09-17-2018, 10:53 AM
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#31
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Join Date: Oct 2010
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Which brand interface are you using?
Sent from my SM-N950U using Tapatalk
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10-06-2018, 08:10 PM
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#32
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Join Date: Oct 2018
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Quote:
Originally Posted by Ultraphage
Ok,
I’ve got a 2004 sport, JBL (non-rds) 10 speaker system. The sub blew, so I replaced the head unit (but the Bluetooth connection is so quiet I have to use USB to listen thru my phone—-ugh). Then the sub (Rockford fosgate) and the “mid-range” speakers in the doors (6x9’s & 6.5’s).
So everything is connected right and the sound quality is still pretty much shit because the little 2” (high-range) speakers in the front doors, center dash and rear pillars distort. So I purchased new 3.5” speakers to replace those smaller “high-range” ones, but have not installed them because I’m going to have to pound some metal in and fabricate some brackets to hold them to get them to fit. I’m HOPING that this 8mproves the sound quality and level.
Right now my receiver can be turned up to a max level of 35. At 34 pretty much everything will sound distorted (again due to the shitty small speakers), but even at 35—you could still have a conversation with someone else in the car without really having to raise your voice. This system just does not get loud AT ALL.
So now I assume I should replace the factory amp??? I read how everyone said it’s better to just start all over and I probably shouldn’t have bothered trying to get all 2ohm replacement speakers, but at this point, I just want to do what’s cheapest to get some decently loud music in my car.
So, 1) does anyone have any input? 2) any recommendations for a factory amp replacement? I have no idea what to look for since it was a 10 speaker 2ohm system all being run from a single amp, when most amps only have like 4 channels? If a replacement amp costs too much, I’ll just buy a 3-way speaker box, little 50watts amp and scrap everything and run that from the receiver to the rear hatch. 3) how’s that amp run all those speakers anyway? Is it because they are 2ohm speakers that they all run from one amp?
Thanks
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It sounds to me like you're pushing the amplifier into clipping and its still not enough power to properly drive the aftermarket speakers. Clipping occurs when an amplifier is pushed to its limits, so the signal gets 'truncated'. Think of audio as a sine wave, and now imagine that you remove the nice rounded transitions on the top and bottom to create a square wave. This wave is literally translated into the movement of the speaker cone. It's easy to visualize how very sharp transitions would translate to distortion. With your OE speakers, the amp was probably able to properly power the speakers before reaching this clipping point, but you likely require additional power to move the aftermarket speakers.
This is just a guess as I don't have the details on the factory speakers, replacement speakers, or head unit setup, but this has generally held true for other stereos I have installed. If I am correct, then the only thing I can really think to fix this would be to upgrade the amplifier. There are a number of 5 channel amplifiers out there that would be enough to drive this setup, but you will likely have to move from individual speaker inputs to RCA coaxials, or get an adapter.
Generally, an amplifier will drive a 2 Ohm speaker with twice the power of a 4 Ohm speaker, albeit normally with more THD. But I would guess the factory amp is used to taking higher level inputs, therefore has less amplification to do to reach its output. Hope this helps.
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12-05-2018, 01:25 AM
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#33
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Join Date: Apr 2018
Location: Cincinnati
Posts: 22
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Ok,
So my first post should’ve said, the receiver will only go to 35, but at 24-25 range everything gets distorted. I’m relatively sure it’s the “tweeters” or whatever you want to call them in the front doors, center dash and rear pillars. Also, the 2-ways and sub I replaced are 2 ohm speakers.
Since I replaced the other door speakers with 2-ways, could I just disconnect those stock “tweeters” somehow (any suggestions)?
OR
Should I get a new amp? And would a 5 channel amp do the trick? What kind of wattage should I get?
And btw I can’t apparently get that sweet kenwood 3-way speaker box I had 20 years ago (man I wish I still had that now).
