Anybody know what happens if you split the signal from a source 2 ways (to 2
amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used by
one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....

"Keith G" wrote in message
...

Anybody know what happens if you split the signal from a source 2 ways (to
2 amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used
by one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....




If you are using a splitter and only feeding one amplifier and the other
destination plug unconnected then no difference. If you are using both
destination amps then it depends on the input impedance of the destination
amplifiers as to if it loads the source too much, under these conditions you
may end up with a weaker signal. Suck it and see :-))

Mike

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

Anybody know what happens if you split the signal from a source 2 ways
(to 2 amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used
by one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....




If you are using a splitter and only feeding one amplifier and the other
destination plug unconnected then no difference. If you are using both
destination amps then it depends on the input impedance of the destination
amplifiers as to if it loads the source too much, under these conditions
you may end up with a weaker signal. Suck it and see :-))



OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared between
two amps.) Doesn't seem to be making a lot of difference??

"Keith G" wrote in message
...

"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

Anybody know what happens if you split the signal from a source 2 ways
(to 2 amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used
by one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....




If you are using a splitter and only feeding one amplifier and the other
destination plug unconnected then no difference. If you are using both
destination amps then it depends on the input impedance of the
destination amplifiers as to if it loads the source too much, under these
conditions you may end up with a weaker signal. Suck it and see :-))



OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared
between two amps.) Doesn't seem to be making a lot of difference??









Why two amps from one source Keith? Are you feeding different rooms or
doing biamping experiments? Just me being nosey..tell me to FO if its not
show n' tell ;-)

"Mike Gilmour" wrote


OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared
between two amps.) Doesn't seem to be making a lot of difference??




Why two amps from one source Keith? Are you feeding different rooms or
doing biamping experiments? Just me being nosey..tell me to FO if its not
show n' tell ;-)



It's no big secret Mike. I've been doing some amp/speaker pairings lately to
explore the effects of different valve amps playing into different speakers
(nothing too special - all bread and butter stuff). See:

http://www.apah69.dsl.pipex.com/keit...akerlineup.jpg

and

http://www.apah69.dsl.pipex.com/keit...ow/twoamps.jpg


Having two 'identical' amps sharing the same source simultaneously allows me
to make a quite good direct comparison on the different speakers by means of
a bit of deft volume up/volume down 'prestidigitation'. (Shiny Nigel's
booked himself in for tomorrow evening again and I'll need to have some new
tricks to keep him amused!! :-)

It has actually been very interesting to discover how the amp/speaker
pairings do, in fact, alter the sound.

If you are interested, I would have to say the sweetest 'vinyl' sound comes
from the 4wpc triode amp on a pair of old 84 dB B&W speakers (would you
believe!!) while the best 'digital sound' (CD, DAB, MP3s) comes from the
Chinese EL34s on a pair of Ruarks (not shown in the above pic) - when a
subwoofer is about as much use as an ashtray on a motorbike!! (The Ruarks go
down to 38 Hz and the EL34s have no trouble finding it!!)

Just me arseing about - I can put a stop to it any time and go with just
about any combination, but you know what it's like !!

;-)

"Keith G" wrote in message
...

"Mike Gilmour" wrote


OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared
between two amps.) Doesn't seem to be making a lot of difference??




Why two amps from one source Keith? Are you feeding different rooms or
doing biamping experiments? Just me being nosey..tell me to FO if its
not show n' tell ;-)



It's no big secret Mike. I've been doing some amp/speaker pairings lately
to explore the effects of different valve amps playing into different
speakers (nothing too special - all bread and butter stuff). See:

http://www.apah69.dsl.pipex.com/keit...akerlineup.jpg

and

http://www.apah69.dsl.pipex.com/keit...ow/twoamps.jpg


Having two 'identical' amps sharing the same source simultaneously allows
me to make a quite good direct comparison on the different speakers by
means of a bit of deft volume up/volume down 'prestidigitation'. (Shiny
Nigel's booked himself in for tomorrow evening again and I'll need to have
some new tricks to keep him amused!! :-)

It has actually been very interesting to discover how the amp/speaker
pairings do, in fact, alter the sound.

