is300 Rear Speaker Swap
03-01-04, 02:36 AM
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is300 Rear Speaker Swap
I have some Clarion 5 X 7 speakers that also have a 6 X 9 plastic adapter which I believe is the size of the rear speakers in my 2003 Is300.
Anyway I want to swap out the factory. I noticed looking through the trunk at the speakers, that it seems fairly easy. I am just wondering, what is the best way to go about removing the rear speakers? I think I have to go through the top like the passenger area and remove the plastic speaker covers then I am assuming I will see the screws. Can anyone confirm, and just give a little more information about how the speakers are removed? After they are removed, I plan on cutting the positive and negative leads, attaching the proper connectors, and plug them in. Thanks!
Anyway I want to swap out the factory. I noticed looking through the trunk at the speakers, that it seems fairly easy. I am just wondering, what is the best way to go about removing the rear speakers? I think I have to go through the top like the passenger area and remove the plastic speaker covers then I am assuming I will see the screws. Can anyone confirm, and just give a little more information about how the speakers are removed? After they are removed, I plan on cutting the positive and negative leads, attaching the proper connectors, and plug them in. Thanks!
03-01-04, 08:15 PM
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Rear Speakers
I fear our answer lies within the confines of is300.net! 
What size are the IS300 factory speakers?
6.5" in front doors, 1.25" tweeter on doors, 6x9" woofers in the rear deck, 3" stackmounted on 6x9 woofer in rear deck.
I replaced my 6x9's and the new one's sound like shiet!?
That’s because the factory amp sends a total of 4 channels to the rear speakers. The woofer is 2 ohms and only gets a limited range of frequencies; the mids are 4 ohms and get the remainder of the frequencies. When hooking up a typical 6x9 you will only use 1 set of these amp channels, and thus you get bass or highs only.
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Basically, I have not done this yet because I am still figuring out how to remove the rear deck, but my guess is there will be four leads, 2 pos / 2 neg. A pair of leads is visible via the trunk if you look up at the speakers and my guess the other pair will be exposed once the rear deck is removed.
This works out for me because my clarion speakers are component, which means I just hook up the two pairs of leads and I should be golden. God willing that is. If I get around to doing it, I will take pictures and perhaps post a FAQ and install guide.
** Basically anyone have detailed instructions how to remove the rear deck to access the speakers? I am a little apprehensive of just taking a screwdriver and hammer to the thing.
What size are the IS300 factory speakers?
6.5" in front doors, 1.25" tweeter on doors, 6x9" woofers in the rear deck, 3" stackmounted on 6x9 woofer in rear deck.
I replaced my 6x9's and the new one's sound like shiet!?
That’s because the factory amp sends a total of 4 channels to the rear speakers. The woofer is 2 ohms and only gets a limited range of frequencies; the mids are 4 ohms and get the remainder of the frequencies. When hooking up a typical 6x9 you will only use 1 set of these amp channels, and thus you get bass or highs only.
----------------------------------------------------------------------------
Basically, I have not done this yet because I am still figuring out how to remove the rear deck, but my guess is there will be four leads, 2 pos / 2 neg. A pair of leads is visible via the trunk if you look up at the speakers and my guess the other pair will be exposed once the rear deck is removed.
This works out for me because my clarion speakers are component, which means I just hook up the two pairs of leads and I should be golden. God willing that is. If I get around to doing it, I will take pictures and perhaps post a FAQ and install guide.
** Basically anyone have detailed instructions how to remove the rear deck to access the speakers? I am a little apprehensive of just taking a screwdriver and hammer to the thing.
12-23-14, 08:07 AM
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This is old thread but I just did this so Ill try to help.. its pretty easy.. you remove seat base (simply pop out 2 clip spots '1 on front each side snap in').2- remove rear cushion of seat ( 4 12mm bolts at base of cushion plus 4 14mm bolts holding bottoms of seat belts "optional").3- push cushion up and back as it sits in 3 bucket clip things and pull out.. now carefully spread seat belt clip on cushion to allow sliding the bealt out on each side.. they can break so be careful if brittle.. 4- pull rear break light from window area (snaps in).. deck is fairly self explanatory ( unplug all wires and slowly start releasing any clips, snaps, plugs, etc.. if I recall correctly there are only 2 plugs and maybe a screw but not sure.. after that you should have a clear shot at the stock speakers.. Where in lies my issue... the plug for the stock speakers has 4 wires (2x tweeter 2x woofer (leading from factory amp.. I am unclear after several tries how to make this work on new head unit setup.. tried modding new 6x9s to get 2 wires to tweeter and two to woofer but no bueno.. sounds weak.. I wish i could get an answer with detailed pics.. anyone have a link????? also im a little naive as to speaker differences other than wattage. Thanks and hope I helped someone.
I fear our answer lies within the confines of is300.net!
What size are the IS300 factory speakers?
6.5" in front doors, 1.25" tweeter on doors, 6x9" woofers in the rear deck, 3" stackmounted on 6x9 woofer in rear deck.
I replaced my 6x9's and the new one's sound like shiet!?
That’s because the factory amp sends a total of 4 channels to the rear speakers. The woofer is 2 ohms and only gets a limited range of frequencies; the mids are 4 ohms and get the remainder of the frequencies. When hooking up a typical 6x9 you will only use 1 set of these amp channels, and thus you get bass or highs only.
----------------------------------------------------------------------------
Basically, I have not done this yet because I am still figuring out how to remove the rear deck, but my guess is there will be four leads, 2 pos / 2 neg. A pair of leads is visible via the trunk if you look up at the speakers and my guess the other pair will be exposed once the rear deck is removed.
This works out for me because my clarion speakers are component, which means I just hook up the two pairs of leads and I should be golden. God willing that is. If I get around to doing it, I will take pictures and perhaps post a FAQ and install guide.
** Basically anyone have detailed instructions how to remove the rear deck to access the speakers? I am a little apprehensive of just taking a screwdriver and hammer to the thing.
What size are the IS300 factory speakers?
6.5" in front doors, 1.25" tweeter on doors, 6x9" woofers in the rear deck, 3" stackmounted on 6x9 woofer in rear deck.
I replaced my 6x9's and the new one's sound like shiet!?
That’s because the factory amp sends a total of 4 channels to the rear speakers. The woofer is 2 ohms and only gets a limited range of frequencies; the mids are 4 ohms and get the remainder of the frequencies. When hooking up a typical 6x9 you will only use 1 set of these amp channels, and thus you get bass or highs only.
----------------------------------------------------------------------------
Basically, I have not done this yet because I am still figuring out how to remove the rear deck, but my guess is there will be four leads, 2 pos / 2 neg. A pair of leads is visible via the trunk if you look up at the speakers and my guess the other pair will be exposed once the rear deck is removed.
This works out for me because my clarion speakers are component, which means I just hook up the two pairs of leads and I should be golden. God willing that is. If I get around to doing it, I will take pictures and perhaps post a FAQ and install guide.
** Basically anyone have detailed instructions how to remove the rear deck to access the speakers? I am a little apprehensive of just taking a screwdriver and hammer to the thing.
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