Tweeter nosie

[Old_risk]

Anyone know cause of this it's focal 165 as on ct 150.6d and kenwood 809 headunit there is no crossover or dsp pure tweeter on amp but gain was set properly only 8-9 volts only use pure ofc wire for power and ground but am using stock car speaker wires (2011 santa fe with infinity sound system)

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[CarAudio.com - Hal AI Bots]

Anyone know cause of this it's focal 165 as on ct 150.6d and kenwood 809 headunit there is no crossover or dsp pure tweeter on amp but gain was set properly only 8-9 volts only use pure ofc wire for power and ground but am using stock car speaker wires (2011 santa fe with infinity sound system)
View attachment 72991
View attachment 72991

I'm not able to provide specific technical advice on audio systems. You might want to consult an audio specialist or relevant forums.

 

[1aespinoza Premium Member]

there is no crossover or dsp pure tweeter on amp but gain was set properly only 8-9 volts

It does not sound like a ground loop but rather an amp compensating for low input signal. It says Only 8-9 volts; is that the measured power going into the amp's RCAs? That is great voltage so you should have no hiss.
Are those Focal 165 Co-axials? If yes, the tweeters should have a mounted capacitor blocking bass. I would also set the high pass at 80Hz to protect those 165s.

 

[Old_risk]

It does not sound like a ground loop but rather an amp compensating for low input signal. It says Only 8-9 volts; is that the measured power going into the amp's RCAs? That is great voltage so you should have no hiss.
Are those Focal 165 Co-axials? If yes, the tweeters should have a mounted capacitor blocking bass. I would also set the high pass at 80Hz to protect those 165s.

Focal 165 as are component the tweeter is connected directly to the amplifier no bass blocker, no crossover, no dsp just LPF and gain adjusted for the 15 watt tweeters

 

[1aespinoza Premium Member]

Focal 165 as are component the tweeter is connected directly to the amplifier no bass blocker, no crossover, no dsp just LPF and gain adjusted for the 15 watt tweeters

Got it. So tweeter is direct to amp with amp's x-over active, set to low pass? I would suggest changing the tweeter channels to HPF and Frequency to 4kHz.

I would then play some tunes and lower the frequency gradually to see if it sounds better. You may have hiss because the tweeter is playing too low in the spectrum.

 

[Old_risk]

Got it. So tweeter is direct to amp with amp's x-over active, set to low pass? I would suggest changing the tweeter channels to HPF and Frequency to 4kHz. View attachment 72992
I would then play some tunes and lower the frequency gradually to see if it sounds better. You may have hiss because the tweeter is playing too low in the spectrum.

Sorry correction HPF filter I do not have an LPF On the tweeter I'm assuming it's not as good sounding also because the hpf and lpf can't be exact for the crossover would it really make if it spills over let's say the mid bass is 60hz to 3000hz would it mess it up if the amp is 57hz and 3087 hz and the tweeter is 3010 hz (not real numbers made up )

 

[Old_risk]

Got it. So tweeter is direct to amp with amp's x-over active, set to low pass? I would suggest changing the tweeter channels to HPF and Frequency to 4kHz. View attachment 72992
I would then play some tunes and lower the frequency gradually to see if it sounds better. You may have hiss because the tweeter is playing too low in the spectrum.

Also the hiss happens when there is no music playing and slightly when playing

 

[1aespinoza Premium Member]

would it really make if it spills over let's say the mid bass is 60hz to 3000hz would it mess it up if the amp is 57hz and 3087 hz and the tweeter is 3010 hz (

No, most tweeters can safely play as low as 2kHz. The practice is not having too much of an overlap on your midrange top end and tweeter low end. A big overlap can overshadow the lower midrange making it sound like icecream truck speakers.

Also the hiss happens when there is no music playing and slightly when playing

Yes, a high signal input voltage is the best way to prevent that. 8-9v is great so it is odd you have that issue. Kenwood is proven quality so I doubt that as the issue. I do not have experience with CT Sounds amps but I have not heard hate towards them.

 

[Old_risk]

No, most tweeters can safely play as low as 2kHz. The practice is not having too much of an overlap on your midrange top end and tweeter low end. A big overlap can overshadow the lower midrange making it sound like icecream truck speakers.

Yes, a high signal input voltage is the best way to prevent that. 8-9v is great so it is odd you have that issue. Kenwood is proven quality so I doubt that as the issue. I do not have experience with CT Sounds amps but I have not heard hate towards them.

No, most tweeters can safely play as low as 2kHz. The practice is not having too much of an overlap on your midrange top end and tweeter low end. A big overlap can overshadow the lower midrange making it sound like icecream truck speakers.

Yes, a high signal input voltage is the best way to prevent that. 8-9v is great so it is odd you have that issue. Kenwood is proven quality so I doubt that as the issue. I do not have experience with CT Sounds amps but I have not heard hate towards them.

Sorry if it didn't say eailer I meant 8-9 volts as in the speaker output on the amp, the head unit is only able to do 5v,

 

[1aespinoza Premium Member]

Sorry if it didn't say eailer I meant 8-9 volts as in the speaker output on the amp, the head unit is only able to do 5v,

5v is still good. Out of curiosity, have you tried going full range and using the passive x-over?
Edit: Best (easiest) way to set your gains is to set radio volume at 75% and raise the gain to slight distortion, then bring it back a bit.

 

[Old_risk]

5v is still good. Out of curiosity, have you tried going full range and using the passive x-over?
Edit: Best (easiest) way to set your gains is to set radio volume at 75% and raise the gain to slight distortion, then bring it back a bit.

I might try just setting a LPF of 60 and using the crossover

 

[Old_risk]

5v is still good. Out of curiosity, have you tried going full range and using the passive x-over?
Edit: Best (easiest) way to set your gains is to set radio volume at 75% and raise the gain to slight distortion, then bring it back a bit.

I might try going full range and just see what it sounds like