If you are interested, I would have to say the sweetest 'vinyl' sound
comes from the 4wpc triode amp on a pair of old 84 dB B&W speakers (would
you believe!!) while the best 'digital sound' (CD, DAB, MP3s) comes from
the Chinese EL34s on a pair of Ruarks (not shown in the above pic) - when
a subwoofer is about as much use as an ashtray on a motorbike!! (The
Ruarks go down to 38 Hz and the EL34s have no trouble finding it!!)

Just me arseing about - I can put a stop to it any time and go with just
about any combination, but you know what it's like !!

;-)



I've always thought that valve amps and speakers should come as a pair,
though maybe half the enjoyment is finding out what works well with what...
A bad match ends up with folk either laying fault with the amp or at the
speakers door (didn't know speakers had doors ;-) What do you think of the
Ruarks as I used to hear some good sounds at the Ruark room at London hifi
shows..always struck me as being well made though I've never owned a pair.
One of the dems was the Saint Saens Organ Symphony, can't now remember which
model it was but I stayed through as it was very enjoyable and certainly
held together well.

We have a circle of audio nuts around here in which we take turns in
visiting. I'm off soon to Aberdeen to stay overnight and do some serious
listening/supping ...seems we are now all into room correction so its all
about measuring rooms and experimentation with bass traps, diffusers etc.
(all sighted comparisions but what the hell).
Arseing about with audio gear is half the fun plus you soon get to know what
pairs well together(sighted of course ;-)

Keith G wrote:


"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

Anybody know what happens if you split the signal from a source 2 ways
(to 2 amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used
by one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....




If you are using a splitter and only feeding one amplifier and the other
destination plug unconnected then no difference. If you are using both
destination amps then it depends on the input impedance of the
destination amplifiers as to if it loads the source too much, under these
conditions you may end up with a weaker signal. Suck it and see :-))



OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared
between two amps.) Doesn't seem to be making a lot of difference??

You need to be very careful with this. Only half the electrons will get to
each amp which means the transparency, deep bass and overall stereo clarity
will suffer (or improve depending one which type of electrons each amp
gets) ;-)

IAn
--
Ian Bell

"Ian Bell" wrote in message
...
Keith G wrote:


"Mike Gilmour" wrote in message
...

"Keith G" wrote in message
...

Anybody know what happens if you split the signal from a source 2 ways
(to 2 amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being
used
by one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....




If you are using a splitter and only feeding one amplifier and the other
destination plug unconnected then no difference. If you are using both
destination amps then it depends on the input impedance of the
destination amplifiers as to if it loads the source too much, under
these
conditions you may end up with a weaker signal. Suck it and see :-))



OK Mike, it is being sucked and seen - seems to be OK. (Tuner shared
between two amps.) Doesn't seem to be making a lot of difference??

You need to be very careful with this. Only half the electrons will get
to
each amp which means the transparency, deep bass and overall stereo
clarity
will suffer (or improve depending one which type of electrons each amp
gets) ;-)

IAn
--
Ian Bell


Keith has already talked to the electrons. The male electrons will turn left
to amplifier A and the females right to amplifier B. This may of course lead
to deeper bass from amplifier A but this has been EQ'd and level matched
with amplifier B.

In message , Keith G
writes

Anybody know what happens if you split the signal from a source 2 ways (to 2
amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used by
one amp or b) used by both amps at the same time (unlikely)???

Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....










It depends on the input impedance of the amps. If (as is very likely)
the inputs are much higher impedance than the output impedance of the
driving stage, then it will have no effect.

(It did sound rather dim, but that's only to be expected).
--
Chris Morriss

Keith G wrote:

Anybody know what happens if you split the signal from a source 2 ways (to 2
amplifiers) with a '1 goes into 2' RCA phono adaptor??

Is the signal weaker? Does it matter if the signal is a) only being used by
one amp or b) used by both amps at the same time (unlikely)???

Most signals from a preamp or CD player are provided by a low impedance output
less than 600 ohms.

The usual minimum input Z of an amplifier is 10k, so two such
devices connected to the same 600 ohm outlet will not noticeably change the
signal level,
or its quality.
Higher input Z of other gear will have even less effect.

Patrick Turner.



Apologies if this sounds dim, but I have no real idea and I have the
adaptors and the need....