Hollywood Theatre Virtual Organ Project

Hollywood theater facde 3 Manual custom console The VTPO at work

Hollywood Theatre

Portland, Oregon

 


About the Beverly Ruth Nelson Memorial Organ

The Columbia River Theatre Organ Society is in the process of installing a theatre pipe organ in the historic Hollywood theater in Portland. This installation is progressing but it may be several years before the pipe organ is actually playing. A Ken Crome built Wurlitzer replica console was purchased for the pipe organ. This console had been attached to some Devtronix analog electronics in its past. 
    As there are many scheduled silent picture events and other opportunities at the Hollywood, it was decided to install a virtual organ as an interim instrument. After some research and experimentation, the Hauptwerk virtual pipe organ software was chosen for the instrument. Hauptwerk was chosen as it is the most advanced PC based virtual organ software available. It is very flexible, stable and has many pipe organ sample sets available for it.    
       The console specification has recently been completely revised with the addition of some 60 new stops and 15 general pistons. 
     This sample set, produced by noted Australian organist Neil Jensen, is the 3/35 set from Key Media Productions.  It currently provides 23 virtual ranks of pipes, along with the typical array of tuned and non-tonal  percussions, as well as sound effects that will be used  for the accompaniment of silent pictures.
     The organ loudspeakers repose in the original pipe chambers on either side of the proscenium. The audio system configuration is listed in the table below, and consists of 12 audio channels that includes a bi-amplified subwoofer pedal channel.    
     Noted theater organist Donna Parker played the dedication recital. Future Hollywood theatre events using the virtual  organ are scheduled, including silent films.  
     Recent upgrades and additions to the instrument  include the addition of a second Tibia Clausa and Vox Humana, Horn Diapason Celeste, and Vibraphone, and a software based reverb. A second sub woofer has been added in parallel with the original sub, so there is a subwoofer on each side of the stage.      

About the Hollywood theatre

Opened on July 17, 1926, the Hollywood theatre has continuously remained a beloved Portland landmark and community treasure — even inspiring the name of the surrounding Hollywood District. With over 1500 seats, the theatre was one of the most ornate neighborhood theatres in the Pacific Northwest, readily identified by its unique Byzantine rococo tower. The art deco interior, with its false balconies and balustrades remains today, and are currently being restored under the enthusiastic supervision of Film Action Oregon.

 A highlight of the theatre when first opened was its $40,000 Wurlitzer pipe organ, used to accompany the movies and to augment the vaudeville acts. In 1955, the 3/10 style “H” Wurlitzer was moved to the Imperial skating rink in Portland, Oregon.  The original pipe chambers still exist and CRTOS is in the process of refurbishing and installing a new Wurlitzer pipe organ in those chambers.  


Technical Data:

Computer:

  • Dell 7010
  • Intel I5 Core quad processor 
  • 8 Gb DDR3 RAM
  • 1394a output card

Audio and MIDI interfaces:

Software

Audio system

  • Subwoofers custom built by Gary Nelson

  • Amplifiers are QSC GX3 and GX5, and
      ART pro audio  SLA-4 

  • ART pro audio PS8 power sequencer (remotely powers up amplifiers from console)

Console

  • Custom Built by Charles Sutton, enhanced by Ken Crome, Reno Nevada

  • Internal console wiring by Mike Bryant

  • Organ electrical system designed and specified by Randy Rock

  • Uniflex Combination action

  • Syndyne SAMS

  • Robert Morton keyboards with Accomp. 2nd touch 

  • 32 note AGO pedal board

  • 15 general pistons 

  • Set and general cancel pistons

  • 99 combination levels

  • Piano pedals for crash and drums rolls 

  • Custom junk drawers for selective percussions and combination level controls

 

 

Audio system description

Amplifiers and audio interface

All audio equipment and the Dell PC is installed in a 6' high equipment rack in a room behind the stage. This includes the Echo Audiofire 12 sound interface unit. The PC keyboard, video monitor and mouse are remoted in the console. This connection is an ordinary cat 5 LAN cable thru a KVM repeater. There are two separate and dedicated AC power feeds for the amplifier rack and another for the console. Also included in the audio rack is a ART pro audio power sequencer that powers up and down the amplifiers in one second intervals when the console power is activated or deactivated.    

Speakers

The speakers reside in the original pipe chambers and project thru the grill work. Each speaker in its group is spaced about 3-4 feet apart. The speakers were custom built by Gary Nelson of Vancouver, Washington. They are a 3 way system with a 15" woofer, 8" sealed mid range and Horn tweeter. Crossover points are 500 and 4000 Hz. The cabinets are a bass reflex design, dual 3" ports, tuned for about 45 Hz resonance.

Subwoofer / pedal channel system  

These are ported enclosures with two 15" drivers in each cabinet, which are about 12 cubic feet in volume. Each subwoofer system is fed from a separate 1000 watt amplifier and bi-amplified with an electronic crossover, set to 80 Hz. The treble end speakers are JBL JRX 12M.  

