Search results

  1. D

    Need Help w Subs in a Large room

    Don't say that, until you seen @sigbergaudio Inkognitos. Uses the same/similar good quality driver as previously mentioned XLS (Scan-Speak Discovery?). Also they have the necessary DSP functionality to high-pass your mains and get the modal region under control. You will have massive spatial...
  2. D

    Need Help w Subs in a Large room

    =SVS SB2000 = Linkwitz Thor (https://www.linkwitzlab.com/thor-intro.htm). Peerless XLS is a known quality driver. Pair it with a decent box and amp and you have proper sub within its output limits. Low Le variation, good, clean response at the high frequencies, can be crossed anywhere up to...
  3. D

    Need Help w Subs in a Large room

    go pick up locally a BKELEC Peerless XLS based sub. Add multiples, if more output and smoother modal response is needed.
  4. D

    Arylic BP50 Preamp with HDMI ARC Review

    Hi - if you go to 'Parametric Equalizer Plot' tab, there is possible to change 'Fc', 'Gain', 'Q' and 'Type'. Type can be either hi/lo shelf, high/lowpass or PK. Can you apply a highpass to main speakers in this tab? Should be 1Hz increments. Also how does the sub channel 'PEQ' tab differ from...
  5. D

    Arylic BP50 Preamp with HDMI ARC Review

    Thankfully @amirm you uncovered 'couple' bugs, but as you mentioned the underlying 'performance' is capped by the MVSilicon BP1048b2 chip - ~83dB SINAD, >0.007% THD+N. That is actually better than the NAD T758 and all the vinyl systems out there. Concerning is the response from sub-out. Can...
  6. D

    Why do passive speakers still exist?

    Not only. Crucially for delay-sensitive applications a lin-phase crossover could mean trouble. So a min-phase (IIR/FIR/analog) crossover is combined with an analytic FIR phase compensation, that can be toggled on-off. No meaningful drawbacks, but corrected 'transient attack' for the...
  7. D

    Why do passive speakers still exist?

    Now I see we are talking about different things. You are talking about radiation frequency response issues - and the rule-of-thumb to not compromise radiated power for some narrow interference/lobing effects. I am talking about analytically reversing the error of delaying the amplitude envelope...
  8. D

    Why do passive speakers still exist?

    And to add to the topic, there is also a phenomenon that dr Griesinger describes as 'attention grabbing'/'nearness'/'proxymity' that is dependant on having a linear(ish)-phase at the higher frequencies also. Not much studies, but I think Tapio Lokki (also from Aalto) could have done some...
  9. D

    Why do passive speakers still exist?

    Easy. Take a 3-way with 4th order (analog/IIR/minphaseFIR) slopes ~300Hz/3000Hz. Resulting (excess)group delay is >3ms @100Hz and no-question-about-it audible. Transient attack is not what it could be. Backed by research btw. (Will have to dig in the library for concrete studies, I think it was...
  10. D

    Lack of 2.1 support is grinding my gears

    Its the mentality of the whole industry - everyone is doing what everyone else is doing. NO innovation what-so-ever. Thankfully ASR 'nugded' some (mostly chifi) manufacturers to respect signal hygiene, that is almost 'free'. Next step would be to apply best practices in acoustics to every...
  11. D

    Let Your Voice Help Us Make an All-In-One

    That is not very useful. Active subwoofers have already 2 settings: variable low-pass filter OR wide open. So don't bother with a crude lowpass on a processor without having a highpass on the mains. Proposal: Mix L+R signal for subfoofer channel Apply variable highpass to mains. From 40Hz up...
  12. D

    Why do passive speakers still exist?

    You can safely treat a situation, where sources are <1/4wl apart, as 1d. Eg a 3-way with steep slopes between low-mid. It needs a simple phase unwrap so the resulting group-delay would be below the audibility threshold. Even with wider spacing, the arriving reflections can be mangled, but the...
  13. D

    Let Your Voice Help Us Make an All-In-One

    @Fosi Audio - I hope you understand, these 'feature requests' usually end up bloating the product, which leads to: 'spec hunting' that needlessly drives up costs without any psychoacoustical benefits. faulty implementation of said features needed core features for 'best practice' sound...
  14. D

    Why do passive speakers still exist?

    My vote goes to hybrids. Passive xo between ways, phase linearization, eq/bafflestep in dsp. Not for performance reasons, but simplicity. With actives, that houses the electronics in the speaker - the joy of retrofitting signal AND power for a multichannel install. With actives, central...
  15. D

    KEF HTS3001SE - How would you EQ these?

    Yeah, one of the nicest, small speakers around. All it takes is a little shelving above 6-7kHz and do something with the ~150-200Hz bump. Then lowpass ~120Hz. Paired with quality multisub system can get quite good, attractive small-room sound system. Subs need to have either correct inductance...
  16. D

    Seeking Advice, help, and interest for Acoustic Treatment of Pentagonal Studio Space

    Did you get anywhere with your project? If you still would like some pointers, then: clean out the room, including the desk, all the temporary absorbers, etc. map the frequency response in and around the listening position with the speakers and the mic positioned like in the below picture (yes...
  17. D

    Swissonic A305

    Correct, but. This comment needs to be in context of the size- and price-class. 3% and 10% THD in itself doesn't tell us much, electroacoustic systems are usually incapable of generating high-order distortion in their linear operating range - not enough force. Due to masking, the generated...
  18. D

    Why do passive speakers still exist?

    It only works for the single mouth reflection, that is equally delayed wrt. radiation angle. Most horns are.. not properly designed. So they have complex reflections and a resulting complex interference pattern. Easy to spot on a detailed polar map (well who publishes that?!) - resonance-like...
  19. D

    Most beautiful speakers in the world ?

    Don't be afraid. This community embraces early raw development threads/data. It certainly put @sigbergaudio on the map :) A raw, detailed horizontal polar of the planar driver in a rectangular box vs your curved one could be an excellent teaser ;) And more feedback!
  20. D

    Most beautiful speakers in the world ?

    Talk about a clean wavefront! Totally missed the slight elliptical front. That rules out a more Scandinavian-style look I thought previously. Maybe a high-gloss dark walnut veneer all around? That would look excuisite! If you can bend a large veneer at the sides. Maybe apply in 2 peaces and...
Top Bottom