FS: AudioKinesis Planetarium Sigma , Stands, Space Generators

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James Romeyn

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  • James Romeyn Music and Audio, LLC
    • James Romeyn Music and Audio, LLC
Posted only with AK permission.

AudioKinesis  Planetarium Sigma, Stands, Space Generators








The six pieces include: Two AudioKinesis Planetarium Sigma satellites, two dedicated stands, and two reverberant field Space Generators.  $4,950 selling price includes dealer’s Full 5 yr Warranty same as new. Seller is AK dealer. Sale includes lifetime setup and tuning advice.  Audition OK for screened individuals in Goldsboro, N.C. 

Satellites require subwoofer below approximately 60 Hz.

Please read the details:

Sigma Satellites:

Furniture grade real maple veneer
Sensitivity: 94.5 dB @ 2.83V @ 1M
Net Weight Sigma Each: 51 lbs 13 oz on certified scale
Driver Layout: MHM mid bass/horn/mid bass
Radiation pattern: 90 degree horizontal x 45 degree vertical
Recommended Siting: cross fire to intersect 3-4 feet IFO sweet spot
Mid-Treble: US made Radian Beryllium compression driver, 1” throat, 1.75” diaphragm
Mid-Treble Tuning: minimum output = posts open/no resistor, maximum output = post shorted, 2 included resistor choices for in-between steps
Mid-Bass: Faital from Italy, octagonal alloy frame, treated paper cone, accordion surround, neodymium magnet
Sigma Dimensions HWD: 26 x 18 x 10 inches, 45 degree angle on all 4 vertical corners: angles 1.75” wide on front, 3.5” wide on rear
Bass Tuning: four air-tight plugs allow sealing any number of ports (none to four) to tune around bass modes
Power handling @ maximum clean output, 1 dB dynamic compression: full range 100Wrms @ 114.5 dB @ 1M, active high-pass crossover 4th order @ 70 Hz = 400Wrms @ 120.5 dB @ 1M
System Design: constant directivity waveguide (consistent radiation pattern from mid range through treble), reflex loaded mid bass w/four rear-firing dual-flared ports located behind mid bass to enhance reverberant field energy

Cabinet Details:
All drivers flush mounted
1.5” thick baffle around mid bass
¾” solid maple top
¾” MDF construction, pre-veneered inside and outside
Grille is truncated diamond shape, AKA vertically stretched octagon
Reinforcement: mass-loaded top and base panels, two full horizontal window braces (one each between waveguide and MB)

Dedicated Stand for Sigma Satellites:

Net Weight without Ballast: estimate 25 lbs
Braces within vertical upright, just above pedestal and below speaker platform: ¾” MDF
Speaker platform: ¾” solid maple
Vertical upright: 8” outer diameter composite cylinder, leave empty as is or fill with desired ballast not included
Finish: clear satin on solid maple speaker platform, all else satin black automotive paint

AudioKinesis Space Generators:

Space Generator application developed by Duke LeJeune of AudioKinesis and James Romeyn. Earlier speakers for this application were called LCS for Late Ceiling Splash. Duke LeJeune designed all LCS and Space Generator speakers.

SG is a special auxiliary almost-full range loudspeaker, adding ideal reverberant field performance to Sigma and any primary speaker. SG mounts behind the main/primary speaker.  A continuous volume control under the base provides exact level matching for primary speaker sensitivity from low 80 dB to low 90 dB.
Driver: Eminence 10” co-axial
Frequency Response: approximately 55-17 kHz in-room
Input Impedance: varies by level control setting: 9.3 Ohm/25.3 Ohm DC @ maximum/minimum volume
Sensitivity: A continuous volume control under the base provides exact level matching for primary speaker sensitivity from low 80 dB to low 90 dB. (Main speaker level alone: 73 dB @ sweet spot with uncorrelated pink noise. SG level alone: 60 dB same conditions. )
System Type: sealed enclosure, proper spectral curve for flat response w/floor boundary reinforcement
Dimensions WD: 12” x 12”, H 18.5” nominal (top panel/driver baffle angled 22.5 degrees, height w/grille 16.5” to 20.5”)
Amplifier Requirements: easy phase angles, flat impedance above the bass range, level-control-dependent nominal value 9.3 Ohm (maximum volume) to 25.3 Ohm (minimum volume) DC.  All or most amps can safely drive SG wired in parallel with main/primary speaker (ask vendor if in doubt). A separate outboard amp with level control (not included) allows blending with primary speakers outside the low 80 dB to low 90 dB range.

This one owner system was gently used in a non smoking professional’s home. Ships via FX to USA buyer.  International sale welcome, inquire for low sea carrier price. 
 
3 OEM crates (2 Sigma, 1 crate for goth SGs) and packing materials from N.C. near Raleigh.  Mountain Time Okay to call from 8 a.m. to 8 p.m. 435 213 3953
 



« Last Edit: 25 Oct 2017, 11:53 pm by James Romeyn »