Tagged: Warm up
December 26, 2020 at 1:45 pm #710lotus123Participant
@chungih, PS audio has 60-day return if you don’t like it. Uncle Paul says for the much investments, a little return shipping is well worth it because there is nothing more true than having the gear in your own system at your own listening environment.December 26, 2020 at 1:49 pm #711
lotus123, good point. Another amp that is interesting to me is Carver 350 tube amp. Anyone hear them with SL?December 26, 2020 at 6:12 pm #712
There are some VTL amps on Hifishark, from MB450 to 30 year old 225s. You hinted that VTLs are less reliable than Atma Sphere. In what way?
I heard from an owner of 225s that he hadn’t had any troubles. Shipping these 100 mono’s back to the factory would be a hassle.December 29, 2020 at 12:50 pm #725hpfish10Participant
Chungjh, how hard was it to upgrade your bias supplies. One of my A1 panel plays ok but even setting it at max I could not hear any crackle so I am thinking to upgrade the bias supply.December 29, 2020 at 1:05 pm #726blgtrioParticipant
Hi hpfish10, swap backplate from one panel to the other to see if the panel still does not make a crackling sound. If it does crackle when reversing the backplate you may have a fissure in the insulation of the panel which would require sending back to Sound Lab.December 29, 2020 at 1:17 pm #728
If you know how to solder, it is a piece of cake. Unfortunately, I don’t know how to solder. I paid someone $85 to solder the 6 wires. A new bias supply will run you $295.December 29, 2020 at 1:27 pm #729
The new regulated bias supplies are straight forward to install if you can do easy soldering.
On my backplates, the new bias supplies would not fit horizontally. So, I had to stand them on endwith removal of one plastic flange and secure them with hinge angles and glue.
If you have a larger backplate, they should fit in. Either way, they will fit in.
Roger will send you the bias supplies with sufficient lead length and a new bias pot and schematic for installation. All is straight forward and takes under an hour to fiddle through for each panel. The price from SL is most reasonable in MHO.
Highly recommended to do this. My opinion is that new bias supplies provide almost twice as much bias output as the older unit and is ac input voltage regulated to boot.
KenDecember 29, 2020 at 1:29 pm #730
Which model SL do you have? It sounds like an older model.
JayDecember 29, 2020 at 2:31 pm #738
Yes, I had an older model on the Pristine 2. I think I purchased them back in the mid 1990s.
Since then, diaphragm change, copper diffusion ring, power supply, back plate upgrades, new Reg. bias supplies and a special order design modified 560 base focused panels fitted to the pristine 2 metal frame. Roger says there is nothing more I can do with these backplates.
KenDecember 29, 2020 at 2:33 pm #739
Wow, I am impressed with your loyalty to your Pristine 2. Why didn’t you just upgrade to new ones? Cost?December 29, 2020 at 2:59 pm #741
I am the same way I got mine for $1300 and I could possibly add another 2k in upgrades. A M545 would be like 14k would It REALLY be that different?
It would be smaller by 1/2 footDecember 29, 2020 at 3:00 pm #742
Mine may be pristine 1 for all I know.December 29, 2020 at 3:01 pm #743
Yes. The series of upgrades over the years was not that expensive. The new base focused panels were very cost effective vs purchasing new speakers. Although I do not have the consummate backplates, I have many of the updates in them and to my mind, saved thousands to get a big upgrade with the a unique new “560” base focused panel in a pristine panel metal stand.
Yes, I would like to have 6 or 7’ panel, but in a smaller condo dedicated audio room, they work great.
Running them with a heavily upgraded and modified VTL 225t mono blocks and they have plenty of drive for these panels.
KenDecember 29, 2020 at 3:06 pm #744
How much did the 560 panel cost?December 29, 2020 at 3:09 pm #745
I was quoted 6350 for the newest panel from Roger. PX the whole deal
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