I thought that I had better start my own thread
These speakers were bought by myself about 2 years ago.
They seemed in very good condition and I was told that the veneer had been done together with the bass units being repaired.
I was also told that the mid treble panels had been serviced by One-Thing.
At first they played just fine until about a year ago after I moved house.
First I noticed some distortion in the bass from one of the units.
On closer examination I could see that an incredible bodge had been performed.
Each bass unit had two surrounds.
One was formed out of thick paper and a second (12 inch) foam surround put on top.
More recently, I noticed that I was missing the treble.
This coincided with the building of a new housing estate at the bottom of my street.
About 40 houses were added to the mains transformer until one day it blew up.
When it was replaced, I noticed that my treble returned some of the time.
I then started measuring my mains voltage and found that when it was low (at around 18:00) my treble was low, but later at say 23:00 the sound was much better.
I phoned One-Thing and the suggested that I send in the energiser units for repair, as fluctuations in voltage should not affect them so much if at all.
When I have time, I will send them in for repair.
Now regarding the Bass units, I now have Leak Sandwich 13 inch units which are a lot better.
I had to do some modification in that I needed to remove about half the speaker stuffing to make these units perform correctly.
In order to prevent the stuffing getting into the bass unit and to keep the stuffing central and suspended, I purchased two packs of 3 laundry bags (the sort to use in the washing machine). This has worked well, as before, with less stuffing it was settling to the bottom.
Now it is all where it should be, in the middle.
I was still noticing a but of a mid bass honk which I thought may be a reflection from the rear panel.
To minimise this, I bought two rubber backed natural door mats.
I used spray carpet adhesive to stick these.
This seems to have worked as the sound seems much cleaner than before.
I may, in the future, do the same to the other internal panels.
Now I am left with three main resonance nodes at 54 78 & 111 Hz.
Depending on the kind of music being played these can show.
Now it may be that when I get my energizer units serviced, the increase in treble output will mask the bass issues, but I would still like to know what to do to minimise.
It may even be a function of my room, because I do not remember them being so obvious in my old house.
One may wonder why I go to such a lot of trouble.
It is just that when working correctly, these speakers can produce magical sounds.
These days I am using a
Focus One recodr deck with SME III arm
Conrad Johnson PV9a pre-amp
Art Audio Quintet power
plus Chord Cables
I will, when I get time, get my Alphason Sonata back as my main source.
There is also a Unico CD player for digital and for streaming I have a Marantz unit.