Looking for an audio electronics DIY group

Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

Marky P.

In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

Marky P.

--
*If you think nobody cares about you, try missing a couple of payments *

Dave Plowman London SW
To e-mail, change noise into sound.

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't accept
that they were wrong. But then maybe that's true of all Newsgroups!
--
Kevin Seal
F800ST
{walrus1 at gmail dot com}

On Wed, 30 Apr 2008 23:42:01 +0100, Kevin Seal wrote:

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't accept
that they were wrong. But then maybe that's true of all Newsgroups!

Think it's true of all newsgroups. Anyway, I will remain off-topic
and mention what I plan to do here. I'm building a 5.1 switching unit
to connect a Blu-ray player & SACD/DVD-A player to the 5.1 inputs of
my amp. Originally, I had the idea of using 3 douple pole relays
(BT47's) operated by a single push button and powered by 12vdc. But
now I have found a 6-pole rotary switch at RS, which would do the job
without the need for power, or relays. The only thing is the thought
of soldering 18 wires to a rotary switch :-(

Marky P.

Marky P wrote:

On Wed, 30 Apr 2008 23:42:01 +0100, Kevin Seal wrote:

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm
building a 5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't
accept that they were wrong. But then maybe that's true of all
Newsgroups!

Think it's true of all newsgroups. Anyway, I will remain off-topic
and mention what I plan to do here. I'm building a 5.1 switching unit
to connect a Blu-ray player & SACD/DVD-A player to the 5.1 inputs of
my amp. Originally, I had the idea of using 3 douple pole relays
(BT47's) operated by a single push button and powered by 12vdc. But
now I have found a 6-pole rotary switch at RS, which would do the job
without the need for power, or relays. The only thing is the thought
of soldering 18 wires to a rotary switch :-(

Marky P.

Piece of p1ss!

Try fitting a new main funtion switch in a Nagra III !
Mind you I used to cheat sometimes and only replace one wafer!



--

Ashley

In article ,
Marky P wrote:
On Wed, 30 Apr 2008 23:42:01 +0100, Kevin Seal wrote:

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't accept
that they were wrong. But then maybe that's true of all Newsgroups!

That tends to suggest you think you are always right. ;-)

All 'hi-fi' groups tend to be very different from others - disagreeing in
any way with a vinyl or valve nutter tends to bring a response far worse
than if you'd insulted their spouse. ;-)

Think it's true of all newsgroups. Anyway, I will remain off-topic
and mention what I plan to do here. I'm building a 5.1 switching unit
to connect a Blu-ray player & SACD/DVD-A player to the 5.1 inputs of
my amp. Originally, I had the idea of using 3 douple pole relays
(BT47's) operated by a single push button and powered by 12vdc. But
now I have found a 6-pole rotary switch at RS, which would do the job
without the need for power, or relays. The only thing is the thought
of soldering 18 wires to a rotary switch :-(

You certainly need to get your head round wiring multipole switches - but
then again you need to with relays. The actual soldering wouldn't be much
different as signal relays can have pretty densely packed connectors.
The relay approach appeals to me as it would be easy to add remote
operation. And the cost of the parts with either approach insignificant
compared to the work in building it.

--
*60-year-old, one owner - needs parts, make offer

Dave Plowman London SW
To e-mail, change noise into sound.

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
On Wed, 30 Apr 2008 23:42:01 +0100, Kevin Seal wrote:

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't accept
that they were wrong. But then maybe that's true of all Newsgroups!

That tends to suggest you think you are always right. ;-)

In that particular case, I was. I mean, I had worked for the company for
over 12 years and knew it's products inside out. But no, what I was
saying was wrong, because the other person said I was.

