Thank you Tendaberry, excellent info for improve ...Tendaberry wrote: ↑2020-04-05 01:42A bit of off-topic then: Since I cannot afford, nor place two Harmonihyllan at the moment and I know that the Quadraspire Sunoko Vent wall shelf isn't the best on the market, I decided to look into what I can do to improve it at a low cost.
A friend and I tested about 10 different boards in a self-built metal frame with spikes, which were used as a support for his Solos. The boards were made from different materials and had different thicknesses. The differences were surprisingly big and most were really bad. Then we tried the shelf from the Audiotech wall shelf and that was really good.
Well, you can't buy those anymore (I needed 6 and my friend 4), so we started thinking and came upon airplane grade plywood. There's at least one very good manufacturer of audio tables, that uses a very similar shelf.
So we found a shop that sells them in various sizes and thicknesses. I use 8 mm with 16 layers of birch, they are extremely stable, yet light. Cost is about € 32,- per 50 x 50 cm shelf. I cut them to 50 x 40 cm (you have to use a very good electrical saw). So I tried one first under the LP12 and the timing was a lot better and everything just came together. Then I tried it under the ADSM and the same thing happened there. I put Oehlbach Mini Spikes (cones 11 mm) in each corner between the Quadraspire and the new shelves. Do not put them in the middle of each side, that's a lot worse.
P.S. Yes a bit of off-topic, and it will be good to be moved to ...