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01-23-2019, 01:23 PM
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#34
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Join Date: Sep 2016
Location: San Diego
Posts: 164
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Quote:
Originally Posted by Ultraphage
Ok,
I’ve got a 2004 sport, JBL (non-rds) 10 speaker system. The sub blew, so I replaced the head unit (but the Bluetooth connection is so quiet I have to use USB to listen thru my phone—-ugh). Then the sub (Rockford fosgate) and the “mid-range” speakers in the doors (6x9’s & 6.5’s).
So everything is connected right and the sound quality is still pretty much shit because the little 2” (high-range) speakers in the front doors, center dash and rear pillars distort. So I purchased new 3.5” speakers to replace those smaller “high-range” ones, but have not installed them because I’m going to have to pound some metal in and fabricate some brackets to hold them to get them to fit. I’m HOPING that this 8mproves the sound quality and level.
Right now my receiver can be turned up to a max level of 35. At 34 pretty much everything will sound distorted (again due to the shitty small speakers), but even at 35—you could still have a conversation with someone else in the car without really having to raise your voice. This system just does not get loud AT ALL.
So now I assume I should replace the factory amp??? I read how everyone said it’s better to just start all over and I probably shouldn’t have bothered trying to get all 2ohm replacement speakers, but at this point, I just want to do what’s cheapest to get some decently loud music in my car.
So, 1) does anyone have any input? 2) any recommendations for a factory amp replacement? I have no idea what to look for since it was a 10 speaker 2ohm system all being run from a single amp, when most amps only have like 4 channels? If a replacement amp costs too much, I’ll just buy a 3-way speaker box, little 50watts amp and scrap everything and run that from the receiver to the rear hatch. 3) how’s that amp run all those speakers anyway? Is it because they are 2ohm speakers that they all run from one amp?
Thanks
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How did you connect the head unit to the stock amp? With my JBL system I had to get a unique device that goes between the HU and amp:
Metra TYTO-01 JBL Amplifier Interface Harness
This device tells the amp to turn on and sends the audio signal to the amp. It also has a gain control so I'm wondering if you're possibly clipping the input to the stock amp, not necessarily the output. When I installed mine, I had to adjust the gain on this device to fix some distortion. My sub has now blown though so I'm planning on replacing the sub and stock amp soon. With the metra device and the stock amp, the system seems to have lost the division between low and high frequencies between the sub and other speakers.
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02-02-2019, 12:41 AM
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#35
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Join Date: Apr 2018
Location: Cincinnati
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Yeah,
I had to use that metra harness also. I never thought about it having some sort of gain on it though? I’ll pull the head unit out and check that!
Thanks for the suggestion!
So, what do you mean by ...”it seems like you lost the division between frequencies”?
Are you feeling like the lows aren’t exclusively thru your sub and the rest of your speakers are pushing everything? Because I’ve always sort of felt like that. In fact there are very few songs I’ve heard where there seemed to be decent separation of the frequencies. When I was a teenager, the systems we had with subs, you could always tell where the low end was coming from (the back or trunk). I always felt like these 4runners were either too balanced or just set at the correct frequency level.
I dont know, I know very little about car audio, but it just seems like if they go to the trouble to sell an upgraded system, it should sound like any other modern sound system. Jeeps, Acura’s, Subaru’s, and even the new Camry’s all sound decent.
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08-05-2019, 12:39 PM
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#36
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Senior Member
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Join Date: Jan 2015
Location: East Mountains, NM
Posts: 1,210
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i'm bringing this old thread back from the grave. The JBL amp that we all are talking about, is this unit located on the subwoofer speaker enclosure in the cargo area? Is this the ONLY amplifier in this system? It seems odd to me that the pre-amp out from the stereo goes all the way to the back to the amp, then the amplified signal then goes back toward the front and to all door speaker.
I think my amp is acting up and would like to replace it if anyone has their old one in the garage some place. Please send me a PM if your JBL is functional and you took it out for a better aftermarket amp.
Thanks.
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1997 4Runner SR5 - daughter's ride, slowly getting built up
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08-05-2019, 02:02 PM
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#37
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Join Date: Aug 2017
Location: Kansas City
Posts: 1,600
Real Name: Howard J. Turkstra
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Yes, I believe the amp by the subwoofer is the only amp in the system.
