Harbeth Super HL5 plus Break-in


The following is an excerpt from the Harbeth User Guide:

"After exercising your new Harbeths for just a few hours they will be fully ready for a lifetime of enjoyment".

After going to the Harbeth site it pretty much said the same thing as the user guide but added that the supertweeter would take a little longer to break-in.
My new Harbeth's sounded the same after I put on around the first 100 hours so I believed the above until around the 120-150 hour mark I noticed (or so I think) the midrange sounding more realistic to the point of more enjoyment! I don't know if I'm actually hearing an improvement or I'm just getting used to the Harbeth sound since the 5's are my first experience with Harbeth in my listening room.

I would like to hear others that have owned or still own the Super 5's and whether or not you have experienced the same thing as me or something else.
routeman21
@prof 

With the Harbeth speakers I have owned I can listen with the grilles on when using solid state amplification.  
With tube amplification there is absolutely no way, grilles must go in the box.  
With tube amplification there is absolutely no way, grilles must go in the box.


Ok, looks like our experiences differ.

I auditioned the HL5Plus using solid state amps.   And on my Conrad Johnson Premier 12 tube mono blocks, the Super HL5plus absolutely sang - open, airy, realistic, no problems at all suggesting the grills needed to be off once I used tube amplification.



For the most part, I've left the grills on my Super HL5 Plus, mostly because they are in a somewhat high traffic area in my living room.  I keep the grills off my P3ESR, they are in pretty safe spots.  I love the way both sets of speakers look with the grills off.  I don't notice a significant difference in sound either way.  And I use tube amps with the HL5s.

I’d say my experience with the 5 plus is pretty similar to the OP. I was not that impressed right out of the box. But over time, I’ve become pretty happy with them. I really can’t tell the difference between grilles on or off. And I do think they sound better in a near field set up. Currently grilles are off, using SS amplification and Resonant Woods stands. A recent listen to the Jamaican version of the Wailers “Catch A Fire” album was a transcendent experience. I don’t think they’d ever be my one and only speaker but I do enjoy having them in the rotation. 


In my experience, the Skylan stands made the SHL5s sound dull. I tried putting some hard interfaces on the stands, casino chips as I recall, which improved the sound, but I eventually went to an Epos open-frame metal stand, which was far better. So IMO, the SHL5s are quite stand-sensitive and you have to work with them. I don’t know if the Epos stands are still around. Here you go -

https://www.hifi4sale.net/t30619-epos-11-speaker-stand-used