Disappointed infinity Kappa 62.11i and Power acoustic RZ4-2000D
#21
Join Date: Aug 2014
Location: Lockport Illinois
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When I had check a few different stock head units of the pre Rushmore bikes that I had done installs on they were showing a distorted signal out at 1/2 volume with a 1k and 40hz test tone using a DD-1
#22
yeah but what does that really mean? that you can't raise the volume passed 1/2.....then why not set the gains there. Was the distortion level the same for high level and low level inputs, what about -5db or -10db test tones. I agree the stock HU is pretty crappy but if that's all a guy has to work with then we should find work arounds or solutions when "just buy another headunit" is not possible.
#23
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yeah but what does that really mean? that you can't raise the volume passed 1/2.....then why not set the gains there. Was the distortion level the same for high level and low level inputs, what about -5db or -10db test tones. I agree the stock HU is pretty crappy but if that's all a guy has to work with then we should find work arounds or solutions when "just buy another headunit" is not possible.
I know most people don't have access to a distortion detector or a scope. Most either use a DMM or caveman method of setting by ear.
Normally after each step on a install after finding the sweet spot I will take down voltage readings for a reference and for some reason I did not do that on the last stock head unit I used on an upgrade.
If I had the numbers I would gladly pass them on.
I do remember the the gains on the sni35 were around the 9:30 to 10 o'clock position with the volume at 3/4.
#27
http://www.wccaraudio.com/smd-distor...ctor-dd-1.html
video here but disregard the second device.
Nice cheap option
video here but disregard the second device.
Nice cheap option
Last edited by Makdaddy; 07-01-2016 at 02:50 PM.
#28
Join Date: Aug 2014
Location: Lockport Illinois
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Install is complete
Bike was an 01 street glide with stock Radio Sounds HU.
PAC SNI 35 line converter
Arc is 125.2 bx amp
Rockford fosgate 6.5 speakers
TESTING EQUIPMENT USED
SMD DD1
BLUE POINT 586 DMM
Using a 1k -10db at 3/4 volume was the happy spot on the head unit (not showing any distortion)
The line out converter was set with same test tone with 1.01 volts (11oclockish) before showing any distortion.
Amp was showing distortion at 20 volts with a clean input signal. I wound up setting the amp at 17.3 vac which was 75 watts rms per the manufacturer.
Note :When Using a stock Radio Sounds HU the Arc 125.2 amp is just about the biggest amp you will be able to fit on top of the HU without any modifications
Bike was an 01 street glide with stock Radio Sounds HU.
PAC SNI 35 line converter
Arc is 125.2 bx amp
Rockford fosgate 6.5 speakers
TESTING EQUIPMENT USED
SMD DD1
BLUE POINT 586 DMM
Using a 1k -10db at 3/4 volume was the happy spot on the head unit (not showing any distortion)
The line out converter was set with same test tone with 1.01 volts (11oclockish) before showing any distortion.
Amp was showing distortion at 20 volts with a clean input signal. I wound up setting the amp at 17.3 vac which was 75 watts rms per the manufacturer.
Note :When Using a stock Radio Sounds HU the Arc 125.2 amp is just about the biggest amp you will be able to fit on top of the HU without any modifications
The following users liked this post:
Gannicus (07-01-2016)
#29
Install is complete
Bike was an 01 street glide with stock Radio Sounds HU.
PAC SNI 35 line converter
Arc is 125.2 bx amp
Rockford fosgate 6.5 speakers
TESTING EQUIPMENT USED
SMD DD1
BLUE POINT 586 DMM
Using a 1k -10db at 3/4 volume was the happy spot on the head unit (not showing any distortion)
The line out converter was set with same test tone with 1.01 volts (11oclockish) before showing any distortion.
Amp was showing distortion at 20 volts with a clean input signal. I wound up setting the amp at 17.3 vac which was 75 watts rms per the manufacturer.
Note :When Using a stock Radio Sounds HU the Arc 125.2 amp is just about the biggest amp you will be able to fit on top of the HU without any modifications
Bike was an 01 street glide with stock Radio Sounds HU.
PAC SNI 35 line converter
Arc is 125.2 bx amp
Rockford fosgate 6.5 speakers
TESTING EQUIPMENT USED
SMD DD1
BLUE POINT 586 DMM
Using a 1k -10db at 3/4 volume was the happy spot on the head unit (not showing any distortion)
The line out converter was set with same test tone with 1.01 volts (11oclockish) before showing any distortion.
Amp was showing distortion at 20 volts with a clean input signal. I wound up setting the amp at 17.3 vac which was 75 watts rms per the manufacturer.
Note :When Using a stock Radio Sounds HU the Arc 125.2 amp is just about the biggest amp you will be able to fit on top of the HU without any modifications