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Speaker + resistor = joy? - help a mom replace a $299 6.5" OEM auto speaker Answered

Hi All,

I come to my dear instructables seeking some basic understanding.  Let me just preface this by the fact that I have no problem getting dirty or cracking things open to try to understand them better- probably  better at taking them apart than putting them back together - but I try...(hubby kids that I always end up with spare parts too).

this leads me to my current problem. The right front speaker in my 2001 sienna minvan decided to blow after much to much green day playing. Yesterday I just couldn't take the awful hissing anymore and popped off the panel to pull out the speaker. I'm kinda used to my old cars where I could pop down to best buy and pickup a new set. Not so with Toyota -

OH NO they have special 2.2 Ohm speakers that are proprietary to Toyota. So I went to the dealsership and was told that a new right front JBL speaker replacement  (model 6689) was going to cost me $299. - you read that right $299 for ONE 6.5" door speaker.

I found a website briefly outlining how to take a plain 4 ohm speaker, get a 1.8 Ohm resistor and be done with it.  -  http://oneilengineering.9f.com/photo5.html - So there are a few questions that I need answered by someone with experience.

1) Is it that simple?  - I may opt for decent replacements and I'll do both door ones so they match ...

2) I can't see from that fellows photos exactly how the resistor is attached - is it just soldered in place bridging the two end where the + /- leads are attached? any existing ibles with closeups? I couldn't find any. is a resistor directional?

3) I read somewhere that if I'm adding the resistor -  that heat will be generated from reducing the current - Is that true? if so - do I have to shield it somehow?

Thank you for any help !!!


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10 years ago

Just use two 4 ohm speakers connected in parallel. That's a load of approx. 2 ohms, which is close enough.

Find a spot to mount the extra speaker and you're done.

Don't sweat a difference of 0.2 ohms. An inductive load (the speaker) changes with frequency, so the load will vary by FAR more than 0.2 ohms during operation--even with the factory speaker.


10 years ago

1) Yes it is that simple.
2) Yes it is soldered across the +/- leads (bridging the two)(Did you click on the picture he gave?  It quite a large closeup).  Resistors are not directional so you don't have to worry about that.
3) Heat will be generated from the resistor, but it shouldn't be so much that you need any special shielding.

Be sure to use a resistor with the specifications given the the link you provided so that it can take the power that is going through it.