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Loudspeaker Designs and Articles for the DIY Enthusiast
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Finalist
Monitor
Monitor
A smaller monitor sized Finalist design using high value drivers. |
Major specifications
A 2 way vented design with the Dayton RS28F fabric dome tweeter, and the Vifa NE149W-08 reed paper cone neodymium driver housed in an conventional
vented enclosure
Nominal Impedance: I'll call this one 8 ohms as the impedance curve flirts with, but never quite reaches 5 ohms at any frequency, and spends as much of
its time above 8 ohms as it does below. The impedance is above 10 ohms below 120 Hz. The minima are 5.5 ohms at 200 Hz, and again dips briefly to 4
ohms between 2500 and 3000 Hz, but then increases to above 8 ohms at higher frequencies. The worst amplifier load is 4 ohms and -20 degrees at 2500
Hz. This suggests an easy load for any reputable 6 ohm rated amplifier.
Dimensions: external: 8.5" wide, 12.5" tall, 10.0" deep
Basic Sensitivity: Approximately 84 dB / 2.83v / 1 meter
Max SPL: (Modeled at woofer published Xmax) 102 dB / 1meter
A 2 way vented design with the Dayton RS28F fabric dome tweeter, and the Vifa NE149W-08 reed paper cone neodymium driver housed in an conventional
vented enclosure
Nominal Impedance: I'll call this one 8 ohms as the impedance curve flirts with, but never quite reaches 5 ohms at any frequency, and spends as much of
its time above 8 ohms as it does below. The impedance is above 10 ohms below 120 Hz. The minima are 5.5 ohms at 200 Hz, and again dips briefly to 4
ohms between 2500 and 3000 Hz, but then increases to above 8 ohms at higher frequencies. The worst amplifier load is 4 ohms and -20 degrees at 2500
Hz. This suggests an easy load for any reputable 6 ohm rated amplifier.
Dimensions: external: 8.5" wide, 12.5" tall, 10.0" deep
Basic Sensitivity: Approximately 84 dB / 2.83v / 1 meter
Max SPL: (Modeled at woofer published Xmax) 102 dB / 1meter
Main / Design Goals
I have Mark and the gang at Meniscus to thank for the idea and support for the Finalist Monitor design. Use the same drivers as the Finalist design, but
leave off the woofer for a smaller, more personally sized design suitable for surrounds, desktop speakers, or anywhere a small speaker with good sound is
required. Per Marks suggestion, we utilized the NE149-08 Eight ohm driver this time to make it amp friendly. And of course the ubiquitous RS28F tweeter.
I have Mark and the gang at Meniscus to thank for the idea and support for the Finalist Monitor design. Use the same drivers as the Finalist design, but
leave off the woofer for a smaller, more personally sized design suitable for surrounds, desktop speakers, or anywhere a small speaker with good sound is
required. Per Marks suggestion, we utilized the NE149-08 Eight ohm driver this time to make it amp friendly. And of course the ubiquitous RS28F tweeter.
| Links to: Main / Design Goals Driver Selection Cabinet Construction Crossover Design Measurements Listening Impressions |
* Some of you more astute and observant readers may just happen to
notice that the tweeter in the pictures is in fact, not the RS28F. The
truth is I just flat ran out of time to make pretty enclosures for these
and the MicroStatements. At some point these pictures will be
replaced by proper ones. In the interum, just squint a little and use
your imagination as to how beautiful yours will look... -Curt
notice that the tweeter in the pictures is in fact, not the RS28F. The
truth is I just flat ran out of time to make pretty enclosures for these
and the MicroStatements. At some point these pictures will be
replaced by proper ones. In the interum, just squint a little and use
your imagination as to how beautiful yours will look... -Curt