Anthology II 3-Way Tower by Jim Holtz & Curt Campbell

Anthology II 3-Way Tower by Jim Holtz & Curt Campbell - Pair

Yet another great speaker build from Speaker Design Works!

YouTube Video: Can DIY Speakers Beat $10,000 Speakers??  by Nate From the Internet

The Anthology II is a 3-way 5-driver floor standing tower in a MTMWW configuation. 

Visit the Anthology II design on the Speaker Design Works website here.

It is based on the original Anthology design, which can be viewed here. 

Flat pack cabinets are available for purchase through Speaker Hardware.

All prices show include a 10% discount on the drivers and parts.

Each Anthology II Speaker Kit Includes:

• (2) SB Acoustics SB26CDC-C000-4 Alum-Ceramic Dome Tweeters
• (4) SB Acoustics SB15CAC30-8 Ceramic Cone Mid-Bass Drivers
• (2) Professionally Assembled Crossovers (details below)
• *The RS225-8 woofers for this project are not available through Madisound (est. cost for 4pcs is $380)

Optional Accessories Package Includes:

• (4) Wool Felt 36" x 36" - line internal walls
• (2) Acousta-Stuff 1lb - fluff & fill enclosure
• (38) Supra Classic 1.6 15awg ft - tinned oxygen free copper internal speaker wire
• (20) Quick Connects - connect speaker wire to drivers (6x QC110B, 6x QC205R, 4x QC250B, 4x QC250R)
• (48) OXSOCKET8x1 screws - mount drivers to cabinet
• (8) OX6PAN3/4 screws - mount crossovers inside cabinet
• (1) Silver solder pc - solder wires to crossovers (mandatory), drivers & binding posts (optional)

Anthology II Specifications:

• Frequency Range: F3 of 32Hz w/ tweeter measuring flat past 20kHz & out to 40kHz
• Sensitivity (2.83V / 1m): 87 dB
• Min Impedance: 4.8Ω @ 90Hz
• Max SPL: 110 dB / 1m (modeled at published woofer X-max, actual is higher)
• Recommended Amplifier: 50-400 W
• Crossover Frequencies: 410Hz / 1800Hz
• Enclosure Type: Bass reflex for woofers & cylindrical for midrange drivers
• Cabinet Dimensions: 48" tall x 11-1/2" wide x 15-1/2" deep using 3/4" walls and 1-1/2" front baffle
• View pdf cabinet plans here.

Frequency Response w/ Transfer Function - Phase Response - Impedance Response


Harmonic Distortion


Madisound Assembled Crossovers

Each crossover is professionally assembled by Madisound on a Matrix Double (11" x 5.6") silver tinned inlaid OFC copper circuit board. 

The series tweeter circuit uses a ClarityCap CSA cap and Mundorf MOX resistor. The parallel tweeter circuit has a 19awg air core inductor.

The series midrange circuit uses a ClarityCap PX cap, Sidewinder 16awg air core inductor, and Mundorf MOX resistor. The parallel parts are a poly cap and MOX resistor.

The series woofer circuit uses ultra low DCR Sledgehammer 15awg steel laminate inductor.

Upgrade options are available from the drop down menu. Contact us if you have a specific combination of parts you want to use and/or need them setup for bi-wire/bi-amping. 

Crossovers include hookup sheets.


Crossover Schematic


SB Acoustics SB26CDC-C000-4 Alum-Ceramic Dome Tweeters



SB Acoustics SB15CAC30-8 Ceramic Cone Mid-Bass Drivers