*Improving with what I have (audison,hertz,Tru)

[Kastlez_ 10+ year member]

So I'm trying to make the best use of the equipment that I have already purchased. Basically looking for suggestions from experienced members as to how they would setup/run this system (gearing towards SQL for daily use not extreme all out sq build).

Head unit: pioneer deh-x9500bhs

Amplifier: Alpine F6... 150x4 @4ohms

DSP: Audison Bit One

Line Driver/conditioner: Tru technology SSLD6i

Front stage: Hertz 165XL...

2-way active... Mids in stock door location... Tweeters on axis mounted on a-pillars

Rearfill: none

Substage: TC sounds Axis

I have the pioneer running to bit one, out to the tru, out to the amps.

Everything is set with a smd dd-1 starting with the headunit all the way through the system. One question is should I leave the tru line driver gains halfway (this is the max clean signal @full volume) or turn them all the way down (is this still beneficial?) I use this piece mainly for the fantastic line conditioner it is.

Doors and entire trunk are properly deadened with second skin deadened. Tweeters are in DIY pods from a tutorial I found on DIYMA

I only have one main issue that I can't seem to resolve which is 16khz floor noise (humm) that comes through all speakers mainly through the tweeters. I've ran everything as best I could away from power and grounds but still have this annoyance the second the amps and processor turn on.

Any suggestions mainly on tuning and gain matching are much appreciated please feel free to critique.

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[LosIsATool 5,000+ posts]

Is the line driver really needed? Looks like a bit to much going on to me.

 

[Kastlez_ 10+ year member]

Is the line driver really needed? Looks like a bit to much going on to me.

Not necessarily but like I said I am using it mainly as a line conditioner. I can either turn the gains all the way down or remove it completely. Any thoughts?

The system does sound "crisper" with it in there though due to the high quality internal components.

 

[LosIsATool 5,000+ posts]

It should sound crisp enough with only the bit one. What you're hearing could be a few thing but mostly grounds. Also if that pioneer has one of those pico fuses in it you could of popped it. Look up how to ground the RCAs on it. There are a ton of threads

 

[Kastlez_ 10+ year member]

It should sound crisp enough with only the bit one. What you're hearing could be a few thing but mostly grounds. Also if that pioneer has one of those pico fuses in it you could of popped it. Look up how to ground the RCAs on it. There are a ton of threads

I went ahead and removed the the tru line driver and in turn had to increase the amp gains slightly. the sound is still present (similar to a computer fan). All grounds are in great places its just something I've never been able to get rid of.

The headunit is brand new no issues I just put it in 3 days ago. The alpine 9887 I took out made no difference.

 

[keep_hope_alive Premium Member]

sometimes keeping the amp gain at a minimum is preferred, in which case a line driver can help.

evaluate your own system and what you need to control noise. each system is unique. do whatever works.

the noise is probably just the amplifier. it uses digital circuits and a switching power supply - you are probably hearing artifacts from the switching frequency (half of the switching frequency).