RCA output low.

[qtipextra 5,000+ posts]

Well the other day I checked the voltage of my RCA's going to my hifonics. My pioneer is supposed to have preouts at 2v. When I metered it, playing a 40hz tone, at maximum volumes I would ever listen, the voltage it only .231 vac, on each channel. The front channel RCA's are .6** Vac at 1khz tone at each channel.

My fade is set more to the back at 7 (Out of 15, which would be only the rear)with a FIE (Front image enhancement that my pionner model has)

What the heck is up with that?

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[zachzchw 5,000+ posts]

The preouts will not do 2 volts all the time.......theres a lengthy thread on the subject floating around somewhere.

 

[Cris 10+ year member]

The preouts will not do 2 volts all the time.......theres a lengthy thread on the subject floating around somewhere.

under the conditions he mentioned, it should.. or close to it. Much like engine horsepower is rated at a very high RPM, maximum voltage is rated at a high volume. The head unit SHOULD output its rated voltage, given its recieving enough juice from the battery and it is playing a tone (such as a test tone) and its near or at max volume.

Have you tried turning it ALL the way up with all enhance ments (bass level, etc) all the way up? Pioneer may simply be stating the max voltage with all features turned on and the hu being pushed as much as possible.

 

[6spdcoupe 5,000+ posts]

Agreed, pushing ALL possible limits of the HU it should produce or at least Very close to its ratings. Also bearing in mind small error percentage due to the DMM if applicable.

 

[msimon 10+ year member]

Are you using 0db tones?

 

[qtipextra 5,000+ posts]

Yep, im using 0db tones. And I have not tried turning it completley up to the max, but I turn it to 45/60. But you would think that 15 volume points wouldnt make that much of a difference, would it?

 

[squeak9798 5,000+ posts]

But you would think that 15 volume points wouldnt make that much of a difference, would it?

Yes, it can. Some volume controls are not linear, they are logarithmic.

 

[qtipextra 5,000+ posts]

Ok, ill check it in a little bit, and see. I never turn it up past 45, because at that point it starts to distort.

 

[qtipextra 5,000+ posts]

but thats exactly what happens. If I turn it up to the full 62 on the volume, I get 2.1vac. Thats crazy. I wish it didnt start to distort at 47.

 

[squeak9798 5,000+ posts]

What distorts, the internal amplifier ?

 

[qtipextra 5,000+ posts]

Yep, the internal amplifiier is what starts to distort

 

[squeak9798 5,000+ posts]

So then externally amplify your speakers //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Refurb Profile amps can be had from their internet store for around $70.

 

[qtipextra 5,000+ posts]

I do, with a stupid jensen amp right now. But when I turn it up past 50, I can really start to hear it. It sounds really crappy, not just the speakers, but the bass sounds alot worse as well.

 

[squeak9798 5,000+ posts]

Is there any reason in particular you were doing this ? Like, was it not getting loud enough for you ? Or were you just curious?

 

[qtipextra 5,000+ posts]

Any reason I was checking the RCA voltage? Well, no not really. One day, I wanted to make sure my outputs were balanced, because it didnt seem as loud. So I checked the voltage, and both were .241. Then I got to thinking about it, and realized that it should be 2.0v. But now I know.

I still think its retarted that I have to have the bass EQ at +6 and the volume all the way up to get to 2v.