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MicroMara

RF 7 MK II ....The queen is dead, long live the queen

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Phase 2: Now the old sound insulation inside the loudspeaker cabinet has been replaced by a more efficient one. This novel insulation material massively dampens air- and structure-borne sound influences. It is only 0.3937 " thick and has been replaced in a ratio of 1:1 in terms of surface area from the older insulation material.

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Phase 3:  The RF 7 MK II got this massive substructure to completely decouple the speakerbodys from themselfes and the room to optimize the natural resonance behavior.

 

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Phase 4 : Now all coils and copper contacts cleaned by means of a contact cleaning agent ....." The german Wonderfluid "

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Phase 5 : The optical revision of the RF 7 MK II. The front now looks much more elegant .

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Phase 6 : Connection and installation of the new terminal

 

 

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Phase 7 : The production of the loudspeaker cables......

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Phase 8 : Building the external crossover housing

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Audiophile porn you've got there, all on one page.

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3 minutes ago, JohnJ said:

Audiophile porn you've got there, all on one page.

not finished yet.......

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Then the process of finishing the external crossovers which alone took about 3 weeks......

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Then finally the long awaited connection of the external crossover to the system. The complete conversion of the RF 7 MK II took 4 months.......

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and this is what it looks like now in my music room with all the equipmentKlipschCommunitykleiner.thumb.jpg.276479e89e2935ac5241fac3bc83d038.jpg

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18 minutes ago, JohnJ said:

Audiophile porn you've got there, all on one page.

one page is not enough......45.gif

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@Tarheel....thanx for having a look  into my thread ...the most important information are subsumed on Page 12 / 13 and 14 . Just if you want know it looks after having finished the works with the external crossovers .....and having an interest for the measurements that I did after having finished this project. 

 

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3 hours ago, MicroMara said:

@Tarheel....thanx for having a look  into my thread ...the most important information are subsumed on Page 12 / 13 and 14 . Just if you want know it looks after having finished the works with the external crossovers .....and having an interest for the measurements that I did after having finished this project. 

 

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I was really interested in the turn table.  Always a fan but never an owner of Micro Seiki.  You have some nice gear my friend!

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Beautiful equipment indeed, all except for that Norwegian R2R player, Willi Studer is probably rolling over in his grave.😀

 

I'm just kidding,  love Tandberg.

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On 6/6/2020 at 10:57 PM, dwilawyer said:

Beautiful equipment indeed, all except for that Norwegian R2R player, Willi Studer is probably rolling over in his grave.😀

 

I'm just kidding,  love Tandberg.

I have to admit that I've worked with a lot of R2Rs. I even still have the equipment to cut the organic tape at home. I also owned the Revox A / B series / Sony / Akai / and Tascam R2R. Soundwise there were no significant differences. I sold all other R2Rs and kept the Tandberg, because this R2R is ergonomically and optically one of the most beautiful R2Rs ever built.

And I thank you for your compliments regarding my audio gear.  And yes, the complete moddy  of the RF7 MK II series with the external crossovers was an extraordinary project in which I put all my many years of experience from building loudspeakers myself into this project. It is my masterpiece, so to speak.

 

 

Towards the end of this year I  want to buy another tube preamplifier and 2 tube monoblocks. But at the moment I have not made a decision yet. I would be grateful for any advice. The critical impedance curve of the RF 7 MK II series is no longer important, as mine is now in the uncritical range between 4 and 12 ohms.

 

But more important are the acoustical changes in regard to the RF7 MK II serial model. The impulse speed, the jump response of the chassis, the timing and precision and plasticity and depth gradation of the stage, voices, instruments, location, dynamics, fine resolution, coarse dynamics, fine dynamics, precision, spatial resolution, from the brilliance of the high tone ,the midrange expansions, up to the depth gradation of the bass. has improved so much.Mine doesn't have much in common with the serial model anymore. Guess it´s the best sounding RF7 MK II ever build in the world.

 

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Since a year I want them .....today I got them  ........  my queen was crowned as empress

 

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