Author Topic: REL Strata III - Woofer Replacement  (Read 218 times)

Offline mr_b

REL Strata III - Woofer Replacement
« on: January 12, 2022, 05:38:41 PM »
Hi everyone,

Over the festive season I acquired a defective REL Strata III subwoofer, knowing full well it will take some TLC to get it working again. After a bit of diagnostics, turns out the Vifa woofer is causing the audible distortion and needs repairing or replacing. The plate amp is still in excellent condition with no sign of overheating or abuse.

I've sent the woofer in for repairs and the first attempt has unfortunately not been successful. I'm taking it back to the reputable repair guy to take another look, but in the interim I'd like to hear from the DIY community what options I have should the woofer not be salvagable. Is it viable to identify and fit another woofer? I've hunted around on the internet, but I'm finding it very difficult to find another suitable woofer probably due to my lack of knowledge in this department. Ultimately I need to know/decide if it's worth repairing or whether I should just abandon the project.

What I can say is while I've had it up and running, albeit in low volume, it's sounds like a brilliant sub... just so much tighter than the ported PSB 5i in my HT system.

Here are the tech specs for the Vifa woofer:



Any advise would be more than appreciated.



It's not about the gear, it's about the music... ok ok... it about the gear... no no the music... buuuuuuttt... oh the gear..

Offline fdlsys

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Re: REL Strata III - Woofer Replacement
« Reply #1 on: January 12, 2022, 07:59:21 PM »
Are you sure it's not the amp that is distorting? Easy to check on the o'scope.

If it is the driver, it can only be 3 things, all easily fixable by anyone doing driver repairs. Coil/former, spider (spring), surround.
The four building blocks of the universe are fire, water, gravel and vinyl. Dave Barry
Come back when you’ve lived a little. Miles Davis

Offline mr_b

Re: REL Strata III - Woofer Replacement
« Reply #2 on: January 12, 2022, 08:30:47 PM »
Evening Mike, yes I had the amp tested on an oscilloscope and there was no evidence of distortion. I also connected the woofer to the amp output of my PSB 5i and distortion is there as soon as I crack up the volume to even moderate levels.

Taking it back to Riaan in the morning for another look.
It's not about the gear, it's about the music... ok ok... it about the gear... no no the music... buuuuuuttt... oh the gear..

Offline fdlsys

  • Vinylist, DIYer
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Re: REL Strata III - Woofer Replacement
« Reply #3 on: January 12, 2022, 08:55:20 PM »
:thumbs: Good luck. Perhaps ping Andre @Kent Kassler for ideas, suggestions...
The four building blocks of the universe are fire, water, gravel and vinyl. Dave Barry
Come back when you’ve lived a little. Miles Davis

Offline mr_b

Re: REL Strata III - Woofer Replacement
« Reply #4 on: January 14, 2022, 10:23:08 PM »
Great news. Speaker repair genius Riaan found the issue, performed delicate open heart woofer surgery and brought a dead REL back to life.

Proac's + REL... what a combination!  :Whoohoo:

It's not about the gear, it's about the music... ok ok... it about the gear... no no the music... buuuuuuttt... oh the gear..