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Read the Post in new Window Read the Post in Threaded view  Post #9: Re: Crossover or non-crossover help need. by Greg B on 2005-01-04 
Browse the content of the threads in new Window  Thread: Crossover or non-crossover help need. in Horn-Loaded Speakers  11 Replies 
Hey Romy, One rather simple acoustic solution would be to use a quarter wave stub. This is about the closest acoustic analog to an electrical notch filter. I believe JBL used  this trick in their 'Aquarius' speaker to remove a peak in the ...

Read the Post in new Window Read the Post in Threaded view  Post #11: Re: Crossover or non-crossover help need. by Greg B on 2005-01-05 
Browse the content of the threads in new Window  Thread: Crossover or non-crossover help need. in Horn-Loaded Speakers  11 Replies 
Yes, but if you could make it broadband enough, it might function effectively as a filter. IE, remove a broad notch from 300 to the mass rolloff of the horn. Just thinking aloud. What about a front compression chamber? That would seemingly be the ...

Read the Post in new Window Read the Post in Threaded view  Post #10: Re: Crossover or non-crossover help need. by Romy the Cat on 2005-01-05 
Browse the content of the threads in new Window  Thread: Crossover or non-crossover help need. in Horn-Loaded Speakers  11 Replies 
Thanks, Greg. I considered it. This method would act like a notching (with unprofitable sonic results as we understand) but I need rather a filter, preferably a sharp one… I know it is kind of a fantasy…. The Cat ...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: Crossover or non-crossover help need. by deemon on 2004-12-20 
Browse the content of the threads in new Window  Thread: Crossover or non-crossover help need. in Horn-Loaded Speakers  11 Replies 
Hello , Roma ! I think that you can use only a back chamber with decreased size , and a serial capacitor . I think that there are no ways besides  ... Dima...

Read the Post in new Window Read the Post in Threaded view  Post #1: Crossover or non-crossover help need. by Romy the Cat on 2004-12-20 
Browse the content of the threads in new Window  Thread: Crossover or non-crossover help need. in Horn-Loaded Speakers  11 Replies 
There is a quandary that I can’t resolve. There is a hypothetical horn-loaded chanall operating for instance flat form 100Hz to 5000Hz. Presumably I need to cut this channel off at 300Hz, very sharp-with 3-4 acoustical orders, but according to the ...

Read the Post in new Window Read the Post in Threaded view  Post #36: Crossover crossover rover by Bud on 2011-12-30 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
You need to find an individual who can design series crossovers. Both JBL and Altec used these, because they sounded best. You will need to look for an individual near where you live because they will have to test the drivers as the design progresses...

Read the Post in new Window Read the Post in Threaded view  Post #63: About the TwoGoodEars new crossover. by Romy the Cat on 2012-01-07 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
I am not completely thrilled with TwoGoodEars new crossover. http://vinylsavor.blogspot.com/2012/01/making-of-line-level-crossover.html First of all , Stephano has a preamp with tube out stage.  The guy in his post says that the l...

Read the Post in new Window Read the Post in Threaded view  Post #8: Crossover by Daniel on 2018-03-12 
Browse the content of the threads in new Window  Thread: Goto SG-370DX measurement in Audio For Dummies ™  30 Replies 
I read about Klaus Speth crossing at 6k6 and looking at the graph it seems like the absolut wrong thing to do. My first thought would be to cross at 5k first order and make use of the rolloff there. I'll have time over the weekend to hook them up to ...

Read the Post in new Window Read the Post in Threaded view  Post #2: Passive line level crossover advantages by drdna on 2009-01-21 
Browse the content of the threads in new Window  Thread: If you’re multiamping then use passive-line lever crossoveri... in Audio For Dummies ™  3 Replies 
[quote user="Romy the Cat"]The line-level crossovers work against fixed impedance and therefore the crossover point and the time alignment does not fluctuate along with reactance of the drivers.[/quote]Okay, maybe this is a dumb question, but why wou...

Read the Post in new Window Read the Post in Threaded view  Post #32: Re: Now you are getting to the real crux - crossover points... by rdrysdale on 2005-08-20 
Browse the content of the threads in new Window  Thread: Chinese upperbass horn. in Horn-Loaded Speakers  35 Replies 
Jeffery,    I think Romy brought up some good points about moving the crossover up. I've always wanted to push it down, to use the hf driver more as a full range unit, which is probably the wrong to go. Steve proved this to me when we ...