All 'hi-fi' groups tend to be very different from others - disagreeing in
any way with a vinyl or valve nutter tends to bring a response far worse
than if you'd insulted their spouse. ;-)

Yes, it was vinyl related. Frequency response of Shure cartridges with
different loadings.
--
Kevin Seal
F800ST
{walrus1 at gmail dot com}

On Thu, 01 May 2008 09:31:58 +0100, "Dave Plowman (News)"
wrote:

In article ,
Marky P wrote:
On Wed, 30 Apr 2008 23:42:01 +0100, Kevin Seal wrote:

In message , "Dave Plowman (News)"
writes
In article ,
Marky P wrote:
Is there an audio electronics DIY newsgroup anywhere? I'm building a
5.1 switching box and need some advice.

uk.d-i-y or uk.rec.audio might yield some help.

I found uk.rec.audio populated with too many people who wouldn't accept
that they were wrong. But then maybe that's true of all Newsgroups!

That tends to suggest you think you are always right. ;-)

All 'hi-fi' groups tend to be very different from others - disagreeing in
any way with a vinyl or valve nutter tends to bring a response far worse
than if you'd insulted their spouse. ;-)

Think it's true of all newsgroups. Anyway, I will remain off-topic
and mention what I plan to do here. I'm building a 5.1 switching unit
to connect a Blu-ray player & SACD/DVD-A player to the 5.1 inputs of
my amp. Originally, I had the idea of using 3 douple pole relays
(BT47's) operated by a single push button and powered by 12vdc. But
now I have found a 6-pole rotary switch at RS, which would do the job
without the need for power, or relays. The only thing is the thought
of soldering 18 wires to a rotary switch :-(

You certainly need to get your head round wiring multipole switches - but
then again you need to with relays. The actual soldering wouldn't be much
different as signal relays can have pretty densely packed connectors.
The relay approach appeals to me as it would be easy to add remote
operation. And the cost of the parts with either approach insignificant
compared to the work in building it.

If I went the relay route, I would've used Veroboard for mounting the
relays and wiring. But I'm thinking of trying the makaswitch at RS as
it's pretty cheap. Now I need to find six different coloured phono
sockets/plugs. I can only find five colours.

Marky P.

In article , Kevin Seal
wrote:
In message , "Dave Plowman (News)"
writes

All 'hi-fi' groups tend to be very different from others - disagreeing
in any way with a vinyl or valve nutter tends to bring a response far
worse than if you'd insulted their spouse. ;-)

Yes, it was vinyl related. Frequency response of Shure cartridges with
different loadings.

Curious to know what answer(s) you got. I've been looking at loading of MM
carts recently. Have noticed that various pages, etc, on this seem to only
deal with electrical or mechanical resonances/loadings in isolation so give
misleading advice.

FWIW I did some recent measurements and still got optimum for Shure MMs
using about 47k/280pF as traditionally recommended. Results will be
appearing elsewhere in the near future. :-)

Slainte,

Jim

--
Change 'noise' to 'jcgl' if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

In message , Marky P
wrote

If I went the relay route, I would've used Veroboard for mounting the
relays and wiring. But I'm thinking of trying the makaswitch at RS as
it's pretty cheap. Now I need to find six different coloured phono
sockets/plugs. I can only find five colours.

www.cpc.co.uk

Plugs with 7 different colours (coloured ring pack to customise the
plug)
CN00404
CN00405
CN00416 (pack of rings - red, black, white, yellow, blue, green and
brown)
All three of the above are inter-related
http://cpc.farnell.com/jsp/level5/module.jsp?moduleId=cpc/256820.xml

Plugs 7 colours
CN00406
CN00407
CN00416 (Coloured rings - as above)

Sockets 6 colours (nickel?)
Red AV14962
Black AV14963
White AV14964
Yellow AV14965
Blue AV14966
Green AV14967

Sockets 6 colours (gold)
AV14968 through to AV 14973

Sockets 6 colours (gold)
AV11154 through to AV11159


Make sure all colours are in stock before ordering - they may not
re-stock un-popular colours.

--
Alan
news2006 {at} amac {dot} f2s {dot} com