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i found first "official" notes about RKV mark 3


milma

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I actually like AudioValve, and miss my Mk II, so any serious criticism of the layout would be appreciated.

 

English isn't their strong suit.

 

Not that I'm in the market.

 

Oooh, a phono section.

 

What's a headphone protector?

 

Damnit, now I want one.

 

Roger (the "R" in RKV) has done his job!

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  • 4 weeks later...

Here are the specs

hinten.jpg

Seems to be a pre-amp as well as a headphone/speaker amp! Probably hellish expensive too!!!

 
"Also in RKV Mark 3 is a fully automatic biasing servo controller to use. In our new approach we have chosen a OPA134."
 

FEARTURES:

  • consequence double mono design
  • 2 * 0,15mm copper for top and bottom layer 
  • multi VIA layer grounding basis,  pcb design is based on the theoretical principles of the "kelvin - wiring"
  • heavy 3 mm laser cuted steel case - couted
  • clipping indicator ( show you faulty tube or overload )
  • 8 power tubes  ( 4 per channel ) - PCL805
  • full automatic DC / AC servo biasing
  • multi match transfomers ( PIKATRON ) included
  • power output mode selector - OTL / match - transfomers
  • ALPS volume control
  • BALANCE pot. +/- 3dB
     -
  • 2 * NEUTRIK output combi headphone jackets - 6,3mm & XLR
  • 5 * inputs; 2 * RCA & XLR; 2 * RCA only; 1* RCA phono MM out 
  • 1 * RCA - REC output, offer all connected soures and PHONO too for sec. line ( pre ) amps
  • 1 * pair XLR jackets for "power out" for power amps ( OTL output ratio: 10:1 )
  • 4 * isolated heavy gold plated stereo speaker terminals 
     -
  • green illuminated main power switch for power ON mode
  • heating and plate voltage "soft start" circuit
  • headphone protector circuit
  • reversible heating / plate current limiter
  • installed OPA 134
  • highly accurate implementated stereo MM phono modul - "old school design"
     

OPTIONS:

1 - case color: standard - black or silver - 
2 - "limited EDITION ivory white colored case" - hand selected parts < 1% tolerances and a lot of more expensive specails

 

linie.jpg

 BASIC SPECS:

  • power consumption: 120 watt
  • weight: 10 kg
  • size: 400*340*150mm

SPECS: OTL mode:

  • power output:  5,8 watt - 220 ohm load - ( 1% THD )
  • max. output voltage 100 VAC / 2kohms load
  • bandwide: 10 - 150.000 hz ( 100 ohms )
  • Ri: 0.01 ohm
  • THD:  configure - LM 351 - 3V - 1 kHz
  •      100 ohm load 0,014%
  • THD:  configure - LM 351 - 3V - 10 kHz
  •      100 ohm load 0,014%
    .........................................................................
  • THD:  configure - OPA134  - 3V - 1 kHz
  •      100 ohm load 0,008%
  • THD:  configure - OPA134  - 1V - 10 kHz
  •      100 ohm load 0,018%
     
  • Gain: 23 dB
  • s/n - ratio: 100 dB

linie.jpg

SPECS: match - transformer mode: ( impedancer )

  • THD:  configure - OPA134 / 1 kHz / 8 ohm load
    0.1 VAC - 0.015%
    0.3 VAC - 0.015%
    0.6 VAC - 0.02%
    1.5 VAC - 0.1%
    3.0 VAC - 0.3%
  • all other higher impedances have a more and more lower THD
  • match transformer supported impedances: 8 > 16 > 32 > 64 > 128 ohms load

linie.jpg

SPECS:  MM phono - section:

output impedance: 450 ohm
input impedance: 47 kOhm
RIAA accuracy: (Referenz - 0,000dB - 1Khz: 
100Hz - 0,07dB     
10.000Hz - 0,04dB
20.000Hz - 0,02dB
30.000Hz - 0,02dB 
noise: -74dB
distortion: 0,015% ( 1V rms output signal )
gain: 46dB

Edited by complin
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