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Crack;Bottlehead OTL - Page 310

post #4636 of 6349
I still have for sale matching pair of Kenrad 6SN7/VT231 made in 1944-45 according to eBay seller i bought them from plus adapter and while i had no noise issues i heard nothing special to write about

Sent from my LG-V500 using Tapatalk
post #4637 of 6349
Quote:
Originally Posted by atraf View Post
 

Thank you for this information, I guess that leaves me with the choice between Valhalla and the BH, the Valhalla just seem like the safer way to go DYI wise :\ 

I am looking for something that will really brings out the bass capabilities of the HD650.. I heard them with Naim DAC-V1 it was freaking amazing, only if I was richer :(

 

Since the Naim is a SS do you think it will be hard to find a Tube amp with same sound signature bass wise? 

I'm using 5998 +E80CC Amperex PQ on Crack and Ultron ECC85 6AQ8 on Aune T1- the bass and soundstage is jaw dropping ,it lead me to swapping resistors on Crack so I can get closer to ideal 75v..I would say it's all in the tubes  

 

Quote:

Originally Posted by olegausany View Post

I still have for sale matching pair of Kenrad 6SN7/VT231 made in 1944-45 according to eBay seller i bought them from plus adapter and while i had no noise issues i heard nothing special to write about

Sent from my LG-V500 using Tapatalk

same here ,unlike grey RCA ,black TS bottle 

I prefer pairing  A1834/6AS7G with 6SN7 instead of 5998


Edited by spacequeen7 - 4/12/14 at 5:15pm
post #4638 of 6349
Quote:
Originally Posted by spacequeen7 View Post

Quote:
Originally Posted by atraf View Post
 

Thank you for this information, I guess that leaves me with the choice between Valhalla and the BH, the Valhalla just seem like the safer way to go DYI wise :\ 

I am looking for something that will really brings out the bass capabilities of the HD650.. I heard them with Naim DAC-V1 it was freaking amazing, only if I was richer :(

 

Since the Naim is a SS do you think it will be hard to find a Tube amp with same sound signature bass wise? 

I'm using 5998 +E80CC Amperex PQ on Crack and Ultron ECC85 6AQ8 on Aune T1- the bass and soundstage is jaw dropping ,it lead me to swapping resistors on Crack so I can get closer to ideal 75v..I would say it's all in the tubes  

 

Quote:

Originally Posted by olegausany View Post

I still have for sale matching pair of Kenrad 6SN7/VT231 made in 1944-45 according to eBay seller i bought them from plus adapter and while i had no noise issues i heard nothing special to write about

Sent from my LG-V500 using Tapatalk

same here ,unlike grey RCA ,black TS bottle 

I prefer pairing  A1834/6AS7G with 6SN7 instead of 5998

I have tried my 6SN7 with 5 different tubes , Chatham 5998, famous GEC 6AS7 brown base and Winged C 6H13C for example and non of them i was happy with
post #4639 of 6349

Have anyone seen this tube before? I got it from ebay last night. looks quite rareProcessed By eBay with ImageMagick, z1.1.0. ||B2

post #4640 of 6349
Nice looking tube! What model number?
post #4641 of 6349

It's advertised as Mullard 6as7g but can't fine any details of it

post #4642 of 6349
It certainly looks right. I wonder if Mullard made it or if it's a re-badge.

How does it sound compared to your other 6AS7G?
post #4643 of 6349
Quote:
Originally Posted by Mahdi8 View Post
 

Have anyone seen this tube before? I got it from ebay last night. looks quite rare

 

Well, how does it sound?

post #4644 of 6349
Looks like an RCA rebrand... Is there an octagon on the glass with 6AS7G in it somewhere? Nice looking box too!
Edited by GrindingThud - 4/13/14 at 4:40pm
post #4645 of 6349

Haven't receive it yet Just bought it on ebay last night. should receive it in 2 days or so will update on how it sounds when I receive it

post #4646 of 6349
A rebrand, no question. Made in USA. How much did you pay?
post #4647 of 6349

$23 delivered so it's cheap

post #4648 of 6349

Hello Everyone,

 

Looking for some assistant with my crack right now, appreciate any help.

 

On page 19 of the manual, it said connected the black wire from terminal 4 to terminal 22L and right below it the instruction said connect terminal 4 to terminal 14U.  So, I left terminal 22L open is that a problem?

 

Second problem is the resistance check, most of the terminal value matches up and others left me worry.  Terminals with * value I got OL from my multimeter and on terminal 13 instead of 270K ohms I got OL, so going to resolder that terminal.  But where it said RCA jacks: Center pin, I can't figure out where that is?

 

Thanks for any inputs.

post #4649 of 6349
Quote:
Originally Posted by prtuc2 View Post
 

Hello Everyone,

 

Looking for some assistant with my crack right now, appreciate any help.

 

On page 19 of the manual, it said connected the black wire from terminal 4 to terminal 22L and right below it the instruction said connect terminal 4 to terminal 14U.  So, I left terminal 22L open is that a problem?

 

Second problem is the resistance check, most of the terminal value matches up and others left me worry.  Terminals with * value I got OL from my multimeter and on terminal 13 instead of 270K ohms I got OL, so going to resolder that terminal.  But where it said RCA jacks: Center pin, I can't figure out where that is?

 

Thanks for any inputs.

 

Changing from 14U to 22L is completely fine and will leave 22L open. This should actually lower the noise floor.

 

You should definitely be getting within about 10% for all resistance checks so definitely resolder as you suggest.

 

The centre pin on the RCA is the stalk that sticks out the middle of the back of the RCA terminal. You will have a solder tab at the base of the RCA near the chassis plate and you'll have a hollow stalk sticking out of the middle of the RCA socket. I can send a pic if this doesn't make sense so let me know.

 

Good luck finding the culprit!!

post #4650 of 6349

Can anyone send me the PDF of the Crack manual? I'm helping another Head-Fier get ready for a customised build and need to know the various capacitor locations and sizes.

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