$500 – $1,000
Sound system for Hauptwerk Virtual Pipe Organ conversion of Wicks Opus 6028 1985 Console. Twin ported tone cabinets with electronic crossover and plate amps.
Covers 16Hz to 18Kz capturing the shake of pedal pipes and bark of horizontal trumpets.
This is a biamped system. Woofers are Dayton Series II ST 385-8 (15 inch) #295-130. H.F. drivers are Pyle Pro Audio PDB512 bolt on units #292-2546. Exponential horns are Dayton H812 #270-304.
Ported tone cabinets are resonated at 16.3 Hz with 4 inch Precision Flared Ports #268-352
Enclosures are made from 6 pieces each of 2 x 4 x 3/4 MDF. Front and back are full size pieces. Sides are trimmed 3 inches in depth. The bottom matches size of vertical parts. The top has a 3/4 inch overhand, and is cove-routed to match console trim pattern. Battens are 1 x 2 inch (nominal) stock.
This is a 4 channel system using Linkwitz-Riley 4th order crossover set at 1 Khz. Audio kits EC-24. Tone cabinet plate amps are dual mono amp LM-3886 kits from Chipamp. Torroid power transformers are Avel Y236652 250VA units #122-625.
Sound is generated from the custom computer units hosting Hauptwerk with a M-Audio 2496 low latency stereo sound card.
Tips & Tricks:
MDF finishes to look like hardwood by first doing dry brush streaks with a dark oil stain (MinWax Dark Walnut 2716). This is followed by an overall coat of MinWax Red Walnut 225. Final appearance comes from 3 coats of MinWax water based gloss urethane varnish.
The tone cabinets capture the presence and tonal range of a pipe organ as envisioned.
About the Designer:
Retired Skunk Works aerodynamics engineer.
Project Parts List:
|Dayton Audio ST385-8 15″ Series II Woofer|
|Dayton Audio H812 1″ Exponential Horn 100×60 2-Bolt|
|Pyle PDB512 1″ Titanium Horn Driver 8 Ohm 2/3-Bolt|
|Precision Port 4″ Flared Speaker Cabinet Port Tube Kit|
|Avel Lindberg Y236652 250VA 25V+25V Toroidal Transformer|
|Penn-Elcom 5291 2″ Swivel Caster|
|MDF 2x4x3/4 sheets 12 total|
|M-Audio 2496 low latency stereo sound card|
|Audio Kits EC-24 stereo 4th order electronic crossover|
|Chipamp LM3886 mono amp kits (4), power supplies (2)|