Need some help with my system!
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
First, sorry for the double post... I actually thought I had active crossovers...lol. so I'm good!!! I got a deal from a friend on a brand new jl 10w3v3 4ohms. he went with a bigger sub! I hope this sub works out...
Last edited by 04zjimc; Dec 8, 2015 at 08:36 PM.
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 906
From: Tulum, MX
Do you have an enclosure for it or just the sub? If you do not have an enclosure -Look to Dennis at DD for either a custom or a Stealthbox. Either way you go-that man is a wealth of knowledge and willing to help anyone.
You want to bridge channel 3 & 4. It would probably + on 3 and - on 4.
You want to bridge channel 3 & 4. It would probably + on 3 and - on 4.
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
Do you have an enclosure for it or just the sub? If you do not have an enclosure -Look to Dennis at DD for either a custom or a Stealthbox. Either way you go-that man is a wealth of knowledge and willing to help anyone.
You want to bridge channel 3 & 4. It would probably + on 3 and - on 4.
You want to bridge channel 3 & 4. It would probably + on 3 and - on 4.
Last edited by 04zjimc; Dec 10, 2015 at 08:05 AM.
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Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
Connect HU front RCA outputs to amp front channels, and HU sub RCA outputs to amp rear channels.
On HU setup, set front output to HPF on with cutoff of 100 Hz (can be adjusted later if needed), set sub output LPF to 100 Hz.
On amp, adjust *****/switches to...
Rears: LP, 12, half way between 80-250, all the way down, low
General: 4, rear, f+r
Fronts: low, all the way down, 80, 12, HP
Connect front left & right speaker outputs to inputs on passive crossovers.
Use rear/left (+) and rear/right (-) speaker terminals to feed a 4ohm sub... single coil is easy (+ to + and - to -), if dual coil 2 ohm sub then connect amp + to sub1 +, sub1 - to sub 2 +, and sub2 - to amp -
Once everything is connected you can adjust the Input Sens *****. Start with a 50Hz tone. Set radio to 75% of max output volume and play the tone on repeat. Turn up amp rear gain **** until sub clips (it will be obvious on the sub, it goes from a smooth rumble to a nasty farting sound), once you hear the clipping turn **** back down until it stops. Note the location and turn it back to 0. If HU has a sub polarity adjustment you can play with it to see what sounds better, but if all wires are connected properly it is usually better when off or normal.
For the fronts you can play 500/1000/2500Hz tones and find the max safe level (2500 may be higher than 500, set to the lower limit), or just use music that has a full sound. Do the same adjustments as with sub, but leave gain **** in proper position.
Turn radio volume down to comfortable listening level, adjust sub gain up to max safe level from sub test. Now listen to the music, if you're lucky it will blend properly, if not turn down the one that is overpowering the other (make sure you don't go above predetermined max safe gain level from earlier tests, that's how speakers get blown when you crank it up).
On HU setup, set front output to HPF on with cutoff of 100 Hz (can be adjusted later if needed), set sub output LPF to 100 Hz.
On amp, adjust *****/switches to...
Rears: LP, 12, half way between 80-250, all the way down, low
General: 4, rear, f+r
Fronts: low, all the way down, 80, 12, HP
Connect front left & right speaker outputs to inputs on passive crossovers.
Use rear/left (+) and rear/right (-) speaker terminals to feed a 4ohm sub... single coil is easy (+ to + and - to -), if dual coil 2 ohm sub then connect amp + to sub1 +, sub1 - to sub 2 +, and sub2 - to amp -
Once everything is connected you can adjust the Input Sens *****. Start with a 50Hz tone. Set radio to 75% of max output volume and play the tone on repeat. Turn up amp rear gain **** until sub clips (it will be obvious on the sub, it goes from a smooth rumble to a nasty farting sound), once you hear the clipping turn **** back down until it stops. Note the location and turn it back to 0. If HU has a sub polarity adjustment you can play with it to see what sounds better, but if all wires are connected properly it is usually better when off or normal.
For the fronts you can play 500/1000/2500Hz tones and find the max safe level (2500 may be higher than 500, set to the lower limit), or just use music that has a full sound. Do the same adjustments as with sub, but leave gain **** in proper position.
Turn radio volume down to comfortable listening level, adjust sub gain up to max safe level from sub test. Now listen to the music, if you're lucky it will blend properly, if not turn down the one that is overpowering the other (make sure you don't go above predetermined max safe gain level from earlier tests, that's how speakers get blown when you crank it up).
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
I like to use the HU settings for the cutoff points so you can adjust it while driving if you really want to, and the amp **** numbers generally aren't as accurate so I'll make sure they're set high enough to allow the HU some adjustment.
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
ok. I forgot about the h/u lol. more fun!
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
Ok I have everything hooked up and all settings are set. Don't hear much from the sub??? Adjusted sensitivity... level and the front speakers don't sound to gd... they are clear but something is off. where to start?
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 906
From: Tulum, MX
I'd like to see ya have more power to the sub to be honest.
Now where are your gains set? Check the HU settings first. You want to make sure you have the HP/LP filtering set correctly. Work on one set of speakers at a time to narrow it down
Now where are your gains set? Check the HU settings first. You want to make sure you have the HP/LP filtering set correctly. Work on one set of speakers at a time to narrow it down
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
that's set correctly! I hear something from the sub but sounds very low... I do have a question I hooked the rca from the h/u sub rca outputs was this supposed to go from the rear rca output?
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 906
From: Tulum, MX
No. Sub outputs is fine. Rears could be used for fill . Temp bridge the front on one channel. before that turn the gain up some see how she sounds from there. Not to sound like an *** but check to make "sub" is turned on in the HU
Last edited by yamabob; Dec 12, 2015 at 12:56 PM.
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
Thread Starter
Drifting
Joined: Aug 2014
Posts: 1,630
Likes: 181
From: North pole
ok im having a problem trying to get pandara working with my phone I don't have a I phone but a galaxy3 but that should still work...I tried afew times with the manual..but no luck? I should add I did get sound but it disappeared??
Last edited by 04zjimc; Dec 12, 2015 at 04:18 PM.