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BlackX
01-15-2013, 11:38 PM
I currently have (4) Rockford Fosgate T16 6x5s in my Gmc Sierra. They are amped off with a Memphis Pr4x50 amp. I have them tuned to the best of my ability and they are decently loud, but I want louder. Does adding an Equalizer increase the sound in anyway? Any suggestions as to retuning ( I thought I did a fair job tuning it - no distortion, but could potentially not be putting speakers to their maximum ability)

Any ideas would be awesome! Thanks in advance

mylows10
01-15-2013, 11:51 PM
bigger amp ,more power ,deaden the doors

gckless
01-15-2013, 11:53 PM
^^This. Bigger amp, possibly better components, do a proper install. Install plays a huge part.

BlackX
01-15-2013, 11:57 PM
The doors are deadened. When I heard them in the shop they sounded much better than my setup. Probably should've asked what amp they were using. Are these speakers capable of being overpowered?

mylows10
01-15-2013, 11:58 PM
what s rms rating on them ?

Better-Action
01-16-2013, 12:01 AM
What's your crossover situation?

BlackX
01-16-2013, 12:01 AM
70 watt RMS - no crossover. Was told the amp had one built in

BlackX
01-16-2013, 12:03 AM
It also reads that is has (ICC Crossover
The Integrated Concealed Crossover hides the crossover inside the basket, creating a cleaner look and easier installation.)

Better-Action
01-16-2013, 12:06 AM
If the amp has one you need to set it. Could be your solution. If your speakers are playing low frequencies then this could be what's limiting you from setting your gain or volume higher. I'd look into it.

BlackX
01-16-2013, 12:10 AM
If the amp has one you need to set it. Could be your solution. If your speakers are playing low frequencies then this could be what's limiting you from setting your gain or volume higher. I'd look into it.

I might've been mistaken. (The ICC Crossover) is in the door speakers. The amp box says it has a "Fully variable high pass and low pass crossover"

mylows10
01-16-2013, 12:10 AM
this could be it to ,but 70 rms per side or both sides ?

mylows10
01-16-2013, 12:14 AM
i'd leave them in the back and replace the fronts with components ,also a larger amp for them as well

BlackX
01-16-2013, 12:14 AM
70 Watts RMS
140 Watts MAX

So I have each speaker wired to their own channel. Maybe I have them wired wrong. They are 4ohm speakers and this is my amp

WoofersEtc.com - 16-PR4X50 - Memphis 50W 4-Channel Full Range Class AB Power Reference Amplifier (http://www.woofersetc.com/p-8904-16-pr4x50-memphis-50w-4-channel-full-range-class-ab-power-reference-amplifier.aspx)


Here are the specs of the amp

Continuous Power at 4-Ohms: 50W x 4
Continuous Power at 2-Ohms: 75W x 4
Continuous Power at 4-Ohms Bridged: 150W x 2

Am I wired wrong?

av83
01-16-2013, 12:19 AM
Everyone always seems to overlook the need for this... Ccf seals to prevent cancellation. This will help tremendously.

http://imageshack.us/photo/my-images/84/20130112161518.jpg/

BlackX
01-16-2013, 12:31 AM
Aside of that do you think my wiring is done correctly?

VWBobby
01-16-2013, 12:38 AM
You are wired correctly. IF the amp was cable of driving down to 2 ohms bridged, then you could wire the speakers in pairs (2 ohms) for a nice 100W+ boost. Since the amp is only stable to 4 ohms bridged, you can only wire to 8 ohms, which will not benefit you. Leave it the way you have it.

Making sure the speakers and doors are sealed will help. Having a nice solid baffle to mount the speaker is a lot better than a flimsy door. Making the door panel rigid and avoiding losses due to flexing panels and air leaks will help. If you can make your install location (door/dash) act like a nice speaker cabinet, it will be light years ahead of a typical install.

I would turn on the High Pass filter and adjust it for around 70-100hz. Whatever sounds best while getting loud enough and not stressing the speaker. Back off on the volume if you hear any signs of stress and bump up the HPF a few HZ at a time. You do NOT want loud bass below 70-100hz hitting your main/mid speakers, unless they are ones that are designed for < 70hz authority - which most are not.

