S-Man
StrivingON
This might cause it to get too hotTry wrapping it in thick neoprene foam.
This might cause it to get too hotTry wrapping it in thick neoprene foam.
FET regs each driven with their own supply power supply. So the Tiger has 4 outs 2 providing 2 x 52V using 35A bridge single 22000uf and 2 x 55V single 10000uf for the front end. So not an 'optimised' power supply using Schottky or multiple capacitor banks and also long wire leads. All on a test chassis I use for testing my amplifier builds so the power supply has room for improvement.Details, man, details! You can't just throw that in!
Confirmed. I'm still running a stacked MeanWell supply with a pair of NCC200s in my bedroom. That amp is very fast and detailed, but is never expected to "slam" (which is good, because it can't).I know Mike did some testing with some cheapo Meanwell supplies a while back and was impressed with the imaging they produced. The problem was with the transients and attack - they couldn't respond to power delivery which was their downfall I think. But properly designed I feel they can provide the SQ benefits of an EI transformer with the transient delivery of the conventional transformer - capacitor bank solution.
Some years ago a builder (may be more than just one) over on DIYaudio did add some uF between a Meanwell SMPS and the ACAmp project with very good results, there was a bit more than just a pair of caps as I remember, a sort of soft start I think.Did you ever try adding some capacitor banks to the Meanwell. Say 10000uf per side. They may cause the power supplies current limiting to come into play but worth a try I think?
It was discussed back when I was experimenting with it, and someone smarter than I was suggested that it would not be a good idea to put a bank of capacitors after those supplies. Perhaps it would be fine though.Did you ever try adding some capacitor banks to the Meanwell. Say 10000uf per side. They may cause the power supplies current limiting to come into play but worth a try I think?
I was lucky in that I spoke to Les just before Christmas about the SE230 boards and he offered me a deal. I could have the SE200 boards to fit myself or for not much more I could have the SE230's fitted by the man himself / Gavin. I took the latter and I am well chuffed with the results. Much more grown up than the Naim 135 clones which I had . Cost of UPS to send and return the pair of amps to Les was only about £50I think given that the SE230 is not being sold for DIY fitting, so you would have to send the amps to Les to fit the boards, that probably makes your decision for you. The SE200 amp I built here pretty much mirrors what OzBrit says above, and was an immediately obvious uplift on the Qudos amp I have.
Mike has plans to try his SE200 with VBE so he will be able to give feedback on that configuration.
I gave tried both the the SE200 and SE230 boards on a test rig with a regulated front end (not VBE, actually the regulators on partially built NCC300 boards, no amplifier components) and felt there was a lift in SQ by doing so. Problem was my main amplifier is dual mono, twin secondaries on a Canterbury windings with minicap6s so difficult to do proper comparisons. My test rig has an inferior PSU, tiger toroid four secondaries, single 22000uf caps for the back end and single 10000uf caps for the the front end. Rectifiers were standard 35A bridge across the board. So seperate supplies for each side and front and back but not as good as on my main amp. Wiring on my test rig was also quite long compared with nice and short on my main box.
Having said all that I did think the 230's did sound particularly good with regulated front ends.