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Old 06-26-2008, 11:42 PM   #61
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Quote:
Originally Posted by tobycat1 View Post
1 L7 is weaker than 2 cvr's though. More displacement with 2 subs
lol now thats some fair head to head competition

My sub is soft all the time. it actually sounds better (softer) when turned up.

Either way man, one should find what they like and look at what is best for their needs.

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Old 06-27-2008, 01:23 AM   #62
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I don't know, these we're the clearest round subs I could find. I can't go square because thats mainly slow and low, and I listen to metal along with rap so I need the faster speed of the round subs.

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Old 06-27-2008, 10:06 AM   #63
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I don't know, these we're the clearest round subs I could find. I can't go square because thats mainly slow and low, and I listen to metal along with rap so I need the faster speed of the round subs.
check out the JL W7 series if you get a chance. clearest best "quality" sound ive ever heard from a sub i have a
10" that i put in my dodge ram and man was it beasty too
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Old 06-27-2008, 11:13 AM   #64
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the thing i like about my audiobahn sub is that is sounds great at low volume nice and soft and at high volume.
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Old 06-27-2008, 12:50 PM   #65
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I never really fully tuned/dialed in my 4ch amp. I don't know what each knob does or where i should start at. I know i need to do the front and back sepratly. Could sombody explain what each one does?

it has x over freq,gain and bass boost. Theres two of each one for the front and back.

edit-it also has fader on/off and two cross overs switches that have off,low,high
what do these do?
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Old 06-27-2008, 01:29 PM   #66
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with a 4ch amp you should be able to wire the front and back from it. as for all the different controls, it would be easier to see a picture of both sides. some amps are set up differently than others.
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Old 06-27-2008, 04:35 PM   #67
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with a 4ch amp you should be able to wire the front and back from it. as for all the different controls, it would be easier to see a picture of both sides. some amps are set up differently than others.
That is how i've had kit wired. I'll get pics later.
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Old 06-27-2008, 05:16 PM   #68
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hey tazman how does that slim sub work, i mean i know because of the size its nothin that'l rattle the windows but does it seem to do well?
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Old 06-27-2008, 05:26 PM   #69
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yes but you have a larger jeep than he and i do
What do you mean by a larger Jeep????
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Old 06-27-2008, 05:47 PM   #70
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unlimited
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Old 06-27-2008, 05:54 PM   #71
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unlimited
he has a sport
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Old 06-27-2008, 06:06 PM   #72
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he has a sport
ok now i feel like a dumba**
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Old 06-27-2008, 06:10 PM   #73
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pics of all the settings



wiring

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flowmaster40,hpd30 with aussie locker,currie upper joints,4.88's, lca skids,chromo shafts,vanco brakes,d35 with super 35 and arb locker,re 4.5" springs,currie arms,re front uppers,Re shocks in back,walkerevens shocks up front, Re track bars with currie jj joints,anti rock,ss brake lines,re rear sway bar links,jks 1.25" bl and mml,bfg 35x12.5 km2's,craiger soft 8's,ome steering stabilizer,currie hd steering,rockmen front bumper,emp tank skid,lots more too.
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Old 06-27-2008, 06:23 PM   #74
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bass boost is self explanatory, the x-over frequency is the frequency cut of point, gain is the power i guess you could say and it is not a volume control. to set the gain turn your stereo 3/4 of the way up and slowly turn the gain up from the bottom until there is very little distortion in the speakers, there may have to be some slight adjustment to get it right. im sure there is a better way to describe all of this, i think crutchfield has a page to describe everything.
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Old 06-27-2008, 06:31 PM   #75
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what is a frequency cut of point?
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Old 06-27-2008, 07:15 PM   #76
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it is to adjust the frequency sent to the speakers. lets say you set it to 150 hz, any thing under that frequency will be kept from going to the speaker. the off/high/low switch is to tell the amp if you are sending just a high frequency, a low frequency, or you can have it off.
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Old 06-27-2008, 07:21 PM   #77
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so i would want to set it so the bass goes to the sub. what would that be around 80hz?
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Old 06-27-2008, 07:26 PM   #78
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heres what the fader does.

