Some questions on break-in process, not the norm.

[nismos14 5,000+ posts]

I've noticed some people using pink noise to break in a subwoofer, is this effective? How can a woofer of any kind break in with pink noise? Clearly it won't be mechanically broken in, correct?

Am I missing something?

I figure running music through a sub would be the best way to go. Then you can actually begin to stretch the mechanical parts etc.

Tips,thoughts, advice?

Click to read more...

 

[Pl8er 5,000+ posts]

*ponders*. I would think that a freq. sweep through the range that the sub can handle at the very bottom of the RMS of the sub's capability would make more sense. After about 30 minutes running the tone, bring the power up 1/4 and run the sweep again.

Although I'm not really a big believer on break in of a sub.

 

[bumpin buick 5,000+ posts]

I too don't really beleive in break-in periods but if you think music would be most effective for break-in then I would say go ahead and do that. everyone has there own beliefs on it

 

[daRRski 10+ year member]

Hey

Here is some info ...happy reading...

http://www.audioholics.com/education/loudspeaker-basics/speaker-break-in-fact-or-fiction

daRRski

 

[TeoTorriatte 10+ year member]

The ONLY thing break in does is stretches out the suspension -- something that doesn't really need to be done, but is often done in DIY audio circles to provide for more accurate T/S parameter measurements.

If you want to break the suspension in for measurement purposes (or just because you want to loosen up the suspension for whatever reason), I'd suggest the following...

Since you don't need more than one frequency to accomplish this task, pink noise or music are really not necessary. A sine wave just below the Fs of the driver being broken in is all that is needed -- played at a volume level sufficient to generate a good amount of excursion (to stretch the suspension). The amount of time that it takes to fully loosen the suspension varies from driver to driver -- I've had drivers see very little benefit from break-in, and I've see drivers that experience a 2-3 Hz drop in Fs after an overnight sine wave session.

If you don't care about loosening up the suspension beforehand, then just make sure you have everything wired up correctly (VC's in phase) and let them wang. They will break in naturally over time...

 

[Pl8er 5,000+ posts]

In an electrodynamic driver featuring the usual surround-diaphragm-spider construction, driver suspension mechanical compliance plays a key roll in determining the measured value of various driver parameters. All of these parameters will shift as the mechanical compliance of the driver's suspension shifts in value. The bulk of a driver's compliance shift will occur at the time of initial burn in.

Basically says it all.