BlackX
01-16-2013, 12:47 AM
You are wired correctly. IF the amp was cable of driving down to 2 ohms bridged, then you could wire the speakers in pairs (2 ohms) for a nice 100W+ boost. Since the amp is only stable to 4 ohms bridged, you can only wire to 8 ohms, which will not benefit you. Leave it the way you have it.

Making sure the speakers and doors are sealed will help. Having a nice solid baffle to mount the speaker is a lot better than a flimsy door. Making the door panel rigid and avoiding losses due to flexing panels and air leaks will help. If you can make your install location (door/dash) act like a nice speaker cabinet, it will be light years ahead of a typical install.

I would turn on the High Pass filter and adjust it for around 70-100hz. Whatever sounds best while getting loud enough and not stressing the speaker. Back off on the volume if you hear any signs of stress and bump up the HPF a few HZ at a time. You do NOT want loud bass below 70-100hz hitting your main/mid speakers, unless they are ones that are designed for < 70hz authority - which most are not.

Thank you for that! Very useful. I'll try what you said tomorrow. As for the speaker baffle. I'll try to get with it on my carpentry skills to fab some up. Any tips or tricks? Or any problem I might run into building them? As for the wiring? Do you think its worth wiring up to see if the amp can withstand at 2ohm bridged?

Better-Action
01-16-2013, 02:29 AM
Thank you for that! Very useful. I'll try what you said tomorrow. As for the speaker baffle. I'll try to get with it on my carpentry skills to fab some up. Any tips or tricks? Or any problem I might run into building them? As for the wiring? Do you think its worth wiring up to see if the amp can withstand at 2ohm bridged?

I wouldn't recommended wiring at 2 ohms bridged since your only stable at 4. Because if it turns out it can't take it, means you most likely will be buying a new amp after that one Burns up.

I would turn on your highpass filter, set it to 80, reset your gain and see how it sounds.

VWBobby
01-16-2013, 02:32 AM
Anytime! For a baffle, I use MDF that has been coated in fiberglass resin. Otherwise MDF can swell up if it gets wet. Good quality plywood will also work well, marine grade if you can find it. If you have fiberglass skills, custom built door panels are the way to go.

According to the manual, the amp is "2 ohm stereo stable" http://www.memphiscaraudio.com/documents/2010%20PR%20Amps%20ClassAB.pdf

However, I do not recommend people risking/pushing their equipment on my advice. I don't want to be responsible for you blowing up your amp if you clip it or push it too hard. ;)

calebkhill
01-16-2013, 03:20 AM
Turn off all your booosts set everything to flat, turn your amps gainzs all the way down. Go up on your volume until it doesnt good. then go up a hair on your gain at the amp. Once you get it as loud as it will go with all your HU settings at flat, then mess with thr equilizer in the high and mid ranges. Dont boost eq too much itll bring distortion.

Also, if your using a subwoofer it will take away from your door speakers if your using heavy bass. back off on your sub some to bring the door speakers out, if you have a sub that is.

A bigger amp might help. your only puttin 50 watts to 70 watt speakers. You could probably bridge your speakers just be careful with your voulume and amp gains. If you bridge them Id leave your amp gains at zero.

A sub will take away from the 6x8s though, my 15s do. I lower the bass so I can enjoy my 6x9s

After you get it sounding decent then deaden everything. You should atleast get it to sound half decent without having to deaden eveyything at first though.

And yea, set your hpf Between 80-100, whichever sounds best

mlstrass
01-16-2013, 05:58 AM
Get better/louder speakers, RF isn't known for being loud...

calebkhill
01-16-2013, 07:22 AM
Get better/louder speakers, RF isn't known for being loud...

Idk mine are loud as helk and there coax

gckless
01-16-2013, 07:23 AM
Get better/louder speakers, RF isn't known for being loud...

This.

