Best way to test sub?

[tsenfw 10+ year member]

Just bought a nice reconed RE SX off a fellow site member. Everything looks fine and I want to test it to see if it works. Problem is I haven't built my box yet.

Can I just hook it up to my "220 watt" (LMAO yeah right) sony stereo to test or will this possibly damage one or the other? Will feeding a sub higher frequencies damage it?

The RE is dual 2 ohm, maybe wired at 4 ohm it'll be ok?

*************************EDIT*****************************

Tested the sub here are the funky results:

Well, this is supposed to be a dual 2 ohm voice coil sub. Here are the readings:

1rst voice coil = 2.4-2.5 ohms (stable)

2nd voice coil = 7-14 ohms (sometimes stable sometimes jump all over the place)

Wired paralell = 1.9-2.0 ohms (stable)

Wired series = 18-125 ohms (always stable but different everytime i measure. was 18, 64, and even 125 one time i measured)

Hooked up to home stereo wired in series on the low channel and threw in 60hz tone. Can hear tone ok.

What could be wrong with this sub? Loose wiring in one voice coil?!

Click to read more...

 

[audioholic 5,000+ posts]

Hook a multimeter to it and make sure the coil(s) read the proper impedance. That will tell you if the speaker provides a circuit. if you are worried about a non-linear voice coil alignment, yes you could run the speaker outside a box, at minimal power, to check for motor/suspension/linearity problems. Probably just checking the coil impedance will suffice however.

 

[Pl8er 5,000+ posts]

Take a power cord off of an old electronic device, cut off the end.

Split the cord down the middle making 2 wires. Put one wire in the left side of the surge protector and the right into the other side. Connect the wires to the positive and negative of the sub.

Switch the surge protector to on. PRESTO! You have a sub tester.

ROFL....I'm just playing of course, but figured someone would say this and I thought "why not me"

 

[tsenfw 10+ year member]

Well, this is supposed to be a dual 2 ohm voice coil sub. Here are the readings:

1rst voice coil = 2.4-2.5 ohms (stable)

2nd voice coil = 7-14 ohms (sometimes stable sometimes jump all over the place)

Wired paralell = 1.9-2.0 ohms (stable)

Wired series = 18-125 ohms (always stable but different everytime i measure. was 18, 64, and even 125 one time i measured)

Hooked up to home stereo wired in series on the low channel and threw in 60hz tone. Can hear tone ok.

 

[tsenfw 10+ year member]

What could be wrong with this sub? Loose wiring in one voice coil?!

 

[audioholic 5,000+ posts]

Your data is flawed. The impedance will not jump around, unless you are moving the cone by hand. Try getting better contact with your electrodes.

 

[10W3dodge96 10+ year member]

It should work if you connect it to your Sony Player