when amping my comps

[06goat 10+ year member]

do I put the speaker wires from the amp to the 'in' on the crossover? Because i jus read the impedance on each set and it comes to 2.5ohms so i dont wanna **** my amp up. amp is a sundown 100.2

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[subzero 5,000+ posts]

Yes.

That Sundown should be able to handle a 2 ohm load per channel. Most two and four channel amps do. Your saying that your comps are rated at 2.5 ohms per side. That is perfectly fine.

List your comps.

 

[DidUHearThat? 10+ year member]

do I put the speaker wires from the amp to the 'in' on the crossover?

That is correct.

Because i jus read the impedance on each set and it comes to 2.5ohms so i dont wanna **** my amp up. amp is a sundown 100.2

Where did you "read" the impedence? On a meter? That is not an accurate measurement. Just use what the manufacturer claims is the nominal impedence. Impedence is frequency dependent and somewhat complicated to understand. So it is expressed as "nominal impedence". A combination of design and complex lab measurments at different frequencies.

Just use the rating on the speaker box or what ever the manufacturer says it is.

 

[06goat 10+ year member]

Theyre the re xxx comps. Reason I ask is because the amps gain is set to about 3/8 turn, but after listening to it for a while i started to smell somethin so i checked the impedance for each side at the amp and they both read 2.5... i just wanted to double check.

 

[06goat 10+ year member]

That is correct.
Where did you "read" the impedence? On a meter? That is not an accurate measurement. Just use what the manufacturer claims is the nominal impedence. Impedence is frequency dependent and somewhat complicated to understand. So it is expressed as "nominal impedence". A combination of design and complex lab measurments at different frequencies.

Just use the rating on the speaker box or what ever the manufacturer says it is.

Ok thanks

 

[DidUHearThat? 10+ year member]

Theyre the re xxx comps. Reason I ask is because the amps gain is set to about 3/8 turn, but after listening to it for a while i started to smell somethin so i checked the impedance for each side at the amp and they both read 2.5... i just wanted to double check.

Lol! Turn that **** down!!!//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

If they were still connected to the amp you were measuring the complete circuit, including the amp. Not just the speaker.

 

[06goat 10+ year member]

Lol! Turn that **** down!!!//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
If they were still connected to the amp you were measuring the complete circuit, including the amp. Not just the speaker.

lol ahh it wasnt THAT loud. but nah i disconnected them before i measured.

 

[DidUHearThat? 10+ year member]

It is common for a "4 ohm" speaker to actually go as low as 2 ohms (or even lower) at certain low freq's but be much higher at other freq's (usually higher freq's). As high as 8 -12 ohms, at certain freq's. Smooth and limited impedence variations is a sign of a quality speaker. Crappy speakers have huge variation that play tricks with crossovers, amps and other speakers in the circuit. You don't have the gear to test this at home.

Quality stable speakers, crossovers and amps are expensive, but worth it.

 

[06goat 10+ year member]

So what are you sayin? the sundown has trouble when my comps go up to 8-12ohms at higher freqs?

 

[DidUHearThat? 10+ year member]

Here is a sample of an impdence graph. This one compares a design model to a tested model in a .5 cu box. If you change the box size, all the graphs change too.

http://www.zaphaudio.com/ZD5-measuredimp-modeledimp.gif

Zaph|Audio - ZD5 - Scan Speak 15W8530K00 and Vifa XT25

 

[DidUHearThat? 10+ year member]

So what are you sayin? the sundown has trouble when my comps go up to 8-12ohms at higher freqs?

No. I'm saying that's perfectly normal, your sundown will have no problems.

 

[06goat 10+ year member]

Ok cool thanks for the help man, one of the few people around here that help lol

 

[RAM_Designs 5,000+ posts]

Find out what is stinking. Could just be the crossover.