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1. 08:17 PM - Re: Build Your Own XA-U40D - Sort Of... (Bruno MP)
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| Subject: | Re: Build Your Own XA-U40D - Sort Of... |
Hi Matt,
-
Great sound your have. Congratulations.
-
I have xa-300 and xa-c40, but i dont have optical adapter. I leave in Brazi
l and here is very hard to made this opitcal adapter.
-
Do you can to make one for me?
-
I pay your for this.
-
-
Thanks a lot Matt
Bruno
--- Em s=E1b, 17/10/09, Matt Dralle <dralle@matronics.com> escreveu:
De: Matt Dralle <dralle@matronics.com>
Assunto: XDP4000X-List: Build Your Own XA-U40D - Sort Of...
Para: xdp4000x-list@matronics.com
Data: S=E1bado, 17 de Outubro de 2009, 9:59
>In next month I will begin build my new sound system.
>
>I will make all with sony old school produtcs.
>
>Products that I already have:
>
>cdx-c90 head unit
>xdp-4000x processor
>xm-7557 amplifier
>xm-7527 amplifier
>xs-hs6 midbass
>xs-hs4 midrange
>xs-hs1 tweeter
>xs-hs12 subwoofer
>cdx-838 cd changer
>cdx-848x cd changer
>mdx-65 md changer
>
>I need one problem. I no have sony xa-u40d because hard to find. Do you kn
ow how i can make work 3 changers with optical cable? I see in your site on
e adapter that you same made. Do you can made more this?
>
>Thanks
>Bruno
Hi Bruno,
Yeah, the XA-U40D was pretty hard to find back in the day.- Now they're a
lmost impossible to come across.- When I did the install in my Corvette,
I didn't know they made an XA-U40D, but I had three CDX-838 changers and wa
nted to use the optical output.- My problem was compounded by the fact th
at I also had two XDP-4000X processors so I needed to combine the three out
puts and split them back out into two active links.- On the LED-based TOS
LINK fiber drivers, the light output is pretty low to begin with.- Buildi
ng an array of passive combiners just didn't work.- There wasn't enough l
ight left to drive the XDP-4000X reliably.
So, I designed an active combiner/splitter circuit and put the whole thing
in a nice project box.- I used a standard XA-30 for the bus switching, th
en interconnected all of the fiber optics links using the combiner/splitter
.- After 8 years, the system is still working great.- I really love the
sound quality of the C90/XDP-4000X.- I just wish the display was brighte
r on the C90.- I've got no plans to upgrade the system in the Car or the
Truck; still extremely pleased with the performance.
I've attached a PDF of the splitter/combiner circuit, some photos of the ci
rcuit board and enclosure I made, and then a couple shots of the finished p
roduct for fun.
Best regards,
Matt Dralle
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