1. Home Theater Pre-AMP Team #4 Title Christopher Merkl Negar Farzinnia
Joel Mawhinney
Joshua Koch
Tin Luu
Joseph Vu

2. Expertise and Experience
Home Theater Pre-AMP
Expertise and Experience
Negar
Expertise: Circuit Design, Analog Electronics
Experience: 2 years Rockwell Automation
Chris
Expertise: Digital design, VHDL, analog electronics
Experience: Audiophile enthusiast
Joel
Expertise: Microprocessors, circuit design
Experience: Industrial controls Eaton, 1 year

3. Expertise and Experience
Home Theater Pre-AMP
Expertise and Experience
Joshua
Expertise: Verilog, Atmel assembly
Experience: Hobby work
Tin
Expertise: circuit, amplifier, communication, signal processing
Joseph
Expertise: Digital design, computer I/O, Technology
Experience: 3 terms Pentair water

4. Home Theater Pre-AMP Abstract
The design is a digitally controlled six channel A/V pre-amplifier. Unlike most pre-amplifiers which only match an audio source to the corresponding video source, this design will allow for decoupled input selection. Any audio source can be matched with any video source. The Decoupled Mode will also allow for a mixed or rotated sound field. Separate audio programs can be sent to the front and rear channels.

5. Home Theater Pre-AMP Features
Six channel Home Theater A/V Per-amplifier
Coupled input selection
Decoupled input selection
audio and video mixing
rearrangement of the sound field
Independent front and rear source matching
Presets for Decoupled Mode
Input Source Level Matching
Independent channel level adjustment
Input down-mix for subwoofer channel
Dot Matrix display

6. Product Performance Requirements
Nominal Input Power
120 VAC, Hz
Power supply Output
± 12 VDC, + 5 VDC
Display
2 x 20 Character Dot Matrix
Character Height
15 mm
Refresh Rate
min. 30Hz
Inputs
Audio
1 – DVD, 1 – aux 6 channel, 5 - stereo
Video 4
User
Power, Volume, Mode Select, Input Select, Adjustment, Presets
Outputs
6 - channel, 1 - Stereo Line Out
1 – Line Out, 1 – Monitor Out

7. Product Performance Requirements
Input Sensitivity
250 mV
Output Level
1 V
Bandwidth
10Hz to 20kHz –3dB
THD + Noise
1kHz < 1%
Signal to Noise Ratio
100 dB
Channel Cross Talk
- 60 dB
A/D Conversion
400kHz / 12 bit
Low-pass Cut-off Frequency
Adjustable – 50 to 150 Hz
Modes of Operation
Off/Standby, Coupled, Decoupled, Mute

8. Product Standard Requirements
Production/Prototype
Production
Prototype
Cost/Unit
$200
$350
Parts Count
200 ==> 500
Product Size
18W X 5H X 10D (in)
Product Weight
3kg
5kg
Power Consumption (max)
20 W
Operating Temp Range
-10°C to + 45°C
Operating Humidity Range
(rH%) – non condensing
Reliability/Life/Maintenance
20 Year
10 Year
Disposal/Recycle
Hazardous waste disposal / non-recyclable
Safety/Regulatory Standards
UL1270 / CSAC22.2 No.1 / ESD Immunity
RF Immunity / M-Fields

9. Home Theater Pre-AMP Block Diagram Video Input/output switching Power
1 Line Out
1 Monitor Out
4 Inputs
Power
Supply
6 channel Output
Stereo Line Out
Selected Input
To Output Channel
Audio
Differential Input
Input Level
Switching
Audio Output
Channel Gain
Master Gain
8 Inputs
Mux Address
Subwoofer
AD/DA
Filtering
Stereo Input
Stereo Down-mix
Mux Address
Input Gain
Power
Gains
Input Select
Mode Select
Channel Gain / Master Gain
Microprocessor
Memory
Display
Display Driver
Text Data
Control Bits
User Input
Josh
Negar
Tin
Joseph
Joel
Chris

10. Associated Performance Req’s
Analog input and selection
Output leveling and gain
Subwoofer
Micro-processor +memory
Display and driver
User Inputs
Video switching
Power supply
Nominal Input Power X
Power supply Output
Display
Character Height
Refresh Rate
Inputs
Audio
Video
User
Outputs

11. Associated Performance Req’s
Analog input and selection
Output leveling and gain
Subwoofer
Micro-processor +memory
Display and driver
User Inputs
Video switching
Power supply
Input Sensitivity X
Output Level
Bandwidth
THD + Noise
Signal to Noise Ratio
Channel Cross Talk
A/D Converter
Low-pass Cut-off Frequency
Modes of Operation

12. Allocation of Standard Req’s
Analog input and selection
Output leveling and gain
Micro-processor +memory
Display and driver
Video switching
Power supply
Sub-woofer output
Total
% of total cost 20 10
100
Parts count 60 12
222
Component size
43 in2
10in2
50in2
20in2
15in2
4in2
180in2
Component weight
1lb
8oz
2oz
6oz
3.5lb
Power consumption
500mW 1W 2W
200mW
10W
Operating temp
Operating humidity
Reliability/ Life/ Maint.
20yr, No maint.
Disposal/ Recycle
Hazardous non-recyc.
Standard non-recyc.
Safety/ Regulatory stds.
UL1270
CSA C22.2
-2, 3,8