RF 3sixty

by ttocs
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I have been dreaming/planning on getting one of these for my truck. I came across a good deal on a 3sixty.1 and I thought the main difference between the .1 and the .2 was that the .2 gave you equalization for each speaker in a surround sound system(5 channels) where the .1 only gave equiliazation for a 2 channel stereo application(front rear and sub)? When I looked a little closer at the differences at the two it says that the .2 has user adjustible eq settings. Does that mean that the .1 doesn't have the ability for me to adjust the frequencys gains?


Replies (28)
newB on 12/15/2008 23:25:41
I know the .2 is worth the price difference, but if your getting the .1 used from a source other than RF then it is different obviously. I'll see if i can dig up some more info on the smd forum
-Drew

newB on 12/15/2008 23:34:29
make sure you've watched this....

http://www.youtube.com/watch?v=EhArwJq393k

-Drew


swez on 12/16/2008 02:28:20
After browsing the link above, the 360.2 analyzes HU output and tunes the vehicle to a flat response and time aligns all channels.

My take here, is that even if we tweak the out-bound HU signals, (Factory or Aftermarket) for flatness to amps & speakers, we still have to compensate for speaker performance curves, crossovers and cabin gain issues as well.

Tuning the out-bound audio signals from a Factory HU design makes sense. But from the speakers and cabin issues we encounter in the process, how does this product adjust for them?

In my mind, it has to measure test tones from the existing system, show the time alignment adjustments, EQ alignments in real time outputs and save them for future DSP adjustments. If the 360.2 can do that and than save the adjustment curves for fine tuning later, we have solid refererence points. If not, this nothing more than "smoke & mirrors" from RF's "Blind Gurus".

Swez

newB on 12/16/2008 05:02:52
"it has to measure test tones from the existing system, show the time alignment adjustments, EQ alignments in real time outputs and save them for future DSP adjustments. If the 360.2 can do that and than save the adjustment curves for fine tuning later, we have solid refererence points. If not"

yes and it can do it via bluetooth so you can sit in the drivers seat with a palm pilot and be doing all your adjustments without actually connecting to the unit.

-Drew

ttocs on 12/16/2008 10:28:56
my system was designed around my amp, limited edition pg octane which is actually made up of two amps and a base cube. The amp only has one rca input, it then takes that input and splits it so that it goes to the bass-cube and the sub amp, and then to the mids/highs amp. I thought the .2 only has the two channel eq ability, which is what I want.

swez on 12/16/2008 10:36:10
I get that part Drew and point well taken to a degree.

But, as you and I know well as live sound techs, it takes a calibrated and sophisticated mike and RTA tools to obtain the initial input/output data points, adjust EQ curves for optimal flatness and also perform corrections in time alignments for all frequency bands, (20-20,000 Hz) and distance to each driver/speaker in a given system.

This takes very expensive and complex gear and other DSP features to get a solid mix. Maybe there are plug & play devices that can now do this in a very small package. I'm just not aware of them.

To accomplish this, one would have to monitor test tones going into the processor, do it's tweaks and then adjust speaker and crossover curves to match as close as possible, the output curves desired. Do we agree on this point so far?

The last element that I am uncertain about, would be the bluetooth device, (mike, transducer) used, having the ability to accurately read that wide range of frequencies and come up with accurate presets for the processor. If the processor corrects for transducer annomlies, (Peaks and dips) it can be done.

What do you think? (Am facinated, but skeptical at the same time)
Swez

ttocs on 12/16/2008 10:55:26
the time alignment function is done where you enter the distance from your head to each speaker and it calculates the time difference for you.

The bluetooth device is nothing more then a display. It is like carrying the front of the eq with you in the pda. The sound is not transfered to BT, just the commands that control the eq.

Swez is starting to like this idea - you could tune the car from outside the car if you had good enough ears.

swez on 12/16/2008 16:20:08
Quote: "the time alignment function is done where you enter the distance from your head to each speaker and it calculates the time difference for you."

