2007 SX-230 Stereo Upgrade

[mark_m]

Hey @mark_m I'm trying to map out a similar setup as yours (8 speakers plus 1 sub) but I'm not following the math as it relates to your 8ch sub. Did you wire 4 speakers i parallel to save 2 channels? Figured if each speaker had its own dedicated channel that'd use em all up without leaving 2 to bridge for the sub.

Yep. Since I omitted the bow speakers, I was able to bridge to mono and drive the sub. I seem to remember Fusion gave a y-adapter to combine for the sub but I might be wrong. I'll have the boat back in April so I can look if you can wait a month.

Here's how I wired it:

Ch 1 & 2 (tub front left and right)
Ch 3 & 4 (tub rear left and right)
Ch 5 & 6 (combined to drive sub)
Ch 7 & 8 (swim deck left and right)

 

[svana]

Yep. Since I omitted the bow speakers, I was able to bridge to mono and drive the sub. I seem to remember Fusion gave a y-adapter to combine for the sub but I might be wrong. I'll have the boat back in April so I can look if you can wait a month.

Here's how I wired it:

Ch 1 & 2 (tub front left and right)
Ch 3 & 4 (tub rear left and right)
Ch 5 & 6 (combined to drive sub)
Ch 7 & 8 (swim deck left and right)

Ah, so you don’t have any power going to the bow speakers at all?

 

[mark_m]

Yep. Since I omitted the bow speakers, I was able to bridge to mono and drive the sub. I seem to remember Fusion gave a y-adapter to combine for the sub but I might be wrong. I'll have the boat back in April so I can look if you can wait a month.

Here's how I wired it:

Ch 1 & 2 (tub front left and right) 75W per channel at 4ohms
Ch 3 & 4 (tub rear left and right)
Ch 5 & 6 (combined to drive sub)
Ch 7 & 8 (swim deck left and right)

I didn't want to do a lot of combining to keep things simple and I had the flexibility in the budget to spend for the bigger amp.

If you combine, I think you're looking at 50 watts per channel at 2 ohms.

Ah, so you don’t have any power going to the bow speakers at all?

No - my '07 doesn't have bow speakers who hangs out in the bow anyway

You could look to combine and run at 50 wats at 2ohms if you wanted to I think.

 

[svana]

I didn't want to do a lot of combining to keep things simple and I had the flexibility in the budget to spend for the bigger amp.

If you combine, I think you're looking at 50 watts per channel at 2 ohms.

No - my '07 doesn't have bow speakers who hangs out in the bow anyway

You could look to combine and run at 50 wats at 2ohms if you wanted to I think.

Huh, no idea the 07’s didn’t have em. Thought they were almost identical to the 08’s. I guess that’s the “almost” part lol. And you’d think, but the bow’s the wife’s favorite part of the boat to lay out on.

 

[mark_m]

Huh, no idea the 07’s didn’t have em. Thought they were almost identical to the 08’s. I guess that’s the “almost” part lol. And you’d think, but the bow’s the wife’s favorite part of the boat to lay out on.

I hear you; when in the boat, I just use the tub speakers and sub and it is fine. I wanted the power to drive the transom speakers, that's where the extra punch comes in handy.

You could combine to drive bow + front tub 50 W per at 2 ohms, rear tub and transom 50W per at 2 ohms then maybe run 2 subs at 200W at 4 ohms? Or maybe find a 200/2 just for the sub or a 400/4 for 2 subs

 

[svana]

I hear you; when in the boat, I just use the tub speakers and sub and it is fine. I wanted the power to drive the transom speakers, that's where the extra punch comes in handy.

You could combine to drive bow + front tub 50 W per at 2 ohms, rear tub and transom 50W per at 2 ohms then maybe run 2 subs at 200W at 4 ohms? Or maybe find a 200/2 just for the sub or a 400/4 for 2 subs

I gotcha. The “right” way to do it would be to give the speakers their own channel and a separate sub amp. But oof cost and space would start to be a constraint.

 

[mark_m]

I gotcha. The “right” way to do it would be to give the speakers their own channel and a separate sub amp. But oof cost and space would start to be a constraint.

Or what you can do with the fusion is use it’s internal amplification for the two bow speakers then use the amp to drive the rest. If I had bow speakers that is probably what I would do. You don’t need tons of power just to fill the bow.

