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connect two turntables to one receiver?

I know some of you do not like vintage, but there are some integrated amps that have more than one phono inputs. I'm not sure about all Kenwoods, but the KA-9100 has two phono inputs and both are for MM. However, the Onkyo A-10 has two phono inputs, one for MM and one for MC.

If you are wanting to run more than one turntable, this would be the most viable option. :music:
 
KRab said:
I just got the TCC Phono switch box......connecting the ground cable from my Micro Seiki TT to the lug on back of the box eliminated the hum that I've been battling from day one....connecting the other TT (Technics SL3300) reintroduced it.....This is a passive switch box, and one must remember to lower the volume before using the box to switch TTs....
Still a project in progress....

KJR
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You may be creating a ground loop by what you describe. ? If the switch box has a ground lug that you are using then it too needs to connect to your receiver/amp.

You should directly connect the ground wire of each turntable to the ground lug on your receiver/ amp. They can, and should, share the same ground point. If one of the tables has a hum that problem is within the table and not related to using two tables.

If your table hums first check the cartridge connections. Make sure they are clean and snug. If it still persists open up the table and verify the ground wire is actually connected to the proper ground point in the turntable.
 
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When the TT (either one) is connected to the ground on the phono preamp, the hum is much more pronounced. Tried to connect both to the same ground point....which reintroduced the hum. For grins I tried grounding the switch box to the preamp while both TTs were grounded to the switch box.....no difference....I know there is a GF loop in the system.....and until such time as I can get it traced down (ha!) connecting (and grounding) the one TT to the switch has reduced the hum greatly....
 
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If I had, say, a Marantz 1030, or another unit with a "MIC" input, could I use the Mic input for a TT with an external phono stage? Or is the Mic input wired differently than a tape or aux in?
 
bobins08 said:
Cheapest yes but I would avoid this. I guess it works but you are putting another complex load from the other tables cartridge in parallel with the phono stage. The loading for either cartridge may be undesirable in this configuration
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Yes !! It would have undesirable loading effects on both the receiver`s phono preamp and cartridge`s and probably add hum and I`m pretty sure to do so would throw off the phono stages RIAA curve and sound pretty crappy.
 
FWIW

I tried the Y splitter to single phono input, even to these old ears there was a significant loss of audio level and quality.
I have used a switch unit made for video stuff (using the audio inputs only) with no loss of quality I could hear, both turntables grounded at the Amp'.
I now possess a pre-amp with two MM phono inputs, heaven.
 
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