Nklipsch

Great PWT pic ! http://www.leesound.com/bw_photos/photo15.jpg :-)

My 256ks struggling too! Example of thumbnails,saves on bandwidth,uses IRFANVIEW free good program. http://www.geocities.com/basshornguy/pics/pura/pura.html [link will probably break due to BW use] Or http://www.geocities.com/xobt/rajeev/rajaudio.html Mike.e

The majority of people would probably click 'yes' to the installation of 'music playing software',just look at the proliferation of malware elsewhere. The funny thing is,it encourages people to rip it,and then burn their own copy without protection.

I use Qcad 1.5(old free version) for 2D stuff. Works well for somethings but not others. I found it extremely intuitive unlike autocad.

Depends on what frequency is being produced,what will happen. Consider acoustical sizes. 40hz being 8metres long the baffles will do nothing at all. at 2khz there will be some lobing from the large woofers,and the lobes will cross each other like two fingers. http://www.burton-manor.co.uk/Audio/LAthoughts.htm

$/dB I think it comes out to about the same...but I guess it depends on your goals. Mounting four $300 drivers in the cieling doesn't cost too much beyond the cost of the drivers (so let's call it $1500) - I bet you could easily drop $1500 on a huge bass horn (a sheet of plywood costs like $40-$80 depending on how nice you want it - multiplied by 10 is pusing $600, then add a $300 driver which comes to $900 and then a few hundred for finishing and nails and all that). I think the few hundred dollar difference makes up for itself when you take into account the amount of floor space you save (perhaps we should include the average price per square foot of our houses too) 4 15"s in the ceiling wont acheive the same SPL. Their sensitivity will be about 90dB/1watt vs 105dB/1watt for the one hornloaded driver.. Ofcourse the sealed box response will roll off nicely to give about 80dB/1watt at 20hz. I wouldnt use ply,its not going to move. For the LF I wouldnt consider basshorns,they approach ROOM size.. For the midbass,yes. Most of use dont need it that loud anyway. Apples vs oranges. Would be cool to integrate it with the design of a new house though!

Not all of us have an attic that we own to cut holes into :-)Actually,I disagree. Try it. For $/dB horn is the best anyway. I wont bother comparing 14 x 8"s to the six 12" business. Im not advocating compromised pipe horns for 20hz,I think that sticking horns to an octave higher is a more practical idea,eg edgar horns. edit : we both own 2226 for sub duty :-) Mike.e

we all want 20hz-20khz but is it really required? I find ~32hz a decent cutoff for music,I listen to DnB. A 650litre labhorn sized unit will only reach ~27hz in room. With a 1.2m flare extender it will go a little bit lower. http://www.geocities.com/xobt/basshorns/basshorns.htm http://web.archive.org/web/20000610064936/http:/www.arl.mil/ARL-Directorates/ISTD/aat/MOAS.htm

Ive only ever seen 3D balloons of polars on renkus-heinz I think,showing lateral and verticle info is great! But most people dont want to display this info so its of no importance to them ;-) (nasty holes in cone driver xover points etc) regards Mike.e

www.allaboutcircuits.com or http://www.bcae1.com Using a pc with moderately linear sound card,and sine wave generator software,a plot can be created. Use a 1k in series,and you can also use a large resistor for calibration. Cant find the value right now!(lent a book to a mate,who moved house!) Then you hope your DMM is accurate from in the range your requiring-for subs probably their ok.

---------------- On 8/19/2005 6:14:39 AM consistent wrote: Hi there, I'm currently playing around with caps and resistors in my pre-amp and believe me these have an effect on the sound of the sssssssssssss's. Use female voices they tend to 'test' your system as to its harshness, brightness and sweetness. I agree that it starts with the recording but ends up through your speakers. You just have to make sure your system doesn't add anything to the recording. Cheers ---------------- Hello, It would be useful to people if you wrote up your method,results and conclusions.Im interested in objective vs subjective effects of these issues. Mike.e

BIG horns,that probably are only just CIR=1 IE largely resistive but still not ideal. http://www.geocities.com/xobt/

Oh,very good!Id only heard of this paper,didnt realise the content was so interesting Shows very clearly the improvements made with CE HF horns! The abberations in Directivity are greatly improved.

JJK : The physics constants which control this universe havent changed in the last few years. That horn length will also have a certain mouth size. The optimal St and Vrc will be dependant on the driver itself.

Ah yes I remember that image stating which reflections and which action to be taken. What is it from? An online pdf I think Mike.e