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Archive for the ‘60-90lbs’ 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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AH-8 “Revealers” Studio Monitors


Speakers 2

Design Goals:

  • Flat frequency range
  • Excellent clarity and depth
  • Studio monitors
  • $1500 Budget

Key Features:

  • F3 of 45 Hz
  • +/- 1 dB 45 Hz to 20 kHz
  • Sealed Box
  • Active Crossover via MiniDSP 2×4 DSP
  • Off center driver position
  • Custom built and amp rack

Driver Selection

  • ScanSpeak Classic 21W/8555-10, 8″ Woofer
  • ScanSpeak Illuminator R3004/6620-00 1″ Tweeter

new integrated right

Watefall

Harmonic Distortion

Impulse Response

Speaker Glossy

AH-8 Speaker Drafting 4-2-18

 

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

Not Your Grandpa’s Speakers


26738402275_a9b58aa026_k

Designed by: Mike Schmitz

Design Goals

  • Casual listening
  • Large and noticeable
  •  Unique aesthetics
  • Passive

Key Features

  • F3 of 26 Hz
  • +/- 6 dB 26 Hz to 18 kHz
  • 2nd Order Crossover at 250 Hz, 4th Order Crossover at 2.5 kHz
  • Wide Dispersion
  • Cost less than $1200
  • Ported design
  • 3/4 in. MDF and 1/2 in. Baltic Burch construction with Maple trim.

Drivers
Tweeter – Fountek Neo X 2.0 Ribbon
Midrange – SB Acoustics SB15MFC30-4
Woofer – SB Acoustics SB29NRX75-6

Frequency Response
F-FQ
Integrated Frequency Response
F-IFQ
Not Your Grandpa’s Speakers Glossy
Not Your Grandpa’s Speakers Research Paper

AJJ 994’s 3-Way Floorstanding Passive System

April 28, 2016 Leave a comment

IMG_8937

Designed by: Andrew ‘AJ’ Diehl

Design Goals:

  • Sealed enclosure for tight response
  • Passive because it’s awesome
  • Tight bass
  • Accurate reproduction of sound for crucial listening

 

Key Features:

  • F3 of 39 Hz
  • +/- 3 dB from 90 Hz to 22 kHz
  • 3rd Order Crossover at 2 kHz and 130 Hz
  • Additional 3rd Order Crossover at 300 Hz on Subwoofer
  • Optional 45 Hz Notch Filter on Subwoofer to control nasty resonance
  • Artist from Chicago will be painting both speakers in abstract form

 

Drivers:

  • Tweeter:
    SB Acoustics SB29RDC-C000-4 Ring Dome Tweeter
  • Mid-Woofer:
    SB Acoustics SB15NRXC30-4 5″ Woofer
  • Subwoofer:
    SB Acoustics SB34NRX75-6 12″ Woofer

Screen Shot 2016-04-28 at 4.51.51 AMScreen Shot 2016-04-28 at 4.51.40 AM

Side note on responses: notch filter is included in final results.

Download Glossy: AJJ 994 Speaker Glossy
Download Report: AJJ-994 Transducer Report

Diamond Series

April 26, 2012 1 comment

This 2.5-way pair of loudspeakers is designed for home theater use.  The design includes four Aura 6″ woofers and a 1″ ScanSpeak tweeter.  The speakers are vented with ports on the back diagonal sides, and have a passive crossover.


  Image

Design Goals

  • Cost around $500.
  • Good low frequency extension.
  • Produce 105 SPL (THX standards).
  • Low power requirements.

Key Features

  • 2.5-way system
  • passive crossover
  • vented system
  • f3 of 40hz
  • bandwidth of +/- 3 dB

Drivers

Aura NS6-255-8A 6″ Woofer

ScanSpeak D2608/9130  1″ Textile Dome Tweeter

Cabinet

Walls are 2 layers with:

3/4″ Birch plywood, 3/4″ MDF

Documents

Design Statement

Speaker Drafting

Final Testing Report

Crossover Schematic

Speaker Glossy

Performance Graphs

Diamond Series Driver Summation (Black-Full, Red-Tweeter, Yellow-Mid, Green-Low)

Diamond Series System Decay

Diamond Series Left-Right Speaker Difference

Sonic Bluhm 2-Way Loudspeaker System

April 26, 2011 Leave a comment

Sonic Bluhm – 2-Way Loudspeaker System

Overview.

  • Designed and built for use as left / right pair for home theater system.
  • Primary use, movie and music playback

Features.

  • Vented box construction, providing lower f3 frequency
  • Unique shape to avoid following problems:
    • Panel Vibrations
    • Internal cabinet standing waves
    • Edge diffraction
  • 2.1 cubic foot internal box volume
  • Capable SPL, of 90 dB Continuous, 102 peak

Cabinet Construction.

  • Cabinet made using constrained layer construction
  • There are 4 layers to my cabinet (listed from outside to inside)
    • 1) 3/4″ 13 Ply Baltic Birch
    • 2) 1/2″ MDF
    • 3) 1/8″ Mass loaded vinyl
    • 4) 1/8″ Masonite
  • Rounded top edge
  • Only 3 visible screws per speaker, giving them a very clean and polished look

Drivers.

  • Woofer: Seas Excel 8″ W22EX001
  • Tweeter: ScanSpeak Illuminator D3004, 1″ soft dome

Documentation.

Testing Results.

System Frequency Response: Purple- Port, Blue- Woofer, Green-Tweeter, Red- Summation

Frequency Response, Tweeter Polarity Flipped


Horizontal Off Axis Testing: Green 0*, Purple 15*, Red 30*, Blue 45*, Yellow 60*


Vertical Off Axis Testing: Green 0*, Red 15*, Blue 30*, Purple 45*, Yellow 60*


Step Response


Impulse Responce


System Minimum Phase Response


Woofer Impedance: Yellow- 8 Ohm resistor, Red- Speaker System


Creative Commons License
Sonic Bluhm 2-Way Loudspeaker System by Dan Bluhm is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.