Adding 2nd set of JL 8.8’s to FX one tower.

[russellsmojo]

What amp is running your cabin speakers? If it’s an 800/8 you might could use that 400/4 for the 6 cabin speakers and the 800/8 for towers.


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[larry_arizona]

Cabin and sub already running a separate M800/8.

Current 2 tower 8.8’s run on a M400/4

Supras with 4 tower 8.8’s run on a M800/8, I just don’t know how it’s wired?? How many RCA’s and do I bridge all 4 towers over the 8 channels?




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[russellsmojo]

1 input for rca. Basically wire just like picture but four times instead of two. Should be 200 watts at 4 ohm to each speaker. If you hadn’t already bought another 800/8 that 400/4 would have ran cabins.


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[larry_arizona]

1 input for rca. Basically wire just like picture but four times instead of two. Should be 200 watts at 4 ohm to each speaker. If you hadn’t already bought another 800/8 that 400/4 would have ran cabins.


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So I should transfer the 12v, ground and remote, 4RCA’s, and bridge all 4 tower speakers to the M800/8?

What do the 4 RCA’s control?


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[russellsmojo]

Yes transfer everything as is. Put those rca’s in just like they are now and choose 4 channel input on the switch. All 8 channels will use those 4 inputs. Be sure and tune the gains.

FYI 60 hz seems off for tower speakers to me.


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[larry_arizona]

What do you recommend for hz? 60hz is the factory setting from Supra.




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[russellsmojo]

This is certainly up for debate and different speaker amp combos make it even more debatable. Try this and see how it sounds.

Sub Low pass at 80hz
Tower high pass somewhere around 80 to a 100
Cabins high pass 100

[larry_arizona]

Progress.....

Speakers installed on tower, had to use JL pipe clamps as Supra FXONE tower clamps are not available to aftermarket. This offsets the inner speakers slightly rearward, but I like the look.



Tower is wired and speaker leds and down firing lights were all plug and play with factory Amphenol connectors.

Traced factory speaker wires looking for the ends for the inner speakers to wire to amp. It’s not fully wired from the factory for all 4 tower speakers, but very close.

There are two Amphenol connectors that are 4 pin for wiring from the tower but only 2 output pins are hooked up for 2 speaker boats.

Easy enough to add wires and two more pins for the new speakers. But about 80% plug and play using factory harness.



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[larry_arizona]

Speakers and amp fully installed and ROCK’nnn!!!
Thanks to MLA, Knoxmojo and Russelsmojo for helping an audio newb.


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[slinky]

Are you wanting to sell the 4 channel amp?