measured my 9815 pre-outs... (opinions?)

[DBfan187 5,000+ posts]

So i did the test:Eclipse CD-3434

60Hz 0dB sine wave

Vol 59/80 is the loudest unclipped level

Sub out=16/16........Vol 80/80.......bass flat.......2.69V

Sub out=16/16........Vol 80/80.......bass +6/6.....Too clipped I won't test

Sub out=10/16........Vol 80/80.......bass flat.......1.84V

Sub out=10/16........Vol 59/80.......bass flat.......0.24V

you use an oscope?
I also have a CD3434 and a oscope, mine was 74/80 voltage was 1.7v.

 

[Slaugh 10+ year member]

here

the 7893 had stronger voltages than my 9815...

 

[ToyTundra 10+ year member]

you use an oscope?
I also have a CD3434 and a oscope, mine was 74/80 voltage was 1.7v.

No oscope, just a DMM. I used a 0dB wave

 

[DBfan187 5,000+ posts]

so was mine. I used a 1kHz 0dB tone on my nonfading preouts which emits a full range signal(+16).

 

[DBfan187 5,000+ posts]

also, how in the hell can you tell if it's clipped when using a DMM?

 

[ToyTundra 10+ year member]

^^ my door speakers were still plugged in so i could hear some of the Tone through them

 

[DBfan187 5,000+ posts]

ah, makes sense,

//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif You put your speakers life on the line.

 

[ToyTundra 10+ year member]

True. I owe them now. Maybe i'll find some horns they can hump or somthing

 

[DBfan187 5,000+ posts]

ok, just measured my front, rear preouts with the oscope.

1kHz 0dB

NO CLIPPING @ FULL VOLUME!

//content.invisioncic.com/y282845/emoticons/woot.gif.aaa6090e619a97b6090d16dd863c5a69.gif

But the nonfader clips @ volume 74 with it on +16.

 

[AVSTANG02]

Slaugh is never gonna get a clue.

 

[DiamondFanatic 10+ year member]

Slaugh is never gonna get a clue.

Yeah he apparently really hates being able to adjust his volume level.

 

[fuzzai 10+ year member]

Yeah he apparently really hates being able to adjust his volume level.

Wait till he relizes his amps don't produce the 500wrms predicted at 14.4 volts on 25 volume. lol

 

[killcrap 10+ year member]

correct me if i'm wrong, but if i recall correctly, when the manufacturer advertizes 4v, they always mean 4vMAX, not 4vRMS

 

[3.5Max6spd 10+ year member]

correct me if i'm wrong, but if i recall correctly, when the manufacturer advertizes 4v, they always mean 4vMAX, not 4vRMS

Correct, and voltage is delivered in an algorithmical fashion...doesnt mean that at half volume you'll see half total rated voltage

 

[thch 10+ year member]

you are correct.

typically you will have a 1-3dB change per click.

-1db = 0.89

-5dB = 0.56

-10dB = 0.32

depending on the hu, you might be able to determine where clipping occurs by plotting the volume settings vs log(V). you would assume you'd have straight lines anytime the voltage inceased logritmically (by 1dB or 2dB per click). but if there were clipping, you would meause less of a change.