Barry, I'm 14 years w the Zus. You may be ahead of me, but I'm younger than you...
I must have bought my Unos at almost exactly the time you bought your Duos. I kept them for 17 years and sold them for exactly what they cost me new, but have since upgraded to used (2006 vintage) Duos and more recently to new Duo XDs.I should be celebrating 20yrs anniversary of my Duos today however building work has meant my system has been down for almost 4 months.
But still, 20yrs with the same speaker deserves raising a glass and a big thank you to Graham Tricker for wowing me with his Trios at Heathrow Show.
Your Duos have the 225 subs so 10" drives, as my Unos had. If they were built pre-2002, the bass drivers may have foam surrounds. If yours have foam and these have not been replaced, you may get a big improvement in SQ by getting the surrounds replaced. I was pleased that my Unos had rubber roll surroundsI bought my Duos in 2002. They were already a few years old. Not too many, since they came with the newer (225?) bass systems. Still running great. Over the next half dozen years I bought three Solos (again all used), single channel with built in amp, so that I have a complete Avantgarde 5.0 system for my multichannel albums.
I saw an Avantgarde display at the Frankfurt airport a decade or more ago - IIRC it had a Duo on display.
Larry
Get to hear the new ones end of the monthBarry, I'm 14 years w the Zus. You may be ahead of me, but I'm younger than you...
Zu or Avantgarde?Get to hear the new ones end of the month
Swap the speakers left and right. If the right is now +10dB vs the left it’s the speakers. If the left remains at +10dB it’s the room or system. Then swap the speaker cables. If the +10db moves with the cables, it’s the system. If the 10dB imbalance hasn’t moved, its the roomBasic speaker balance question - why if all settings on a pair Duo XDs are equal, and the room is reasonably symmetrical, would one speaker channel measure consistently with a basic meter , at 10 db quieter than the other channel?
Background - I've been nagged by a 'somethings not quite right' feeling with regard to my new Duos since they arrived a month or two ago. Basically through various sources I got the feeling that the overall balance and weight of sound was off centre and dragged to the left. So I plugged in a couple of different preamps just to check that that it wasn't something faulty with the inputs or attenuation etc.
I've also used a couple of different power amps, including a pair of monoblocks which I've swapped over between channels to make sure to eliminate them as the cause.
Today I've had a bit more time so using the same channel input and swapping it over from one channel on the preamp to another, I measured the sound levels coming from each speaker one at a time, using the same musical input. Consistently getting a reading 10db lower on the right hand speaker.
So I plugged in my laptop to each Duo and checked that the preset, bass volume and EQ page settings were all identical for both speakers which they were.
Am I missing something? Where do I go next?