18" horn enclosure

[Rademakers]

Usually the cabinet external volume is about 1.2 - 1.35 times the volume simmed by Hornresp. I calculated the external volume as ~435 liter, therefore I would limit simulated volume to ~344 liter or less. On my own designs I calculate the panel volume and substract that from the external volume, as well as the driver, handles, etc.

It will go ~10 Hz lower then Cubo 18, at the same sensitvty. it will have ~40% higher excursion needs between 40 -60 Hz, significantly less below 40 Hz untill equal at about 25 Hz.

Cubo 18 is ~250 liter external, Cubo Sub is ~368 liter external.

Best regards Johan

[simpleacoustic]

"It will have ~40% higher excursion needs between 40 -60 Hz, significantly less below 40 Hz until equal at about 25 Hz."-What does this mean in terms of efficiency as an outdoor cab for dj and p.a since the 40 -60 Hz range is also much needed ?

[NEO Dan]

Originally Posted by simpleacoustic

"It will have ~40% higher excursion needs between 40 -60 Hz, significantly less below 40 Hz until equal at about 25 Hz."-What does this mean in terms of efficiency as an outdoor cab for dj and p.a since the 40 -60 Hz range is also much needed ?

The difference between the 2 dual 18" bins and 4 of these single 18" bins @ 1000 w per driver.

[simpleacoustic]

Anyone willing to try this enclosure with RCF L18P300 ?I have no ts parameters.Will appreciate very much thanks.

[simpleacoustic]

Here it it is
General Specifications

• Nominal Diameter: 460 / 18 mm/inch
• Rated Impedance: 8 Ω
• Program Power: 2000 W AES
• Power handling capacity: 1000 W AES
• Sensitivity: 97 dB
• Frequency Range: 35 Hz ÷ 1000 Hz
• Effective Piston Diameter: 380 / 15 mm/inch
• Max Excursion Before Damage (peak to peak): 40 / 1.6 mm/inch
• Minimum Impedance: 6.0 Ω
• Voice Coil Diameter: 100 / 4 mm/inch
• Voice Coil Material: Copper
• Voice Coil Winding Depth: 23 / 0.9 mm/inch
• Number of layers: inside / outside
• Kind of layer: 2
• Top Plate Thickness: 15 / 0.6 mm/inch
• Cone Material: No pressed pulp
• Cone Design: Curved
• Surround Material: Polycotton
• Surround Design: M - roll

Thiele/Small Parameters

• Resonance frequency: 33 Hz
• DC resistance: 5.0Ω
• Mechanical factor: 8.3
• Electrical factor: 0.34
• Total factor: 0.33
• BL Factor: 23.5 T · m
• Effective Moving Mass: 180 g
• Equivalent Cas air load: 226 liters
• Effettive piston area: 0.113 m²
• Max. linear excursion (mathematical): 7.8 mm
• Voice - coil inductance @ 1kHz: 1.9 mH
• Half-space efficiency: 2.30%

Mounting information

• Overall Diameter: 470 / 18.5 mm/inch
• Bolt Circle Diameter: 438 / 17.2 mm/inch
• Bolt Hole Diameter: 8 / 0.3 mm/inch
• Front Mount Baffle Cut-out: 416 / 16.4 mm/inch
• Rear Mount Baffle Cut-out: 416 / 16.4 mm/inch
• Depth: 209 / mm/inch
• Volume occupied by the driver: 6.5 / 0.23 liters/ft³
• Net Weight: 14 / 31.1 kg/lbs

Shipping information

• Shipping weight: 14.8 / 32.9 kg/lbs

[epa]

it works with some eq-ing