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Multi-Way Conventional loudspeakers with crossovers

Monacor files
Monacor files
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Old 8th December 2017, 06:55 PM   #11
Lojzek is offline Lojzek  Croatia
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Sweet looking enclosures of Mario's!

Steve, in regard to tracing software just google the web site name mentioned in post #4 and get yout copy of it. It is easy to use and you don't have to bother with 500 clicks as with SPL Tools to create the data samples. In short, you choose the graph to trace, trim it to right size in "Paint", load it to FPGraphTracer, set scale to lin or log, mark the frequency and spl levels using magnifying tool to align cursor with the actual lines representing and then test visually before you save it as frd or zma.
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Old 9th December 2017, 11:29 AM   #12
Mario Pankov is offline Mario Pankov  Europe
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Monacor files
Quote:
Originally Posted by system7 View Post
But really, without the filter, you are being coy.
True but not much time these days. Here are some of the measurements but I wll post the real project sometime in January (I hope time will allow) with full set of measurements and data. But for now, at least this might do something in between. Minimum impedance is 4R44 at 183Hz with phase at 9.03 degrees. Enclosure is around 13l effective volume with port tunning at 48Hz. The overall tunning is set for corner placement as there they went and to be used with a subwoofer (I`ll post a photo of it too). The measurements include gated and a 12db smoothed in room response (my room, not the recipients) about 1.4m away from any walls. Crossover (measured) is at around 2.05Khz LR2 with both drivers connected with normal polarity. Measured sensitivity at 2.83V was 92.1db +/- 0.3db accuracy in the 100Hz-14khz band. The dip at 1.4Khz I suspect as suspension related as it is present on Monacor`s own measurements. The carbon-fibre cone has a light resonanse but is really annoying on-axis hence the additional network to address it.

They can actually do without a sub but if in a corner, otherwise sound a bit thin. The guy wanted them asap but will hand me over one to complete the off-axis and impedance measurements in a more digestable format, I hope at the beginning of next year. I don`t like to comment on sound as this is very subjective but the owner likes them.
Attached Images
File Type: jpg Simulated crossover.jpg (238.5 KB, 29 views)
File Type: jpg Simulated crossover reverse polarity.jpg (238.1 KB, 29 views)
File Type: jpg Gated response.jpg (357.1 KB, 28 views)
File Type: jpg Reverse phase on tweeter.jpg (375.5 KB, 27 views)
File Type: jpg Response 12db smoothing.jpg (358.2 KB, 26 views)
File Type: jpg Xover_schematics.jpg (116.7 KB, 17 views)

Last edited by Mario Pankov; 9th December 2017 at 11:35 AM.
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Old 9th December 2017, 11:51 AM   #13
Mario Pankov is offline Mario Pankov  Europe
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Monacor files
Here`s the sub, Monacor SPH-300CTC in a heavily braced 52l ported enclosure with downfiring ports (3 of them) tuned to 26Hz. It is driven by a Monacor SAM-300D (rebranded chinese amp, Madisound sells them under the Yung brand). Finish on these was a challenge as roundover radius (purely cosmetic in this case) is 12.7mm only but I found a way to bend veneer without cracking it by putting a few strips of paper tape on the outer side where the bend is. The whole cinema is finished in venge veneer and has a few coats of ICA polyurethane coating, a professional did it, was not me.

But the whole point was really why Monacor units are not that popular with the DIY market, outside of Germany, I attribute it to poor distribution mostly, their loudspeaker units are pretty competitive, the SPH series work very well in really small enclosures and some of the speaker units have parameters ideal for cost efficient sealed or transmission line designs, or even band pass enclosures in cars. Companies like Monacor and Visaton are also getting lots of pressure from the newer Asia based designers, such as SB Acoustics, Wavecor, Dayton and even Fountek.
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File Type: jpg Mjolnir subwoofer.jpg (749.1 KB, 18 views)
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Old 9th December 2017, 01:16 PM   #14
Mario Pankov is offline Mario Pankov  Europe
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Monacor files
Mid-woofer, Seas, Ciare, Ohm

These have some measurements and have been used as a source of FRD and ZMA files. I see the 175HQ there, perhaps it would help you source what you need?
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