Read the Post in new Window Read the Post in Threaded view  Post #3: Then perhaps a new crossover is not needed? by drdna on 2005-10-29 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
Thanks very much for your prompt, courteous and informative reply!My thought about the crossover design for the EdgarHorn was due to a number of things:1.  This particular EdgarHorn is being sold to make way for a Cain & Cain speaker which i...

Read the Post in new Window Read the Post in Threaded view  Post #5: Try converting a crossover from foe to a friend. by Romy the Cat on 2007-01-26 
Browse the content of the threads in new Window  Thread: Passive line level crossovers - re:pre amp in Audio Discussions  5 Replies 
The line level crossovers have some advantaged: they loaded into higher impedance and therefore the values of caps are smaller. Also the line level crossovers loaded against fix impedance, contrary to the speaker level and this allow writing a very e...

Read the Post in new Window Read the Post in Threaded view  Post #2: Thought process behind crossover estimating, testing and execution by scooter on 2010-09-25 
Browse the content of the threads in new Window  Thread: Multi-amping crossovering. in Audio Discussions  6 Replies 
Very helpful primer. This might be a good place to elaborate a bit on approaching the task of crossover selection and testing for each driver, especially with respect to points, filter selection, steepness and other parameters one should consider. Fr...

Read the Post in new Window Read the Post in Threaded view  Post #31: Now you are getting to the real crux - crossover points... by Jeffrey Jackson on 2005-08-20 
Browse the content of the threads in new Window  Thread: Chinese upperbass horn. in Horn-Loaded Speakers  35 Replies 
and this is the huge decision.. although Steve and Rich's drivers do have the potential for extremely wide bandwidth, I feel that the first decision when designing a horn speaker is to decide how many horns and the corresponding crossover points...

Read the Post in new Window Read the Post in Threaded view  Post #14: Re: There are many layers of d-crossover problems - agreed by slowmotion on 2006-07-16 
Browse the content of the threads in new Window  Thread: Horns and digital crossovers. in Horn-Loaded Speakers  16 Replies 
OK - I agree more than not...but have difficulty putting that in words. I'm thinking only in horns - box speakers doesn't concern me. Still thinking..... cheers ...

Read the Post in new Window Read the Post in Threaded view  Post #128: Upperbass crossover by anthony on 2014-12-08 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
Romy, I appreciate that this is an old thread now and that you may not remember everything from your time developing these amplifiers, but I have a (hopefully) simple question about the upperbass crossover in the schematic above.  All other channels ...

Read the Post in new Window Read the Post in Threaded view  Post #1: Proximity of horn’s crossover and it’s ability to care over-amplitude. by Romy the Cat on 2007-09-16 
Browse the content of the threads in new Window  Thread: Proximity of horn’s crossover and it’s ability to care over-... in Horn-Loaded Speakers  2 Replies 
[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...

Read the Post in new Window Read the Post in Threaded view  Post #8: That crossover is perfectly understandable and very predictable by Romy the Cat on 2007-12-21 
Browse the content of the threads in new Window  Thread: The European Triode Festival’s horns in Horn-Loaded Speakers  57 Replies 
[quote user="Paul S"] If Marko "needs" 3rd order, is somerthing else amiss? [/quote]It is not amiss but an area where the things should be explored. What I like about horns that they have very little ambiguity and if everything is done “properly” the...

Read the Post in new Window Read the Post in Threaded view  Post #65: This is a universal crossover rule by Romy the Cat on 2008-06-21 
Browse the content of the threads in new Window  Thread: Adding one more spherical to Macondo. in Horn-Loaded Speakers  92 Replies 
[quote user="NBC"]… what do you feel is the upper usable frequency limit for operating your 250Hz tractrix before any negative effects of the horn itself become evident and begin unacceptably compromising the sound…[/quote] There is no other rules b...

