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From: martin griffith on 5 Mar 2007 03:11
On 1 Mar 2007 08:00:22 -0800, in sci.electronics.design "Dirk Bruere
at NeoPax" <dirk.bruere(a)gmail.com> wrote:

>I want to amplify and distribute SPDIF to three systems over maybe
>100m feeding into systems that take AES/EBU.
>So, thinking of putting the SPDIF through an amp and then splitting it
>through a 4 Way off the shelf passive F- Splitter.
>Can anyone recommend a cheap amp that might be suitable for this?
>People have suggested TV amps but I can't seem to find any that don't
>cut off below about 88MHz (FM).
>
>I'd also like to boost the voltage a bit as well since I'm feeding
>into EAS/EBU.
>I know I could probably put one together using a buffer amp chip or
>something but I don't want to have to get into making, soldering and
>packaging a solution of my own.
>
>Someone somewhere must do what I want at a reasonable price.
>I know someone does it at an *unreasonable* price - approx $350, but
>that seems aimed at audiofools.
>
>Dirk
Try Kramer, they do this sort of junk
for example:
http://www.kramerelectronics.com/indexes/item.asp?desc=30


martin
From: Dirk Bruere at NeoPax on 5 Mar 2007 09:54
On 5 Mar, 08:11, martin griffith <mart_in_medina(a)ya___.es> wrote:
> On 1 Mar 2007 08:00:22 -0800, in sci.electronics.design "Dirk Bruere
>
>
>
> at NeoPax" <dirk.bru...(a)gmail.com> wrote:
> >I want to amplify and distributeSPDIFto three systems over maybe
> >100m feeding into systems that take AES/EBU.
> >So, thinking of putting theSPDIFthrough an amp and then splitting it
> >through a 4 Way off the shelf passive F- Splitter.
> >Can anyone recommend a cheap amp that might be suitable for this?
> >People have suggested TV amps but I can't seem to find any that don't
> >cut off below about 88MHz (FM).
>
> >I'd also like to boost the voltage a bit as well since I'm feeding
> >into EAS/EBU.
> >I know I could probably put one together using a buffer amp chip or
> >something but I don't want to have to get into making, soldering and
> >packaging a solution of my own.
>
> >Someone somewhere must do what I want at a reasonable price.
> >I know someone does it at an *unreasonable* price - approx $350, but
> >that seems aimed at audiofools.
>
> >Dirk
>
> Try Kramer, they do this sort of junk
> for example:http://www.kramerelectronics.com/indexes/item.asp?desc=30
>
> martin

Cheapest I can find is around $380 ie about 10x the price I can make
the boards for myself. Additionally, they don't even have XLR
connectors which I had budgeted for in my own design costing.
Now you have definately convinced me to do my own :-(
Maybe I'll offer the board for sale as well.

Dirk

From: martin griffith on 5 Mar 2007 11:17
On 5 Mar 2007 06:54:08 -0800, in sci.electronics.design "Dirk Bruere
at NeoPax" <dirk.bruere(a)gmail.com> wrote:

>On 5 Mar, 08:11, martin griffith <mart_in_medina(a)ya___.es> wrote:

>> Try Kramer, they do this sort of junk
>> for example:http://www.kramerelectronics.com/indexes/item.asp?desc=30
>>
>> martin
>
>Cheapest I can find is around $380 ie about 10x the price I can make
>the boards for myself. Additionally, they don't even have XLR
>connectors which I had budgeted for in my own design costing.
>Now you have definately convinced me to do my own :-(
>Maybe I'll offer the board for sale as well.
>
>Dirk
Are you going to reclock, etc?
and what was the price of the Kramer? Nothing on the site,
that i could find


martin
From: Dirk Bruere at NeoPax on 5 Mar 2007 13:37
On 5 Mar, 16:17, martin griffith <mart_in_medina(a)ya___.es> wrote:
> On 5 Mar 2007 06:54:08 -0800, in sci.electronics.design "Dirk Bruere
>
> at NeoPax" <dirk.bru...(a)gmail.com> wrote:
> >On 5 Mar, 08:11, martin griffith <mart_in_medina(a)ya___.es> wrote:
> >> Try Kramer, they do this sort of junk
> >> for example:http://www.kramerelectronics.com/indexes/item.asp?desc=30
>
> >> martin
>
> >Cheapest I can find is around $380 ie about 10x the price I can make
> >the boards for myself. Additionally, they don't even have XLR
> >connectors which I had budgeted for in my own design costing.
> >Now you have definately convinced me to do my own :-(
> >Maybe I'll offer the board for sale as well.
>
> >Dirk
>
> Are you going to reclock, etc?
> and what was the price of the Kramer? Nothing on the site,
> that i could find
>
> martin

The $380 was the cheapest I could find for the Kramer.
And yes, I will be reclocking since the other ends feed into DSP based
systems.
I'm resigned to the fact that I won't find what I want at a reasonable
price.
I've sketched up a design based on what I wrote above and will
breadboard it this week. If it's OK I'll do a cheapo layout and get a
oneoff PCB manufactured with XLR connector positions etc. Probably
take me the best part of a week altogether, but since we will
eventually need around 100 it looks like it will save us some $30,000
over the next year.

Dirk

From: martin griffith on 5 Mar 2007 15:02
On 5 Mar 2007 10:37:49 -0800, in sci.electronics.design "Dirk Bruere
at NeoPax" <dirk.bruere(a)gmail.com> wrote:

>On 5 Mar, 16:17, martin griffith <mart_in_medina(a)ya___.es> wrote:
>> On 5 Mar 2007 06:54:08 -0800, in sci.electronics.design "Dirk Bruere
>>
>> at NeoPax" <dirk.bru...(a)gmail.com> wrote:
>> >On 5 Mar, 08:11, martin griffith <mart_in_medina(a)ya___.es> wrote:
>> >> Try Kramer, they do this sort of junk
>> >> for example:http://www.kramerelectronics.com/indexes/item.asp?desc=30
>>
>> >> martin
>>
>> >Cheapest I can find is around $380 ie about 10x the price I can make
>> >the boards for myself. Additionally, they don't even have XLR
>> >connectors which I had budgeted for in my own design costing.
>> >Now you have definately convinced me to do my own :-(
>> >Maybe I'll offer the board for sale as well.
>>
>> >Dirk
>>
>> Are you going to reclock, etc?
>> and what was the price of the Kramer? Nothing on the site,
>> that i could find
>>
>> martin
>
>The $380 was the cheapest I could find for the Kramer.
>And yes, I will be reclocking since the other ends feed into DSP based
>systems.
>I'm resigned to the fact that I won't find what I want at a reasonable
>price.
>I've sketched up a design based on what I wrote above and will
>breadboard it this week. If it's OK I'll do a cheapo layout and get a
>oneoff PCB manufactured with XLR connector positions etc. Probably
>take me the best part of a week altogether, but since we will
>eventually need around 100 it looks like it will save us some $30,000
>over the next year.
>
>Dirk
And Kramer is the bottom of the food chain..... 380$, ouch
Are you using the CS8406/CS8416 to re clock, or something more
sophisticated?
If you are using transformers, it may be cheaper to wind your own,
more info on epanorama, the commercial ones seem to be a rip off


martin
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