Fader Button: You can connect one or two pairs of input cables to the amplifier. If only one pair of inputs is available, the amp's Fader button allows you to feed signals to all four channels from the single input pair. In this case, the fader of the source unit will not affect the output of the amplifier. If two pairs of inputs are available, the amp's Fader button should be pushed in (Off Position), allowing you to use the fader of the source unit to control the front to rear volume of the amplifier
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flowmaster40,hpd30 with aussie locker,currie upper joints,4.88's, lca skids,chromo shafts,vanco brakes,d35 with super 35 and arb locker,re 4.5" springs,currie arms,re front uppers,Re shocks in back,walkerevens shocks up front, Re track bars with currie jj joints,anti rock,ss brake lines,re rear sway bar links,jks 1.25" bl and mml,bfg 35x12.5 km2's,craiger soft 8's,ome steering stabilizer,currie hd steering,rockmen front bumper,emp tank skid,lots more too.
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Old 06-27-2008, 07:33 PM   #79
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Bass Boost is obviously the bass.. loud, little etc...

The Xover (off, lo, and hi)is a very good tool when you get with multiple speaker setups. Let say you have 4 voice speakers and you have 1 or 2 big subs. If you run bass thorugh the 4 speakers they will distort it so you want the hi pass filter ON. This will simply turn off the lows (Bass..) from the speakers so they can do their jobs and produce good voice and highs. On the other end you want the subs to do their job right. Giving them high voice and similar high frequencies can damage them so you want only the lows going to the subs. This is where you turn on the lo xover.

Next thing is your x freq. xover dial (works when you turn on the xover to lo). This moves the bass to the frequency you selected. Lets take your dial for example. You have it turned to 125 (12 o clock). Well in a song the bass is in all lower frequencies while what this knob does is it concentrates it into that frequency so you have the bass you want. For example i like soft LOW bass. I simply turn the knob to 50 and i will get more harmonic soft LOW bass that moves the sub A LOT and will make you feel the bass with your body (human ear cannot hear most low frequencies). If you like hard loud bass that "HITS" you like some one is hitting you with a hard object, turn it up to 200. I have mine setup about 55ish because i love soft bass.

Now gain.
I like to compare the Gain to a multiplier. Simply takes your signal and multiplies it by a number. Let me try to explain this with an example. You have your stereo running on low and you have the gain way up with the bass boost low. This way you get just enough of bass for the volume level on your stereo. Well you turn it up and since its a multiplier, it increases fast so now you have a problem. You barely turned up the stereo and the bass is way too loud.
On the other hand you can have the bass boost turned up to max and the gain very low. This works the other way around. You have your cd player on low and the bass amount is great. You turn up the stereo and the voice and stuff increases but your subs stay quiet because the gain is low.

There is a good balance where you have the volume low, the bass is low and just the level you want it, you turn it up and the bass is just at the level you like it. This is my simplest explanation.
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Old 06-27-2008, 08:06 PM   #80
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so i would want to set it so the bass goes to the sub. what would that be around 80hz?

it is different with every amp and speaker(or sub) combo. what i do for tunning the amp for my sub is to put on a song with a large range of bass frequency, this way i can go by sound. i start with the gain, then the frequency, the sub-sonic, and then the phase on my mono amp.
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Old 06-27-2008, 11:18 PM   #81
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so tripp if i have the switch set to low the higher the knob is set the harder the base hits? If i have the switch set to off or high the knob doesn't do anything. Is that correct?
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Old 06-27-2008, 11:31 PM   #82
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so tripp if i have the switch set to low the higher the knob is set the harder the base hits? If i have the switch set to off or high the knob doesn't do anything. Is that correct?
yes sir, The frequency xover only works when the setting is set to lo.

The lower the knob is set, the softer the bass will be. The higher the knob is set, the harder the bass will be.

This is a good song. (yes it is free and not illegal)
Download it from here and the people that made it are from realmofexcursion.com
http://realmofexcursion.com/audio/Ba...ssiloveyou.mp3

This song has tons of low end bass that you cannot hear however you can easily see the speaker move. Download the song, put it on a cd whenever you burn your next cd and play around with it.
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Old 06-27-2008, 11:37 PM   #83
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I need to decide weather i want to order the sub then if i do i'll wait and set it all up at one time.

Thanks
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Old 06-27-2008, 11:41 PM   #84
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i donno man, i set mine up so the speakers are powered by the head unit. I have the hi pass filter turned on so the regular speakers only get the voice and the high frequencies so i have no distorstion since they are not getting trashed by trying to play bass. Then i have my amp and my sub which has the lo pass filter on so i'm not getting any voice or higher frequencies to the sub so this way i'm not trying to make it play something that it cant. It sounds beautiful and for the people that say a jeep cant have a good audio system. well you're wrong.
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Old 06-27-2008, 11:54 PM   #85
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here is a little test tone so you can see the difference in frequency It starts off very low 20hz and then goes up to 250 hz which is at the high end for quality bass (high quality headphones or sound system required)
http://realmofexcursion.com/audio/te...50hz_sweep.mp3


Listening to this loud has a good chance of damaging your equipment (very low frequencies) and should only be used as a test at lower volumes.
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Old 06-28-2008, 12:31 AM   #86
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yes sir, The frequency xover only works when the setting is set to lo.

