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I bought a JBL Basspro micro for my 2022 forte. I know I have to use the low end output from the rear speakers instead of RCAs. Is there a way to get the input from the factory subwoofer? Has anyone installed a powered subwoofer in theirs and if so any advice?
 

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2021 Forte GT w/GT2, Currant Red, SXTH Element Intercooler Kit, Evilla Exhaust, Takeda S2 Intake
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I don't have any issues with my SAS Bass Tube. I tapped the left and right side to provide the signal to the tube.

That is all you have to do. It won't mess with the sound enhancement at all.
 

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At the subwoofer itself.

Both woofers work. You can use vampire taps for the speaker wires.
So you tapped the actual subwoofer? I have a single stock sub but it has 2 plugs so I assume that’s what you mean by both. Do you know if the stock sub gets full sub range (20-200Hz) or is it tuned for the stock sub to only get what’s best for it (ex. 100-200Hz)?
 

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So you tapped the actual subwoofer? I have a single stock sub but it has 2 plugs so I assume that’s what you mean by both. Do you know if the stock sub gets full sub range (20-200Hz) or is it tuned for the stock sub to only get what’s best for it (ex. 100-200Hz)?
That is correct. The stock subwoofer is dual voice coil, that is why it has two sets of positive/negative terminals.

There is no reason to make it more complicated than that, tapping the sub is all you need to do.

The sub output is likely 200-150 Hz down to 20 Hz. Though the power you need to hear anything below 30 Hz is more than the stock amp can manage, which is why I installed the bass tube. IB or Infinite Baffle plays all the way down to whatever the speaker is rated for, however as I said you need a substantial amount of power, it's not being provided here.

Ported enclosures are vastly more efficient which is why 50 watts is very loud. I've had a 100 watt tube before, it's not that much louder actually, only a little.

You are only providing the amp a signal, it's already crossover (75 hz, fixed). To get the adjustable crossover you need the 250D model and optional knob which has an adjustment between 60 Hz and 250 Hz.
 

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That is correct. The stock subwoofer is dual voice coil, that is why it has two sets of positive/negative terminals.

There is no reason to make it more complicated than that, tapping the sub is all you need to do.

The sub output is likely 200-150 Hz down to 20 Hz. Though the power you need to hear anything below 30 Hz is more than the stock amp can manage, which is why I installed the bass tube. IB or Infinite Baffle plays all the way down to whatever the speaker is rated for, however as I said you need a substantial amount of power, it's not being provided here.

Ported enclosures are vastly more efficient which is why 50 watts is very loud. I've had a 100 watt tube before, it's not that much louder actually, only a little.

You are only providing the amp a signal, it's already crossover (75 hz, fixed). To get the adjustable crossover you need the 250D model and optional knob which has an adjustment between 60 Hz and 250 Hz.
Good info thank you. I’m looking to install a Rockford Fosgate P300-10 or 12. I also might look into going to the junk yard and getting some of the plugs the sub and speakers use and making up a wire harness splitter so I don’t have to splice the speaker wires.

Looks like I just need to worry about getting the power wire back there. Any tips on that? I’ve got a 22 and it doesn’t have the plate with the 2 bolts others have mentioned so I’m still at the drawing board.
 

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Good info thank you. I’m looking to install a Rockford Fosgate P300-10 or 12. I also might look into going to the junk yard and getting some of the plugs the sub and speakers use and making up a wire harness splitter so I don’t have to splice the speaker wires.

Looks like I just need to worry about getting the power wire back there. Any tips on that? I’ve got a 22 and it doesn’t have the plate with the 2 bolts others have mentioned so I’m still at the drawing board.
If you already have the Rockford-Fosgate that's fine. I highly recommend the SAS Bass Tubes, they do the job, work great and don't cost that much.

They can be constantly reused.

Use Posi-Taps no need to track down a factory harness connector. Not sure why people make things more complicated than they need to be.
 

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If you already have the Rockford-Fosgate that's fine. I highly recommend the SAS Bass Tubes, they do the job, work great and don't cost that much.

They can be constantly reused.

Use Posi-Taps no need to track down a factory harness connector. Not sure why people make things more complicated than they need to be.
You are taking all the "fun" out of it...:)
 

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You are taking all the "fun" out of it...:)
For the guy that says he doesn't know much about audio should be the first person to install a 100w SAS Tube and play Def Leppard " Rock of Ages" and try to tell me it makes no difference. 😁

I recommend the 100w as you can get the optional bass knob to control output. You'll want more for EDM/Rap and less for Fleetwood Mac or Mesnia/Loggins.

Installing stuff is fun, demoing the system after the install is more fun. Stuff hits harder and had depth/heft to it the stock system can't give you.

Now that the tube has been in the car for over a year the mains are no longer loud enough and I want more.

Stay tuned lots of changes for 2022.
 

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So is the powered sub that “empty” that an aftermarket is needed? I’m coming for a Tucson sport with the infinity system and inside it sounds amazing. I was hoping the GT I was getting wouldn’t need anything added
 

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So is the powered sub that “empty” that an aftermarket is needed? I’m coming for a Tucson sport with the infinity system and inside it sounds amazing. I was hoping the GT I was getting wouldn’t need anything added
I didn't say anything about the sound quality of the HK/Infinity/Mark Levinson/Sony/Rockford-Fosgate/Kicker factory premium upgrade.

They all sound very good, almost no need to touch the tone controls and that is a sign of a well designed system.

What they all lack is significant sub bass (below 50 Hz) and all your amplified music and 100% of electronically synth music needs a subwoofer. The problem is one electrical demands of a modern car which they need to compensate for the tiny boxes they give you. But then the subs are cheaply made and have very little extension.

You don't miss what you never had. There is much more to it than teenagers booming down your street unfortunately that is the reputation subwoofers have.

Compare the bass response in a good set of headphones to what you hear in your car and you'll see what I mean.

When you give the Bass tone control a crank you are increasing the 100Hz band not the sub-bass. What you want is more impact.

You can try pushing more power to the factory sub because it's there but doesn't played the lower regions well.

It's not distortion at all, the lack of impact is the problem.

I knew exactly how to fix it, pulled my tube from the closet, ordered a new woofer from Bazooka/SAS, installed it and threw it in the car.

It adds weight to the system if you understand what I mean.

Everything sounds better.

I try to put it into musical terms but I don't know if that hits home.

The familiar bass line in Micheal Jackson's Billie Jean sounds good with the HK system, but there is no weight to the bass strings being pulled.

The tube added weight.

What do you listen to? I mean No Doubt sounds a ton better with the tube than without. OT Genesis hits hard and so does the Weeknd.

I try to keep it out of rap/R&B terms because too many people associate a good sub system with that kind of music so if you don't listen to rap you don't need a sub.

That isn't true.

There lots of factors, I mean CD, 12 inch singles these have much more aggressive mastering than 45's and LP's.
 
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