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Archive for the ‘Active/Passive Combination’ Category

Gust Op. 1

April 27, 2018 Leave a comment

 

Gust Op.1

Designed by Jacob Gust

Design Goals:

  • Active Home Theater Loudspeakers
  • Warm & Unique Sound
  • Extended Low Range
  • Even Off Axis Listening
  • Pleasing To Look At

Features:

  • Ribbon Tweeter, 5″ Mid, & 8″ Woofer
  • Passive 3kHz Crossover between Tweeter & Mid
  • Dual Internal Volume Design with Crossover Cubby
  • Matching Custom Speaker Stands
  • F3 of 30Hz
  • +/- 3dB from 30Hz-20kHz

Frequency Response:

Gust Freq

Integrated Frequency Response:

Gust Integrated Freq

Off-Axis Response:

Gust Off Axis.png

Harmonic Distortion:

Gust Harmonic.png

Gust Op. 1 Glossy

Gust Op. 1 Technical Binder

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HA-3s

April 26, 2018 Leave a comment

HA-3

Designed by Henry Ashburn

Design Goals:

  • High SPL output
  • F3 of 30 Hz
  • Aesthetically beautiful
  • Wide horizontal dispersion

Features:

  • Ribbon tweeter, mid-woofer, 12″ side-firing subwoofer
  • MiniDSP PWR-ICE 250
  • Separate enclosures
  • F3 of 31 Hz
  • ± 3 dB frequency response

Frequency Response

HA-3 Frequency Response

Integrated Frequency Response

HA-3 Integrated Frequency Response

Off-Axis Frequency Response

HA-3 Off Axis Frequency Response

Harmonic Distortion Percentage

HA-3 Harmonic Distortion Percentage

HA-3 Speaker Glossy

Smooth Smith Audio – 312c

April 29, 2017 Leave a comment

transducer_cp-7927jpg_34129667062_o

Designed by Eric “Smooth” Smith

Design Goals:

  • Hybrid as mixing monitors and entertainment system
  • Partially mobile/ Easy to fit in smaller spaces
  • Flat frequency response with variable low end
  • Budget: $2500

Key Features:

  • F3 of 28Hz
  • Sealed enclosure
  • +/- 1 dB from 150Hz to 20kHz
  • +/- 2 dB from 30Hz to 150Hz
  • MiniDSP active crossover @ 130 Hz, passive crossover at 3.5kHz
  • 1/2″ MDF, 1/2″ Cherry MDF

Drivers:

  • Eton 25SD-1 1″ Soft Dome Tweeter
  • Dayton Audio RS150P-4 6″ Paper Cone Woofer
  • Dayton Audio RSS315HF-4 12″ Aluminum Cone Woofer

 

Frequency Response:

 

F - 60

Integrated Frequency Response:

F IntOff-Axis Response

F - Horizontal Off-Axis

Harmonic Distortion

F - Harm Dist

Rear Sub-woofer Connection

transducer_cp-8318jpg_34246999196_o

TUX-01

April 28, 2017 Leave a comment

Speakers 1Designed by Andrew Summers

Design Goals:

  • Create a rugged speaker system that is ready for the road
  • Flat frequency response for accurate mixing
    • +/- 3dB or better

Key Features:

  • 2.5 way hybrid crossover
    • Combination of miniDSP and passive crossover point in-between tweeter and mid-woofer
    • 2nd order crossover at 200Hz between mid- and sub-woofer (active)
    • 2nd order low pass filter on mid-woofer at 800Hz (passive)
    • 2nd order high pass filter on tweeter at 3kHz (passive)
  • F3 of 48Hz
  • +/- 2dB from 20kHz to 50Hz
  • Sealed enclosure
  • All SB Acoustics drivers
    • Sub-woofer – SB29NRX75
    • Mid-woofer – SB13PFC25-08
    • Tweeter – SB26STCN-C000-04

Construction:

  • 1/4″ birch ply on all exterior walls
  • 1/2″ birch ply on front baffle
  • 1/2″ MDF on all interior walls
  • 1/2″ birch panel in between mid-woofer and sub-woofer to create a separate sub cabinet
  • 1/4″ aluminum extrusions
  • Aluminum corner caps
  • Rust-oleum Black Truck Bed Liner finish

Tux FR

FR Full System All Axis

TUX-01 Research

TUX Speaker Glossy

Sandcastle 7.2


26131840034_76958c0dac_o

Designed by: Eric Bartos

Goals

  • 7.2 surround sound system for enjoyment and the occasional mix
  • +/- 4dB response
  • active crossover

Key Features

  • F3 of 38Hz on surround speakers (before crossover between subwoofer)
  • F3 of 34Hz on center speaker (before crossover between subwoofer)
  • F3 of 24Hz on subwoofers
  • +/- 4dB from 50Hz to 21kHz on surround speakers
  • +/- 4dB from 47Hz to 21kHz on center speaker
  • +/- 2dB from 25Hz to 200Hz on subwoofer
  • center speaker has active/passive crossover system
  • 1/2″ birch ply and 1/2″ MDF construction for center speaker and surround speakers
  • 1/2″ birch ply and 3/4″ MDF construction for subwoofers
  • BSS Blu-100 & BSS Blu-BoB for DSP

Drivers

  • Woofer: Dayton Audio RS225-8
  • Tweeter: Seas Prestige 19TFF1
  • Midrange (Center speaker only): Dayton Audio RS52AN-8
  • Subwoofer: Eminence LAB12-C

Frequency Response

Surround speakers

Surround Overall 60db range

Surround Integrated Response

surround integrated 40

Center Speaker

center response 60.png

Center Integrated Response

center integrated 40

Subwoofer

sub response 60

Sandcastle glossy

Sandcastle Research Paper

Sandcastle Final Testing

TW-84 Home Entertainment Speakers

April 29, 2016 Leave a comment

TW-84 Pic

Design Goals

  • Pleasurable
  • Fairly Flat Frequency Response
  • Passive Crossover
  • Ported Enclosure For Increased Low End
  • Pair With External Subwoofer
  • Sound Good Alone As Well

Key Features 

  • WxDxH = 1′ x 1′ 3/8″ x 3′ 9 1/2″
  • +/- 2dB from 40-20,000Hz
  • 2 Way Design
  • F3 of 37 Hz

Drivers

  • Scanspeak D2604/32000
  • Dayton Audio RS225

 

Frequency Response

Frequency

Documentation: 

Design & Final Testing Report

Glossy

Aeternus Lux 2.2 Modular System

May 11, 2013 1 comment

Design and Construction:

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Paul Kirby

Design Goals

  • Portable
  • Low Fatigue
  • Low bass extension
  • Modular
  • Good horizontal Off-axis
  • Eventual use in 5.1 system

Key Features 

  • Large Size WxDxH = 9″x1’2″x4’10”
  • +/- 1.5dB from 75-20,000Hz
  • MTM Design
  • Inset tweeter for minimal distance between woofers, hence minimal vertical lobbing
  • Side-firing subwoofer modules (f3 of 25Hz)
  • Removable main with f3 of 70Hz
  • +/- 1.5dB from 75-20,000Hz
  • Active to passive cascaded crossover for module implementation

Drivers

  • Morel MDT30S-4 1″ Textile Dome Tweeter
  • SEAS Prestige L15RLY/P (H1141) 5.5″ Aluminum Cone Woofers
  • SB Acoustics SB29SWNRK-S75 10″ Subwoofer

Main Response (green is port measurement)

Integrated Response

Sub Response

Sub Response

Impulse Response

Impulse Response

Documentation: 

Design Report and Final Testing

Aeternus Lux Drafting

Glossy