsrc=aw.ds&gad_source=1&gad_campaignid=21540160695&gclid=CjwKCAjwiezABhBZEiwAEbTPGNdfNT-kMnyf0l2JkxQ7DvCc16amdlxQpemHfD0N6kloSujSJt8KDBoC9L0QAvD_BwE
Also think about getting a decent level if your turntable doesnât have one - it makes levelling anything much easier. I use the AVID bubble level and itâs magnificent - my ÂŁ10 Amazon bubble level was inconsistent and hopeless⌠The AVID is precision engineered and simply superb - it also fits dead centre over a turntable spindle and weighs exactly 180g to simulate the deck loaded with a record. I have a feature on all these tips for optimising replay/setup coming out soon for SoundstageâŚ
Hope that helps,
JonathanG
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Dedicated listening room (double bedroom). A combination of bass traps, absorbers and diffusers supplied by GIK. Canât do anything about the window unfortunately but each pane has two Marigo âwindow resonance discsâ which I was sceptical of, but surprisingly made a small but worthwhile improvement.
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I do love those B&W speakers!!! So elegantâŚ
JonathanG
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