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post #8446 of 9589
Quote:
Originally Posted by Tilpo View Post


As far as I know balanced is only useful when you need very long wires, which is never the case in rigs for personal use.
Balanced mainly finds its use in professional applications. In personal applications there really isn't any point in getting balanced except for the doubling of power output of the amplifier.


This

Seriously, I find it unnecessary building a balanced system if you are satisfied with your current se fones, unless your future rig requires so.

post #8447 of 9589

Fancied a quick and dirty cheap pair of small speakers for my computer system, these were the result.

 

speaker-01.jpg

 

speaker-02.jpg

 

Enclosures are made from Sainsbury's acacia placemats with stripwood inside for added strength and finished with a couple of applications of teak oil.

 

I've used Tang Band W3-1364SA 3" Bamboo drivers, Solen binding posts and Twaron Angel Hair wadding.


Edited by meme - 1/14/12 at 2:08pm
post #8448 of 9589
Quote:
Originally Posted by Tilpo View Post


As far as I know balanced is only useful when you need very long wires, which is never the case in rigs for personal use.
Balanced mainly finds its use in professional applications. In personal applications there really isn't any point in getting balanced except for the doubling of power output of the amplifier.


Two different applications being mixed together here.  In pro usage, balanced is used to provide the ability to have longer cable runs with less noise, in a hifi system using balanced components provides better channel separation.  You could get similar results by having to discrete single ended channels.

post #8449 of 9589

Hi all, two things for showing:

 

1... New case for my O2.

O2case3-1.jpg

233

o2.jpg

 

2... SE-SE version of The Wire

wire.jpg

wire2.jpg

wire3.jpg

 

And both together...

headamps.jpg

 

The case used for the Wire is a little on the large size but it was bought well before I got my hands on the miniscule pcb's designed by opc.

 

Hope you like. Regards.

 

Paul

post #8450 of 9589
Quote:
Originally Posted by samsquanch View Post





Two different applications being mixed together here.  In pro usage, balanced is used to provide the ability to have longer cable runs with less noise, in a hifi system using balanced components provides better channel separation.  You could get similar results by having to discrete single ended channels.

I don't think bad channel separation is an issue in the Beta22. Cross talk should be below an audible level on both 2 and 3 channel builds.
post #8451 of 9589

Pioneer SE500 -- SFI 120Ω mod

 

Thought that the T50RP drivers would be cool to transplant in the SE500.. Then again, I think they deserve a better home. (And they probably not fit, due to the unusual enclosure)

 

IMG_1049.JPG

Comparison between the Fostex T50RP and the Pioneer SE500.

 

IMG_1055.jpgIMG_1061.jpg

 

 

IMG_1063.JPGIMG_1085.jpg

PIEZO DRIVER!!! Never seen anything like it.

 

 

IMG_1087.jpgIMG_1089.jpg

                                                                      Paxmate!!!

  

IMG_1091.jpgIMG_1101.jpg

insides fitted with Paxmate!                           FOAM!!                                              

 

IMG_1104.jpgIMG_1113.jpg

washin all the inkage out

IMG_1115.JPGIMG_1119.jpg

"ink" foam, cut in half

 

IMG_1131.JPGIMG_1134.jpg

 

IMG_1139.jpgIMG_1145.jpg

The drivers are pressure-fitted, pressing against the Paxmate and the rear foam square.

 

 

IMG_1147.jpgIMG_1154.jpg

DONE!!

They sound pretty good! Only took a couple of hours.

Changing out the earpads would improve the sound, but I'm gonna live with them for now.

 

 

post #8452 of 9589
Quote:
Originally Posted by Tilpo View Post


I don't think bad channel separation is an issue in the Beta22. Cross talk should be below an audible level on both 2 and 3 channel builds.


I know I can't hear any on my build.

post #8453 of 9589
Quote:
Originally Posted by Paul Blythe View Post

Hi all, two things for showing:

 

1... New case for my O2.

O2case3-1.jpg

233

o2.jpg

 

2... SE-SE version of The Wire

wire.jpg

wire2.jpg

wire3.jpg

 

And both together...

headamps.jpg

 

The case used for the Wire is a little on the large size but it was bought well before I got my hands on the miniscule pcb's designed by opc.

 

Hope you like. Regards.

 

Paul


That O2 case is nice, what is the case from?

 

post #8454 of 9589
Quote:
Originally Posted by Starfire View Post


That O2 case is nice, what is the case from?

 



 

Thanks, it's a custum design penned and built by myself... it's made from layered Styrene sheeting so is fully plastic. The inner case slides out for easy access of the O2's pcb should it be requied.

 

Paul

post #8455 of 9589
Quote:
Originally Posted by Tilpo View Post


As far as I know balanced is only useful when you need very long wires, which is never the case in rigs for personal use.
Balanced mainly finds its use in professional applications. In personal applications there really isn't any point in getting balanced except for the doubling of power output of the amplifier.


i guess everyone but jcx missed my point, but hes right i wont continue it here.

post #8456 of 9589
Quote:
Originally Posted by ilikepie116 View Post

Pioneer SE500 -- SFI 120Ω mod

 

IMG_1154.jpg

DONE!!

They sound pretty good! Only took a couple of hours.

Changing out the earpads would improve the sound, but I'm gonna live with them for now.


Neat looking headphones. Cool project!

 

post #8457 of 9589
Quote:
Originally Posted by meme View Post

Fancied a quick and dirty cheap pair of small speakers for my computer system, these were the result.

 

speaker-01.jpg

 

 

 

Enclosures are made from Sainsbury's acacia placemats with stripwood inside for added strength and finished with a couple of applications of teak oil.

 

I've used Tang Band W3-1364SA 3" Bamboo drivers, Solen binding posts and Twaron Angel Hair wadding.


Beautiful.  How do they sound, and what are you driving them with?  How did you calculate the optimal enclosure and port for the drivers?

 

post #8458 of 9589
Quote:
Originally Posted by HeadphoneAddict View Post


Beautiful.  How do they sound, and what are you driving them with?  How did you calculate the optimal enclosure and port for the drivers?

 

 

Cheers!

 

At the moment I'm driving them with an Icon Audio HP8 headphone amp that puts out a face melting 2 wpc.

 

They sound better than I thought they would, obviously they have their limitations (rolled off extremes) but the midrange is nice and clear, the sound is generally on the warm/relaxed side and they actually do bass quite well.

 

I didn't do any calculations, just based the enclosure on a Fostex design used for similar sized drivers.

post #8459 of 9589

reading this threads intimidating, i didnt know you'd need a whole box for a power supply :| :| i thort you just had to get a brick with leads either side!

post #8460 of 9589
Quote:
Originally Posted by rogan View Post

reading this threads intimidating, i didnt know you'd need a whole box for a power supply :| :| i thort you just had to get a brick with leads either side!


Isn't the "brick" a "whole box?"  Seriously, it's not meant to be intimidating.  It's just that off-the-shelf "bricks" are not the best quality power supplies when it comes to high-fidelity audio.  More importantly, you can hear the difference.  Most of the bricks that we build around here are not very expensive and depending on how you use them, they can be used for many different headphone amps.
 

 

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