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Crack;Bottlehead OTL - Page 218

post #3256 of 6337
Quote:
Originally Posted by diaBoliQu3 View Post
 

Guys, before I decide to get Crack or not I want to ask few questions.

- What is the sound for HD600+ Crack? Warm, neutral, bright? I read in review that Crack is neutral and fast. After spending times with warm amp and thick sound amp, I love warm, and fast sound. I afraid that the highs will be ear piercing in neutral amp, or perhaps Crack get them in control?

- Should I get the speedball or not for HD600? How much sound improvement from basic kit to speeball?

- What DAC recommended with crack and HD600, price wise about $300 and below. The cheaper the better.

 

Currently my alternative is LF 336C due to:
- Warm sound. But the downside is this amp more relax compared to Crack and I listened to heavy metal etc too.

- Easier to obtained and less hassle.

 

 

I'm open to other solid state amp for HD600 too within the same prize. Currently my DAC is Aune T1, upgrade in consideration. All my consideration done without listening to the mention amp. So, forgive me for my silly question. I just want to avoid too much upgradetitis.

 

The Crack is warm and not at all harsh. Not with the stock tubes atleast. Tube rolling can make some difference to the sound ( e.g. the RCA 12au7 cleartops were too bright for me. The Mullards are my favourite 12au7 tubes ). For warm and fast sound sound the stock 6080 tube is perfect and dead quiet.

 

 


Edited by mullardpassion - 11/18/13 at 10:18pm
post #3257 of 6337

I haven't found the HD-600's to be harsh up top, I wouldn't worry about that.  I would certainly get the Speedball - you get reduced distortion without the negatives generally implemented to obtain this result (primarily feedback). 

post #3258 of 6337
Quote:
Originally Posted by mullardpassion View Post
 

 

The Crack is warm and not at all harsh. Not with the stock tubes atleast. Tube rolling can make some difference to the sound ( e.g. the RCA 12au7 cleartops were too bright for me. The Mullards are my favourite 12au7 tubes ). For warm and fast sound sound the stock 6080 tube is perfect and dead quiet.

 

 


So, even with stock tube, Crack doesn't sound thin and not so harsh, but still energetic, should be good enough. Is that what you meant?

post #3259 of 6337
Quote:
Originally Posted by diaBoliQu3 View Post
 


So, even with stock tube, Crack doesn't sound thin and not so harsh, but still energetic, should be good enough. Is that what you meant?

 

Exactly. If you want a warmer and more relaxed sound you can still get some cheap RCA 6AS7G ( around $20). It is musical and looks cool too. Gray or black plates, they both sounded the same to me. If you are on a tight budget, you can always get the Speedball later

post #3260 of 6337
Quote:
Originally Posted by mullardpassion View Post
 

 

Exactly. If you want a warmer and more relaxed sound you can still get some cheap RCA 6AS7G ( around $20). It is musical and looks cool too. Gray or black plates, they both sounded the same to me. If you are on a tight budget, you can always get the Speedball later

I think I can squeeze some juice for speedball along the base kit. But is it really gonna improve the sound for HD600 when compared to stock kit? I don't have plan to get another headphone after this.

post #3261 of 6337
Quote:
Originally Posted by diaBoliQu3 View Post
 

I think I can squeeze some juice for speedball along the base kit. But is it really gonna improve the sound for HD600 when compared to stock kit? I don't have plan to get another headphone after this.


It is a definite improvement, though I think you'd appreciate a Speedballed Crack even more after you get used to the stock Crack.

post #3262 of 6337

The Crack ships with old stock "lottery" tubes.  There is no stock tube complement. 

post #3263 of 6337
Quote:
Originally Posted by audiowize View Post
 

The Crack ships with old stock "lottery" tubes.  There is no stock tube complement. 

So, random tube for different people?

post #3264 of 6337
Quote:
Originally Posted by diaBoliQu3 View Post
 

So, random tube for different people?

 

Yes, but they're all 6080 variants as far as I know. (Somebody correct me if the lottery also includes basic 6AS7s, etc.)

 

In terms of DAC, I would stick with the Aune T1. I know that DAC quite well and I don't think you'll get anything significantly better for <$300. Alternatives, yes, but nothing clearly better.

 

Agree with others that the Crack is warm, but tight and fast - not bright at all unless you choose a bright tube like the Cleartop, but even then it's still a warm amp in the scheme of things. If you like heavy metal, etc. and need speed, the Speedball is a really good idea because it tightens everything up, particularly in the bass, but doesn't add brightness, just cleaner, tighter sound.

post #3265 of 6337

Guys, paint the bell only, not the power transformer right? And bell referring to the transformer "cover"/ "caps"? Can the bell paint after the assemble, or before?

post #3266 of 6337

You can paint both the bell end and the transformer lam stack. Paint them before. You can do it either way, but it's easier to simply paint them before installation than masking them off to paint them after you have installed them. Just give the paint some time to harden before you get too manly on them with the hand tools.

post #3267 of 6337

Doc, will the transformer get rusty? Any paint should be safe right?

post #3268 of 6337

The transformer itself is impregnated with varnish and won't rust. The bell end can get rusty in humid environments if not coated with something, be it an occasional coat of paste wax or a spray of clear coat or paint. Be sure to clean the bell end well to remove the oily coating it comes with before you try painting it. Oil base paint will usually go on easier than a water base paint.

post #3269 of 6337

I have a (probably stupid) question.

 

I am building the Speedball for my Crack and I am on page 17 of the manual where it says to:

 

( ) Install an MJE350 in the Q2 position as shown, with the
metalic face of the transistor facing the center of the PC
board.

 

My transistors like this:

 

 

 

No sliver side...  I assume the unmarked side would the 'silver' side?

 

Thank you kindly!

post #3270 of 6337
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