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I would dampen the internal cabinet walls with metallic plates glued with silicon, after the paint, make a stronger frontal baffle, two mdf sandwiched with roofing tar, and silicon gaskets. Done with...

I SOLD MY 890 S----IN THE END I QUIT THE TWEAKING WORKS--I HAD MY NEW X OVER COMPONTENTS--300 usd---REFUNDED---I AM A BIT SORRY ABOUT SELLING THEM---I LIKED THE HIGHS-THE USUAL EASY JBL SOUND --THE 4...

You won't hear anything above 16 khz, but I don't quite know why ,the extension to 40 or 50 khz due to cd 's newer dacs adds headroom and breath to the musical content.....actually digital music...

Thanks To Ya All----ya Wonderful!!!!! Clear Intellegible Perrrfect!!!!

thanks, but I don 't need the owners' manual....I need the technical data sheet
like it's showed down below in this page but I need to clearly read the x over values---can't read them now----I...

Thanks For The Manual--can't You Send It More Intelligible????
Or Pdf To My E Mail???? I Can T Read The Values On The One Posted Thanks Or You Re Post A Hi Definition Copy Thanks-----------

Boots 'n' Braces
I Have Opened The L 890's---no Serious Dampeing No Bracing---the Cabinet Box Is Dead Like A Snare Drum!!!! It Is So Silly That A Manufacturer Like Jbl Does Not Spend 20 Bucks On...

I Have Opened The L 890's---no Serious Dampeing No Bracing---the Cabinet Box Is Dead Like A Snare Drum!!!! It Is So Silly That A Manufacturer Like Jbl Does Not Spend 20 Bucks On Internal Bracing And...

Hi there---anybody got the x over schematic for jbl's l 890 ????? just wanna tweak them----thanks rockerxx69