In the last year or two, I have replaced my entire JBL system with aftermarket equipment. I’m not using any of the 5 factory tweeter locations. I have 6x9 coaxial speakers in the lower front doors (nothing in the factory tweeter locations), no center dash speaker, 6.5 coaxial speakers in the rear doors, no tweeters in the rear pillars and an 8 inch sub in the stock location in the back. I lost the use of my steering wheel controls because my head unit is old. There’s no way to attach an adapter that I know of.
In summary, I have an aftermarket dead head unit that requires external amps, 3 external amps mounted on the “floor” in my cargo area, the speakers mentioned above and an aftermarket 18 disc (!) CD changer. The difference in sound quality is remarkable. The stock JBL system was ok, but nothing special.
I did the entire installation myself, including the wiring for the amps and replacing all of the speaker wiring. It was time consuming, but not that hard for me to do. (This was the third or fourth car stereo installation that I have done.) I’m not a professional installer by any means, but I understand how everything needs to be installed/hooked up.
The next/last step of my project will be installing sound deadener in the doors, floor/firewall, headliner, cargo area and tailgate.
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08-06-2019, 04:14 PM
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#38
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Thanks for the info!! I returned your PM.
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2003 Sport V8 Icon 2" rear, Bilstein 6112 front with 700# king springs, Gibson cat back, Magnaflow cross pipe. OBA, DIY sliders, etc
1996 FZJ80 landcruiser with whole bunch of stuff, including a Turbo.
1997 4Runner SR5 - daughter's ride, slowly getting built up
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09-02-2019, 06:34 AM
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#39
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Join Date: May 2004
Location: Mideast
Posts: 977
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Can the factory JBL amp/subwoofer be used with an aftermarket HU and speakers?
Is there a harness that can be bought to connect the aftermarket HU with the JBL amp and also from the amp to the speakers?
Thanks!
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01-27-2020, 02:41 PM
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#40
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Join Date: May 2018
Location: Houston
Posts: 46
Real Name: Topher
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Quote:
Originally Posted by HiluxSurf SSR-G
Can the factory JBL amp/subwoofer be used with an aftermarket HU and speakers?
Is there a harness that can be bought to connect the aftermarket HU with the JBL amp and also from the amp to the speakers?
Thanks!
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Yes. I am running the Kenwood DMS906S with the iDatalink ADSMRR & T01 harness. Crutchfield is your friend. I swapped out my fronts with Infinity components. I still need to swap out the stock amp and sub though. My sub blew out and its why i've started this whole process.
Anyone know of an AMP that will fit the factory location or how much room is in there? I'd like to fit a 5channel in there, but need to know how much room i have.
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08-08-2020, 11:17 PM
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#41
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Join Date: Mar 2020
Location: Sacramento, CA
Posts: 348
Real Name: Joe
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Reviving an old thread since I just did some upgrades. First the JBL sub blew and I replaced that with a Pioneer TS-SW2002D2. It lines up with the existing holes in the stock enclosure. Sound quaintly is good off of the stock amp.
Next, I replaced the headhunt with Sony XAV-AX5500. I got the wiring kit recommend by Crutchfield and my steering wheel controls still work.
However, now I feel the system is unbalanced. On the stock amp, the sub outshines the 15 year old JBL speakers. I'm sure they were considered an upgrade back in 2005. They just can't keep up with the new headhunt and sub and distortion is a problem. I'm going to replace the speakers soon and debating what to do about the amp.
The stock amp is pushing 2 ohm to all speakers. Most car stereo speakers and components are 4 ohm, which will result in reduced volume with the stock amp. The question now is do I replace the stock speakers with 2 ohm and keep the factory amp, or replace it all? I'm not looking to go crazy and spend a ton of money, but I want it to sound nice for a while.
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08-09-2020, 10:41 PM
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#42
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Join Date: Jul 2014
Location: Maryland
Posts: 104
Real Name: Doug
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My opinion is rip the entire thing out and replace everything with new.
Just do it and don't look back.
It doesn't all have to be top of the line, of course.
