what the difference between 0db, -3db, -6db etc test tones?

[OmegaBunny 10+ year member]

besides the dbeez?

Will using one over the other cause problems with the system? Say will settiong gains with a -6db tone pose more of a risk than a -0bd if using a dmm?

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[Engine_hp 10+ year member]

i read/heared that no song out there hit -6db so if ur using the -6db with a dmm ur still on the safe side, c can also use the 0db but the sound will be low to ur hearingz.

 

[AudioDave]

besides the dbeez?
Will using one over the other cause problems with the system? Say will settiong gains with a -6db tone pose more of a risk than a -0bd if using a dmm?

- means your cutting it --- + means your boosting it

 

[ramos 5,000+ posts]

starting at 0db using a passive tweet crossover for an example

0db would be reference level. THis means the tweets play at the same level the mids do.

-3db means the tweets will play 3db lower than reference level ( the mids) or theoretically half as loud

-6db means the tweets will play 6db lower than reference level ( the mids) or theretically 1/4 as loud

So the -db represents how far down from reference level the tones are recorded. A change of 3db Logarithmically represents "twice as loud" to the ear. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[OmegaBunny 10+ year member]

So if I understand correctly, setting your amp with -6 test tone will be louder than 0db test tone. Will this cause damage to the equipment? I am trying to get as much out of my system as possible without damaging anything.

 

[basebalz13 10+ year member]

So if I understand correctly, setting your amp with -6 test tone will be louder than 0db test tone. Will this cause damage to the equipment? I am trying to get as much out of my system as possible without damaging anything.

No. -6 means negative 6. What does negative do? it reduces. And dont use a DMM to set your gains...that does not work.

 

[RetroAudioinc 5,000+ posts]

No. -6 means negative 6. What does negative do? it reduces. And dont use a DMM to set your gains...that does not work.

I have done this for years how does this not work?

 

[OmegaBunny 10+ year member]

how should I do it if I don't use a DMM? BY ear?

***EDIT*** That's the same calculation as I got/ 950 * 2 ohm = 1900 sqrt = 43.5889

 

[basebalz13 10+ year member]

Yes, by ear.

 

[basebalz13 10+ year member]

I have done this for years how does this not work?

Voltage drop, Imp rise, Calibration of the meter, Recording levels, the list goes on...Only way to accuratly do it is with 2 Clamp Meters and a O-scope and start clamping power

 

[James Bang 5,000+ posts]

starting at 0db using a passive tweet crossover for an example 0db would be reference level. THis means the tweets play at the same level the mids do.

-3db means the tweets will play 3db lower than reference level ( the mids) or theoretically half as loud

-6db means the tweets will play 6db lower than reference level ( the mids) or theretically 1/4 as loud

So the -db represents how far down from reference level the tones are recorded. A change of 3db Logarithmically represents "twice as loud" to the ear. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I believe that's 10db. 3db = twice the powa or cone area.

 

[basebalz13 10+ year member]

I believe that's 10db. 3db = twice the powa or cone area.

No, believe its 6 DB to the ear. Lol

 

[James Bang 5,000+ posts]

No, believe its 6 DB to the ear. Lol

3 dB = twice the power (Power respectively intensity - mostly calculated)

6 dB = twice the amplitude (Voltage respectively sound pressure - mostly measured)

10 dB = twice the perceived volume or twice as loud (Loudness nearly sensed - psychoacoustics)

 

[basebalz13 10+ year member]

3 dB = twice the power (Power respectively intensity - mostly calculated)6 dB = twice the amplitude (Voltage respectively sound pressure - mostly measured)

10 dB = twice the perceived volume or twice as loud (Loudness nearly sensed - psychoacoustics)

Oops, I was thinking of something else. You are right.

 

[OmegaBunny 10+ year member]

K so I have 0db, -3db, -6db, and -10db tones. Which sould I use to get te most out of my system without damaging my equipment? Also, for now I need to use the DMM because I have no idea what what I'm listening for and I would rather be safe than sorry.