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** That sort of stereo jack cannot perform speaker switching on a hi-fiTrevor Wilson wrote:
**Sounds like the Pommy hi fi press influence to me. Headphone socket
switches are not the highest quality method of switching a speaker level
audio signal available.
That's because they use cheap plastic junk, rather that commercial
grade jacks like these:
http://www.switchcraft.com/Drawings/14b_cd.pdf
I've seen these in equipment that is used daily for decades with no
problems.
Sure it can. It's just not a good idea. You don't want to run the amp's outputhttp://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
???You need ones that have a pair of independent contacts.
Yep, me too, which is why I couldn't see the point of having thisArfa
I have seen lots of Japanese and some other amplifiers that do not have
speaker cutouts on the headphone jack; but _ALL_ of them had proper
speaker switches of some sort.
YMMV
?-)
** The only way such a jack could perform speaker switching is if the amp'shttp://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can.
You need ones that have a pair of independent contacts.
???
"Michael A. Terrell"
?
? Trevor Wilson wrote:
?
??
?? **Sounds like the Pommy hi fi press influence to me. Headphone socket
?? switches are not the highest quality method of switching a speaker level
?? audio signal available.
?
?
? That's because they use cheap plastic junk, rather that commercial
? grade jacks like these:
?
? http://www.switchcraft.com/Drawings/14b_cd.pdf
?
? I've seen these in equipment that is used daily for decades with no
? problems.
?
** That sort of stereo jack cannot perform speaker switching on a hi-fi
amplifer.
You need ones that have a pair of independent contacts.
at will? Best of both worlds.Arfa
I have seen lots of Japanese and some other amplifiers that do not have
speaker cutouts on the headphone jack; but _ALL_ of them had proper
speaker switches of some sort.
YMMV
?-)
Yep, me too, which is why I couldn't see the point of having this
arrangement ...
Arfa
Surely the best solution would be a 'user' control to mute the speakers
Sure it can. It's just not a good idea. You don't want to run the amp'shttp://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
???You need ones that have a pair of independent contacts.
"William Sommerwerck" wrote in message news:kcig68$59c$1@dont-email.me...
http://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can. It's just not a good idea. You don't want to run the amp's
output
through such a "cheap 'n dirty" "switch".
You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
"William Sommerwerck" wrote in message news:kcig68$59c$1@dont-email.me...
http://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can. It's just not a good idea. You don't want to run the amp's
output
through such a "cheap 'n dirty" "switch".
You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
"Michael A. Terrell" wrote in message
news:Jf-dneBblu8Wc3DNnZ2dnUVZ_hmdnZ2d@earthlink.com...
Gareth Magennis wrote:
"William Sommerwerck" wrote in message news:kcig68$59c$1@dont-email.me...
http://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can. It's just not a good idea. You don't want to run the amp's
output
through such a "cheap 'n dirty" "switch".
You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
No. They switched a pair of resistors in line with the headphones to
reduce the drive. I recall a lot of 180 Ohm resistors on the back of
headphone jacks.
Yes, that would surely still rely on the switched headphone jack passing
the amplifiers power, or not, via its puny switch to the speakers.
What you really need is a pair of independent contacts in the headphone
socket that makes a circuit when a headphone jack is inserted.
This pair of contacts will then remotely switch the speakers off.
These sockets do actually exist.
The late model Denon's I've seen use a switch in the headphone jack to"William Sommerwerck" wrote in message news:kcig68$59c$1@dont-email.me...
http://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can. It's just not a good idea. You don't want to run the amp's
output
through such a "cheap 'n dirty" "switch".
You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
Gareth.
** Not at all.You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
The system of speaker switching that you are suggesting, is often used on"Michael A. Terrell" wrote in message
news:Jf-dneBblu8Wc3DNnZ2dnUVZ_hmdnZ2d@earthlink.com...
Gareth Magennis wrote:
"William Sommerwerck" wrote in message
news:kcig68$59c$1@dont-email.me...
http://www.switchcraft.com/Drawings/14b_cd.pdf
That sort of stereo jack cannot perform speaker switching
on a hi-fi amplifier.
Sure it can. It's just not a good idea. You don't want to run the amp's
output
through such a "cheap 'n dirty" "switch".
You need ones that have a pair of independent contacts.
???
Presumably to switch a remote relay.
No. They switched a pair of resistors in line with the headphones to
reduce the drive. I recall a lot of 180 Ohm resistors on the back of
headphone jacks.
Yes, that would surely still rely on the switched headphone jack passing
the amplifiers power, or not, via its puny switch to the speakers.
What you really need is a pair of independent contacts in the headphone
socket that makes a circuit when a headphone jack is inserted.
This pair of contacts will then remotely switch the speakers off.
These sockets do actually exist.
Gareth.