 

[svana]

Or what you can do with the fusion is use it’s internal amplification for the two bow speakers then use the amp to drive the rest. If I had bow speakers that is probably what I would do. You don’t need tons of power just to fill the bow.

True, that’s another option. Speaking of, how well did your Fusion fit in the original location? It’s bigger than a single din unit so I assume it’ll require some trimming, but pretty positive it won’t fit behind the OEM shield, correct?

 

[mark_m]

True, that’s another option. Speaking of, how well did your Fusion fit in the original location? It’s bigger than a single din unit so I assume it’ll require some trimming, but pretty positive it won’t fit behind the OEM shield, correct?

Correct. I got rid of that cheap thing. Check out this thread

https://jetboaters.net/threads/the-2007-stereo-head-unit-opening-is-not-din-sized-it-is-too-large.40/#post-851

I got one of these from Will @JetBoatPilot and it worked perfectly!

 

[svana]

Correct. I got rid of that cheap thing. Check out this thread

https://jetboaters.net/threads/the-2007-stereo-head-unit-opening-is-not-din-sized-it-is-too-large.40/#post-851

I got one of these from Will @JetBoatPilot and it worked perfectly!

Interesting, looks like a good workaround. I'll give him a shout when we're ready to move on the sound system. Also, great idea on using the internal amp. That sounds like it might be the solution.

 

[Jason Kloehn]

Finished starboard side hole and dry fit. Finished new transom remote.

Note: the 200i remote includes inline terminator and tee block and terminator. Inline terminator on the transom remote nema -> 6meter (included with 200i) cable up the starboard side. Finish with tee connecting the 6m cable and the 750 and your good to go. The head unit has a checkbox you select to power the remote, check that box and you are good to go.

View attachment 37748 View attachment 37749 View attachment 37750

I see this is a fairly old post but still hoping to get some info. Are those 6" speakers that are installed on the swim deck? How did they fit for you? Looks like it would be very tight. I'm scared to cut a hole and find out it doesn't work. I purchased 6" speakers and the total diameter to the outside is at 7". Any tips would be appreciated. Thanks

 

[captainhook]

I see this is a fairly old post but still hoping to get some info. Are those 6" speakers that are installed on the swim deck? How did they fit for you? Looks like it would be very tight. I'm scared to cut a hole and find out it doesn't work. I purchased 6" speakers and the total diameter to the outside is at 7". Any tips would be appreciated. Thanks

Several of us have cut in speakers on the swim platform. I've used both Polk 6.5s and JL 6.5s and they fit well. There isn't a ton of room but 6.5s definitely fit and are a great upgrade.

 

[mark_m]

I see this is a fairly old post but still hoping to get some info. Are those 6" speakers that are installed on the swim deck? How did they fit for you? Looks like it would be very tight. I'm scared to cut a hole and find out it doesn't work. I purchased 6" speakers and the total diameter to the outside is at 7". Any tips would be appreciated. Thanks

Use a hole saw! Pre-measure and measure, measure, measure. It's a close fit, but it works! The JL's are a great upgrade.

 

[Jason Kloehn]

Having a hard time finding a 5 3/16" hole saw for the 6.5" Kicker speakers I purchased. Checked a few local hardware stores with no luck. Menards and Home depot also.

 

[Street glide]

What kickers do u have I used a 5 inch hole saw on mine and it worked great

 

[Jason Kloehn]

What kickers do u have I used a 5 inch hole saw on mine and it worked great

Kicker 45KM604WL

The hole size on the instructions say 5 3/16" If I can get away with a smaller hole I would rather do that.

 

[Street glide]

I have the 45km654 and I used a 5 inch had to file just a little and mine fit like a glove

 

[Jason Kloehn]

I have the 45km654 and I used a 5 inch had to file just a little and mine fit like a glove

thanks! I will give that a shot. That will be a lot safer that using a jig saw

 

[mark_m]

I picked up this hole saw kit from HF. See if you can snag it on clearance. I see individual 5" hole saws cost an arm and a leg and the cheap one did great!

Harbor Freight Tools – Quality Tools at Discount Prices Since 1977

Harbor Freight buys their top quality tools from the same factories that supply our competitors. We cut out the middleman and pass the savings to you!

www.harborfreight.com

 

[Street glide]

I was going to get the one too but it was out of stock and wasn't any where close to me I bought the hole hole and adapter and had a coupon