Multi-Purpose Auditorium Sound Reinforcement System Design ECE Spring 2018 Group 4

Transcription

1 Multi-Purpose Auditorium Sound Reinforcement System Design ECE Spring 2018 Group 4 From Left to Right: Derek Tenny, Devin Clausen, Zack Bennett

2 Outline Primary System Design Constraints Venue Illustration System Design Constraints Loudspeaker Selection, Placement, and Rigging EASE Simulation Results Power Amplifier Requirements and Selection Signal Processing Requirements and Selection Mixing Console Requirements and Selection Microphone Requirements and Selection Signal Path Wiring Diagram Rack Requirements and Design Cabling and Wiring Requirements System Component List and Street Price Estimate Summary and Recommendations

3 Primary System Design Constraints Generic fan-shaped auditorium with seating for 6000 (approx main floor, st balcony, nd balcony) Minimum SPL of 105 db at back row of (main floor) seating No more than ±5 db variation in SPL over the entire seating space for the 500 Hz, 1 KHz, 2 KHz, 4 KHz, and 8 KHz frequency bands Frequency response of 40 16,000 Hz ± 5 db %ALCONS no greater than 10% over entire seating space Minimum 48-channel mixing console Minimum of 4 separate monitor mixes (and corresponding monitor loudspeaker systems) Support for 20 compatible wireless microphone channels Good assortment of general-purpose wired and wireless microphone systems Digital media recording/playback capability All equipment mounted in rack cabinet(s) Budget of $500,000

4 Venue Illustration

5 Venue Description Fan-shaped Seating Main Floor: 3,657 seats 1st Balcony: 1,509 seats 2nd Balcony: 722 seats Room Data Volume: m³ Length: 66 m Back Wall width: 104 m Stage width: 38 m Surface Treatments Ceiling: gypsum board Walls: 80% absorptive material Back wall: wood diffuser Floors: Carpet over concrete

6 System Design Constraints Minimum SPL of 105 db at back row of (main floor) seating Front line arrays well aimed and delays to reinforce when necessary in the balcony shadows No more than 5 db variation in SPL over the entire seating space for the 500 Hz, 1 KHz, 2 KHz, 4 KHz, and 8 KHz frequency bands Adjusting aiming angles and shape of front array to balance out intensity on main floor to balconies %ALCONS no greater than 10% over entire seating space Proper acoustic treatment and loudspeaker distance Frequency response of 40 16,000 Hz 5 db Budget of $500,000 Given the size of the budget, going over was not a huge concern

7 Loudspeaker Selection, Placement, and Rigging Front of house line arrays: Renkus-Heinz STLA/9 2x10 line array Specifications Sensitivity: 1.2 V for rated power output Freq Response: 45 Hz-18kHz Powered by PM-3R amplifier module

8 Loudspeaker Selection, Placement, and Rigging Delays: Renkus-Heinz CF121 Specifications Sensitivity: 1.0 V for RPO Max SPL: 128 db peak Freq Response: 70 Hz-18 khz Subs: Renkus-Heinz ST5L Specifications Sensitivity: 104 db Max SPL: 143 db peak Freq Response: 40 Hz-500 Hz

9 Loudspeaker Selection, Placement, and Rigging

10 Loudspeaker Selection, Placement, and Rigging Delays and Subs load-rated shoulder eye bolts into UMH attachment points Line Array RHANGSTLA Fly Bar coupled with the two-point anglesetting system on Renkus-Heinz Line Array modules RHANGSTLA Tie Bars and Quick-Disconnect pins provide a choice of splay angles and metal-to-metal reliability

11 EASE Simulation Results %ALcons Total 500 Hz Total 1 khz

12 EASE Simulation Results Total 2 khz Total 4 khz Total 8 khz

13 Power Amplifier Requirements and Selection All of the speakers we went with were self-powered, removing the need for an external amplifier and simplifying system connectivity Alternatives would be a Crown 1250 power amplifier with dante Having dante would help system coherence Would only be viable with passive speakers such as the TRX81 s.

14 Signal Processing Requirements and Selection Requirements Economical Minimum of 28 Outputs 2 Subs 2 Arrays 2 Mid House 6 per Balcony 4 Stage Mixes Connectivity Dante Enabled Symetrix Edge Easily Expandable and Changeable vie Card Slots Ability to delay and tune each speaker Cost: $3,125

15 Signal Processing Alternatives Considered London Blu Pros Network Capability Widely Used Reason for not Selecting Higher Cost QSYS Pros Network Capability Widely Used Ability to used QSYS enabled amps and less main DSP proseccing Reason for not Selecting Higher Cost

16 Mixing Console Requirements and Selection Requirements Economical Minimum of 48 Inputs Minimum of 9 Outputs Dante Enabled Ability to record and playback digital media Digico S31 48 Inputs Dante Connectivity Network Connected Stage Boxes Cost Board: $10,165 2 Stage Boxes: $11,988 Orange Box (Networking): $2,875

17 Mixing Console Alternatives Considered Avid Venue SC48 Higher cost, similar abilities Yamaha CL5 Much higher cost, similar abilities Interface preference

18 Microphone Requirements and Selection Microphone selection rationale and alternatives considered Requirements Ability to mic a wide assortment of acts Choir, bands, speakers, and a variety of instruments Assortment of wired & wireless Minimum of 20 channels of wireless mics Three Main Categories Required Wireless for vocals and speakers Dynamic Condensers

