Romy the Cat wrote:

... let to have an attenuator that would moderate output impedance let say from 5R to minis 1R.

zanon, our posts 'crossed'...

Mani.

manisandher wrote:

Thanks for taking the time to share your thoughts - I really appreciate this. I'm trying to understand your idea of Severe Mass Deficiency Syndrome. How tightly correlated is this to a speaker's impedance curve? The Druids don't seem to dip below 8R anywhere...

When I said that Volume included a port it was what I meant – the speaker's impedance is included into the Volume Reactance.

manisandher wrote:

1. According to its manual, the Siegfried is a zero-feedback design and has a typical output impedance of 1.5R (measured at 1 amp, 60 Hz). Is this then close enough to your estimated 1.25-1.3R for this attenuator to be unnecessary?

You think about absolute number but I think about relevant number. The point is that your amp might have 1.5R but what if you need 1.42R? What option you have: to change transformer ratio? to change plate current? It all will change the impedance right along with TTH characteristic. How about if you need 6.1R or .04 R You will not be able to get those numbers with change of loading without a severs change of sound.

manisandher wrote:

If you still feel that it might be a worthwhile endeavour, what do you think is the best way of fine-tuning the output impedance precisely? Apologies in advance if there is an obvious answer to this. (BTW, I share your aversion to soldering irons - is there any way that this could be avoided?)

I do not know, I am not an amplifier designer. Running global voltage negative feedback would drive impedance down to a degree and it is possible to design an amp that would be operating more or less stable and identical with different depth of feedback. If you ask me: If is worth it then I would say “no”. In the best case you still will have the best Druids bass. Does the Druids best bass worth build/modify an amp to drive it? I do not think so. It is much more cost per action beneficial would be to get a separate LF section and do not push the last drops from those poor Druids.

Paul S wrote:

Don't worry about selling stuff you "don't like".  To another Moron® it might be the Legendary Stuff of Dreams.  Be honest about what it is; simply hold your current opinion.

I am not so impressed bout BD Design speakers. I truly hated the BMS drivers that they use and I truly hate the network of the blabbering cretins that BD Design built around itself. Any single critical mentioning of BD Design lead to a sudden showing up an army of “BD Design enthusiasts” who begin to run all over you with their idiotic drooling about BD Design. Of course I do not state that BD Design owner is idiot but I have seen quite many very specific idiots and the all have a common denominator – the PRIDE of ownership of BD Design. Ironically I do not think that the guy who own BD Design is a fool and I think that he knows the true values of this idiotic followers. However, he is in the business and those Audio- Morons are his commodities - so, he shepherd those stupid sheep….

Post how do you find the sound “Swing”.  I do not know what those industry whores do nowadays with auditions. Here in US I know distributors of very popular loudspeakers who permit an addition only under defined condition that no negative comments will be expressed publicly. Furthermore I know distributors/dealers who extend additional 10% discount if after the buy the new owner post glorious feedback about the product at the specific sites. I know the distributors/dealers who give extras 10% -15% if you agree to keep the bought model until the nest model get introduced. I mean: this is how the dirt build the “public opinion” noondays…

Anyhow, it is good that you let the Druids to go – they were dead loudspeakers. I have a local audio guy who is straggling with Druids, even though the loudspeakers is not the problem of his but he intend do not change loudspeakers for years to come.  I was looking at his frustrations with Druids and I suggested him to let them go until the hype is up.  I pitched to him Dunlavy CS-III or Altec 19 as the compromised for the same price. Neither Dunlavy nor Altec are awfully good themselves but in compact package and for $1.5K they are fine monitors – much better then the contemporary crap with the price tag of 20x-50x time more. In fact if I were not as stupid as I was then instead of stating my MiniMe project I better got the Dunlavy III, perhaps put in there so other drivers and it would be it… The Cat

zanon wrote:

I'm also not surprised that your new buyer thought your SL600s were too bright. Druids have very rolled off HF.