The lower the knob is set, the softer the bass will be. The higher the knob is set, the harder the bass will be.

This is a good song. (yes it is free and not illegal)
Download it from here and the people that made it are from realmofexcursion.com
http://realmofexcursion.com/audio/Ba...ssiloveyou.mp3

This song has tons of low end bass that you cannot hear however you can easily see the speaker move. Download the song, put it on a cd whenever you burn your next cd and play around with it.
Ya, mine is set really low on my amp I think. I just went down til I could hear every little spike
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Old 06-28-2008, 10:04 AM   #87
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LOL you should see my computer setup (6.5" altec lansing sub into a 12" sub box.. sounds amazing and its loud enough to rattle my cabinets in the other end of the apartment), i can easily play the 5hz tone. At this point you can clearly see the speaker move in and out very very slowly It cant play the 1hz tone though, its just way too low frequency.

what do you mean by till you could hear every little spike? If thats the case then you have it setup higher. Lower frequencies are hard to hear man and require tons of voltage to be produced which is why its very expensive to make subs and amps that go that low. If you move the frequency xover up then you will be able to hear them easier.
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Old 06-28-2008, 03:53 PM   #88
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8ga is totally fine. buy a distribution block to spilt the power to the two amps, that's the way to do it. also can i just say one thing... What's with all the Crutchfield references?? everybody on the forum sh!ts on Quadratec all the time... don't you realize Crutchfield is the Quadratec of Car Audio!?!!!
I wouldn't use anything but Crutchfield. I've bought car stereo stuff from them for years. Customer service is great and their price still beats the stores. Recently bought a 50" LCD from them. Delivered right to the stand in my living room and saved $500 compared to picking one up from best buy.

FWIW, I recently purchased some stuff from Quadratec (first time). They did screw up and send me mirror brackets for a YJ instead of a TJ, but when I called they immediately shipped the right ones and let me keep the others. Ebay!!!

As for the actual topic... I can't say whether 2 ohm is better then 4 ohm, but I can say for certain that it is EXTREMELY important to match the source with the load. Otherwise you will not get maximum power transfer and may let the magic smoke out of the amp.
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Old 06-28-2008, 04:14 PM   #89
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As for the actual topic... I can't say whether 2 ohm is better then 4 ohm, but I can say for certain that it is EXTREMELY important to match the source with the load. Otherwise you will not get maximum power transfer and may let the magic smoke out of the amp.
yup, going lower ohms will be louder however will be more load so unless you have a safety built in on your amp to shut it off, you WILL burn it out.

Let me give you an example, imagine you have an amp that puts out 400 watts at 2 ohms, if you put on a 2 ohm speaker, you will get the entire 400 watts however if you put on a 4 ohm, you will get much less watts than that. Now i dont know if it will be by half (200 watts) however it will be less than 400.

Next thing you should keep in mind is the dual and more coils in a sub.

This is similar to 2 or more speakers put together in a single speaker. Let say you have the amp above which is 400 watts at 2 ohms. The amp does not care if you have 1 or 2 or 10 speakers connected to it, all the amp cares about is that it sees 2 ohms or more of ohms. (lower ohms will kick in the safety or burn it out)

Let say you want only one sub connected to the amp but you want to use its maximum power. Well, you can either look for a single voice coil that is 2 ohms or you can find a dual voice coil and wire it differently. You can get a sub that has dual 4 ohm voice coils and if you wire them in parallel, your end load will be 2 ohms. You can also get a dual 1 ohm sub and wire it in series for 2 ohms of load. The lesson is you want a sub with the lowest ohms your amp can support.

Here is an image that i did a while ago to show you the load of each voice coil and and final loads that your amp will get.
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Old 06-28-2008, 04:25 PM   #90
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I am running a punch 200 wat rms amp with a 10" kicker compvr. I have a sound bar with alpine 5 1/4 and some extra tweeters mounted to the front speaker trim.


Whats every ones ideas for securing the speaker box in the back? I have 2 pieces of metal run through the hooks in the floor and screwed to the back of the box.

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