Archive

Archive for the ‘40-60lbs’ Category

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

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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

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

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Center Integrated Response

center integrated 40

Subwoofer

sub response 60

Sandcastle glossy

Sandcastle Research Paper

Sandcastle Final Testing

The Jazzutes

May 2, 2016 Leave a comment

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(Badazz & Jazzhole)

Designed by:  Victoria Stack

Design Goals:

  • Mixing monitors for home studio
  • Medium size for portability
  • Accurate reproduction of sound
  • Flat frequency response
  • Budget: $800-$900

Key Features:

  • F3 of 54 Hz
  • Dimensions: 14 ½” x 16 ½” x 18 ½”
  • MiniDSP  Active Crossover
  • +/- 1.5 dB from 54 Hz to 15 kHz
  • 3rd Order Crossover at 2 kHz
  • 3/4″ MDF Baffle
  • Visual Aesthetics

Drivers:

  • Dayton Audio RS225-8 8″ Reference Woofer
  • Tymphany XT25TG30-04 1″ Dual Ring Radiator Tweeter

Frequency Response:

Frequency Response

Integrated Frequency Response:

Integrated Frequency Response

Speaker Glossy

Research Paper

Subfusc


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Goals:

  • Low frequency extension, down to 40Hz
  • Flat frequency response.
  • Budget of around $1000
  • Portability

Features:

  • 2-way system.
  • MiniDSP Active Crossovers
  • Vented cabinet for low frequency extension.
  • Flat response curve
  • +/1.25 from 100Hz to 15kHz
  • F3 at 36Hz

Cabinet:

  • 1/2” 9-ply baltic birch exterior
  • 1/2″ MDF interior.
  • 1” Acrylic around woofers
  • Black Plastidip coating
  • 1.4 cubic feet interior

Drivers:

  • Dayton Audio RS225-8 8” Reference Woofer
  • SB Acoustics SB29-RDC-C000-4 1” Ring Dome Tweeter

Full

 

Impulse

Subfusc Design Process, Construction, and Documentation

Subfusc Speaker Glossy

 

Aries I

May 6, 2014 Leave a comment

Aries I Loudspeakers

Designed By: Kevin “Hexecho” Gray

Description:
The Aries I loudspeakers were designed for use as desktop near-field monitor loudspeakers with a large soundstage and stereo image. A stand out feature of the Aries I cabinets are the high-Carbon gray Iron baffles and rear panels, this metal helps to add strength to the speakers while absorbing and dampening vibrations from the drivers, preventing the drivers from causing unsavory resonances in the wooden cabinets. The speakers are designed for an impressive transient response, and low-end extension with smaller sealed box, I wanted to make sure these speakers would give a kick drum some real kick. The speakers were intended for high-fidelity enjoyment along with music production and mixing, sporting a +/- 3 dB frequency response from 120Hz to 20 kHz with a +1 dB boost at 110 Hz.  The phenomenal off-axis frequency response of the Aries I allow it to excite a space with accurately reproduced sound, helping to add to the soundstage. Aesthetically the Aries I speakers sport an industrial style as-cast iron front and rear panels mounted into the deep-red 7 layer plywood cabinets by hex head bolts, and feature a the Aries sign on the outside of the right speaker layered in blue wood dye under the many layers of red.  After all of the metal work and parts costs the Aries I ran a budget of $800.

Design Goals:
Good low-end: F3~70Hz
Use of metal in speakers: Iron panels, aluminum woofer, titanium tweeter
+/-  3 dB frequency response
Bass boost: +1 dB at 110 Hz
Fit onto a desktop: 12″x12.5″x13″ 45 lbs
Great Transient Response
Big Soundstage

Frequency Response with Crossover  and Off-Axis Frequency Response

Full Range with crossoverhorizontal off axis

Pouring Aries I PanelPouring of an Aries I metal panel