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Headamp Blue Hawaii Special Edition - Page 430

post #6436 of 6442

Have the 220v units started shipping yet?

A friend was asked to paid the remainder awhile back and he hasn't heard from Justin since =/.

post #6437 of 6442

the first ones are burning in now. ive emailed everyone that is receiving one from the first 220v shipment to confirm shipping addresses. those emails will go out weekly

HeadAmp Audio Electronics - home of the Pico and Gilmore amps.  Now with Audeze, Fostex, HiFiMAN, Sennheiser, and STAX.
Find us at www.HeadAmp.com

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post #6438 of 6442
Quote:
Originally Posted by Point489VAC View Post
 

It has been a while since I logged on this site and I've been playing "catch-up". The BHSE has been working flawlessly BTW. Very enjoyable!

 

For those discussing balanced vs unbalanced connections here is an excellent summary - http://www.bhphotovideo.com/explora/audio/buying-guide/xlr-cable-just-cable-right

 

I prefer Mogami Gold Studio cable and I use the same wires throughout the studio and the house. The machine room has a patch bay that allows me to route the signal wherever I need it. Right now I need a pair of jacks at my desk because that's where the BHSE is located. I'm using 50' mic cable runs to some jacks in the studio right now and then another 125' (approximately) of cable in the walls back to the rack with the source gear.

 

From "The Professional Recording Studio Manual by Roger Ginsley: "The main problem with unbalanced systems (RCA) is that they have an inherent problem called 'common-impedance coupling' whereby the 'second' (or ground) connection carries not only the audio signal but also the power line current." This is bad. It's nothing new and audio engineers have known this since the beginning of time.

 

A proper XLR circuit using shielded cable will reject noise and eliminate the above problem because it separates the audio from the ground connection. It results in a pure signal that does not degrade even over long distances and rejects noise that in an unbalanced system will simply get added to the audio signal. It has a lower noise floor (more audio signal and less noise) and is absolutely preferred in a studio environment.

 

It's actually not a mater of debate. XLR connections are superior technically and in practice. You don't need to worry about that. Balanced connections will outperform your unbalanced connections. You can cheat by using very short runs of unbalanced cable but the above problem does not go away. The simple fact is that unbalanced equipment is less expensive to make but it always contains this flaw. Consumer audio equipment has standardized around unbalanced connections but not because it performs better. 

 

Having said all of that, please don't worry about unbalanced connections if you are using them. They work and many people don't have any issue with them. Some will even argue they prefer them and I think that's all just fine. I just happen to use balanced throughout and I have cable and routing issues that the standard stereo listener may not have.

+1  Exactly…… Thank you Point489VAC for adding additional excellent information and reinforcement to my posts regarding the superiority of balanced to non balanced 

post #6439 of 6442
Quote:
Originally Posted by Bonesy Jonesy View Post

+1  Exactly…… Thank you Point489VAC for adding additional excellent information and reinforcement to my posts regarding the superiority of balanced to non balanced 

Agreed if one is speaking of true balanced (differential) circuit topology versus "faux-balanced" which, unfortunately, is all too common in many of the components that feature XLR inputs and/or outputs.
post #6440 of 6442
Quote:
Originally Posted by vinyllp33 View Post


Agreed if one is speaking of true balanced (differential) circuit topology versus "faux-balanced" which, unfortunately, is all too common in many of the components that feature XLR inputs and/or outputs.

+1 Yes only for true balanced (differential) circuit topology which is I am assuming the BHSE and GS-X Mk2 have ! 

post #6441 of 6442
Quote:
Originally Posted by Golfnutz View Post
 

Have you tested the wiring to make sure it was install correctly? You can buy cheap testers that plug right into the receptacle to verify this.

 

+1  To test all the tube ports and the outputs from the headphone ports / jacks and compare with what you should get (from the design values) will verify if the Stax headphones are receiving the correct voltage and current.   

post #6442 of 6442

Well I don't have a tube tester and anyway I'd have thought the simplest step would be to test the headphone output socket, as that point is the culmination of the entire amp. Assuming that's a good first test, what is it I should be measuring to show if the amp is performing correctly or not? Above the usual balance/offset of course.

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