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Crack;Bottlehead OTL - Page 250

post #3736 of 8079
Quote:
Originally Posted by Loquah View Post
I'm so glad to hear that my old Crack has found itself such a happy home. May it bring you years of enjoyment!!!

 

Which tubes are you liking best?

My Curent Fav's are the GEC 6AS7G + Mullard ECC82. On a recent Crack high, I got carried away :bigsmile_face: & ordered a bunch of tubes from Ebay (listed below). Waiting for them to arrive.

 

Philips Miniwatt 12AU7

Amperex Bugle Boy 12AU7

Brimar 12AU7

Tung-Sol 12AU7 D GTR Black Glass

GE 12AU7

Tung-Sol 12BH7A

RCA 12AU7

CBS-Hytron 12au7

 

 

Western Electric 421A

GEC 6080WA


Edited by punit - 2/14/14 at 1:16pm
post #3737 of 8079

My hardwood walnut crack base is finished. I had to give up on the dovetail corner, but I'm happy with it nonetheless. 

 

post #3738 of 8079
Looking good! I don't know if that bottom is temporary, but you will probably want to leave it open underneath so air can flow through.
post #3739 of 8079

I wood second that, if the base is permanent consider cutting/drilling some vent slots and low level feet so you have some air flow.

 

Its looking good in walnut.


Edited by JamieMcC - 2/15/14 at 12:31am
post #3740 of 8079

I can easily perforate the bottom. I didn't realize that the crack would be drawing air from the bottom. Isn't it designed to sit flat across a table or desk?

post #3741 of 8079
Quote:
Originally Posted by MattTCG View Post
 

I can easily perforate the bottom. I didn't realize that the crack would be drawing air from the bottom. Isn't it designed to sit flat across a table or desk?

 

I had some small self adhesive feet with my bhc kit which would keep the Cracks case about a pencil thickness clear of what ever it sits on.

post #3742 of 8079

Ok. Thanks Jamie. I'll make some adjustments to the bottom. 

post #3743 of 8079

Tried the Western Electric 421A with the Crack today. Just WOW, this is the best sound from the Crack yet, beats the GEC 6AS7G IMHO. Using it with HD 800, The sound is more meaty, mids are more "full" & retains the top end extension & clarity of the GEC. IMHO Its like the best qualities of TS 5998 & GEC 6AS7G combined together


Edited by punit - 2/15/14 at 8:16am
post #3744 of 8079

I have to double check on page 19 of the manual says "Attach and solder one end to the power transformer terminal 4. Attach and solder the other end to terminal 2L" But then it says connect it to 14U instead of 22L yield more quiet operation.

Which is better, 22L or 14U?

Mine is at the moment connected to 14U.

post #3745 of 8079
Quote:
Originally Posted by MattTCG View Post
 

Ok. Thanks Jamie. I'll make some adjustments to the bottom. 

Any type of small feets will do the trick.

post #3746 of 8079
Quote:
Originally Posted by Rem0o View Post
 

Any type of small feets will do the trick.

 

Not in this case. I finished my base with a bottom. So until I remove it or perforate it, the feet won't make any difference. 

post #3747 of 8079
Quote:
Originally Posted by TinFoildHat View Post
 

I have to double check on page 19 of the manual says "Attach and solder one end to the power transformer terminal 4. Attach and solder the other end to terminal 2L" But then it says connect it to 14U instead of 22L yield more quiet operation.

Which is better, 22L or 14U?

Mine is at the moment connected to 14U.

 

I went with 14U and have had no problems.

 

It did have me racking my brains for a moment when it came to checking my build against the pic on page 36 of the manual as it looked like I had a wire missing! But did not take long to trace back to the revision.

post #3748 of 8079
Quote:
Originally Posted by JamieMcC View Post
 

 

I went with 14U and have had no problems.

 

It did have me racking my brains for a moment when it came to checking my build against the pic on page 36 of the manual as it looked like I had a wire missing! But did not take long to trace back to the revision.

14U it's then :) thanks for the quick reply, even though I probably will call it a night now  

post #3749 of 8079

I used 14U too with great results

post #3750 of 8079
Quote:
Originally Posted by TinFoildHat View Post
 

I have to double check on page 19 of the manual says "Attach and solder one end to the power transformer terminal 4. Attach and solder the other end to terminal 2L" But then it says connect it to 14U instead of 22L yield more quiet operation.

Which is better, 22L or 14U?

Mine is at the moment connected to 14U.

 

I had the same question when I built mine ...  14U is the way to go!

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