Distortion before signal (DD1)

[Nick1]

I recently bought a DD1 from SHCA and tried finding my headunits max undistorted volume. I get distortion way before a signal. All settings are off or flat, I unplugged both RCA’s from the amp and plugged one into the DD1. Im not sure if I have a faulty unit or if my headunit isn’t strong enough for the DD1 to pickup the signal.

 

for reference:

 

Headunit: Boss Audio BE7ACP

Amp: Skar Audio RP1500

sub: Skar EVL 12

RCA’s: Rockville

Edited June 24 by Nick1
Added rca brand

[Joe X]

If the head unit is playing the radio you might get unexpected behavior from the DD-1, play the tones provided and see what it does.

 

Try to listen in what you are sending to the dd-1 to see if there is noise or whatever.

Edited June 24 by Joe X

[Taxed1]

5 hours ago, Nick1 said:

I recently bought a DD1 from SHCA and tried finding my headunits max undistorted volume. I get distortion way before a signal. All settings are off or flat, I unplugged both RCA’s from the amp and plugged one into the DD1. Im not sure if I have a faulty unit or if my headunit isn’t strong enough for the DD1 to pickup the signal.

 

for reference:

 

Headunit: Boss Audio BE7ACP

Amp: Skar Audio RP1500

sub: Skar EVL 12

RCA’s: Rockville

I have the same problem on my kids Pioneer radio. Sometimes my DD1+ doesn’t read the voltage but distorts at 37 out of 40 when using a 0 dB tone. The radio is supposed to have 2.0 volts out of the RCA. If I remember correctly I think if I reboot the DD1+ it reads the voltage on the second or third time. You can check the true voltage of the RCA with a multimeter. Also I think if the voltage is too low it will not display numbers.

[Nick1]

Update:

 

I upgraded my headunit to the Alpine iLX-w670, along with some Stinger 8000 series RCA’s. The issue of getting distortion at not even half volume still persists.

[Nick1]

On 6/24/2024 at 2:46 PM, Joe X said:

If the head unit is playing the radio you might get unexpected behavior from the DD-1, play the tones provided and see what it does.

 

Try to listen in what you are sending to the dd-1 to see if there is noise or whatever.

I use Track 1 to begin and get distortion pretty much right away, with no signal detect. I can hear the audio through my door speakers so I know it’s playing.