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10th December 2003, 06:50 PM
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#1 |
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diyAudio Member
Join Date: Jul 2002
Location: Toronto, Canada
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Input selector add on for a single input GC amp
Here's my idea of an improved Input Chooser. I call it a Switching Bar
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www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC |
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10th December 2003, 06:53 PM
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#2 |
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diyAudio Member
Join Date: Jul 2002
Location: Toronto, Canada
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The connections inside are minimized. I used WBT RCA connectors mounting directly between a switcher and the amp (so no additional interconnect needed). The toggles take care of source switching (separate for R and L channel, disconnecting both signal and ground).
__________________
www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC |
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10th December 2003, 07:00 PM
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#3 |
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diyAudio Member
Join Date: Jul 2002
Location: Toronto, Canada
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Here's the construction detail
__________________
www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC |
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10th December 2003, 07:32 PM
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#4 |
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diyAudio Member
Join Date: Jul 2003
Location: SW London
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Very nice Peter. I had a similar idea myself recently, though it was just multiple interconnects with a rotary switch before the amp inputs (a bit shabby in truth). The concept is nice because it keeps extra switches and knobs outside of small amp cases.
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10th December 2003, 08:22 PM
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#6 |
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diyAudio Member
Join Date: Jul 2002
Location: Toronto, Canada
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For those who worry (or use fat cables) an extra wooden support under the bar can be used. I broke few of those RCA'a before, so I know they can carry the load
They may sound different under more stress as well, but I wouldn't worry about it. I use a single input on my amp anyway. I believe that elimination of additional interconnect is of most importance here.
__________________
www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC |
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10th December 2003, 09:23 PM
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#7 |
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diyAudio Member
Join Date: Dec 2003
Location: .
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Peter, rotary switches are normally preferred for input switching as the contacts get 'wiped' each time it's rotated. With toggle switches no such action takes place, it's possible for them to become poor over a period of time.
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10th December 2003, 09:51 PM
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#8 |
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diyAudio Member
Join Date: Jul 2002
Location: Toronto, Canada
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I would imagine that toggles could be compared to relays, which are commonly used for source switching.
http://www.marklevinson.com/image_li...2CUTAWA_lo.jpg
__________________
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