Not that I'm a shotgunner by nature...
But I just think trying to mix and match that old stock JBL system with new components 'here and there' is just not worth the trouble.
Compared to all new components that all match up and play nice with each other.
I just think spot-replacing will yield anemic results, issues, and frustration.
Tho I'm sure many here have done it with success.
I have an entire new system sitting in my garage right now.
Just bought it all about a week ago from Crutchfield.
I've been building my own 4Runner StealthBox for the new 10" JL 10W3v3 sub this week, it's almost done now.
Just waiting on some car carpet to finish it off.
I got the Sony AX1000 compared to your AX5500.
But, all new speakers all the way around, new amp, new head unit, new sub.
And of course, it all matches up with each other.
With the wiring harness it all came to about $1600.00.
I saved $500.00 by building my own Stealthbox, so that's something.
Not sure where that fits in your financial scheme, just tossing it out there.
And also of course, I'll probably never sell the 4Runner.
So I'm committed to it for the long haul.
My worthless two cents on the matter...
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Last edited by Drak; 08-09-2020 at 10:45 PM.
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08-16-2020, 09:25 PM
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#43
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Join Date: Mar 2020
Location: Sacramento, CA
Posts: 348
Real Name: Joe
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Join Date: Mar 2020
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Quote:
Originally Posted by Drak
My opinion is rip the entire thing out and replace everything with new.
Just do it and don't look back.
It doesn't all have to be top of the line, of course.
Not that I'm a shotgunner by nature...
But I just think trying to mix and match that old stock JBL system with new components 'here and there' is just not worth the trouble.
Compared to all new components that all match up and play nice with each other.
I just think spot-replacing will yield anemic results, issues, and frustration.
Tho I'm sure many here have done it with success.
I have an entire new system sitting in my garage right now.
Just bought it all about a week ago from Crutchfield.
I've been building my own 4Runner StealthBox for the new 10" JL 10W3v3 sub this week, it's almost done now.
Just waiting on some car carpet to finish it off.
I got the Sony AX1000 compared to your AX5500.
But, all new speakers all the way around, new amp, new head unit, new sub.
And of course, it all matches up with each other.
With the wiring harness it all came to about $1600.00.
I saved $500.00 by building my own Stealthbox, so that's something.
Not sure where that fits in your financial scheme, just tossing it out there.
And also of course, I'll probably never sell the 4Runner.
So I'm committed to it for the long haul.
My worthless two cents on the matter...
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Crutchfield is such a good resource. I'm surprised more people don't know about them.
The AX1000 is a nice headunit too! In my opinion, Sony makes some of the best stereos out there.
Sure enough, I've changed out the speakers now as well. I went with Focal's since they're really efficient. I'm running 6.5" components in the front and 6.5" 2-way speakers in the rear doors. I took the time to dynamat the front doors, but didn't bother with the rears. I have some dynamat left over so I'll likely pull out the sub at some point and put it back there.
What amp(s) are you going to run? I'm thinking that will be the next upgrade, but I want to find something I can put in the stock location.
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08-21-2020, 11:15 AM
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#44
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Join Date: Jul 2014
Location: Maryland
Posts: 104
Real Name: Doug
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Join Date: Jul 2014
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My first choice was the JL RD900/5.
All my speakers are JL, and they have a good name.
But I got wrapped up in putting the amp in the same location as the stock.
So there were size issues to consider, and I thought the JL would be too big.
So I decided to go with the Soundstream Picasso Nano PN5.64.
Then, I let go of the idea of having to place it in the same location.
And had planned on just installing it under the seat.
In the end, I don't see running the amp or the sub at maximum capacity anyway.
So either would have been just fine I think.
Yes, Crutchfield is really great for all technical info and customer support.
They'll answer anything and help you install everything.
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04-06-2021, 06:11 PM
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#45
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Join Date: Apr 2021
Location: ABQ, NM
Posts: 9
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Spare OEM JBL 4ch amp
My 04 JBL Synthesis 4ch amp went south.
Has anyone out there a spare or shelved JBL amp they would release?
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