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Message: <blockquote data-quote="mrpink" data-source="post: 1300184" data-attributes="member: 25241">Hi there.The Forscan EQ disable (727-01-02 = 00xx xx..) will NOT disable output (to door speakers) from your SONY amp.It will just lift the factory applied EQ curve, resulting in a flat output frequency curve from the Sony amp (which is what you want). So you're good to go doing that. (It's also a MUST, if you plan to tap into the speaker level signal at the Sony amp's outputs).The PAC is unreliable. It periodically freezes, and puts out popping noises. If you install it behind the radio, you'll have to disassemble the surrounding trim and remove the radio every time it freezes, so that you can power-cycle it to reset.The Rockford DSR has line-level RCA inputs. Are you planning to install it A: between head unit and amp, or B: post-amp?If A: Your head unit has no RCA outputs (to my knowledge...), so hookup will require a high-level to line level conversion, cutting into the input harness of the Sony amp, etc etc. This type of hookup might pick up alternator whine and other noises, and produce a popping on startup/shut down (if installed before the amp).If B: this is a much better choice, using its high-level inputs with auto sensing. Before you do this, make sure you disable EQ by applying the Forscan code mentioned above. However, now you have a factory amp, then a DSR, then the additional aftermarket amp(s) you'll need. Plus you'll need to know the speaker output color coding at the Sony's output harness.Instead of the DSR plus additional amps, may I strongly recommend a JBL MS-8 instead.Just take the high-level outputs from the SONY amp, (after EQ has been disabled to flat-frequency curve), and you're done. The MS-8 will provide the high-level input processing, and summing, the 32-band EQ, the multichannel amps, and even RCA outputs for additional (subwoofer) amp(s) - all in one box.Should you have reservations about the MS-8's seemingly low power rating... - DON'T.If you observe and understand speaker impedances and sensitivity, amplification class, current, and actual real-life wattage consumption -and apply them properly in your install, - then Nobody needs more than an MS8.Should you be interested in a complete (similar) install description, please see my post:<a href="https://www.fordraptorforum.com/threads/mcintosh-morel-install-phase-1.58434/" target="_blank">https://www.fordraptorforum.com/threads/mcintosh-morel-install-phase-1.58434/</a>any further questions, please don't hesitate...</blockquote>

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