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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 07-09-2011 7:16 AM by thavn. 61 replies.
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  • 06-05-2011 8:45 AM In reply to

    Re: Beolab 5 disappointed

    Yes, my measurements are consistent and repeatable. Just ran it again with same results.

    I have the mic pointing straigt up on a tripod in my normal listening position. Height like the tweeters. 

    Speakers are in option 0, Beovision 7 volume at 52, Overture audio source on cd, thus the Beolab 5s are prefering the spdif signal from the minimac.

    The only factor I change is turning one of the mains around. The overall magnitude is very different. In the other scenario the baseline is approx. -15db, so it is a much weaker signal.

    I have the FuzzMeasures on another computer, If I can edit this post from the other machine i'll insert the other scenario into this post shortly. 

    EDIT: image inserted ( two measurements with same setup overlay)

  • 06-05-2011 11:09 AM In reply to

    Re: Beolab 5 disappointed

    Sorry for my lack of technical expertise. What exactly does the graph show? I understand it is showing two different results but in general what are those results showing?

    Thanks!

    Beovision 7-55 with Beolab 7-4, 9s and 4000s

    Beovision 10-40 with Beolab 1s and 6000s

    Beosound 1, 5, 2000, and 3000

    Beotime, Beotalk, Beocoms

  • 06-05-2011 3:33 PM In reply to

    • Alex
    • Top 25 Contributor
    • Joined on 04-16-2007
    • Bath & Cardiff, UK
    • Posts 2,990
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    Re: Beolab 5 disappointed

    Hmm, a sudden drop-off below 400 Hz? This would suggest something to do with the calibration system, which I believe functions up-to around 400 Hz. Very strange!

     

    The difference in the measurements between the polarity-flipped mains is quite interesting. Not that I don't trust you, but is there any possibility you could do maybe 3 or 4 measurements of normal, then immediately flipped, and post each graph up here?

    I really don't see how this could make any difference...

     Weekly top artists:                   

  • 06-06-2011 5:04 PM In reply to

    Re: Beolab 5 disappointed

    I have an in home demo of the 5s scheduled later this month. I am very curious how they will sound.

    Beovision 7-55 with Beolab 7-4, 9s and 4000s

    Beovision 10-40 with Beolab 1s and 6000s

    Beosound 1, 5, 2000, and 3000

    Beotime, Beotalk, Beocoms

  • 06-06-2011 5:05 PM In reply to

    Re: Beolab 5 disappointed

    Did alot of testing today, flipping mains. Conclusion is clear: No effect at all.

    I have measured hundreds of sweeps in option 0 and 4 each with the four possible combinations of plugs directions. I was fooled a couple of times to believe I got a different result, but in the end of the day I was able to dismiss the odd measurements. So my measurements are very consistent, like the last graph posted.

    So in the present setup it seems I have some really nasty dips ( or "nulls" I think is the right term) below 400hz. I'm really not an expert, but I'll experiment with speaker placement tomorrow. Hopefully I can improve on the measurements with alternative speaker positions.

  • 06-07-2011 8:19 AM In reply to

    • Puncher
    • Top 10 Contributor
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    • Joined on 03-27-2007
    • Nr. Durham, NE England.
    • Posts 9,588
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    Re: Beolab 5 disappointed

    That's better!Smile

    The nulls are position dependant in the room and are set by room dimensions and surfaces. If you are going to be measuring while moving speaker position then the mic should be located at your intended listening position (as should you, ideally).

    Don't expect a flat bass response throughout your room, the best you can achieve is to minimise frequency related amplitude variations at your listening point of choice.

    Generally speaking, you aren't learning much if your lips are moving.

  • 06-22-2011 1:43 PM In reply to

    Re: Beolab 5 disappointed

    Beolab 5s coming to my house for an in home demo. Also a Beolab 2 to try with my Beolab 1s in another room. Am very eager to see how the 5s sound compared to my Beolab 9s.

    Beovision 7-55 with Beolab 7-4, 9s and 4000s

    Beovision 10-40 with Beolab 1s and 6000s

    Beosound 1, 5, 2000, and 3000

    Beotime, Beotalk, Beocoms

  • 06-24-2011 2:47 PM In reply to

    Re: Beolab 5 disappointed

    Had the 5s in my home today. I will be staying with my current 9s. The 5s sound different, but I like the 9s just as well, or perhaps better. Dealer also brought a Beolab 2 to try with my Beolab 1s. That made a huge difference and I will be considering one of those.

     

     

    Beovision 7-55 with Beolab 7-4, 9s and 4000s

    Beovision 10-40 with Beolab 1s and 6000s

    Beosound 1, 5, 2000, and 3000

    Beotime, Beotalk, Beocoms

  • 06-24-2011 7:57 PM In reply to

    • Medogsfat
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    • Joined on 02-21-2007
    • *Moderator* Leeds, Yorkshire
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    Re: Beolab 5 disappointed

    Razlaw:

    Dealer also brought a Beolab 2 to try with my Beolab 1s. That made a huge difference and I will be considering one of those.

    That doesn't surprise me at all. I find Beolab 1's remarkably bass light given thier size - Penta's (which BL1's were supposed to directly replace) outperform them easily in that area IMO.

    Chris.

    The use of metaphors should be avoided like the plague. They're like a red rag to a bull to me.

  • 06-25-2011 6:16 AM In reply to

    Re: Beolab 5 disappointed

    What i really want ( and find most objectionable) is to have a way to attenuate the mid-bass peaks that speaker placement/room configurations create. "suck - outs" as dips are called, cannot be rectifies through equalization. This should be simple for B&O to implement. And i don't want to automated, a la BL5.

    B
  • 07-07-2011 5:13 AM In reply to

    • hotknife
    • Top 150 Contributor
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    • Joined on 02-03-2008
    • Solingen/Germany
    • Posts 552
    • Bronze Member

    Re: Beolab 5 disappointed

    BL9 and you do not have such problems.

    BeoVision 8-40, ATV2, BeoSound 4, Front BeoLab 9, Rear Beolab 4000 MKII, Beo 4

  • 07-09-2011 7:16 AM In reply to

    Re: Beolab 5 disappointed

    When I first got my BL5 I too was a little bit disappointed.

     

    But I previously had a separate Subwoofer. When I changed the settings in the setup menu to "off" in the subwoofer question, they came to life!

     

     

    BV10, Avant DVD, BL5, BL4000, BS2300, BV6-26, MX 4002, 2xBeocom 6000, LC2

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