Recent content by lexicon

  1. L

    REW Alignment tool - Guides or Manual?

    What equipment are you using? Doesn’t matter which speaker you use as the timing ref as long as you use the same one for all. I use 1.8.
  2. L

    REW Alignment tool - Guides or Manual?

    Tricky to get your head around this concept I agree. Delays in ms work conversely to distance in metres or feet. 1ms delay does not quite equate to 1ft closer in distance (speed of sound related) but it’s close enough - 88.5ms = 100ft. By decreasing sub distance the receiver will see the sub as...
  3. L

    REW EQ Filter creation and export issue

    Thanks John - it's all a big learning curve - I'll have another go. As regards the settings it's more a case of me leaving anything I don't understand what effect it will result in as default. Many thanks for the explanations - that will help me cut down the trial and error. Jon
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    REW EQ Filter creation and export issue

    Thanks you for the response John - I have not used this function before so please bear with me while I try to understand the context of what the EQ function is doing. The mesaurement I was using (I think!) is attached which was an average of L&R mains using trace arithmetic A+B/2. I took full...
  5. L

    REW EQ Filter creation and export issue

    Hi I have just started using the REW EQ function to create manual EQ filters to export into my Storm processor. The problem I am encountering is that having set a slope down from say 300hz, the highest filter it creates is 6980k meaning that the final slope down to say -X db or more at 20k is...
  6. L

    REW Alignment tool - Guides or Manual?

    Sounds good. But I think if you change any delay post dirac you are likely to find that the work it has done on the EQ is compromised to some degree. I’d take nice tight powerful bass over a perfect flat Eq though to be honest.
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    REW Alignment tool - Guides or Manual?

    Many thanks - very interesting indeed. I have tried adjusting the sub delays post dirac using my old favourite delay between sub1 and mains and maintaining a 16ms delay beween sub 1 and 2. To my ears the bass sounds much "tighter" and the soundfield clearer but of course the ideal target flat...
  8. L

    REW Alignment tool - Guides or Manual?

    Thank you again for your help with this. Ok - so I am reading that we cannot rely on the impulse graphs to tell us anything useful here so duly discounted. " Automated setup programs in AVRs or other software programs are common and normally provide favorable XO timing result along with XO...
  9. L

    REW Alignment tool - Guides or Manual?

    From what I understand from this - https://www.soundoctor.com/whitepapers/subs.htm as regards sub/sat and sub/sub integration, getting the impulse timing correct is vital. I (and many others) have been following the advice in this white paper as regards ports and timings and it seems to make a...
  10. L

    REW Alignment tool - Guides or Manual?

    Ok many thanks - so with the attached what am I looking for to get great timing? What makes this better or worse?!
  11. L

    REW Alignment tool - Guides or Manual?

    Do you know anything about reading the impulse graphs? If I take REW readings of both subs on their own with a TR, then average them together using Trace Arithmetic in ALL SPL and then change the tab to impulse and select the average trace, will it give me the combined impulse response of both subs?
  12. L

    REW Alignment tool - Guides or Manual?

    1. 40hz V 60hz Xover after Dirac Bass Control (both subs + both mains) 2. 1 sub stacked V 2 subs in separate locations after Dirac Bass Control (both subs + both mains) 40hz Xover sounds noticeably grippier/tighter to me. There is a boost applied to the (sealed port) JBLs from 40-100 which...
  13. L

    REW Alignment tool - Guides or Manual?

    Thank you again. My original perception with the second sub post Dirac was that the timing seemed less focused than with one (or 2 stacked) but I will persevere with it and try the other higher Xovers. But yes it looks like the subs stacked in one single location may be the way to go. I also...
  14. L

    REW Alignment tool - Guides or Manual?

    Here are the Left and Right JBLs to same timing ref (no sub set at large)
  15. L

    REW Alignment tool - Guides or Manual?

    Many thanks again - I’m just not getting my head around this delay calculation I don’t think so it’s probably easier just to ask you! One point - would the timing not sound better if they were in phase at crossover and if the crossover is set low do we need to worry about the EQ being flat up...
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