[davetroy]

This might be the most novice question ever, but how do I replace the volume knob on the front of the TVC? I purchased an ebony knob from Nicholas, and now I'm trying to figure out how to take the old one off and put the new one on.

Thanks,
Dave

[Nels Ferre]

There is a hole in the "side" of the knob that you see when you adjust the volume. Use an Allen wrench to loosen the set screw.

[gooberdude]

hey Rollo or Nick, or anyone really.....   If i wanted to run a ground wire from each of the trannies into, say, the ground lug on my phono preamp, where would I attache the grounding wire to the tranny?   would the metal of the base suffice??

I have no hum or no issues - just wondering.   there's a lone hole in the back plate of mine that wires could be routed through, or just out the top since i'm lidless.  i have a bunch of strands of CAT5 wire that work great to ground both my racks.

Hey Rollo,  you said to cover the trannies with Black Hole pads?   i thought those just went under a tranny to isolate its mounting?   do tell...

matt

[rollo]

There is a hole in the "side" of the knob that you see when you adjust the volume. Use an Allen wrench to loosen the set screw.

 

    Actually there are 2 allen screws for each knob. Tighten first one almost full then check alignment and tighten the second.
     The tour de TVC is well under way.
The stops so far:  1  Nels Ferre'
                         2   F-100
                         3   Tanachiro 58
                         4   Gary

    Hope I did not forget anyone. Nels will compare dual mono to stereo version for upcoming review in Enjoy The Music. All others are required to post their findings on AC and ship TVC to next person in line. There is room for more if interested.

[gooberdude]

forgot something....   if you are installing the new ebony knobs and they don't perfectly slide on the rod do not worry.   both my ebony replacement knobs had to be drilled out just a bit.

install a 1/4" bit on a drill, slide the knob hole onto the bit & manually turn the knob...i didn't turn the drill on.      after 15-20 turns i slid it back on the tvc mount & it was perfect.
might take a little tweaking though to ge the new knobs flush with the face.   the volume knob was much easier.

a 2nd tip, after you install the new knobs come back to it a week later and tighten everything a bit more...if the knobs develop a little play.     when i 1st installed them i tightened the screws down as far as they would go - a week later i easily turned each screw 3-5 rotations more.  the knob action is solid now.

[shep]

Rollo, How in the world did I get on the list???? Not that I'm against but I got no power amp at the moment and live in France. Don't tell me there's another Shep??? My alter-ego...ban his skinny white ass, he's a total pest aa

[rollo]

Gooberdude,

                  Just attach ground wire to screw and nut that holds trannie in place. No the base plate will not be an affective ground. Please attach as recommended in between nut and flange of trannie. The hole is where my ground post is located and looks good as well. The main reason for the grounding is to eliminate hum, however the added weight and bass is a blessing as it was not expected.
      Blackhole pad, Dynamat or ebony damping for the sides and top of the trannie yields an even quieter background resulting in more information.
       Let us know what the ground did for your sound. It is impossible to tell if it is the wire, grounding, elimination of buss connections, elimination of selector switch that is making the difference I am hearing as they were all done at once. The ground is the only item I can test against and it does make a substantial difference to my ears.
       The pad under the trannie is there so the vibration of the plate does not  find its way into the trannie. The padding is to reduce the vibration in the trannie itself.

[rollo]

Rollo, How in the world did I get on the list???? Not that I'm against but I got no power amp at the moment and live in France. Don't tell me there's another Shep??? My alter-ego...ban his skinny white ass, he's a total pest aa

 

Sorry man,
                 My mistake it was someone else. No there is not another Shep

   rollo

[Harmon]

Got my reference dual mono TVC from DHL yesterday.  Sounded clearer and more detailed than my previous diy preamp right out of the box. These are very interesting tweaks you guys are writing about how to quiet down the TVC plus producing better bass.  With my amp(400w into 4ohm) and CDP on but not playing a disc and both volume knobs turned to maximun I have to really strain to hear a very slight hum one inch from my drivers. This thing is super quiet.  May take lid off later after unit burns in a bit.

[rollo]

Harmon,
          Welcome aboard the good ship Promitheus. How many in and outs does your TVC have? What type of music do you listen to?

 rollo

[guest1632]

This might be the most novice question ever, but how do I replace the volume knob on the front of the TVC? I purchased an ebony knob from Nicholas, and now I'm trying to figure out how to take the old one off and put the new one on.

