Subwoofer/Receiver Problem

[AV Newbie]

Hi Friends
I have just connected my new Pioneer VSX-D512 receiver to new Richter Precious Metal sub/sat speakers. I have used a good quality single RCA to RCA to connect the sub to the receiver. The volume control on the sub is set to 25% of max. My problem is that whenever I switch inputs or sound effects on the receiver it sends an annoying sound (feedback?) to the sub. Ditto when I switch the receiver and DVD player on or off.
I would appreciate any advice from the forum.
Many thanks.

[Roger T. Ward]

Mustn't have been that good a cable if your getting the feedback. Most
"emergency cables" only use copper for shielding, problem is they also
conduct noise. I had the same problem originally on my Yammy amp. Got myself
a monster sub cable, problem fixed because they use proper quad shielding.
Sure it's expensive but no problems since and i get wonderful sub response
and no hummm.

Sure there will be knockers who say expensive cables don't make a
difference, but I beleive they do, I upgraded my whole system right down the
the speaker wire and am getting excellent performnce out of my gear. It's
all a matter of preference and money though.

But you definately need to get a better cable.


"AV Newbie" <AV.Newbie.xs6pm@no-mx.forums.eyo.com.au> wrote in message
news:AV.Newbie.xs6pm@no-mx.forums.eyo.com.au...
>
> Hi Friends
> I have just connected my new Pioneer VSX-D512 receiver to new Richter
> Precious Metal sub/sat speakers. I have used a good quality single RCA
> to RCA to connect the sub to the receiver. The volume control on the
> sub is set to 25% of max. My problem is that whenever I switch inputs
> or sound effects on the receiver it sends an annoying sound (feedback?)
> to the sub. Ditto when I switch the receiver and DVD player on or off.
> I would appreciate any advice from the forum.
> Many thanks.
>
>
> --
> AV Newbie
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>

[Newsy]

"AV Newbie" <AV.Newbie.xs6pm@no-mx.forums.eyo.com.au> wrote in message
news:AV.Newbie.xs6pm@no-mx.forums.eyo.com.au...
>
> Hi Friends
> I have just connected my new Pioneer VSX-D512 receiver to new Richter
> Precious Metal sub/sat speakers. I have used a good quality single RCA
> to RCA to connect the sub to the receiver. The volume control on the
> sub is set to 25% of max. My problem is that whenever I switch inputs
> or sound effects on the receiver it sends an annoying sound (feedback?)
> to the sub. Ditto when I switch the receiver and DVD player on or off.
> I would appreciate any advice from the forum.
> Many thanks.

It won't be feedback.
The cable is not at fault.
Possibly the amp is sending out a switching transient when you do what you
do.
What is the sound like - a short thump?

Rod
>
>
> --
> AV Newbie
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[AV Newbie]

Thanks Guys
In reply to your question Newsy, yes I would describe the sound as a short thump. A Pioneer tech advised that the problem could be caused by different 240V plugs (earthed and unearthed) on the components of the system causing some sort of a loop. On his recommendation I bought a ground loop isolator (RCA input & output) from Dick Smith Electronics. It got rid of the thump but introduced a loud hum through the sub! Is there any relatively simple way I can determine if it is the sub or receiver at fault?

[Gronk221]

I got a similar problem with a f*#king ground loop in house. I put in a 2nd
zone in another part of the house to work in with my multizone H/K and
Pioneer 300+1. All I get is a loud hum over the faint music. I also tried a
passive ground loop isolator with no luck. The frustrating thing is that the
hum only occurs with some gear connected at zone 2 and not others.
Grrrrrrrr.

------------------------------


"AV Newbie" <AV.Newbie.xtylv@no-mx.forums.eyo.com.au> wrote in message
news:AV.Newbie.xtylv@no-mx.forums.eyo.com.au...
>
> Thanks Guys
> In reply to your question Newsy, yes I would describe the sound as a
> short thump. A Pioneer tech advised that the problem could be caused by
> different 240V plugs (earthed and unearthed) on the components of the
> system causing some sort of a loop. On his recommendation I bought a
> ground loop isolator (RCA input & output) from Dick Smith Electronics.
> It got rid of the thump but introduced a loud hum through the sub! Is
> there any relatively simple way I can determine if it is the sub or
> receiver at fault?
>
>
> --
> AV Newbie
> ------------------------------------------------------------------------
> AV Newbie's Profile:
http://forums.eyo.com.au/member.php?action=getinfo&userid=8094
> View this thread: http://forums.eyo.com.au/showthread.php?threadid=31697
>

[Smickyb]

Hey guys,

Try the loop back.... All you really need to do is run a small single wire cable, from one of the screws on the back of the amp, to the back of one of the screws on the back of the sub.... You might even find that there is a arrow, or in your manuals it might say the best place to do such a connection... With my Yamaha RXV3300 and YSTSW800 I dont have this problem but I run the cable just incase... Yo umight find that when running it in a RCA cable or alonge side an RCA, it may infact cause other feedback, which is what it sounds like it might be doing.... If you speak to someone at Jaycar, or D1(k Smith they will be able to point you in the right direction....

It shoule only cost you all up about 10-15$ to do this..... All you will need is a roll of cable with a single core, and 2x 'U' lugs.... ;-)

See how you go..... But if you are unsure, please get someone else to do this for you..... ;-)

Its not a bad idea to use power filters at the power point either.... ;-)

KR- Smickyb!
micky_b_@hotmail.com