rotel rc 1070 ,feedback noise

Neale13
Neale13 Posts: 88
edited December 2009 in Basic Hookup/Wiring Questions
i have a rotel rc-1070 pre amp. when i try to hook up my audio out from cable box or tv to my pre amp all i get is static/humm .Why ? Is it not designed to play this audio ? I new to this. Thanks:confused::confused: Oh I have a rotel 1080 amp if it matters.
Post edited by Neale13 on
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  • steveinaz
    steveinaz Posts: 19,538
    edited December 2009
    Here's some possibilities:

    bad cable
    correct output jacks (on the cable box) and input jacks (on the Rotel?)
    bad output on the cable box
    bad input on the Rotel (try a different line-level input)
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Shop Spkrs: Elac Debut 2.0 B5.2
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  • CoolJazz
    CoolJazz Posts: 570
    edited December 2009
    Another possibility is a very different ground potential coming from the cable box. If so, then isolation of the cable line with a transformer is a good answer. Or, transformer the audio line side to break the ground.

    Cooljazz
    A so called science type proudly says... "I do realize that I would fool myself all the time, about listening conclusions and many other observations, if I did listen before buying. That’s why I don’t, I bought all of my current gear based on technical parameters alone, such as specs and measurements."

    More amazing Internet Science Pink Panther wisdom..."My DAC has since been upgraded from Mark Levinson to Topping."
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