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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

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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


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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

The Royals


IMG_1153

Design by:
Ben Jaszczak

Description:

The Royals are sealed, active, two way speakers intended for small room film mixing and general listening. The front and top of the speakers are made with solid  and unstained Purple Heart hardwood. The design intent for these speakers was to have relatively dry, high accuracy speakers with as far of a low end extension as possible within my budget and mobility constraints. The large sealed cabinet design serves to provide both fidelity, low end extension and clean low end transients. at ± 1dB The Royals achieve optimal frequency response when tuned for a specific room, as acoustic changes in any given room can have significant effects on the frequency response. The overall price of the two speakers was approximately $1,000.

Design:

  • Purple Heart hardwood and Baltic Birch plywood construction
  • Tang Band W6 1721 6 1/2″ paper cone woofers
  • SB Acoustic SB26STAC 1″ soft dome tweeters
  • MiniDSP PWR-ICE125 140W plate amplifier

Tech Specs:

  • Meets THX Standard 85dB with 20dB headroom
  • ± 1dB from 70Hz to 20kHz
  • F3 at 50Hz

Ben Jaszczak Crossover Graph (1)

Research & Design Paper

The Royals Glossy

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