THD and Signal to Noise Ratings?
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New member Username: OrdinaryjoeCanada Post Number: 6 Registered: Nov-06 | Hi again, I have decided on a Soundstream amp for my Dodge 4x4 Quad cab with Infinfity Kappa 60.7 CS 2 way component speakers. I am looking for quality sound. I may or may not add a sub. My question is would it be worthwhile to pay a little extra for a better THD and Signal to Noise rating or will it not be noticeable in my truck? The two choices with similar power are below; http://cgi.ebay.com/SOUNDSTREAM-TRA...1QQcmdZViewItem OR http://cgi.ebay.com/SOUNDSTREAM-XTA...oQQcmdZViewItem I can get the latter for $152 so the actual difference is about $27. OJ  |
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Gold Member Username: CarguyPost Number: 5754 Registered: Nov-04 | Your links didn't work for me. Unless the numbers you're talking are singnificant, your ears won't be able to tell much difference. For example, THD of .1% vs THD .01% will sound identical in a car. However, THD/SN/Slew Rate, Damping factor, PS, design quality and install all together will make a difference in SQ. Therefore, don't get fooled by 1 or 2 numbers. |
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Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 3600 Registered: Dec-05 | they're both soundstream, i don't think the difference is going to be that high. Just worry about damping factor more than 200. THD lower than 1% and Signal to noise ratio the higher-better |
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New member Username: OrdinaryjoeCanada Post Number: 7 Registered: Nov-06 | So this one; SOUNDSTREAM TRA680.4 TARANTULA-SERIES 4 x 85W RMS @ 4 Ohms 4 x 170W RMS @ 2 Ohms 2 x 340W RMS @ 4 Ohms Bridged T.H.D.: <0.02% Signal-to-Noise Ratio: >115dB Damping Factor: >500 Frequency Response: 10-50k Input Sensitivity: 0.15V-12.0V Crossover Slope: 18dB Crossover Frequency: 50-5kHz Dimensions: 10.75"x2.25"x20" Variable hi pass, band pass, low pass Variable 18dB bass boost Double sided glass epoxy SMT circuit board PWM mosfet power supply Tri-guard amplifier protection SMT cooling fan built in Tri-mode capable Line output is better than this one; SOUNDSTREAM XTA720.4 No. of Channels: 4 RMS @ 4 Ohms: 90W x 4 RMS @ 2 Ohms: 180W x 4 RMS @ 4 Ohm Mono: 360W x 2 T.H.D.: 0.05% Freq. Response: 10 - 30k Signal-to-Noise Ratio: >96dB Damping Factor: >200 Input Sensitivity: 200mV Crossover Slopes: 12dB Subwoofer EQ: 0 - 18dB Dimensions: 24.9"x12.4"x3" Is it worth the extra $27 given the THD S/N and >500 damping? OJ } |
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Gold Member Username: Dustin3Tigard, OR U.S. Post Number: 4354 Registered: Oct-05 | i would get the first one, but you wont hear any noticable diference in sound really. maybe a little bit |
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