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Read the Post in new Window Read the Post in Threaded view  Post #33: Use Pando by op.9 on 2008-03-13 
Browse the content of the threads in new Window  Thread: Sansui TU-X1 Broadcast monitor. in Off Air Audio  56 Replies 
http://www.pando.com/its very well behaved.up to 1gb for free.works in the background.doesn't mess with your mind...cheers op.9...

Read the Post in new Window Read the Post in Threaded view  Post #30: Update by op.9 on 2008-03-11 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
A kind chap from the Lansing Heritige forum has identified my new driver as a 2482. Interestingly those good radian people do an replacement aluminium diaphragm for this driver.What remains to be seen is how big the advantage of the original phenolic...

Read the Post in new Window Read the Post in Threaded view  Post #29: 1st discovery by op.9 on 2008-03-11 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
Looks like it will be a long learning curve...first discovery - I've matched the levels of the jbl vs BMS accurately - and subjectively the jbl sounds 3-5db louder. and much fuller. very healthy sound too.I'm going to take this chance to listen to lo...

Read the Post in new Window Read the Post in Threaded view  Post #27: What do I have here? by op.9 on 2008-03-11 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
Romy,I took your advice and now have a single 2440 driver. At least i THINK its a 2440. On opening it i find that it has a phenolic diaphragm! Have I been sold something else? I was not aware that there were ever any phenolics for the 2440 family. Wa...

Read the Post in new Window Read the Post in Threaded view  Post #24: Compression Ratios by op.9 on 2008-02-02 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
Fascinating stuff. I'm certainly going to try to get my hands on some 2440's when I can see them for a nice price. That 18 Sound ND2060A looks very interesting to me. And would fit in with my silly philosophy of only using currently manufac...

Read the Post in new Window Read the Post in Threaded view  Post #19: Interesting by op.9 on 2008-02-01 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
Thanks. It would be interesting to try these. I heard some a while back in a rectangular tractrix and I remember being very impressed.  Has anyone had any experiance of these? james...

Read the Post in new Window Read the Post in Threaded view  Post #11: What else? by op.9 on 2008-01-30 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
good point well made. Funny, i have tried to give up coffee many times. sometimes sucsessful even for 6 months at a time. But somehow, life with coffee is just better.Anyhow, what are the 2" comp drivers that ARE any good and are available comerciall...

Read the Post in new Window Read the Post in Threaded view  Post #9: Rough by op.9 on 2008-01-30 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
The surface of my fiberglass horns is quite rough. The mould was sprayed from a distance with some water based paint - so it all landed in fine globules. Maybe this is too fine a rough texture though. I like the idea of thick artists oil paint… One ...

Read the Post in new Window Read the Post in Threaded view  Post #2: Tricky by op.9 on 2008-01-30 
Browse the content of the threads in new Window  Thread: How we "think" about audio in Playback Listening  2 Replies 
The problem I encounter is that a by its very nature, a pure audio 'it' renders itself invisable. i.e. as soon as my system can do something better - more musical - then this just gets absorbed into the listenbility and is not really an issue any mor...

Read the Post in new Window Read the Post in Threaded view  Post #1: Open cell foam in horns and MF drivers by op.9 on 2008-01-25 
Browse the content of the threads in new Window  Thread: Open cell foam in horns and MF drivers in Horn-Loaded Speakers  40 Replies 
Ok. I have some very good results to report. I've been stuffing my midrange horn (250hz lecleach with BMS4592nd-midrangeonlyversion) with some 20-hole-per-inch open cell foam. As per Mr. Geddes. Its not coming out. 1. I can now play louder with no sh...

Read the Post in new Window Read the Post in Threaded view  Post #11: It by op.9 on 2008-01-25 
Browse the content of the threads in new Window  Thread: Surprising: the most interesting composer of 20 century. in Musical Discussions  14 Replies 
Buy the way, since you discover “it” in Janacek then did you begin to be more sensitive to the similar “it” in other composers/compositions? Of course. I find when I discover a new 'it' - I then find/feel it all over the place. And as a comple...

