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Crack;Bottlehead OTL - Page 314

post #4696 of 5887

I'am thinking of this amp to be my first DIY Tube Amp.

How does this amp perform with AKG Q70!?

Can you roll 6SN7 tubes with this Amp?Thank you!

post #4697 of 5887
This amp is not designed for headphones with impedence as low as the AKG Q/K70x.

It can be used with 6SN7 tubes either thriugh modding or use of a tube converter. Use of a converter is less than optimal in my experience as it adds noise to tbe signal.

Cheers

Nathan
post #4698 of 5887
Quote:
Originally Posted by MoatsArt View Post

This amp is not designed for headphones with impedence as low as the AKG Q/K70x.

It can be used with 6SN7 tubes either thriugh modding or use of a tube converter. Use of a converter is less than optimal in my experience as it adds noise to tbe signal.

Cheers

Nathan

Thank You!

Did you used a external Power Supply?

Noise is used to be my problem when rolling 6SN7 to my L? MK 3 until i used a DC external power supply and connect the  chassis ground to the external power supply chassis then the noise disapeared the amp is dead queit now i hope this will work with Crack.

post #4699 of 5887
Quote:
Originally Posted by Doc B. View Post
 

Any enclosure would still need cooling slots or holes that would allow dust in. Cleaning out any audio gear every few years is a very good idea. You should have seen the dust buildup on the insides of some of the 60 year old antique radios I have restored. Scary.

Not knowing much about electronics, other than building computers, would a small computer fan fitted be possible to help cool? 

post #4700 of 5887
Quote:
Originally Posted by ModestMeowth View Post
 

Not knowing much about electronics, other than building computers, would a small computer fan fitted be possible to help cool? 

IMO, a vent is a better solution because fans can often introduce unwanted noise into your listening environment.  That's why you typically don't see fans on home-stereo equipment (although I do have some monstrous fans on my PA amplifiers).

 

Just my 2 cents.  Good luck with whatever route you choose :bigsmile_face:


Edited by dsound - 4/19/14 at 8:04pm
post #4701 of 5887
Quote:
Originally Posted by MoatsArt View Post

This amp is not designed for headphones with impedence as low as the AKG Q/K70x.

It can be used with 6SN7 tubes either thriugh modding or use of a tube converter. Use of a converter is less than optimal in my experience as it adds noise to tbe signal.

Cheers

Nathan

 

Hi, indeed. The amp has an output impedance of 150 Ohms. I usually listen to my T90 (250 Ohm) on them (have the crack on loan from punit). Today I thought, let's try some low impedance headphones and see what happens. And I am quite surprised.

 

Next to no noise and pretty clear sounding on a Momentum Over Ear (18 Ohms !!) - duh? I never thought this would work but I actually like the result a lot. Very surprising....

 

Cheers,

K

post #4702 of 5887
That's my old Crack!! smily_headphones1.gif

Strangely, I have a friend who loves the low impedance TH-900s with the Crack.
post #4703 of 5887
Quote:
Originally Posted by Loquah View Post

That's my old Crack!! smily_headphones1.gif

Strangely, I have a friend who loves the low impedance TH-900s with the Crack.


Yes, I always share my drugs with my friends :D. Does your friend have another good amp for the TH-900 comparison ? They do not sound bad with the Crack but when you play the TH900 from a better suited amp (Meier Classic & WA22 in my case) you know what you are missing, especially at higher volumes.

post #4704 of 5887
Quote:
Originally Posted by Loquah View Post

That's my old Crack!! smily_headphones1.gif

Strangely, I have a friend who loves the low impedance TH-900s with the Crack.

 

You old Crack says: Hi!

 

I hope I can convince @punit to sell this beauty to me one day. I tried to distract him with loaning him some of my headphones, let's see if this diverting tactic works out :atsmile:

post #4705 of 5887
He has a Soloist, but prefers them with Crack. Maybe he should try my Mainline...
post #4706 of 5887
Quote:
Originally Posted by Loquah View Post

He has a Soloist, but prefers them with Crack. Maybe he should try my Mainline...

I recently started to prefer the Crack to the Soloist for the T1. The Burson isthe better amp, but the T1 has such great synergy with the Crack. I don't have the speedball either.

I think the Burson is the best all arounder I have heard yet, I have only heard the GSX-2 once and the Taurus once, and I haven't gotten to play with a Cavalli amp much, and haven't heard a Beta22, but I still think the Burson is an excellent amp. I just happen to prefer the Crack for some reason
post #4707 of 5887

Need your help, after trying to contact BottleHead with no success I hope you guys can give me an answer.

1) When they send the package of the DIY kit how is the package content described ( what is written on the box)  an Amplifier or Electronical Parts of some sort? ( asking because there is a 32% tax in my country on amps compared to 18 on just electronic...big different in price)

2) What is the size weight of the package?

3) is it possible to bring something like that on a plane with me? or is that to risky, they may  think I am carrying a bomb or something, don't want that hassle.

4) How is the BottleHead support? I already have a lot of concerns about DIY as it is and they don't seem too keen to help me with my questions, its been quite a while since i tried contacting them but got no answer.

 

 

Thanks.

post #4708 of 5887

hot sounds from a hot Crack - Chatham 6AS7g and RCA clear top 12AU7:

 

 

Rest of chain includes a Concero HD and HD800 / T90 / T1 cans.

post #4709 of 5887
Quote:
Originally Posted by atomicbob View Post

hot sounds from a hot Crack - Chatham 6AS7g and RCA clear top 12AU7:




Rest of chain includes a Concero HD and HD800 / T90 / T1 cans.

How do you like the concero with the T1?
post #4710 of 5887

Oh that is really cool to see, more of those pics please :bigsmile_face:

 

 

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