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  1. J

    New panels - yet REW thinks they're rubbish!

    I've been running the SL3s with the new panels for a few weeks now, and they do sound nice. However according to REW frequency response is complete garbage, especially from 10K onwards. we're talking over 10db down, like something is wrong with them. That's with 1/12 octave smoothing. I had a...
  2. J

    Not a glowing report

    Floyd is one of the world experts on acoustics The whole presentation is worth watching, but at 1:03:40 he throws a direct dig at a Martin Logan speaker. What model could he be alluding at?
  3. J

    panels: SL3 vs Summit

    I am at crossroads with my 20-year old SL3s. The panels are well down on high frequencies, despite washing, hoovering etc. REW graph was a wakeup call, they are down well over 10db above 15K Hz (not that I can hear that high any more lol) Replacing the panels is expensive with ML's new pricing...
  4. J

    SL3 Xover capacitors - worth changing?

    Hi guys, I've been investigating if it is worth changing any of the capacitors in my 20-year old SL3s. Xovers are of the late type: I don't want to be changing things that don't need changing, but I want to be sure that I'm not losing high frequency performance because of ageing electrolytic...
  5. J

    Feedback Destroyer -> logans. Madness?

    If someone were to suggest a few weeks back that I could use 'PA' sort of equipment to feed the logans I'd laugh at their face. Loudly :ROFL: But hey, life is full of surpsises I've recently got a Behringer 'Feedback Destroyer' FBQ2496 to control the room modes that can't really be absorbed...
  6. J

    REW software for measurements (waterfall etc)

    Has anyone used this little beauty? After spending some time with it, I have to say it is marvelous.:D 1. The software is FREE and works flawlessly from an XP laptop 2. The peripheral bits needed are likely to be found hanging about in an enthusiast's home - RCA cables, adaptors, RatShack...
  7. J

    panel polarity reversed for nearfield listening?

    Stereophile have now put their Sequel review on the web: http://stereophile.com/floorloudspeakers/889mlseq/index.html It is an interesting observation in the very last page, where the sound is better in nearfield conditions with the panel polarity reversed, while in larger rooms it is better...
  8. J

    Rear dispersion pattern?

    We all know that the front dispersion angle of the ML panels is 30 degrees sideways, right? But do we know what it is at the back? Is it a mirror reflection of the front (30 degrees outwards) or an 'extension' of the front? In this case it would be concave, with a distinct focal point, wouldn't...
  9. J

    Open door -- the ultimate bass trap?

    Suppose you have a door in a corner (along with the floor, we've got three surfaces meeting). If there was no door, that would have been a very good location for a bass trap. But if that door is open (I actually had it removed when I moved in the house and don't intend to replace it) is it not...
  10. J

    80db + 78db = 85db WTF?

    I'm a bit perplexed about this one. Martin logan pair playing on it's own registers 80db at the listening position. Musical Fidelity pair playing on it's own registers 78db (on purpose, so it feels like all of the sound is coming from the Logans) Both pairs playing together register 85db. Why...
  11. J

    First among equals: order of importance of the audio chain links

    There are bound to be different (and strong!) opinions on this subject, but that's the whole point isn't it?;) Yes, a chain is only as strong as the weakest link. But IF you had to list the links by order of importance, what would that be? Some people swear that the speakers are the most...
  12. J

    Biamping: how much do the woofers really need?

    I've been running my SL3s with the Musical fidelity XA-200 monoblocks and they were fine. Then I decided to biamp them, and I used the XA-100 for the woofers. It delivers 200watts per channel at 4Ohms, and I thought that would be more than enough. After all they are just 10inch drivers with a...
  13. J

    MLs lose 3db while point sources lose 6db per doubling of distance

    I recently came across this thread, but I've heard this theory before. It does feel right, but do we have any hard evidence? I've always paired my SL3s with other 'helper' speakers and have some supportive empirical evidence with the dbmeter. Discuss:D
  14. J

    The benefits of two subs

    Just a quick note to stress how good two subs can be:bowdown: My room is relatively small, and theoretically the SL3s shouldn't need much help. In reality there are a couple of nasty room nodes ( let's say at 40 and 80Hz) that spoil the fun. With the bass settings at -3db things get a bit...
  15. J

    System #183 (SL3)

    Name: John Alan Location: Kent, England ML model: SL3 Purchased: Jan 2007 Modifications: None (yet) Associated electronics: Source: Rega Planet / Musical Fidelity A34 DAC Pre-amp: Musical Fidelity A3 CR Power amp (panels): Musical Fidelity XA-200 monoblocs Power amp (woofers): Musical...
  16. J

    Stuck a pair of my old speakers next to the MLs. Heretic?

    Who cares if it is not a purist approach, it works! I was disappointed from day one because the SL3s wouldn't 'rock' Despite biamping, spikes, concrete slabs, tow and tilt, they still sucked at rock. Adjustments for flat response, two subs augmenting a bit, nothing. Muchos suckos. Now...
  17. J

    Bi-amping SL3s with XA-50 and XA-200

    Ah, it's never straightforward, is it?:haha1: I've got four Musical Fidelity monoblocs available for the task. two XA-50s and two XA-200s. They all have the same (30db) gain so biamping should be feasible. If these were ordinary speakers, it would have been a no-brainer: XA-200s for the...
  18. J

    Taking panels off SL3s

    Hi there fellow enthusiasts. I've just got a pair of SL3s in my living room, replacing two pairs of extremely efficient 'box' speakers (Kelly KT2) at the front. The result is a mixed bag, but I'm not giving up so early:D I've got tow-in, tilt and acoustic interventions still to try. They are...
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