Lexus is 300 rear speaker setup

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Another question for you guys, since I lost bass in this mod but cleared up the highs alot I'm thinking adding a woofer in the trunk, I'd get the following setup :

I would use the woofer outs from my stock unit and insert it into a highlevel input amp to power a medium powered woofer nothing explosive.

And I'd use the 'high frequency out' from the stock unit to power the WHOLE 6x9 because as I said it feels as though I'm missing out on some frequencies this way

My question to you guys : The original "tweeter" was a 4 ohm, the kenwood 6x9 is a 4ohm rated speaker now that I've removed the filter on the mid speaker since the car already has a filter at the amp, If I wire the woofer and the tweeter in parallel without the crossover(capacitor) would that affect the load? Does the capacitor actually "reduce" the load the amp sees?

And when using a high level input amp, does it change anything that the impedance recommended be 2ohm when reamplified?
 
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here's a sum up, right now the 'mid tweeter' without its filter since its directly on the high frequency cables from the amp sounds better more sound comes to it, I want to rewire the woofer with it on the high frequency cable, and get the woofer out cables to amplify a real woofer instead of the ones on the 6x9

To bypass the fact my stock unit isn't offering RCA outputs I found a little built in sub that sounds great for my needs its got a high level input AMP built in the cabin, what I'm asking is, if the woofer out cables were expected to have a 2ohm load, what load does an amplifier see when it sends its signal to another amp?
 
TBH replacing the stock 6x9s with Keni's offerings would always be a waste of time IMO. Rear speakers are largely a complete waste of time in a car-fine for rear passengers, but for the driver they tend to be more detrimental to the sound than beneficial. A set of 4-way 6x9s are usually targetted at 16yr olds who look at shiney things and MAX power...There are better quality 6x9s, normally just 2-way so they can accomodate a decent silk dome tweeter...

I would leave the 6x9s out of the equation all together, take the signal from the bass driver of the OEM 6x9s run that into a LOC and run a subwoofer off that. Remove the 6x9 all together and vent the sub through their appertures.

Front speakers are your main concern for a good car audio system, upgrade those, add an amp for them and filter them out 60-100Hz depending on the drivers you buy and the quality of the install. Run the subwoofer 60Hz and down, sound deaden the boot to prevent rattles to the outside.
 
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