Audio Groups

Intermodulation distortion occurs to some extent on all loudspeakers and can be heard most easily when playing major or minor thirds on a bright reed like a Trumpet or Post Horn thru the same speaker. The resulting sub and super tones produced are not harmonically related to either one of the original tones. This distortion is very annoying and unmusical. That is why the CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED and the "TONE MATCHING 2" configuration is used, so major and minor thirds never come from the same speaker and octaves of the same rank also never come from the same speaker. Further discussion of IM distortion is found here.

Reverb

Reverb is added by using software instead of a standalone reverb unit. Hauptwerk 4.0 provides a VST link that can be used in a VST host. In this case, Ploque Bidule is used. The VST reverb application used is Arts Acoustic. This is a algorithmic type reverb and has many preset reverb programs resident. Two instances are used, each one fed from either the Solo or Main reverb send in Hauptwerk. See picture below.

Custom made GN-15 3-way speakers

main speakers projecting thru swell shade opening. The speaker platform is made from a Morton 16' Bourdon.

Amplifier rack

Junk Drawer

MIDI Configuration

Since Uniflex is used as the relay, the Hauptwerk organ definition file and graphics associated with it are not used. The MIDI outputs from Uniflex are ported to the MIDI inputs of Hauptwerk using a virtual MIDI cable, in this case the LoopBE software application. There are rank outputs on the Uniflex system that are connected to the rank inputs of Hauptwerk. Hauptwerk is used as a "box of ranks" in this case. There are other MIDI control inputs that turn on and off the tremulants and connect to the swell box controls.  

 

 

Morton Keyboard stack with 2nd touch

 

 

Audio Routing

Audio Group  

Rank

  Echo Audio Output Channel/
Speaker #

Amps

Speakers
Main 1 CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED Salicional (notes36-68) Tuba Horn(notes 24-68) Quintadena(notes69-96) Flute celeste Tibia Clausa (m)((notes 36-68)) Oboe Horn(notes 61-96) VDO Harp 1-2 QSC GX3 A GN-15 x2
Main 2 CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED Salcional Celeste Open Diapason Quintadena(notes36-68) Piano(notes 69-108) Tibia Clausa (m)((notes 69-108)) Oboe Horn(notes 24-60) VDO Celeste Chrysoglott 3-4 SLA-4 A ,bridged 2 channel mode GN-15 x2
Main 3 CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED Salicional (notes69-120) Tuba Horn(notes 69-96) Concert Flute Piano(notes 24-68) Clarinet Vox Humana (m) Special sounds   5-6 SLA-4 B ,bridged 2 channel mode GN-15 x2
Solo 1 CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED English Horn Kinura Saxophone(notes 36-60) Vox Humana Solo String Celeste Horn Diapason Vibraphone Xylophone 7-8 QSC GX3 B GN-15 x2
Solo 2 CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED Brass Trumpet Orchestral Oboe Saxophone(notes 61-96) Tibia Clausa(notes37
-120)
Solo String Horn Diapason Celeste Traps Glockenspiel 9-10-11 SLA-4 C , 4 channel mode GN-15 x3
Pedal CYCLE WITHIN OCTAVE, OCTAVES AND RANKS CYCLED   Diaphone(notes 24-42) Bourdon(notes 12-36) Tibia Clausa(s)(Notes 24-36) Chimes       12 QSC GX5/ SLA-4 C, channel 4 Sub Woofer/ JBL JRX 12

There is no such thing as "string channels" or "reed channels" in this VTPO set up. That is a paradigm that belongs to obsolete electronic organ building. Dedicating a channel or group of channels to one rank or type of rank leads to the same inefficiency that pipe organs have, in that most pipes are silent when playing small combinations. If channels are dedicated to strings, as an example, they are silent when not playing strings. All that expensive hardware just gathers dust during that time. The current audio configuration is designed to reduce IM distortion and spread ranks over multiple speakers systems to maximize realism.  In addition, no string or flute unisons and celestes originate from the same audio group. The celestes are allowed to mix acoustically. When coming from the same speaker, celestes sound very "electronic".   

Another consideration to group assignments was to separate the big reeds (English Horn, Trumpet, Tuba Horn) so each rank comes from a different audio group. Same for the color reeds, etc. Example, the Main Clarinet and Oboe Horn come from different groups. In the Solo, the Orchestral Oboe and saxophone are separated. All the tuned percussions such as Piano, Harp and Chrysoglott all come from different groups.  

 


A full schedule of first run movies is available.
Silent films and special events are announced when available.

There is more information about the Hollywood Theatre on the following web site: http://www.hollywoodtheatre.org.
To access a current schedule of events at the Hollywood Theatre: http://www.hollywoodtheatre.org/frames/welcome.htm

To read a history of the original Hollywood theatre pipe organ, go to the following PSTOS web pages:
http://www.pstos.org/instruments/or/portland/hollywood.htm,
http://www.pstos.org/instruments/or/portland/imperial-rink.htm,
and
http://www.pstos.org/instruments/or/portland/imperial-rink_dapolito.htm

 

 

 

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