BeoWorld North America

Re: Connecting BeoLab 8000

tournedos — Tue, 27 Sep 2011 02:53:45 GMT

In many Kikinoko flat TVs, the audio amps have been implemented with some IC probably selected mainly for power efficiency and work in class D or S (technically a bit like ICEpower, only crappier ). Depending on the output circuitry, they may show a high impedance when powered off, and the cables connected to your Beolabs start to work like antennas, collecting all kind of noise and power line hum. That might be enough to make them think they are being fed with a signal, and stay on.

I would try adding a resistor to emulate a speaker load at the TV end of the cabling, so they aren't left dangling in thin air so to speak when the TV is powered off and essentially disconnected from them.

But I still wonder about the signal levels, if you are indeed connecting to outputs that are supposed to drive passive speakers. Theoretically it should be too much for the Beolabs.

Re: Connecting BeoLab 8000

Søren Mexico — Mon, 26 Sep 2011 22:22:20 GMT

misteUS:
Any suggestions on how to eliminate the noise when the TV is off so the speakers turn off?

Use shielded cables where the negative (ground) wire is the shield, I had the same problem and the speakers never turned of, and gave a humming noice, when I turned of my amp. When the amp is on and there is no sound to the speakers, there is no noice, and they turn on and of like they are supposed to, so something is happening when the amp (TV) is turned of.

Re: Connecting BeoLab 8000

misteUS — Mon, 26 Sep 2011 16:28:08 GMT

waynem:

Thanks for the reply. I studied it enough that I was confortable with conncting one of the speakers to the TV output. It worked fine. The volume control on the TV controlled the volume of the speakers very well. My only problem now is that when the TV is turned off, there seems to be enough of a signal or feedback such that the speakers do not realize they should turn off after the 30 seconds to a minute that they wait.

I took a very cheap RCA cable and cut off one end to expose the bare positive and negative wires. I'm willing to use better wires for the permanent solution. Any suggestions on how to eliminate the noise when the TV is off so the speakers turn off?

The speakers don't turn off instantly in the absence of signal . They stay on for up to 3 minutes . The maximum I have observed and eventually turn off. Once a signal is re-applied they do turn on.

There are various solution to eliminate this completely but they are more involved/complex.

Lesly

Re: Connecting BeoLab 8000

waynem — Sat, 21 May 2011 14:40:47 GMT

Thanks for the reply. I studied it enough that I was confortable with conncting one of the speakers to the TV output. It worked fine. The volume control on the TV controlled the volume of the speakers very well. My only problem now is that when the TV is turned off, there seems to be enough of a signal or feedback such that the speakers do not realize they should turn off after the 30 seconds to a minute that they wait.

I took a very cheap RCA cable and cut off one end to expose the bare positive and negative wires. I'm willing to use better wires for the permanent solution. Any suggestions on how to eliminate the noise when the TV is off so the speakers turn off?

Re: Connecting BeoLab 8000

Evan — Mon, 09 May 2011 08:57:23 GMT

If the jacks on the terminals are meant for regular stranded speaker wire, it will not work directly.

Does the Tv have pre-amplifier outputs? If so, those are what you should connect your BeoLabs to.

If that is not the case (no pre-outs), then you will need to source some attenuating cables that will bring the amplified level from the tv down to line level.

Re: Connecting BeoLab 8000

waynem — Sun, 08 May 2011 17:14:11 GMT

I've read this thread and it almost answers my question. I am trying to do the same thing. I have a Fujitsu TV with positive/negative speaker outputs for both left and right speakers. How do I connect these to my two BeoLab 8000 Line In connections?

Re: Connecting BeoLab 8000

mani6264 — Thu, 20 Mar 2008 19:56:37 GMT

Excellent! I appreciate the help. Thanks.

Re: Connecting BeoLab 8000

Goldfrog88 — Thu, 20 Mar 2008 16:10:00 GMT

Mani, it does. There's probably opportunity to switch from fixed to variable output via the set-up menus in your TV.

Re: Connecting BeoLab 8000

mani6264 — Thu, 20 Mar 2008 11:23:03 GMT

:I didn't realize that line level means the volume stays at one level. Of course, I am looking for variable output. The audio out in my TV says:

Audio Out (Variable/Fixed): 1 (Rear) Component Video (Y/Pb/Pr ) Input(s): 2 (Rear)

Does this mean I have variable out? Thanks much.

Re: Connecting BeoLab 8000

TripEnglish — Thu, 20 Mar 2008 08:52:25 GMT

Just to clarify, it's the variable audio output you're looking for. Most RCA outputs are line level, meaning the speakers would come on and stay on at one volume (usually a very loud one). You simply need RCA outputs with variable volume, which are only on some televisions, while many AV receivers have them. Enjoy!

Re: Connecting BeoLab 8000

Goldfrog88 — Fri, 14 Mar 2008 15:41:21 GMT

Hi Mani,

You obviously have a very recent TV, so the pre-amp issue will be a dead one. Just plug the audio outs (one L and one R) into your BL 8000s (checking L as left when watching in front of the screen). You'll love the sound. As soon as the speaker detects a signal, it turns on. I understand you'd need several minutes of silence before the speaker turns off.

Cheers!

Re: Connecting BeoLab 8000

mani6264 — Fri, 14 Mar 2008 14:39:18 GMT

Please pardon my ignorance. The TV has the following I/O. I don't see anything labeled pre-amp out. Does this mean I need an external pre-amp? Thanks.

Inputs/Outputs:

Analog Audio Input(s): 5 (1 Side/4 Rear)

Audio Out (Variable/Fixed): 1 (Rear) Component Video (Y/Pb/Pr ) Input(s): 2 (Rear)

Composite Video Input(s): 3 (2 Rear/1 Side)

Digital Audio Output(s): 1 (Rear)

S-Video Input(s): 1 (Rear)

Headphone Output(s): 1 (Side)

PC Audio Input(s): 1 (Rear)

PC Video Input(s): 1 (Rear) D-Sub 154

HDMI™ Connection(s): 3 (1 Side/ 2 Rear) - 1 rear input has L/R audio inputs

1080/24p Input Capable via HDMI™

Re: Connecting BeoLab 8000

Peter — Fri, 14 Mar 2008 13:47:02 GMT

Depends on your TV. If it has pre-amp out connections, phono connections are fine.

Re: Connecting BeoLab 8000

mani6264 — Fri, 14 Mar 2008 13:02:43 GMT

I appreciate the answers. I am planning to get just 2 8000s as the front speakers, so I guess it solves the power problem. Do I need any kind of pre-amp/receiver to connect them to the TV, or can I just connect them directly to the TV using phono connections? Thanks much.

-Mani

Re: Connecting BeoLab 8000

Russ — Fri, 14 Mar 2008 11:33:14 GMT

Mani, as long as you are connecting them to a variable-output phono/RCA line-level connection from your TV you will have no real problems. The BL-8000 has phono/RCA sockets right next to the normal PowerLink. Have at!

Russ