Read the Post in new Window Read the Post in Threaded view  Post #9: I'll try.. by op.9 on 2008-01-23 
Browse the content of the threads in new Window  Thread: Surprising: the most interesting composer of 20 century. in Musical Discussions  14 Replies 
Well, I found Janacek strange and unfathomable. I was brought up on Haydn-Beethoven-Schubert-Brahms-(Mahler)-Schoenberg route... so I had no entering point for Janacek. I also loved Dvorák and Smetana... but this was no help either.. (its only now...

Read the Post in new Window Read the Post in Threaded view  Post #7: Answer.. by op.9 on 2008-01-23 
Browse the content of the threads in new Window  Thread: Surprising: the most interesting composer of 20 century. in Musical Discussions  14 Replies 
I also thought this question was kind of idiotic... until I noticed that its really been bugging me for a few weeks...what are the rules for a C20 composer? Died after 1900? If so....I've been fighting between Mahler and Janacek. I can make a waterti...

Read the Post in new Window Read the Post in Threaded view  Post #27: I meant it by op.9 on 2007-12-23 
Browse the content of the threads in new Window  Thread: Barn Conversion - James' Project in Horn-Loaded Speakers  28 Replies 
No, i really did mean a 4592nd midrange - it is a OEM version that I think I bought from assistance audio. There are various reasons I'm crossing over at 3k (more like 2500hz now) - first, the horns are 250hz and therefore too deep for high treble wi...

Read the Post in new Window Read the Post in Threaded view  Post #59: Bias confusion by op.9 on 2007-11-24 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
Romy,Could you help me understand your biasing scheme with this version? I thought I understood the original Milq circuit - but the only channel that looks like that to me is the D channel. I don't get A and B at all! what is the 50 ohm resistor doin...

Read the Post in new Window Read the Post in Threaded view  Post #14: 115hz horn construction photos by op.9 on 2007-11-02 
Browse the content of the threads in new Window  Thread: The Macondo’s Upper Bass Channel: what is next? in Horn-Loaded Speakers  30 Replies 
thought you might like to see my horn construction method - http://picasaweb.google.com/jbjbjbjbjb/115hzHornsI'm about to fibreglass them - hmmm probably not right for this thread..op.9...

Read the Post in new Window Read the Post in Threaded view  Post #13: Crispy pingy by op.9 on 2007-11-02 
Browse the content of the threads in new Window  Thread: The Macondo’s Upper Bass Channel: what is next? in Horn-Loaded Speakers  30 Replies 
I agree, there is probably very little to learn luthiers that is directly applicable. However, I've always been interested in the similarities between good speaker cones and thin lacquerd spruce. Sort of a crispy pingy sound even with just a gentle t...

Read the Post in new Window Read the Post in Threaded view  Post #11: Ooopsy back chambers by op.9 on 2007-11-02 
Browse the content of the threads in new Window  Thread: The Macondo’s Upper Bass Channel: what is next? in Horn-Loaded Speakers  30 Replies 
"It is not an accident that I liked the article about the “Resonating Oops” to this thread."Interesting. I'm just completing my 125hz midbass horns. And I'm deciding how to construct the back chamber. I think I will experiment with a removable and tu...

Read the Post in new Window Read the Post in Threaded view  Post #12: Problem? by op.9 on 2007-10-14 
Browse the content of the threads in new Window  Thread: Recording options: Pacific Microsonics vs. Lavry Gold. in Didital Things  24 Replies 
Romy, is there a problem with the DAC1 file? After 16' there is an audible click then a lowering of level and a much more bleached out sound. (Also the channels are reversed)..Maybe your could check this out..cheersop.9...

