CD44hi Posted December 9, 2017 Report Share Posted December 9, 2017 Anyone here has one of these singlepower solid state amps around? I know they were made in a balanced configuration? I remember at some point there were a few units around Quote Link to comment Share on other sites More sharing options...
SeaWolf Posted December 9, 2017 Report Share Posted December 9, 2017 Spritzer take/fix of it is offered in the mjolnir audio site ATM. Quote Link to comment Share on other sites More sharing options...
EdipisReks1 Posted December 10, 2017 Report Share Posted December 10, 2017 I have a balanced SQ that KG fixed. It belonged to Headphone Addict. It really sounds very good, but the split volume pots is a pain. Quote Link to comment Share on other sites More sharing options...
CD44hi Posted December 10, 2017 Author Report Share Posted December 10, 2017 Jacob, that is more or less the type of unit that I am looking to check out. If you ever think of parting with it, hit me up, we can go from there. Thanks. Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted December 10, 2017 Report Share Posted December 10, 2017 the singlepower squarewave definitely does not like low impedance loads (50 ohms) making it balanced causes even more trouble. very few of the balanced versions were built, and they are balanced out only when balanced in, and depending on the power brick, they burn up real easy. Quote Link to comment Share on other sites More sharing options...
spritzer Posted December 10, 2017 Report Share Posted December 10, 2017 Go power bricks!!! We should post some of the internal pics of the SS-1 now... 1 Quote Link to comment Share on other sites More sharing options...
CD44hi Posted December 10, 2017 Author Report Share Posted December 10, 2017 Thanks Kevin, yes if I get to try one, I was planning to use the Senn HD650 or HD6XX. Regarding power, that I have no idea [emoji12] Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted December 10, 2017 Report Share Posted December 10, 2017 here is why you probably don't want one unless its dirt cheap. you will need to add heatsinks, not easy, and fix all the acetate failure 1 Quote Link to comment Share on other sites More sharing options...
CD44hi Posted December 10, 2017 Author Report Share Posted December 10, 2017 Not much room in there for heat sinks, I see.Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
mwl168 Posted December 10, 2017 Report Share Posted December 10, 2017 Looks to me that room for heatsink is the least of the problems. Quote Link to comment Share on other sites More sharing options...
purk Posted December 11, 2017 Report Share Posted December 11, 2017 But it has blackgates! Quote Link to comment Share on other sites More sharing options...
Hopstretch Posted December 11, 2017 Report Share Posted December 11, 2017 Good times! Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted December 11, 2017 Report Share Posted December 11, 2017 no servo so blackgate output caps on a solid state amplifier taking 1/3 of the board space. yep, great idea 2 Quote Link to comment Share on other sites More sharing options...
purk Posted December 12, 2017 Report Share Posted December 12, 2017 I did remember that the SQ wave also had a horrible USB DAC section. It was a pretty harsh sounding DAC. The giant wall wart was a good selling point for $1500 amp. Quote Link to comment Share on other sites More sharing options...
spritzer Posted December 12, 2017 Report Share Posted December 12, 2017 We need more SS amps with output caps. Who doesn't like the sound of electrolytic caps in the signal path? 1 Quote Link to comment Share on other sites More sharing options...
JimL Posted December 12, 2017 Report Share Posted December 12, 2017 Yes, but they're EXPENSIVE caps. Expensive caps add audiophool credibility! Quote Link to comment Share on other sites More sharing options...
Craig Sawyers Posted December 12, 2017 Report Share Posted December 12, 2017 Black Gate caps have not been available for a decade or so. Rubycon used to make them for Jelmax; I think there is graphite powder in there. Rubycon decided that their business model, in making capacitors by the billion did not match making small numbers of boutique parts for the audio industry, and pulled the plug. Actually they pulled it twice. First time, they were persuaded to continue. That lasted a year or two, and then goodnight Vienna. So any NOS Blackgate caps out there have been sat on a shelf for at least ten years. And if they are recent, they are fakes. And dontcha just love vertically mounted resistors. I haven't seen that sort of thing since TV's in the 1970's. 2 Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted December 12, 2017 Report Share Posted December 12, 2017 to save space I sometimes do vertical resistors. but everything else is wrong with that amp. Quote Link to comment Share on other sites More sharing options...
wink Posted December 13, 2017 Report Share Posted December 13, 2017 Cavalli's eXsTaTa had vertical resistors..... 1 Quote Link to comment Share on other sites More sharing options...
Dusty Chalk Posted December 14, 2017 Report Share Posted December 14, 2017 Do you think the electrons do more work going up and down, fighting gravity? 2 1 Quote Link to comment Share on other sites More sharing options...
JimL Posted December 14, 2017 Report Share Posted December 14, 2017 On 12/12/2017 at 10:03 PM, wink said: Cavalli's eXsTaTa had vertical resistors..... That was the least of its problems. Quote Link to comment Share on other sites More sharing options...
wink Posted December 14, 2017 Report Share Posted December 14, 2017 Being designed by Cavalli at the cheapest possible price was priceless. Who else would design a power supply for beginners that could not be operated without a load, or else POOF.....!!!!!! Instant junk. On top of that, the load resistors were specced so that they could not be left on too long as the output voltages were adjusted. Now, imagine a newbie doing the adjusting and being a little slow. Result, resistor overheats and goes open circuit. That side of the supply is now in no load condition and hence, blows. Just what a newbie builder needs to turn him off DIY. All this for the sake of a few extra parts. Marvellous logic there...... Quote Link to comment Share on other sites More sharing options...
spritzer Posted December 14, 2017 Report Share Posted December 14, 2017 I remember when they dismissed my comments about that back in the day, goes to show why the whole cult aspect of Cavalli was so stupid. Nobody called him out on his stupidity and lord knows there was a lot of that going around... Another bit were the input devices, needing to match those not just into pairs but to a specific range. How that was a good idea in a budget amp is beyond me... Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted December 14, 2017 Report Share Posted December 14, 2017 Another bit were the input devices, needing to match those not just into pairs but to a specific range. How that was a good idea in a budget amp is beyond me...I will defend this one as I do it a lot. Picking JFETs that don’t need degeneration is optimal. It’s done in more than one commercial design as well, such as the First Watt J2.Now, the other shit I can’t defend Quote Link to comment Share on other sites More sharing options...
JimL Posted December 14, 2017 Report Share Posted December 14, 2017 (edited) Then there's the input diff amp with resistors in the tail in the eXstatA - because it's cheaper than a current source and almost as good, according to Cavilli - which was duplicated in his LL because...who needs a little more expensive and better, for a spare no expense SOTA amp for big bucks? Edited December 14, 2017 by JimL 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.