Thiel Owners

@thieliste 

The shag carpet combined with underpad is pretty thick.

No I'm not having stability problems without the carpet spikes.  You can wiggle the speakers a big if you grab them, but they feel solid and not easy to push over.

I never actually tried the official Thiel spikes under these speakers.  My previous Thiel 3.7s didn't come with spikes, but the 2.7s came with the outrigger and spikes.

I hadn't bothered trying them and I included that stuff with the 3.7s when I sold those.  I think I didn't do the outriggers because I liked to experiment with different speaker positions and it was much easier without spikes.  I also used Herbie's slider footers underneath for a while, which didn't raise the speakers much.

Every time I've raised them I didn't care for the tone as much, so I wonder if this has something to do with a tonal change due to changing the bass reflection boundary when raising the speakers.

@tomthiel ​​​​​​thanks for the inputs. I will see what I can do with the placement of the speakers. Room is definitely small. Now only treating first reflections with some absorbent foams.

Using custom cables as below.

The power is shielded cable with rhodhium Iec.

The speaker is awg4 super thick shower ofc cable with silver and gold plugs

The rca is twin core double shielded upocc from japan with silver plated plugs

Btw. Do you raise the Thiels 1.5 higher with stands? Currently I don't have too much issues as my sofa is low. Would it change the sound signature as some of you have mentioned?

Some thoughts regarding speaker height -

Although the distance from the woofer to the floor has some relevance to the frequency content, its contribution is minor compared to the relative distance of each driver to the listener's ear. Those relative distances are critical to preserve the integrated sound composed of individual onset transients from each driver. The distances are established by the relative placement of the drivers along their baffle and the ear's relationship to those launch points. Higher frequency geometry is more critical due to their small wavelengths.

Thiel design assumptions are an ear at 36" from the floor and a distance of 3M (10') with a minimum of 2.5M (100") more or less. Moving the speaker higher or lower is quite similar to moving the ear higher or lower. The relative driver distances are distorted.

A fairly safe way to keep the geometry straight with very little compromise to the integrity of the composite wave is to vary the vertical angle of the speakers. I suggest marking a spot 36" from the speaker bottom, and making a target at your actual ear height. Hold a builders' square at the speaker height mark and tilt the speaker until your sight-line hits the ear target. If you raise the speaker by any means, the compensation is to tilt forward to bring the triangulated geometry back to focus at the ear. (And vice-versa for high seating.)

If you use REQ, FuzzMeasure, etc. the proper tilt, and a mic at ear position will produce the best-looking step response. Other tilts/heights will produce a hole or lump or offset between the early-arrival tweeter onset transient and later-arrival woofer onset transient. Later Thiel products with coax / coincident upper range drivers solve the tweeter x midrange issues, but the high vs bass timing issues still remain. 

Thiel's design target for bass Q is .7 in an anechoic environment. That is on the articulate / lean side of the tracks. Room gain will augment and time-extend the bass to the extent that the room is large enough to support bass frequencies.

Here is a link to a relevant article by Robert Harley published in The Absolute Sound. 

prof

If you would like to try the original speaker spikes that came with the 2.7s 

I could send you a set since I replaced them with the spikes used with outriggers ,

the originals have a rounded point so they would sit on your shag carpet .

Rob