Read the Post in new Window Read the Post in Threaded view  Post #6: just a thought.. by op.9 on 2007-08-19 
Browse the content of the threads in new Window  Thread: 'Fundamental rich' listening, or is RTA even close to accura... in Audio Discussions  9 Replies 
Dan, are you using the Behringer DEQ2496 for your RTA? If so, you could be experiencing the same problem I had. Once in a while its frequency range goes doolally and shows rubbish - but not quite enough rubbish to make it obvious. (I think it read...

Read the Post in new Window Read the Post in Threaded view  Post #4: or.. by op.9 on 2007-08-12 
Browse the content of the threads in new Window  Thread: Excerpt: Beethoven Cello Sonata #4 in Musical Discussions  3 Replies 
or... Cohen and Coin - one of the most inspired cd's I've ever heard...op.9...

Read the Post in new Window Read the Post in Threaded view  Post #55: higher impedance by op.9 on 2007-06-04 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
Thanks, look forward to hearing about your results. I am tempted to make some similar experiments myself - but all I have to hand is some 17.5:1's. I think I'll give it a go anyway...opps9...

Read the Post in new Window Read the Post in Threaded view  Post #53: Turns Ratio by op.9 on 2007-06-04 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
Romy, What turns ratio did you decide on in the end for your OPTs?thanks oops.9...

Read the Post in new Window Read the Post in Threaded view  Post #2: you missed.. by op.9 on 2007-06-03 
Browse the content of the threads in new Window  Thread: Where is the real Russian music lives? in Musical Discussions  2 Replies 
Pure Russian music? You have missed out the great master Tanayev! Almost alone, he manages to combine that true Russian sound with our counterproductive western accountantcy....

Read the Post in new Window Read the Post in Threaded view  Post #50: minimum capacitate for HF channels... by op.9 on 2007-05-02 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
I chanced upon an interesting PSU arrangement for my 5842. I run a valve regulated powersupply at 210v and then drop down to 160v with an un-bypassed 8uf oilcap. Any more capacitance or bypasses seemed to be a step backwards in terms of pleasure. A n...

Read the Post in new Window Read the Post in Threaded view  Post #47: sowter mumetal impressions by op.9 on 2007-05-01 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
Like cv, I've not directly compared mumetal to amorphous in an OPT position. However, my hunch is that the sonic attributes are the same as those found at line level (I've tried various Xformers as the IV/output stage in my Rakk Dac). I now ru...

Read the Post in new Window Read the Post in Threaded view  Post #33: Sowter by op.9 on 2007-05-01 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
I use Sowter model 9550 for my treble horns. (Changing over to these was the biggest single improvement I've ever made). Brain is very good to deal with and will make anything to your specs. He has huge experiance with OPT design.Oneday I want to com...

Read the Post in new Window Read the Post in Threaded view  Post #1: Dennis Colin's Sound Strobe by op.9 on 2007-04-30 
Browse the content of the threads in new Window  Thread: Dennis Colin's Sound Strobe in Audio Discussions  1 Replies 
http://www.audioxpress.com/bksprods/products/kt-3a.htmThere is an interesting review of this machine in last month's audio express magazine.  Its still unclear to me exactly what all the different pulses are for. Neveretheless, it sounds very us...

Read the Post in new Window Read the Post in Threaded view  Post #5: ultramaximizer pro by op.9 on 2007-03-07 
Browse the content of the threads in new Window  Thread: Time Alignment : Live Performances vs Audio in Playback Listening  9 Replies 
Yes, I agree they are different issues. However, quite a big however too...It all depends on where we believe 'reproduction' starts. We are very rarely simply reproducing the feed form one single microphone. Choices are made very early on in the reco...

Read the Post in new Window Read the Post in Threaded view  Post #3: orchestra alignment by op.9 on 2007-03-07 
Browse the content of the threads in new Window  Thread: Time Alignment : Live Performances vs Audio in Playback Listening  9 Replies 
One of the dark arts of playing in (and conducting) an orchestra  is the question of judging when to play. This is a huge subject. For example, often the backs of sections are playing slightly behind anyway - If you play exactly on the spee...
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