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In the Forum: Horn-Loaded Speakers
In the Thread: RAAL “Water Drop” tweeter for Macondo.
Post Subject: I got, I got, I got it!!!!!Posted by Romy the Cat on: 6/20/2009
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I got it!

I realty have got it this time and it is exactly what I was craving for and shooting for. I converted both channels for 18db/octave on tweeter and recalibrated the whole Macondo, in a slightly different manner this time. After I finished the recalibration this afternoon I got the sound that I literally heard in my dreams – the upper MF are think and saturated but at the same time they are different with each touch of sting, with each blow of winds or with each soprano note. That was so interesting and play and SO INTERESTING to fine-tune the injection amount, the  MF attenuation, the HF attention, the type of the MF tube  and the current of HF tube that was completely caught up into this and had so much enjoyment the I even canceled my female engagement tonight. The result I got incitingly wonderful and I truly, truly pound of it.

The RAAL’s Alex asked me to let him know where I lend with my Water Drop application. This morning I spoke with him and listening my feedback about the positive result I got with 3rd order he advised to go 4th order. I see a lot of rational in following his advise but honestly it is so good that I would like do not spoil it for now.

The configuration I end up is following: the MF runs at minus 1.75dB and using type 45 tube. Other tubes do well as well but among the tubes that I own only 45 runs “straight”. The tweeter runs at 25mA and at 4dB down with 9kHz on left and 10kHz on right. (I know it is stupid but I did not decide yet where to lend in term of crossover point). The Injection runs at incredibly high level – minus 10.5dB. I never was able to have such a high level of injection but the transient from semi-idle Vitavox S2 and Water Drop looks like hold the vertical offset of Sound to the Injection channel. The result is very very sexy – it is fast and super clean but it is tonally rich to a psychotic madness. Where is my Bruckner with those colors?

Now, the only think that I feel might be left is to push the MF driver a bit higher, not more transient and not more idle via a transformer but high higher. I am planning to get read the wirewound attenuator from the transformer’s secondary. The wirewound LPAD has two coils in path, each of them is a series inductance that I do not need as it acts as low path filter.  I have spoke with right people to build a .5dB stepped attenuator with non-inductive resistors…

Ok, this game is over with VERY encouraging results. I am off to my Bruckner and then will be inflating my date tonight…

The Cat

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