Rocky Mountain 2-Way

The Life That I Have Been Waiting For

Rocky Mountain 2-Way Loudspeaker System


The Rocky Mountain 2-Way Loudspeaker System was designed to be used as mixing monitors.


Flat Frequency Response (1.5dB variation)

Sealed Box Construction Providing Accurate Low Frequency Reproduction

Low Frequency Extension: F3= 55Hz, F6= 45Hz, F10= 40Hz

Active Crossover With Computer Controlled DSP that allows for the maximum control of the speaker system

Absorbent Foam Baffle that combats MF Diffraction and Makes the HF more directional.

Capable of 90-98dB Continuous, 110-115 Peak

1 1/4” Cabinet Construction (13ply Baltic Birch/MDF Composite)

2 1/4 Cubic Foot Volume

Custom Made Grill

Made Proudly In Michigan


Woofer: Seas Prestige 10″ H1411

Tweeter: Seas Prestige 27TDFC, 1″ Silk Dome Tweeter


Exterior: 3/4″ 13-ply Baltic Birch

Interior: 1/2″ MDF


Design Proposal

Drafting Plans


Final Testing Report

Block Diagram:

Block Diagram

Testing Results:

Speaker 2 All Drivers

Speaker 1 All Drivers

Speakers 1 and 2 Differences Pt.1

Speakers 1 and 2 Difference Pt 2

Speaker 1 Polarity Flipped Tweeter

Horizontal Off Axis (Black 0*, Green 30*, Red *45, Blue *60, Red *90)

Vertical Axis Frequency Response (Black 0*,Blue *30, Orange 45*, Green 60*, Blue *90)

Tweeter Horizontal Off-Axis Purple=0*, Orange=30*,Red=45*,Green=60*)

Woofer Horizontal Off-Axis (Blue=0*, Orange=30*, Green=45*, Red=60*)

Tweeter Vertical Axis (Purple=0*, Green=45*)

Woofer Vertical Axis (Blue=0*, Red=45*)

Full System Speaker 2 Step Response

Full System Speaker 2 Impulse Response

Tweeter Step Response

Woofer Step Response

Full System Minimum Phase Response

Woofer Impedance Compared with 8Ohm Resistor

Tweeter Impedance Compared With 6Ohm Resistor

Cross-Over Response

Creative Commons License
Rocky Mountain 2-Way Loudspeaker System by Kenneth G. Stahl III is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Based on a work at

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