[guest1632]

Hey ... good idea Ray

I'll tighten the nuts.
I did find an RA nut that was loose the other day but did not think
of tightening the rest.

Cheers mate
Jag

Hi Jag,

What 5687 preamp are you getting? You know you could get the one from Nick which uses a 6N1P. I think he sells it for $500 or so. Worth a look see on his site.

Ray

[aod]

'Ello
Nick-san is doing a custom 5687 pre for me
 
Jag

[guest1632]

'Ello
Nick-san is doing a custom 5687 pre for me
 
Jag

Hi Jag,

cool! So why did you pick the 5687 versus his 6n1p?

Ray

[aod]

High Ray
I'm using JBL active monitors with Titanium tweeters. These tweeters are  a bit bright and I don't need to accentuate that any more. I do need richer mids and bass slam is not-compromise-able.

Thus the 5687. Only problem I fear may be the microphonics as these tubes have a reputation for that. I might use Herbies tube dampers to help out there if needed.

The JBL 6328's really slam, and add to that the 6312SP sub, WHOA NELLIE!. Just what the doctor ordered.

[guest1632]

Hi Jag,

Not being familiar with the character of each of these two tubes, would the 6N1P be brighter than the 5687 tube?

Ray
High Ray
I'm using JBL active monitors with Titanium tweeters. These tweeters are  a bit bright and I don't need to accentuate that any more. I do need richer mids and bass slam is not-compromise-able.

Thus the 5687. Only problem I fear may be the microphonics as these tubes have a reputation for that. I might use Herbies tube dampers to help out there if needed.

The JBL 6328's really slam, and add to that the 6312SP sub, WHOA NELLIE!. Just what the doctor ordered.

[aod]

Hello Ray

As a responsible manufacturer, Nick has used tubes that are in production. The 5687 is not a current production tube

Both are good tubes but I guess the 6N1P was chosen by herr-Nick so that the strengths of the TVC would not be masked by the tube. The 6N1P is also a general all rounder.

For my case, I need the 5687 to tame my speakers  :icon_twisted:but ... the tube is quite microphonic.  :oSo, I have to go an extra step to help contol this, ie teflon sockets and qite likely, Herbies tube dampers. I might even have a protetion case around the tubes if I can't control the vibes.

regds
Jag

[guest1632]

Hi Jag,

It's a small ....

Nick tells me to put the Promi in front of the pre but then I would just lower the gain of the phono according to me. So I wonder if I could put the Promi between the pre and the power amp if necessary at all. Maybe that would give too high a voltage to the Promi. We'll see.

Shame on you giving up on the Allaerts, why?

Sorry it didn't work out with the Tannoy DMT's but it turned out to be too expensive to ship them to Singapore.

Still using the Living Voice?

Cheers,

Jos

ps. What on earth is Tad?

Hi Jos,

Gees, haven't we met somewhere before in a previous life? just kidding.

Hey Nick is correct. Put your pree so it is strictly as a buffer. Hook all your gear up to the TVC, and let it act as your volume control. Yeah, I'd hook it up and turn the TVC down to the second volume notch. Then adjust your volume on your pree, with music playing so that what you hear out of the speakers is just loud enough to hear. Now that just a rough guide. Then you'd control the volume with the TVC accordingly. Try that out.

Ray

[guest1632]

Ray, I replaced an Electronic Visionary Systems PB2SA that I had been using for over a decade. This is a dual mono stepped attenuator with 36 hand matched resistors/channel and star grounding. State of the art way back then. TVC blew it away for keeps. Putting it back in now makes me wish I had gone for the transformer setup a long time ago. There is a mechanical quality to the sound that, once I have heard it, I cannot overlook. Funny how that works. Like that tiny dent in your car: your eye goes right to it every time you walk past.TVC is like paintless dent removal for me Thanks again for the summary of your tweaking. Going into the hospital for knee replacement fri. Will have lots of time for tinkering during recovery.  Gerry

Hi Gerry,

I sure wish you the best in that knee replacement. Hope all goes well, with no complications at all.

Ray

Hi Gerry,

Let me correct something. Wehn you put the Black Hole Padding on the transformers, put a piece each on the top, and the two sides of the transformer's  U shape frame. Then if you get brave, you can put the BHP on the bottom of the transformer itself.

Ray

[Gaara]

Assuming you can get it.  Anyone else try to order some Black Hole Pad recently?

I order June 19th...still apparently out of stock.

[guest1632]

Assuming you can get it.  Anyone else try to order some Black Hole Pad recently?

I order June 19th...still apparently out of stock.

Hi Gaara,

I have a sheet sitting here. I can precut you some enough for all four sides of each transformer. PM me your address, and I'll see what I can do for you. Hey, someone helped me out, so I am just paying it forward. Glad to do it.

