Fi SSD voice coil ?

[R05Nismo 10+ year member]

I got my Fi SSD10 in today. Very nice sub, anyway I ordered a D2 and it doesen't say anywhere what it is. Just on the magnet it says D1 with a black marker. Anyone help me out?

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[ThatChevyGuy 5,000+ posts]

prolly a d1 then. Only way to find out is with a dmm

 

[billabongcr 5,000+ posts]

they wrote mine on the box

 

[R05Nismo 10+ year member]

they wrote mine on the box

Ya, it says D2 on the box. What size box you have yours in?

 

[Lakota 5,000+ posts]

Use a DMM

 

[Decado2 10+ year member]

Dmm Ftw!

 

[R05Nismo 10+ year member]

Ok, I'll use a DMM. If I have it in the box could I test it at the wire cup on the box with it wired in series to see if its 4ohms? Or would I have to test each coil?

 

[Decado2 10+ year member]

You can test the wires I believe. It worked for me.

 

[grimreper912003 5,000+ posts]

just put the dmm prongs into the termianls on the sub...remember D2 is really 1.5 ohm...

 

[R05Nismo 10+ year member]

Well I tested it at the box. Says 2.6 ohms so its a Dual 1 ohm I would think?

 

[filtor1 10+ year member]

Well I tested it at the box. Says 2.6 ohms so its a Dual 1 ohm I would think?

Make sure the cone isn't moving from anything. Other music, a finger, or sitting it on the cone can throw off a reading. 2.6 doesn't sound right to me. Take it out and test each coil. Should only take a sec.

 

[bonesninja 5,000+ posts]

doesn't Fi use 1.4 ohm DCR coils for the 2 ohm model? 2.6 would be just fine...each coil reading 1.3 DCR. SOunds fine to me

 

[filtor1 10+ year member]

woops, I just read he tested at the box. I would varify though.

 

[R05Nismo 10+ year member]

Well I checked each coil today. It reads 1.3 per coil and 2.7 in series. So my amp is really only seeing 2.7ohms?? Because it seems to be pulling a good bit of current.

 

[squeak9798 5,000+ posts]

Well I checked each coil today. It reads 1.3 per coil and 2.7 in series.

Then you have the D2 subwoofer.

So my amp is really only seeing 2.7ohms??

No.

You are measuring the DCR of the coils with the DMM, not the nominal impedance.

http://www.bcae1.com/resvsimp.htm

 

[R05Nismo 10+ year member]

Then you have the D2 subwoofer.


No.

You are measuring the DCR of the coils with the DMM, not the nominal impedance.

http://www.bcae1.com/resvsimp.htm

Ok, thanks. I checked out that site. So now what? I dont even have my component amp hooked up yet and my voltage is dipping down to 12.6 at the amp with music and my lights are dimming with just one 10 sealed run by a PG Ti600.2 I ran the same amp (@ 4ohms) in my old truck with a smaller battery/alt. with no problems.

 

[squeak9798 5,000+ posts]

So now what?

So what now? Let me tell you what now. I'm gonna call a couple of hard-pipe-hittin' niggas to go to work on the homes here with a pair o' pliers and a blow torch. You hear me talking hillbilly boy? I aint through wit chu! Not by a damn sight! I'm gonna get medieval on your ass!

I dont even have my component amp hooked up yet and my voltage is dipping down to 12.6 at the amp with music and my lights are dimming with just one 10 sealed run by a PG Ti600.2

Welcome to the world of car audio //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

You might want to investigate into the "Big 3".

You might have a mechanic examine your electrical system to verify it's performing properly.

You also should verify you have the best possible ground for the amplifier.

Also verify you have the gain/boost/etc set properly so you aren't clipping the amplifier hard.

Lots o' things you can do spending very little money. It won't heal the world and might not entirely cure your problem, but it'll be a good start to verifying your heading down the right path.

 

[R05Nismo 10+ year member]

So what is my amp seeing then? 4ohms?

 

[squeak9798 5,000+ posts]

Depends on the frequency, your enclosure, temperature of the voice coil, etc etc.

Impedance isn't a fixed value. It will fluctuate with all of the variables above and then some. The subwoofer itself will present a load, on average over it's bandwidth, of 4ohm. At resonance it could be 30ohm or more (or less). After it's heated up with loads of power it's impedance across the board will increase some. The enclosure will also alter how the impedance "acts".

Lots of fun stuff //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

But the simply answer that you were probably looking for is "Yes".