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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I recently obtained a Beolab 7.1 in excellent condition for use with a 6 year old Sharp LCD TV. I've connected them together using a powered trigger kit from Sounds Heavenly through the headphone jack, but I'm encountering a significant problem: When the TV is turned on/off there are two massive 'Pops' from each end of the speaker-bar, and whilst the TV is running there is a low level hum and background white noise.
I've corresponded with Steve at Sounds Heavenly about this, and can confirm there's nothing wrong with the trigger kit. I believe the TV headphone jack is probably the culprit, as I understand these can be 'dirty'. I appreciate the the TV is quite a cheap one, so unfortunately this also means there is only a limited number of other connection options - SCART, CoAx/spdif, or the headphone socket. .
I've also read in previous threads that other devices such as an Apple TV etc. can affect this speaker this way, but even turning off this and a nearby DVD player has no effect. The hum/static is only noticeable at low volumes, but I'm seriously concerned about the loud popping when turning on/off, as I fear the speaker will become damaged at some point.
So, does anyone have a solution? The obvious answer might be to buy a new TV, but I'm living here only temporarily and don't want to buy a new one until I make a permanent move - and also perhaps until the new BV's arrive. I do have a BV7-32 and BV7-40 in storage 250 miles away, but I really don't want to have the expense and inconvenience of moving one of these because of this if I can help it.
Thanks in advance for your assistance...
If you connect an iPhone, Mp3 player etc to the headphone jack of the powered trigger, do you still get the hum and crack?
The short answer is No!
Steve at Sounds Heavenly suggested this; from my iPhone I can play music via iTunes with no hum/static or anything else; the speaker sounds surprisingly good with this as the source incidentally. Only when I pull out the jack do I get static/hum from touching the body of the jack.
Not much you can do about that, I think!
One thing to try - if you could get hold on one - is the B&O Playmaker.
You could use the line-in of that for the tv (and would have airplay for your iPhone as well).
No trigger needed for connecting the speaker.
No guarantee, but (maybe) worth trying.
Maybe someone else has a better idea?
MM
There is a tv - and there is a BV
Thanks for the idea MM,
Unfortunately my Playmaker is also in storage 250 miles away...!
I think there might be a 'line-filter' available for 3.5mm jacks, but I don't know if these work - I wonder if anyone has any experience of using these?
Forget the filter idea!
You have an impedance mismatch, the TV jack is expecting too see a low impedance, and you hooked up to a high impedance input.
Ahh - so no point buying a filter... Would this be the same for any non B&O TV then?
I think I used to have a SCART TO RCA adaptor somewhere, and I have a 3.5mm jack to RCA adaptor; that's a lot of adaptors to put between the TV and the speaker, but any thoughts on whether that could work?
I'm having the exact same problem - except my TV has 2 RCA audio outs, which, if used, just give me the same hum but even louder than when I use the headphone jack.
Since the hum doesn't increase when the volume on the TV is increased, I'm thinking the only option is to get an amp, plug that into the audio output of the TV, turn the volume on the amp all the way down and then turn up the volume on the TV all the way up to compensate thus removing the hum.
any suggestions? This seems a ridiculous thing to have to do...
Beocat47:
I think I have a good solution for you.
This week I installed a Beolab 7.2 at my parents home. It works great. I never heard a speaker playing so clear and powerfull as this one!!!We are even thinking of removing his Beolab 3's, because the 7.2 is performing (as a stereo speaker) 300% better, compared to the Beolab 3's that where directly connected to his non-b&o tv...
The headphone output is AWFULL on tv's.
Your solution (because you want to control the beolab 7.1 volume with your non-b&o tv-remote) is a HDMI ARC to Analog RCA converter!Most hdmi tv's send their internal sound through the hdmi1 port, this is called the Audio Return Channel.AV-Receivers use ARC to play all sounds, coming from the tv, over their (surround setup) speakers.If you buy the mentioned converter, you can connect your Beolab 7.1 directly to this converter (with the triggering kit).The dac in these converters is better than the headphone jack output and without hum..It is designed to extract the audio signal from any ARC (Audio Return Channel) enabled HDTV and convert it to a line-level analogue stereo signal. This device is perfect for use with HDTV's with no dedicated audio output allowing the audio to be extracted from the ARC enabled HDMI connection and sent to a non-HDMI equipped amplifier, AVR, or active speakers. It supports HDMI audio sampling rates up to 192 kHz and provides an analogue 2-channel stereo output using the integrated DAC (Digital to Analogue Converter).
Here is a direct link to the product above:
http://www.cypeurope.com/store/store/app/product/AU-1HARC/HDMI-to-Stereo-Audio-2-Phono-ARC-extractor-
Just for your info :-)
BeoSound 9000 MK3, BeoLab 8000, BeoLab 6000, BeoLab 3500, LCS9000, BeoLab 11, BeoLab 7.2, BeoLab 7.1, Beolab 4 PC, BeoCenter 2300, BeoSound Century, BeoSound 8, Beosound 2, BeoVision 7-40 MK2 , BeoVision 7-32 MK3, BeoVision 6-22, BeoVision 4-42, BeoMedia 1, BeoCom 4, BeoLink 1000, BeoLink 5, BeoLink 4 & BeoTime
Thank you for your suggestion Tuttivini, and for the information BeoIce,
This looks like exactly the item I need. I've continued to use the BL 7.1 for the last few months and I'm completely happy with it - but turning it on and off has remained a nightmare; massive bangs and pops which I'm sure must really disturb my neighbours!
This should be helpful for DaveClose too, and others. I'll order one, and let you know how it works out for me.
tuttivini: Beocat47: I think I have a good solution for you.. and convert it to a line-level analogue stereo signal.
I think I have a good solution for you..
and convert it to a line-level analogue stereo signal.
If the output is a line-level signal, how can you control the volume of BL7-x?
Millemissen: tuttivini: Beocat47: I think I have a good solution for you.. and convert it to a line-level analogue stereo signal. If the output is a line-level signal, how can you control the volume of BL7-x? MM
Hmmm indeed. It's not usable with a fixed volume output. Maybe this specific model is line level and you also have the with adjustable tv volume. I will look for it. The example I have (the picture) is also a very expensive one. You can find these converters on aliexpress for under 20 euros.
Don't buy this converter yet!
I will look for a volume changeable model.
Don't worry Tuttivini- I haven't ordered one yet!
I had a look around and noted the following item on Am*zon.co.uk, which looks similar for about half the price of the CYP one:
Neet® - HDMI Audio Converter / Extractor - HD Digital Optical TOSlink / Coaxial / Analogue Stereo - Full HDMI pass through - 3D - ARC
I was hoping the TV volume control would operate through this, but I'd appreciate a second opinion in light of Millemissen's comment, as I'm not technical enough to know.
Any update on result, I am thinking to buy one ?
I use samsung tv with HDMI Arc and Beolab 7.1
Hi Kyashars,
As the OP, sorry I can't add much further - I never found a satisfactory solution to using it with a non-B&O TV, and ended up just putting up with the crazy noises! I've recently emigrated from Scotland to Australia so the Beolab 7.1 should shortly be united with a BV 7-32 once my container arrives, so hopefully that will solve the problem.
I wish you luck in finding a good solution for yourself though!