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Headamp Blue Hawaii Special Edition - Page 172

post #2566 of 5017
Quote:
Originally Posted by justin w. View Post

there are 2 mains fuses, there's a drawer on the AC input module.

Ok, so firstly, it's a nice design to have all 4 fuses externally accessible. That didn't stop me from taking the top off the power supply to admire the famed build quality!

 

Secondly, I'm curious why there are 2 mains fuses on the input. One per channel? One spare? They both have the same 2A/250V slow blow rating.

post #2567 of 5017
Quote:
Originally Posted by TheAttorney View Post

Ok, so firstly, it's a nice design to have all 4 fuses externally accessible. That didn't stop me from taking the top off the power supply to admire the famed build quality!

 

Secondly, I'm curious why there are 2 mains fuses on the input. One per channel? One spare? They both have the same 2A/250V slow blow rating.

 

One on the live, one on the neutral. It protects against incorrectly wired power outlets.

 

Imagine a mis-wired power outlet where the live and neutral are switched, and the live is not fused. In this case you can have an equipment fault from live to ground, but the single fuse will not blow. The fault current will continue to run.


Edited by Beefy - 9/23/12 at 9:06am
post #2568 of 5017
The 2 input fuses are because of European 240v standard where
Both wires are hot with respect to ground.
post #2569 of 5017

a conspiracy on the part of fuse manufacturers, who lobbied heavily for this standard back in the 1900's, I'm sure of it!!!

 

Quote:
Originally Posted by kevin gilmore View Post

The 2 input fuses are because of European 240v standard where
Both wires are hot with respect to ground.
post #2570 of 5017
Quote:
Originally Posted by kevin gilmore View Post

The 2 input fuses are because of European 240v standard where
Both wires are hot with respect to ground.

I learn something new every day. However, this is the first time I've come across any component with 2 mains fuses. For example, my Nagra CDP, which is very European, only has got one fuse.

 

Anyway, some of you have probably guessed where this could be leading, but I know this topic irritates a lot of people, so I just quietly get on with it...

post #2571 of 5017

Let's put it this way, one fuse is ok but two are better. 

post #2572 of 5017
Quote:
Originally Posted by kevin gilmore View Post

The 2 input fuses are because of European 240v standard where
Both wires are hot with respect to ground.

 

Hmmm, I didn't know that. For the Australian 240V supply, neutral is at ground potential.

post #2573 of 5017

The old Euro standard called for two 120VAC lines so the potential between them would be 240VAC.  This has been largely dropped now due to the more expensive gear needed to maintain the setup so when old systems are refurbished they are rewired. 

post #2574 of 5017
Quote:
Originally Posted by nicholas029 View Post

I have three sources for my BHSE/009 set up that includes a phono stage, an SACD with its internal DAC, and an outboard DAC for my cd player and my iTunes library.  linestage output is different on each requiring a volume adjustment depending on source.  What I have found useful however is that when I do a cd rip or download a digital file from HDtrack or Linn to my computer, I use a program called Wave Editor for Mac to convert the file to 24 bits (just adds 8 empty bits before changes are made to the original file) and adjust gain to - 4 to -5 dB for all tracks.  This does not introduce compression but allows me to listen to many different songs without reaching for the volume control. I first learned about this approach from reading comments by Barry Diament, sound mastering engineer, over on the Steve Hoffman forums concerning proper techniques to converting vinyl to digital files.  Wave Editor also allows for resampling and a very fine dither algorithm. Perhaps this might help solve your issues with volume.  

 

As for the BHSE, I am still "breaking in" my stock tubes, new issue Mullard EL34's.  I have 50 hours on them so far.  They are not at their best for at least an hour, preferably two.  I did have to adjust bias again, as per Justin's video, because of normal drift.  I have two other stat amps, well known around here, and I can honestly say that the BHSE is hands down the best in combination with the 009 that I have heard regardless of source.  Very enjoyable and non fatiguing to listen to for hours.  Personally what I think most people hear as "brightness" is poor mastering, particularly compression, and high frequency distortion.  The BHSE will present flaws in other parts of the system, particularly source, with brutal accuracy.  

 

I have a matched quad of SED winged C tubes that I may try after the Mullard's have about 250 hours on them.  Any comparisons between these options?

I use my BHSE with the SED winged C. Imho they sound better than the stock Mullard. You should try those.

Regards,

Erico 

post #2575 of 5017
Erico, it's been a while, are you using the LL and BHSE equally with the 009 or? What are your impressions of these two amps after a few months of ownership?
post #2576 of 5017

Count me as curious, too.

 

Quote:
Originally Posted by arnaud View Post

Erico, it's been a while, are you using the LL and BHSE equally with the 009 or? What are your impressions of these two amps after a few months of ownership?
post #2577 of 5017

I've just had to cancel my order for the Aristaeus because there are things I have to get sorted out with my home, I do have the BHSE though which seems to be getting better the more I use it. I've still got the GS-X on order which I'll not be cancelling.

post #2578 of 5017
Quote:
Originally Posted by MorbidToaster View Post

Count me as curious, too.

 

Consider it as my personal opinion, please.

After over a couple of months of listening, I prefer the BHSE with the 007 and the LL with the 009. Gonna keep both and I'm selling the WES. Both are excellent.

Regards,

Erico


Edited by ericohgb - 9/27/12 at 6:58am
post #2579 of 5017

That's the general conclusion I've been hearing from a few people with both. Always want to hear more from the community around here though. 

 

Still like the try the BHSE for myself. :D

 

Quote:
Originally Posted by ericohgb View Post

Consider it as my personal opinion, please.

After over a couple of months of listening, I prefer the BHSE with the 007 and the LL with the 009. Gonna keep both and I'm selling the WES. Both are excellent.

Regards,

Erico

post #2580 of 5017

Pardon my ignorance, please.  I have a multimeter set at 0.000 range and I check my EL34's to "zero" them as per Justin's video because I can.  My stock new issue Mullard's that are well matched in plate voltage drift all over the place.  My question is do they settle down over time and use or is this "normal".  Truthfully I can not tell much sonic difference other than they continue to get better in my perception of midrange vocals with increasing hours, now at a little 50 hours.  Education appreciated. 

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