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2014 Accord Sport SQ Build keep_hope_alive
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<blockquote data-quote="keep_hope_alive" data-source="post: 8361659" data-attributes="member: 576029"><p>Looking more closely at the amplifier IC and preamp section, i think we can snag a decent RCA output from the two dual opamps.</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/2014AccordHUboards%20009.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/2014AccordHUboards20009.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/b4c3e16b-7f16-4dce-905d-a553642a455f.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>but the opamps inside are pretty poor (typical Pioneer). replacing them makes more sense. I love the Analog Devices OP275, very high slew rate and very low distortion.</p><p></p><p>replace this:</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/NJM4580DATASHEET__1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>with this:</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/AnalogDevicesOP275datasheet.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>i'm not 100% on the amplifier IC because the markings are behind the metal bracket and i don't feel like cutting that out. but this is most likely the IC (or a equivalent model). the ground pins are in the right spot.</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/PioneerPA2030a.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>also, there is a remote turn-on output in the harness that corresponds to Pin 25 on the amplifier IC.</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/15cb8b47-bb49-4f7d-9125-a672a0412115.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>closeup of the Bluetooth module</p><p></p><p><img src="http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/25dd1826-ff22-4e0d-b559-a06a609ce3af.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8361659, member: 576029"] Looking more closely at the amplifier IC and preamp section, i think we can snag a decent RCA output from the two dual opamps. [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/2014AccordHUboards%20009.jpg[/IMG] [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/2014AccordHUboards20009.jpg[/IMG] [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/b4c3e16b-7f16-4dce-905d-a553642a455f.jpg[/IMG] but the opamps inside are pretty poor (typical Pioneer). replacing them makes more sense. I love the Analog Devices OP275, very high slew rate and very low distortion. replace this: [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/NJM4580DATASHEET__1.jpg[/IMG] with this: [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/AnalogDevicesOP275datasheet.png[/IMG] i'm not 100% on the amplifier IC because the markings are behind the metal bracket and i don't feel like cutting that out. but this is most likely the IC (or a equivalent model). the ground pins are in the right spot. [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/PioneerPA2030a.png[/IMG] also, there is a remote turn-on output in the harness that corresponds to Pin 25 on the amplifier IC. [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/15cb8b47-bb49-4f7d-9125-a672a0412115.jpg[/IMG] closeup of the Bluetooth module [IMG]http://i38.photobucket.com/albums/e128/phat_funky_beats/2014%20Accord%20Sport/2014AccordHeadUnitMod/25dd1826-ff22-4e0d-b559-a06a609ce3af.jpg[/IMG] [/QUOTE]
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