JJM-001 Home Theatre Loudspeakers


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Designed, Constructed, and Tuned by Jonah Mueller

Design Goals:

  • Floor-standing for Home Theatre
  • Full Range 2.0 System
  • Flat Frequency Response
  • Pleasing Sound & Looks

Key Features:

  • Vented Cabinet Design
  • +/- 2dB Frequency Response
  • F3 of 19.5Hz when placed near wall (45Hz free air)
  • <1% Harmonic Distortion
  • Smooth Off-Axis Roll-Off

Drivers:

  • SB Acoustics SB26STAC-C000-4 1″ Textile Dome Tweeter
  • Dayton Audio RS225-8 8″ Aluminum Cone Woofer

Frequency Response (Integrated):Integrated Frequency Response.png

Off-Axis Response:

Off-Axis Response.png

Harmonic Distortion:

Harmonic Distortion.png

Speaker Glossy

Research Paper

Smooth Smith Audio – 312c

April 29, 2017 Leave a comment

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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

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Transducer Speaker Project

April 28, 2017 Leave a comment

Speakers

Designed by Luke Dixon

Drivers

-2, 1″ SB Acoustic Textile Dome Tweeters

-2, 8″ SB Acoustic Paper Cone Woofers

About

-Sealed Enclosure

-2 way Active Crossover

-Hand Crafted Cabinets

-Low Frequency boost

Design Goals

-Casual speakers to use for home entertainment

Final Frequency Plot

MFinal


Speaker Glossary


Speaker Research

NC-17 Reference Monitors

April 28, 2017 Leave a comment

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Designed by Nick Cecconi

Design Goals:

  • Mixing monitors for home
  • Inspired by C-17 airplane
  • Flat frequency response
  • Budget: $1000

Key Features:

  • F3 of 56 Hz
  • Vented enclosure
  • Battleship gray finish
  • Dimensions: 12” x 15” x 17”
  • +/- 1 dB from 56 Hz to 18 kHz
  • MiniDSP 2-way crossover @ 1.8 kHz
  • 1/2″ Maple w/veneer core, 1/2″ MDF

Drivers:

  • SB Acoustics SB26STAC 1″ Textile Dome Tweeter
  • SB Acoustics SB23NACS 8″ Aluminum Cone Woofer

Frequency Response:

LeftTuned_v2-1

Integrated Frequency Response:

Integrated Frequency Response.png

NC-17 Research Paper

NC-17 Speaker Glossy

http://www.nickcecconi.com

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

8X25R

April 27, 2017 Leave a comment

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Designed By Samuel James Balk
Design Goals:
– 2.5-way design
– Active processing
– F3 of at least 50Hz
– Visually striking
Key Features:
– 2.5-way design
– +/-1.5dB from 50Hz to 30,000Hz
– Excellent Off-Axis Response
– Handmade compound front baffle constructed with layered 1.5″ MDF wrapped in carbon fiber
– Sealed enclosure
– Rear cabinet constructed with 1/2″ plywood and 1/2″ MDF sandwiching mass loaded vinyl
– 4th order asymmetrical crossover at 2200Hz
Drivers:
Fountek FW200 8″ Aluminum Woofers
Fountek NEO X 3.0 Ribbon Tweeter
Frequency Response
Full System FR
Integrated Frequency Response

Integrated.png

8X25R Research

8X25R Glossy

 

Sandcastle 7.2


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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