Also, you said you deadened your doors, which is a good start, but only half the battle. You need to seal the doors. You want to seperate the front and rear waves completely. Again, proper install.

mlstrass
01-16-2013, 01:13 PM
Idk mine are loud as helk and there coax

Your idea of "loud as hell" and mine are greatly different

calebkhill
01-16-2013, 08:28 PM
Your idea of "loud as hell" and mine are greatly different

How would you describe "loud as hell" then. Just curious, no disrespect.

TheUnderFighter
01-16-2013, 08:47 PM
How would you describe "loud as hell" then. Just curious, no disrespect.

Not Rockford. They made ok stuff a while back. The only thing worthwhile from them now is their amps. And those are overpriced. Also, you're using a capacitor, a sony xplod amp, and running RF 15" subs which are sealed. All those things suggest nothing loud at all.
Then you're recommending that a rookie set his gains by ear, instead of by a DMM, which would be the best thing to do right now.

To the OP, you'll notice a tremendous difference if you can confirm your gains have been set properly using a DMM (google it), and then deaden and seal your doors. Make sure the crossover points on your amp are set correctly as well.

calebkhill
01-16-2013, 09:41 PM
Also, you're using a capacitor, a sony xplod amp, and running RF 15" subs which are sealed. All those things suggest nothing loud at all.
Then you're recommending that a rookie set his gains by ear, instead of by a DMM, which would be the best thing to do right now.



Ok dont know why everyone here is so offensive and didnt asked to get flammed.
First i didnt suggest setting by ear, i said go up a hair.
Second i didnt ask to have my setup critisized, i just asked how the guy defines loud. I know thtere is alot of experience here and id like to know how loud sounds to him.........

BlackX
01-16-2013, 11:17 PM
Thanks for all the help guys, just one last question. My new amp for my subs came in today

This: Rockford Fosgate R1200-1D Mono subwoofer amplifier 1,200 watts RMS x 1 at 1 ohm at Crutchfield.com (http://www.crutchfield.com/S-C5CHrLzHfOa/p_575R12001D/Rockford-Fosgate-R1200-1D.html#overview-tab)

and I'm trying to get the most out of my subs. I have Two DVC 4Ohm Sundown SA12s wiring to them at 1ohm.

While tuning by ear I did the best to my ability but I dont quite understand what to set infrasonic filter hq, punch eq, frequency hz to, along with my gains. Could anyone shed some light on how I could go about getting a near perfect tune without crazy equipment.

I have a multimeter if that means anything :emb:

VWBobby
01-17-2013, 12:39 AM
That is a pretty nice amp. I am a Rockford fan myself. Anything above the budget lines of course. :) Make sure you have proper wiring and a decent battery to run that amp.

I would set your subsonic filter around 15hz. It will actually help prevent heating up the voice coils a little bit, especially since you can't hear anything below 20hz anyway. The older SoundStream amps had a subsonic set to 13hz fixed. It was actually said to boost output (due to eliminating loss) and was designed by ZED, so its definitely possible. I set the LPF to 65-80hz depending on the install and what sounds best.
Set bass boost to 0.
The gains should be set by DMM or oscilloscope.

Here's a few links to help you set your gains:
How to Set your Gains with a Multimeter - YouTube (http://www.youtube.com/watch?v=LBbvllZnJe8)
How to Adjust Amplifier Gains Using a Digital Multi-Meter - Knowledge Base (http://knowledge.sonicelectronix.com/car-audio-and-video/car-amplifiers/how-to-adjust-amplifier-gains-using-a-digital-multi-meter.html)

mlstrass
01-17-2013, 01:21 AM
How would you describe "loud as hell" then. Just curious, no disrespect.


youtube "team doa barney"

That set up looks reasonably loud...

calebkhill
01-17-2013, 02:08 AM
youtube "team doa barney"

That set up looks reasonably loud...

Will do, thx

Yeaaaa lol. Nice. $$$ talks

mlstrass
01-17-2013, 10:16 AM
Will do, thx

Yeaaaa lol. Nice. $$$ talks

Budget build...