Harbeth, Ton Trager with Blue Tack


I purchased a demo pair of Harbeth C7ES3 XD and Ton Trager stands. The dealer had put a small amount of Blue Tack on top of each support to help hold the speakers in place. The sound has been very enjoyable but several folks have recommended using the stands with out anything between the speakers and stands so I decided to give it a try. After removing the Blue Tack it seemed the sound got more detailed with a slightly wider sound stage but also seemed to lose some thickness in the mid range which I liked. It seems unlikely that the small amount of Blue Tack could make this much difference. Anyone else have an experience like this?

gater44

Yes, Harbeth speakers are particularly sensitive to the coupling with a stand because their cabinets are meant to vibrate and produce sound and are not damped in an attempt to stop it from vibrating.  I heard a pair of Grahams or ProAc speakers (both also intended to vibrate) that did not sound right after the shop's helpers set them up precisely where they were before they were moved.  The owner of the shop heard the bad sound, plucked the speakers off the stand and halved the amount of bluetac being used, and replaced the speakers.  The bass and lower midrange warm returned and the sound was dramatically better.

You might also try Nobsound springs. $20-$30 for set of 4. I use them under my Spendors and they improve soundstage, blackness and speed.