The 6.25 by 22, 2 strips one on the top underside and one on the bottom in between the two transformers, don't know I have enough for you there. But covering the frames of the trafos and especially underside, will go a long way to make this baby sing.

Ray Bronk

[Whitese]

i guess heat is not a consideration on these trannies....if they submerge them in tar in potted trannies, we can use dynamat kind of stuff without the worry..?

[gooberdude]

no heat whatsoever with these trannies...


i've used Black Hole Pad inside my TVC and recomend it for all TVC users.   I've used BHP in other areas, along with Dynamat.


Do NOT use Dynamat if possible...it deadens too much with too little of the product.   BHP seems to be quite pleasing, and not as easy to overdampen.


I have stuck BHP on my plate amps huge trannie, it gets hot but the BHP stays put.

[Whitese]

i better stop typing after 22:00hrs...i cant believe I compared an output tranny and its heat to the TVC's that deals in mV's...just tuck me in and say goodnite...

forget dynamat, i will try what you guys are using!

[gooberdude]

sleep tight!


Dynamat is excellent for damping metal in cars....it was designed to do this.     It can do harm once in the home, and in the hands of a 'phile tweaker though.      its real strong, muy fuerte en espanol.


as far as i know, there's no other audio specific material like BHP avail...is there????   damping material designed for trannies???

[guest1632]

sleep tight!


Dynamat is excellent for damping metal in cars....it was designed to do this.     It can do harm once in the home, and in the hands of a 'phile tweaker though.      its real strong, muy fuerte en espanol.


as far as i know, there's no other audio specific material like BHP avail...is there????   damping material designed for trannies???

Hi, Black Hole Pad is actually for deadening speaker cabinets.

Ray

[dgotlse]

As  a happy owner of a Double Box Promi, I'd like to damp it with some BHP but Speaker City p&p costs for France are 29,99 $.

It doesn't make any sense to pay such an amount for a 7 $ order. Should somenone have an extra sheet of BHP to sell and ship at a sensible price, please pm me.

[andrejko]

gooberdude,

unfortunately BHP doesn't seem to be an option for us who live in Europe. Dynamat on the contrary is largely available. Did you perform any direct comparisons BHP vs Dynamat? Could you please clarify why BHP is in your opinion superior to Dynamat?

It could be also very useful for us novice tweakers if someone posted a pic of the TVC interior with damped trannies...

thanx for any feed-back.

[gooberdude]

BHP is a MUCH better damping material for home audio....dynamat should only be used on metal inside your car.


i've used both to damp my Lovan rack, to damp speaker baskets and other assorted tweaking.   With only a small amount of Dynamat you can overdampen things REAL quick.


Any idea how much it would cost to ship to you??   i have 2 entire sheets, really only need 1.    i'd be willing to part with some or all of it for the right price....      BHP is cheap, its the shipping that jacks up the price.

from what i've read, BHP was designed to damp audio transformers.   

Dynamat is like putting a strangle hold on items.    However, it simply rocks when applied to my car's doors and rear deck.



matt

[Whitese]

yeah, I have my car doors and trunk lid lined with dynamat,,,,its like closing the doors of a Mercedez now....

[guest1632]

BHP is a MUCH better damping material for home audio....dynamat should only be used on metal inside your car.


i've used both to damp my Lovan rack, to damp speaker baskets and other assorted tweaking.   With only a small amount of Dynamat you can overdampen things REAL quick.


Any idea how much it would cost to ship to you??   i have 2 entire sheets, really only need 1.    i'd be willing to part with some or all of it for the right price....      BHP is cheap, its the shipping that jacks up the price.

from what i've read, BHP was designed to damp audio transformers.   

Dynamat is like putting a strangle hold on items.    However, it simply rocks when applied to my car's doors and rear deck.



matt

Hey Matt,

I'll betcha we could use the dynamat on the TVC, but in a sparing amount. Having no experience with it, would be hard to tell how much to use. Now, if you used the 6.25 by 2 on both sheets of steel, that just might be the ticket to dampen the steel plates. The BHP does dampen them but not a lot. It would be nice to rap on those plates and hear nothing, but a dull thud.

BHP might have been for trafos, but my first encounter was for use in controlling resonances in speaker cabinets.

I suspect the dynamat like the BHP is not only killing/dampening the TVC, but it would be also taking care of any vibrational stuff that would hit the TVC. That 2.5 by 1 under the trafos made a big difference in subtle details. Then adding the Grover cables, oh yeah baby. Next best things to having a tube preamp. Now if you have them as 3 by 1, underneath each trafo, you loose some detail, and the mids come to far forward. I'm using the screws which tighten down the trafos up against the BHP.All I know that it works.

Ray