Thanks,
Dave

Hi Dave,

This wil take a small Allenhead driver. There might be 2 of them on the knob. Once you have removed the knob, then put on the Ebony one. Now, if you notice the screwhole for the old knob, when the volume is all the way down will be at 12 o'c. After you align the Ebony screwhole up at 12 o'c, and the allenhead is tighten down, then you can send me your old knob. grin. How that?

Ray

[Harmon]

Harmon,
          Welcome aboard the good ship Promitheus. How many in and outs does your TVC have? What type of music do you listen to?

 rollo

Thanks rollo.  It is the Reference 4 dual mono with two pairs of RCA ins and one pair of XLR in, two pair of RCA outs and one pair of XLR out. I listen to Jazz, i.e Count Basie, the Blues i.e. Patricia Barber, Diana Krall, small classical pieces i.e. Bach Cello Suites etc..

[daz_bike]

Rollo,

Thanks for the dims.  Look forward to further comments as the burn in progresses.


Harmon,

Congrats on the new TVC.  Is your wiring single or double run silver?

Cheers

[guest1632]

Hi Rollo,

So I gathered that you have 2 ins and 2 outs. So coming off the 2 inputs and 2 outputs, could you tell me where they are hooked up. That's on the Plus/hot side. Now, for the ground side. I'd like to get rid of the buses all together. Or did he leave the ground bus?

So just give me a verbal diagram. That will do the trick. Thanks.

Regards,
Ray

[Harmon]

Rollo,

Thanks for the dims.  Look forward to further comments as the burn in progresses.


Harmon,

Congrats on the new TVC.  Is your wiring single or double run silver?

Cheers

I would have to take a look inside but I am not sure what to look for.

[davetroy]

This might be the most novice question ever, but how do I replace the volume knob on the front of the TVC? I purchased an ebony knob from Nicholas, and now I'm trying to figure out how to take the old one off and put the new one on.

Thanks,
Dave

Hi Dave,

This wil take a small Allenhead driver. There might be 2 of them on the knob. Once you have removed the knob, then put on the Ebony one. Now, if you notice the screwhole for the old knob, when the volume is all the way down will be at 12 o'c. After you align the Ebony screwhole up at 12 o'c, and the allenhead is tighten down, then you can send me your old knob. grin. How that?

Ray

Actually, minimum volume for me is at six o'clock. Or maybe I just thought it was (six o'clock and 12 o'clock being the same depending on where the screwhole is). So I kept it at six o'clock. I imagine it doesn't matter.

By the way, the wires in my TVC do not touch the bottom plate.  They're just slightly above it, as Nicholas says they should be.

[Whitese]

Well fellow Promethians...

I sold mine as I had to sell my amps and other stuff...I am simplifying life for a few months.  Have fun with the pre's and tweaks, and keep nick afloat and thriving..i am super glad I had his pre, as it made my ex-Bel Canto's sound like no pre could.

this is my current setup:

[rollo]

Ray,
        The TVC has one input and two outputs. He left the buss for the negative. However that is going to be eliminated.
 
        Ray the return run from the buss is connected to the first terminal just right of the nut that holds the attenuator together [top right]. The buss is connected to both input and output negative legs. I feel the returns should be separated from each other. So you will require a wire for each return. I believe the individual wires all get connected to this terminal described above, however I am not sure if there are additional taps for each return or they are gang soldered to the one terminal.
        I requested additional wire and a clarification from Nicholas. I am awaiting a response. Will let you know as soon as I know. I am pretty sure its the one terminal but I want to make sure.

  rollo
P.S.  Harmon I am a big jazz fan myself. Ray Brown is in the House right now with Gene Harris. Red Hot Trio.

[Harmon]

Have my reference dual mono TVC for about 48 hours and burning it in using a technique Gooberdude told me about. My TVC is really sounding sweet and imaging is excellent. On some CD's the intruments go beyond speakers boundaries.
Let me run this by you guys. If I connect the screws holding each trannie to the chassis with two wires  and run the wires out the little whole already provided in the back of the unit and attach the wires to a screw on the aluminum chassis of my amp which resides below the TVC will this provide sufficient grounding. Thanks

[rollo]

Whitese,

            Looking good man. Vintage you say eh! Is that EL 84 based?

    Happy Listening

   rollo