Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Crack;Bottlehead OTL
New Posts  All Forums:Forum Nav:

Crack;Bottlehead OTL - Page 170

post #2536 of 5836
Quote:
Originally Posted by palmfish View Post

I love it!

Thanks, Palmfish. So do I. It has been a true labor of love. My very own Frankenbride!
post #2537 of 5836

amcananey, it won't be long before your Crack takes flight.

post #2538 of 5836
Code:
Quote:
Originally Posted by amcananey View Post

Thanks, Palmfish. So do I. It has been a true labor of love. My very own Frankenbride!

It has a face only a mother could love! But I can relate to how proud and pleased you surely feel.

I have been enjoying my Crack for more than a week now and I really can't imagine improving it over stock. It just makes my HD800 sound so good. Can you, if possible, describe how your Crack progressively changed, sound wise, as you progressed? Im curious because I really am happy and have no real desire to upgrade or modify mine at all, but of course I am ever curious.
post #2539 of 5836

Any of you guys have good tips on wood finish/varnish?  I'm hoping to get my BH crack lookin slick and shiny as glass =p

post #2540 of 5836
Quote:
Originally Posted by palmfish View Post

Code:
It has a face only a mother could love! But I can relate to how proud and pleased you surely feel.

I have been enjoying my Crack for more than a week now and I really can't imagine improving it over stock. It just makes my HD800 sound so good. Can you, if possible, describe how your Crack progressively changed, sound wise, as you progressed? Im curious because I really am happy and have no real desire to upgrade or modify mine at all, but of course I am ever curious.

 

Palmfish, in addition to Adam's awesome hardware mods, I can highly recommend tube changes to get dramatically good improvements from the already excellent stock sound. I am completely blown away by the difference made by the GEC 6AS7 straight brown base and RCA 12AU7 cleartop. All up it's about a $200 upgrade and involves no time or soldering, but turns the Crack into an absolute killer (even without the Speedball!)

 

Not saying you shouldn't follow in Adam's crazy footsteps as well though - I know I plan too! tongue_smile.gif

 

Quote:
Originally Posted by GaryPham View Post

Any of you guys have good tips on wood finish/varnish?  I'm hoping to get my BH crack lookin slick and shiny as glass =p

 

I am really happy with my Japan Black stain and then used a quality satin varnish (but you would want gloss for the glassy look). The best tips I learned are to smooth the finish with a super fine sand paper prior to each layer of varnish and keep the varnish thin (i.e. don't lather it on because you'll get an uneven surface).

 

Some stain ideas I got from the Bottlehead forum threads involved staining and sanding to create an aged / uneven effect. Here are some shots of my process.

 

 

 

 

 

I got lazy at the end and the finish shows some signs of brush strokes if you look closely, but it sounds too good and I don't want to take it away from my desk for further work!

post #2541 of 5836
$200 tubes in my $200 amp isn't gonna happen...lol
post #2542 of 5836

Your loss!
 

post #2543 of 5836
Quote:
Originally Posted by palmfish View Post

$200 tubes in my $200 amp isn't gonna happen...lol

 

Fair point. I thought you were considering spending money on caps, etc. which will soon add up to similar figures.

 

On the tube front, you can also get good improvements for less.

 

My favourite combo before getting the GEC was a Mullard 6080WA and the RCA 12AU7 Cleartop. I paid just $37.50 plus postage for the 2 tubes and it's a significant improvement IMO.

post #2544 of 5836
Loquah,

Although I show a Mullard 12AU7 in the pictures, I'm actually using the GEC 6AS7G (straight brown bass) with an RCA 12AU7 clear top right now (thanks, W0lfd0g!). I think this is probably the best combo I've heard with my Crack. I still need to do more testing to confirm, but it is interesting to hear you like this combo, too.

A much cheaper alternative to the GEC is the Bendix 6080 with solid graphite plates. I haven't used it since I got my two GECs, but I might even like that better than the Tung-Sol 5998s.

Best regards,
Adam
post #2545 of 5836

I agree, Adam.

 

Bendix 6080WB with graphite plates + RCA clear top 12au7a = Very nice combination

post #2546 of 5836
Everything Ive read from experienced owners says to install the Speedball first for the biggest improvement.
post #2547 of 5836
I agree. I've been one of the most vocal advocates of doing just that.
post #2548 of 5836
In terms of how my Crack has changed: 1. Installing the Speedball make my Crack quieter and seemed to improve resolution. 2. Installing the ClarityCap ESA 100uf coupling caps seemed to do the same thing, although I have to admit that there was a week between when I started installing the caps, and when I had them in and working, so I couldn't really do an A/B comparison, so I can't really speak to the nature of all of the changes. 3. Installing a film bypass cap on the last electrolytic cap in the power supply didn't seem to make a noticeable difference. 4. Using Harrison Labs inline RCA attenuators helped give me more room on the volume pot, and seemed to slightly tame the treble, although the bit about the treble might be imagined, since I found the attenuators to really be quite neutral. It may just be that because volume ramps up more gradually with the attenuators, I don't wind up overshooting the mark as much. 5. The GEC 6AS7G made my Crack quieter still. (I just got lucky, I'm not claiming this is a trait of all GEC 6AS7Gs, nor am I claiming that other tubes can't be just as quiet) 6. I wouldn't swear that installing the TKD had much of an audible effect at all. 7. Replacing the electrolytic caps in the power supply made a very noticeable difference in terms of bass extension, slam and tightness, and possibly increased overall resolution.
post #2549 of 5836
I apologize that my previous post turned into a solid block of text without formatting, but there is some glitch in our computer system at work that causes this...
post #2550 of 5836
What did you use for power supply caps?
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Crack;Bottlehead OTL