Question about Yamaha RX-Z9 Receiver

1 Answer

Major hummimng noise when sub is connected to receiver.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 8,546 Answers

Is the hum in the receiver-attached speakers or the sub?


Self-powered sub?


How is the sub attached - RCA or speaker-level?


Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.


If it hums with the sub attached, unplug the sub's power cord. Differences in AC ground potentials will generate hum across linked devices.

Posted on Mar 25, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Why is there low humming in the receiver sub channel(only?)


Sounds like a shorted capacitor in the sub out circuit.

May 04, 2015 | RCA Audio Players & Recorders

1 Answer

My sub hoover cant play but just making some noise


You need to be much more clear, and provide a lot more detail if you want help on this issue.
What brand/make/model sub woofer? is it a powered or passive sub? what is it hooked up to? how is it connected? what is the audio source? what sound is it making?
Please be specific in all details.

Feb 21, 2011 | Audio Players & Recorders

1 Answer

I have a JBL TLX CSS-SUB1 sub at the back are where you connect the speaker wires to the receiver but i don't know witch wire goes in what? i have no clue


The connection on the receiver would be the sub woofer out. Not a sub woofer out LFE, a sub woofer out with speaker wire connection. From there you plug it in to the top section of the available terminals on the sub you are referring to (speaker level input). One in positive and the other in negative matching what you did on the receiver with correct ends. The speaker connections underneath the top connections is for additional speakers like surrounds to be able to be connected directly to the sub woofer speaker level out for sound. This of course would be for an older receiver connection. I do not think it is possible to convert this connection to an LFE and have it work properly. If the receiver does not have sub woofer speaker connection and only a RCA out then you can try to connect both rear speaker connections from the receiver to the speaker level inputs on the sub and then connect your rear speakers to the speaker level output on the sub to power them. This is an active sub woofer but for some reason they made it connect as if it was passive. I am not sure if this sub is designed for really low frequencies required for movie or if it is better for music.

Nov 01, 2010 | JBL Audio Players & Recorders

1 Answer

RX-V995 Earthing issue


your main lead wire contains only two core, could be brown, black, anyway..open the cover of the unit, and change the cord, get three core main wire, and take the old one off, replace the other one, which should have earth, you can screw it to the transfomer base, try this

Nov 09, 2009 | Yamaha RX-V995 Receiver

1 Answer

Connecting 2 sub woofers to denon 1506 receiver


Most receivers only handle one sub at a time. If you are deadset on connecting two, you might want to consider how much power your receiver will give to each if you split the signal then determine the power of each sub. If the subs aren't the same you can be sure they will sound strange.

If they are identical and your receiver has enough power to handle them both, examine the connection the subs use to connect to the receiver and split the connection by buying a splitter at a local radioshack.

You will probably be better off using the better of the two subs instead of having both connected. Your sound quality will be more balanced and clear when it comes to bass.

Mar 03, 2009 | Denon AVR-1506 Receiver

1 Answer

Velodyne sub noise



Sounds like a bad amplifier.

One of the input caps on the power side is my guess

best bet is to contact Velodyne for a repair or replacment

Dec 30, 2008 | Audio Players & Recorders

1 Answer

Sub woofer


Hello,
The subwoofer is totally independent from your Pioneer VSX-D412. You can check if it works like you did with a finger on the hot point of the RCA cable (not very good test, as you will hear noise and can't say if that means it works OK) or better connect a known receiver to the speaker connections in the sub and test to see if it’s working properly.
Regarding the receiver, you may not have enabled the VSX to output to the sub. Read the manual on how to check for that. Only Dolby Digital 5.1 signals will allow the sub out, in a receiver of this level. It normally will not let you use the sub in stereo mode. Some more complex units will allow you that, but I believe not this model.
Good luck

Nov 01, 2008 | Pioneer VSX-D412 Receiver

2 Answers

Sunfire Subwoofer 110 Noise on input plugin


A few more questions-
Does the sub hum without anything plugged into it except for power? If it makes a real loud hum almost a squeal then I think the rca cable between the receiver and the sub is dead shorted and needs to be replaced. If it's more of a low level hum, then it's a ground hum caused by many things, ie........the receiver and the sub being on different power circuits in the house.......sometimes diconnecting the cable tv feed as it enters the room while the sub is connected and humming to see if it stops........the easy fix sometimes is using a 3 to 2 prong ac adapter but lifting the ground on such a powerful amp could be a fire hazard.

Sep 25, 2008 | Sunfire True Sub MK II Subwoofer

Not finding what you are looking for?
Yamaha RX-Z9 Receiver Logo

243 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5190 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

74482 Answers

Are you a Yamaha Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...