Interesting, thanks for sharing that as I had not considered it. Makes me ponder if STAX factor this into their amps at all or its still the rule of linear is linear and voltage / amplitude as flat as possible across the audio spectrum…

This is something I have never seen a straight answer on what is the max safe voltage before the diaphragm hits the stators. I would have thought it was related to the bias voltage but most direct drive seem to be 1600Vpp max? Honestly I rarely saw 300Vrms on my meter with music just watching...

So heres the issue… Most manufacturers “rate” their voltage swing at 1Khz… but that is the easy part. What should be happening is showing maximum voltage swing into standardised load from 20Hz to 20Khz on a graph… If you refer to my last graph, my STAX SRM-1 meets or exceeds its Vrms rating at...

It would be interesting to play further in just a test setting. I get the impression that 2 x 1630 is starting to run out of drive current as a 2 probe measurement is starting to pull down the output voltage at higher frequencies, similar to what I would see on the SRM-1 when I tested it. 4 x...

Ok so this summarises a few weeks of work which I can share with everyone, long story short I have been pursuing the EDCOR transformers and also pursuing another avenue which is to "team up" 2 Lundahl LL1630PP's to improve low frequency saturation performance. Results seem very good for the...

Im not completely sure but I think the L700mk2 metal bridges can be fitted also? I think you can 3D print also

How you take measurements will also significantly affect readings, here is a new prototype Lundahl LL1630 setup, floating single probe measurement vs grounded. This is at 1KVpp output vs the transformer input. Keeping in mind this is one of my cheap sacrificial amplifiers for testing lol, not...

Most noise is already in your conductor wires and introduced from other devices on the same wire runs back feeding into your house circuits. That is why any self respecting devices have input filters, isolation transformers and power supply regulation… Likewise the wires running up your walls...

A power cable makes no difference lol, let alone on something so low powered… Open your amp up if you want to see the “boutique” normal wiring being used inside your amps or hell rip down your dry wall and check out the exotic wire running through your walls and switch board 🤣

Believe me i dont wish it lol but a lot of reviews keep saying the x9000 sit below them in terms of performance but usual audiophile reviewer BS i guess… ill defer to you having listened to them all as I cannot demo any of them i just thought STAX have always been boutique and high end so they...

I personally think they know the market will “tolerate” an even higher end product price wise with the Warwick, Sennheiser and HIFIman flagships and want to go for that. I personally want them to try and even higher bias like Warwick, not sure if it has anything to it.

Lundahl LL1630PP is basically dead flat from 20Hz to 30Khz, directly driven with no resistors or compensation, up to about 300Vrms where it hits its 20Hz saturation. 400Vrms+ from 30Hz onwards. There is no roll off, in fact it extends well past an OEM STAX amplifier at higher frequencies. I...

The Sansui Alpha series are so dam special, how does the X9000 sound with the loudness button? It really brings out intricate details and bottom end on L700s… I tend to leave mine at mid volume with the LL1630s and just use the DAC. Depending on your inputs you will get very different gain as...

Yeah good to hear, I almost went the bias transformer route as that works also but cost the same in the end due to shipping etc so went down the DC-DC route instead. Both work :) Slew rates seems to be a thing of a bygone era (80s/90s) when the power amplifier wars were over, there was a...

Like I said, hearsay and mudslinging everywhere you look… I can get a Carbon from myheadfi locally way cheaper but then immediately hit with posts that they’re fake, inferior China bla bla. Who is good who is bad, I simply cannot be bothered taking the risk on something like this. Transformer...