Read the Post in new Window Read the Post in Threaded view  Post #105: I begin to like my active crossover. by Romy the Cat on 2011-05-04 
Browse the content of the threads in new Window  Thread: Macondo’s lowest channel. in Horn-Loaded Speakers  150 Replies 
I am observing an interesting and surprising fact – I am begging to like my active Marchand crossover. I did a number of modifications to it and it looks like the parts are broken-in now – it does sound very pleasant for my ULF. I feel it is a bit to...

Read the Post in new Window Read the Post in Threaded view  Post #6: Crossover points by arcgotic on 2017-11-16 
Browse the content of the threads in new Window  Thread: Vox Olympian secrets unveiled in Horn-Loaded Speakers  6 Replies 
Hello Martin,Do you know the crossover points of the Vox Olimpian?Thanks!...

Read the Post in new Window Read the Post in Threaded view  Post #32: Free first order crossover by anthony on 2017-08-30 
Browse the content of the threads in new Window  Thread: Deep End DIY - Australian take one Macondo. in Horn-Loaded Speakers  87 Replies 
I realised this morning that I have done a "not-so-standard" thing in using leftover fibreglass batts for stuffing the tubes.  The batts that I have on hand are high density batts, not the low density type of fibreglass that is usually used for stuff...

Read the Post in new Window Read the Post in Threaded view  Post #73: It is time to think about the MiniMe Crossover. by Romy the Cat on 2008-12-30 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
The last nigh I stopped by in the shop of my machinist. He did not finish the MiniMe as he is keep experimenting with better glue to assemble the MiniMe enclosure. All sides are prefabricated and are ready to glue, BTW, the G10 material turned out to...

Read the Post in new Window Read the Post in Threaded view  Post #9: Digital crossover by zanon on 2009-12-02 
Browse the content of the threads in new Window  Thread: Monitors: Wishful thinking in Audio Discussions  8 Replies 
Behringer has a 3 channel digital crossover just like what you want.Don't remember the model, but it's on their site....

Read the Post in new Window Read the Post in Threaded view  Post #159: Playing with crossover values and Fundamentals Channel by Romy the Cat on 2010-01-11 
Browse the content of the threads in new Window  Thread: Jessie Dazzle Project in Horn-Loaded Speakers  172 Replies 
[quote user="ayebee"]I’m probably suggesting the obvious, but have you tried adjusting the crossover component values on the fundamentals and MF-channels? On the fundamentals-channel, increasing the inductor-value, and decreasing the cap, so that...

Read the Post in new Window Read the Post in Threaded view  Post #6: Crossover by el`Ol on 2010-01-25 
Browse the content of the threads in new Window  Thread: Vitavox corner horn in Horn-Loaded Speakers  10 Replies 
Romy,what do you think will be the crossover points of the new system?...

Read the Post in new Window Read the Post in Threaded view  Post #1: Saying goodbye to the digital crossover. by noviygera on 2010-01-28 
Browse the content of the threads in new Window  Thread: Saying goodbye to the digital crossover. in Didital Things  8 Replies 
Thanks for that collection of negative information on the DSP effects on music, Romy. I'm not a contributor to your site but you always put me in wierd situations with your unusual findings. For example, I have always used a DBX digital crossover in ...

Read the Post in new Window Read the Post in Threaded view  Post #202: Crossover by N-set on 2022-05-04 
Browse the content of the threads in new Window  Thread: Remedies the Beauty in Playback Listening  293 Replies 
Bill, contact me pls. The UK guy doesn't answer and I'd be happy to buy yours. Thanks...

Read the Post in new Window Read the Post in Threaded view  Post #4: Original crossover by panwitz on 2018-03-09 
Browse the content of the threads in new Window  Thread: Coral x-viii in Horn-Loaded Speakers  11 Replies 
El Cheapo from Japan. But very complex. With a switch for choosing different crossover points...

Read the Post in new Window Read the Post in Threaded view  Post #1: CD horn and JBL: Crossover point by Dominic on 2006-09-26 
Browse the content of the threads in new Window  Thread: CD horn and JBL: Crossover point in Horn-Loaded Speakers  2 Replies 
Hey Rom etal.I'm entering into unknown and difficult to intuit territory for me.I aquired a pair of very large constant dirrectivity horns EV hr9040 a, a little while ago and i now have a pair of jbl 2420's to power em. I haven't put them to gether, ...
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