19 Microphones Selected - Wireless Receiver Shure ADQR Pros Trusted Brand Will work with the the upcoming ADX series (longer window before becoming obsolete) Network Control Dante Connectivity Easy connection Redundancy Cons More Expensive than traditional ULX System Cost $6,000 per 4 channel unit Total of $24,000

20 Microphones Selected - Wireless Handheld Shure AD2.SM58 Pros Established sound and durability of wired SM58 11 hours of Battery Life Will work with the the upcoming ADX series (longer window before becoming obsolete) Cons More Expensive than traditional ULX System Cost $889 per unit Total of $17,780

21 Microphones Selected - Wired Shure SM57 Pros Rugged Suited for Instruments and Vocal Cons... Cost $99 per unit $990 for 10 Units Shure PGA Kit Pros Variety of 7 Mics for a drum kit Purchasing two in order to backline bands Cost $499 per kit $998 for 2 kits

22 Microphones Selected - Wired Condenser Shure KSM44A Three options for polar pattern Suited for Instruments and Vocal Cost $999 per unit $3,996 for 4 Units AKG C414 Five options for polar pattern Suited for Instruments and Vocal 3 Attenuation Levels 3 Bass-cut filters Cost $2,249 per matched pair $4,498 for 4 mics

23 Microphones Selected - Area Mics Crown PCC-160 Multiple uses including floor, ceiling mount, & pianos. Able to be used discreetly. Cost $349 per unit $3,996 for 4 Units Sennheiser MKH 416 Standard in radio, film, broadcast. Compact Ability to pick up sound from a small area from a far distance Cost $999 per matched unit $3/996 for 4 mics

24 Alternative Microphones Considered Shure ULX Wireless Systems Pros Widely Used Lower Cost than AD or ADX series Reason for not Selecting No Dante Connectivity Will be phased out sooner than newer series Rapid loss of legally available frequencies Sennheiser 2000 Series Wireless Pros Cardioid Dynamic Capsules Reason for not Selecting Cost per channel No Dante Connectivity

25 Listening Assistance System Sennheiser Mobile Connect Phone Based Assisted Listening No staff demands High Quality Compatible with Hearing Aids Cochlear Implants Headphones/Earbuds Connects to Facility Wifi Unlimited Number of Listeners Cost: $11,000

26 Onstage Monitors Sennheiser EW IEM 2 Receivers Per Channel Less Stage Noise More Customized Mixes Stereo Mixes Cost $99 per channel & 2 receivers Total of $6,400 for 4 mixes Shure SE215 Comfort Fit Quality without Bleed Cost $99 per unit Total of $792 for 8 units

27 Signal Path Wiring Diagram

28 Rack Requirements and Design Racks 3 racks total (Front of house, stage left, and stage right) 2 size- Smaller (8ru) and larger (18ru) Six Step Power Sequencer 1. Cisco 2. Board, and SD racks 3. Microphone receivers 4. Senniher Connect 5. Speakers 6. Allows for flexibility

29 Rack Design 1.BLUE 2. RED 3. GREEN 4. GRAY 5. SPEAKERS

30 Cabling and Wiring Requirements Euroblock to XLR DSP to Speakers CatV Dante XLR Wired Mics Madi Stage boxes to orange box

31 System Component List and Street Price Cost Estimate - Mic & Mixers Item Manufacturer Model Ins Outs Unit Price Quantity Total Notes Mixer Digico S31 48 $10, $10, FOH Console Stage Box Digico SD Rack $6, $6, SVC Room Network Connector Digico Orange Box $2, $2, FOH to network all the above. Mixer Microphones Wired Handheld Shure SM57 1 $ $ Condensor Shure KSM 44 1 $ $3, Wireless Handheld Shure AD2/SM58 1 $ $17, Wireless Reciever Shure AD4Q 4 4 $6, $36, Drum Mics Shure PGA Drum Kit 7 $ $ Multi-Pattern Condensor AKG C414 (matched pair) 2 $2, $4, Shotgun Mic Sennheiser MKH $ $3, Plate Mic Crown PCC $ $1,745.00

32 System Component List and Street Price Cost Estimate - Mic & Mixers On-Stage Monitors In-Ear Wireless Monitors Sennheiser EW $1, $6, IEM Shure SE215 1 $ $ Listening Assistance System Assisted Listening System Sennheiser Connect Station 4 $11, $11, DSP Symetrix Edge $3, $3, Gigabit Switch Cisco SG $ $ Power 6-Step Sequencing Middle Alantic PDS-620R 1 6 $ $ Half-sized rack Gator GRSTUDIO8U $ $ u rack Middle Alantic BGR-19SA-27 $ $ DSP Racks Loudspeakers Main Arrays Renkus-Heinz STLA/9 $10, $10, Delays Renkus-Heinz CF121 $ $13, Subs Renkus-Heinz ST5L $7, $15, Cables 10% $26, $26, Cables To connect all Dante Devices. One switch will be primary and one wil be seconday.

33 Mixer & Components $19,857 Microphones $70,003 On Stage Monitors $7,192 Assisted Listening $11,000 DSP $3,505 Racks & Power $1,825 Totals Loud Speakers $38,946 Cables $26,000 Total $178,328 Remainder $321,672

34 Summary and Recommendations Venue Met seating criteria SPL balanced throughout and SPL high enough (105dB) %ALCONS under 10% as shown above Stayed within budget but with extra funds we could add A More Expensive Board A Monitor Mixer Board More Mics

35 Questions / Discussion