Re: Sorta on topic, shop stereo and using the phono input
- From: "Steve W." <csrNOT@xxxxxxxxx>
- Date: Fri, 03 Oct 2008 23:54:05 -0400
Jon Anderson wrote:
I work from home and have a fairly nice shop stereo setup, a 90 watt JVC tuner/amp, cd player, tape player, and I run the shop tv through the 2nd tape input. With some nice Roger Sound Labs studio monitor speakers, I can hear music or news over shop noise. Just undertook a couple minor upgrades. I added a set of small metal case Optimus speakers for TV, as the big speakers have too much bass. That worked great, until I tried upgrade #2. I listen to Pandora.com when working at my computer, and wanted to run the output into the stereo so I can listen to my custom stations while working. I only have phono left for input, but wasn't sure it would work, so using an 1/8 to RCA adapter, I plugged in my MP3 player. Still running through the Optimus speakers and probably a good thing. There was a hell of a loud noise that only slightly resembled the Robin Trower song playing, then the speakers went dead. They are both deader than doornails. I know the amp will output far more than they will handle, but I had the volume way down. Seems like maybe the input was more than a bit higher than it should be and thus the output was as well? (luckily the Optimus speakers came out of a yard sale free pile...)
Anyway, since a sound card will output to speakers or headphones equally well, I assumed the test would validate hooking up the computer before running wires across the shop. I'd still like to do this, but it sure seems there's some mismatch between what a sound card/MP3 player puts out and what a phono input wants to see. Is there a quick and easy way to match up the signals? Or should I just make up a switch box and switch the the input from the computer with one of the other inputs I'm already using.
Thanks,
Jon
The problem is that you CANNOT use the phono inputs. They feed into a small preamp and equalizer circuit (likely that is fried now because of the high signal level you used). That is the big noise you heard. If you still have output from the amp then your lucky. What you will want to do is feed the sound card into the same inputs as the TV Tape or other external unit. You will need an input selector switch to prevent any signal problems.
--
Steve W.
Near Cooperstown, New York
Life is not like a box of chocolates
it's more like a jar of jalapenos-
what you do today could burn your ass tomorrow!
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