Heptone

Heptone


Designer:
Gordontownman

Project Category:
Portable Speakers

Project Level:
Beginner

Project Time:
1-8 Hours

Project Cost:
$100 – $500

Project Description:
Furniture grade high quality portable speaker

Design Goals:
Excellent sound quality, complement to living room, bedrooms, den use, Bluetooth for easy connectivity battery operated with at least 10 hours of playing

Driver Selection:
290-224

275-025

290-213

Enclosure Design:
Solid mahogany, 7/8 inch, 2 chambers, seperates with passive radiators, compact, aesthetically pleasing, no grille design, 18x6x8 inches, cabinet opens on the bottom, uses a plate in the back for volume control, charge port and Bluetooth antenna, easy open Because of battery power

Enclosure Assembly:
Screwed and glued, furniture finish, had a carpenter custom made it to my specs

Crossover Design:
Minidsp kit (changed midstream from a passive x/over as I wanted a flexible tone control option)

Tips & Tricks:
Double sided tape to mount electronic parts, plug ins between components for easy removing and upgrading / servicing

Conclusion:
Sound quality is excellent to my ears, volume is very satisfying, love the looks of this projectm, alsways been a titanium dome tweeter fan, first time using soft domes and really enjoy them, overall am very pleased with the results

About the Designer:
Car salesman by day, hobbyists by night, love high quality sound output in music reproduction, early 50’s dad
Project Parts List:

Dayton Audio ND91-4 3-1/2″ Aluminum Cone Full-Range Neo Driver 4 Ohm
Dayton Audio ND16FA-6 5/8″ Soft Dome Neodymium Tweeter
Dayton Audio ND105-PR 4″ Aluminum Cone Passive Radiator
Penn-Elcom F1633 Rubber Cabinet Foot 1.125″ Dia. x 0.5″ H
Parts Express Hex Drive M6 Barbed Body Insert Nuts 20 Pcs.
2.5mm Panel Mount DC Jack
Penn-Elcom D0946K Blank Dish Black 4″ x 4-3/8″
Sure Electronics AA-AB32231 2x8W at 4 Ohm TPA3110 Class-D Audio Amplifier Board
miniDSP 2×4 Kit Digital Signal Processor Assembled Board
Dayton Audio PMPC-3.3 3.3uF 250V Precision Audio Capacitor
Switchcraft EHUSBBABX USB B to A EH Panel Mount Connector with 4-40 screws
10K Linear Taper Potentiometer 1/4″ Shaft
Penn-Elcom M1320C Brass Amplifier Knob Chrome

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