Have a look at this for a laugh...
Have a look at this for a laugh...
Got it home and tried it out indoors and it seemed to be clipping with the assumtion that it was blown due to no bass and flapping at medium to high volumes, so we thought we'd open it up, and to our surprise we found a few shocking things:
1) The wire was way too thin to run this sub and amp set up, pic below:
2) This sub is a dual voice coil and he only had one voice coil wired in, pic below:
3) He had wire in the negative on the box to the positive on the sub, which would mean the sub would be out of phase...
So we put thicker gauge wire in, wired it up to all terminals on the sub are being used, and it's all wired correctly to box and amp now.
Pics:
This is how thin the wire was in comparison to my index finger:
![[Image: file-76.jpg]](http://i1201.photobucket.com/albums/bb346/oli3107/Corolla%20T%20Sport/file-76.jpg)
The way it was wired:
![[Image: file-74.jpg]](http://i1201.photobucket.com/albums/bb346/oli3107/Corolla%20T%20Sport/file-74.jpg)
![[Image: file-75.jpg]](http://i1201.photobucket.com/albums/bb346/oli3107/Corolla%20T%20Sport/file-75.jpg)
So the guy who sold us this set up had no clue of what he was doing in the slightest, but it's sorted now, so we'll try it tomorrow and see what it's like in the car!
Oli
Dark Samurai
28-06-2018, 03:16 PM #1Bought a new sub tonight from eBay, was a JBL GTO 752 Amp with a JBL GT1202D 12" Subwoofer.
Got it home and tried it out indoors and it seemed to be clipping with the assumtion that it was blown due to no bass and flapping at medium to high volumes, so we thought we'd open it up, and to our surprise we found a few shocking things:
1) The wire was way too thin to run this sub and amp set up, pic below:
2) This sub is a dual voice coil and he only had one voice coil wired in, pic below:
3) He had wire in the negative on the box to the positive on the sub, which would mean the sub would be out of phase...
So we put thicker gauge wire in, wired it up to all terminals on the sub are being used, and it's all wired correctly to box and amp now.
Pics:
This is how thin the wire was in comparison to my index finger:
The way it was wired:
So the guy who sold us this set up had no clue of what he was doing in the slightest, but it's sorted now, so we'll try it tomorrow and see what it's like in the car!
Oli
"Life's goal is not to arrive safely at the grave in a well preserved body. But, rather to skid in sideways........
totally worn out and broken, shouting 'Holy ****, WHAT A RIDE!'"
FirebirdPhil
28-06-2018, 06:34 PM #2OMG thats horrific, what I would expect from a 14 year old who didn'r know the 1st thing about electricity.
"Life's goal is not to arrive safely at the grave in a well preserved body. But, rather to skid in sideways........
totally worn out and broken, shouting 'Holy ****, WHAT A RIDE!'"
2002 '02' IS200 SE Auto - DVD Satnav with Voice Activation - [COLOR="Blue"]Strathcaron Blue - Parking Sensors - 5000K HIDs with Anti-Glare Bulbs - PIAA 6500K Main Beams - LED Sidelights - Mirror/Sunroof Closure - TTE Styling Kit - 18" Styling Kit Alloys with nitrogen filled Goodyear Eagle F1 Asymmetric Tyres - Bluetouch Multimedia Kit - Gromaudio AUX in - Black painted calipers with silver Lexus decals - 12 LED Dome Light - 96 LED Boot Light - Stainless Steel Sport Sill Plates - PIAA Silicone Wipers[/COLOR]
Lol, I wouldn't know what I was doing either but I'd have the sense to ask someone else or get in a pro - was the guy you bought it from using it like that?
2002 '02' IS200 SE Auto - DVD Satnav with Voice Activation - [COLOR="Blue"]Strathcaron Blue - Parking Sensors - 5000K HIDs with Anti-Glare Bulbs - PIAA 6500K Main Beams - LED Sidelights - Mirror/Sunroof Closure - TTE Styling Kit - 18" Styling Kit Alloys with nitrogen filled Goodyear Eagle F1 Asymmetric Tyres - Bluetouch Multimedia Kit - Gromaudio AUX in - Black painted calipers with silver Lexus decals - 12 LED Dome Light - 96 LED Boot Light - Stainless Steel Sport Sill Plates - PIAA Silicone Wipers[/COLOR]
ive been thinkning about changing my sub and amp recently cause i had very little bass.
however very little investigating and a change of a couple of pots on the amp and the car booms again
![[Image: LexuS-Copy.jpg]](http://i65.photobucket.com/albums/h204/Sparkystav/LexuS-Copy.jpg)
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
29-06-2018, 03:26 AM #5setting up sound systems are so critical.
ive been thinkning about changing my sub and amp recently cause i had very little bass.
however very little investigating and a change of a couple of pots on the amp and the car booms again
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
29-06-2018, 10:36 AM #7lol looks like he blew his budget on the sub, then got the cheapest roll of speaker cable with the small change he had left over? D'oh!
jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
greeny Howd u wire it?
Yes Oli, how did you wire it? No pics of the finished article!
I see a jumper is fitted there, for running it in serial. Is it dual 4 Ohm voice coils? So in series the amp would see 8 Ohm.
Presuming you have a 2 Ohm stable amp? You should wire the voice coils in parallel and run the sub at 2 Ohm for a lot more POWER!!
![[Image: tempsig2.jpg]](http://i121.photobucket.com/albums/o227/84stoney/tempsig2.jpg)
ad: It was a tough call to make, but the Supercharged IS200 is being retired. ad:greeny Howd u wire it?
Yes Oli, how did you wire it? No pics of the finished article!
I see a jumper is fitted there, for running it in serial. Is it dual 4 Ohm voice coils? So in series the amp would see 8 Ohm.
Presuming you have a 2 Ohm stable amp? You should wire the voice coils in parallel and run the sub at 2 Ohm for a lot more POWER!!
ad: It was a tough call to make, but the Supercharged IS200 is being retired. ad:Dark Samurai
05-07-2018, 07:03 AM #10We wired positive to red on sub, and negative to black on sub, obvious so it runs however it runs that way on 4 ohms? Bridged.
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