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I like AudioTool quite a lot ( for Android ).

84727

Importantly, it allows the usage of an external mic plugged into your Android phone ( and the loading of a calibration file > if available...

Some Guesses?

(i) The bias control on either A or B ( or both ) channels may need adjusting.

(ii) Also, something may have gone "kaflooey" ( a highly technical term ;) ) within the negative...

Peaking at 85db ( C weighted ) is around my limit for home listening.

I normally listen in the low to mid 70's.


Frequency (Noise) Weightings

:)

Derek,

I like the advisement to try another amp.

I'm in Pro Sound, always use pro grade amps here at home ( QSC & Bryston ) so have a hard time relating to "soft-circuit" mush caused by...

I think most of your problems Derek with those L150's woofers ( as well as desire to tinker with the other components ) stem from having unrealistic expectations ( level wise ) as to what HiFi...

Derek had full recones ( aftermarket I believe ) done to his 128's .

I'll assume the reconer was hip enough to her job to clean the gap as well as remove any crumbling foam from the center...

Thanks Rob!

In reality I can't determine if what you have is aquaplas or not without an actual hands-on with that cone.

What do you think it is?

As Mac pointed out, the back of these...

Thanks Rob!

So the original 128H was painted in white aquaplas ( according to this blurb ).

http://www.lansingheritage.org/images/jbl/specs/home-speakers/1979-l150/page3.jpg

And the original...

Derek,

Color me confused here.

I thought you were getting ( from your preferred reconer ) bona-fide JBL recone kits.

Is that not the case? ( Price wise, were they inline with a costing...

Thanks for the pics Derek! ( plus the update on the cone painting mixture ).

I you still have them ( I humbly suggest that you ) hold on to those cone assemblies ( that were lifted out as a single...