Yeah, we slow down the speed by timed delays of the front stage, to match what's coming in from other points so all driver signal arrive to a given point at the same type. (Time alignment basics)

Quote #2: "The bluetooth device is nothing more then a display. It is like carrying the front of the eq with you in the pda. The sound is not transfered to BT, just the commands that control the eq."

OK, I get that... a remote EQ display that accesses audio through the BT function and ? allows the user to adjust EQ through a hand held device? That seems pretty cool.

Hum, I can see a rig like this being very helpful in large format HT apps. But in the confined spaces of cars, trucks and vans the time delays are likely to be in very low mS's range. (What 10 (-3rd) = millisec right?)

That's like 0.35 m/mS. I doubt the human ear can really detect much of a delay in say 0.5 - 2.5 meters (0.88 - 1.75 m/mS) Speed of sound @ 20 C is 343 meters/sec. Intereresting, hardly seems a factor for most mobile sound apps.

Swez

PS Will have to look up this gizzmo and see what it can really do and how it all works. Thanks guys!

newB on 12/16/2008 17:36:17
Photobucket

-Drew

newB on 12/16/2008 17:37:30
btw the disk that taught me how to do a 10db gain overlap using the Oscope was the 360 startup disk and .pdf

-Drew

Ash on 12/16/2008 17:45:05
I researched both RF products before diving into a Audiocontrol piece. On paper both look good as far as capabilities except for the required use of a palm pilot which isn't cheap. Having a palm pilot just for it's use is sorta out of the way, so that idea was scratched.

Though I'm not skeptical, I believe they are more geared towards perfectionists in SQ as most ears won't discern the minute differences it will make with the time alignment. Some of us here probably will but have gotten around that in some other fashion. Still what's more important in which they become a band-aid is speaker location and actual positioning. There is almost no fix for a poorly aimed speaker! You can adjust for time alignment, but there is no fix for a driver that is severely off-axis. Slightly above mid bass frequencies start to beam somewhat. If you want to hear more details in the music, get within the beam as much as possible. Thus the reason kick panel installs have become so popular, better time alignment and listening position adjustability.

I would say maximize the speaker install first, then digital processing if needed. Keeping things simple can go a long way......


Ash

ttocs on 12/16/2008 18:10:37
I am going to be using diamond hex 5 1/4's that I will build an enclosure for in the same way I did for my truck. The entire system will consist of a single 10"(sealed) and the 5 1/4 componants. I will have the bass cube in the amp to help to tune the sub so it is more of the front/mids that I am concerned about and the tweeker in me loves EQs..... as I said I think I can get the 3sixyt.1 for $100 used, but NIB, and it should not be too hard to find either a cheap/used pda.

swez on 12/16/2008 18:19:22
Stand with Ash on this one too. Beaming MR/TW's cause listener fatigue at higher SPL levels.

Here, installing and aiming the front stage a few degrees off axis is prefered. It takes some of the shrill and edgy parts of that range down a few dB and allows for a nice blend too. A well designed tweeter is only 4-6dB down at 30 degrees off axis. We can add a little EQ boost above 2.5KHz., to balance them out or use the X-over attenuators.

Most quality Comps have a 30 degree window for the TW and even wider for MR. (MB is more like woofers/Subs and have a very wide propagation range) That's why custom Kicks and door pods do so well.

My 2 cents is all,
Swez

Ash on 12/16/2008 18:49:04
Agreed! The final say in the listening process is the speakers. There's always good use for an extensive EQ, but I've been drawn towards higher quality drivers that exhibit natural characteristics that I need. Processing comes later.

Don't get me wrong. I'd love to play with the 3sixty.2 to see what it can do, but at the same time it's easy to distracted with processing instead of quality drivers and installs. Not for everyone though. Sometimes mid grade speakers in inferior stock locales are the only way or are not worth modifying. But if you're going to go all out go with a audiophile grade set of drivers (low distortion, high resolution MB/ planar, ribbon TW as an example) in the best install you can do. Then lastly process. That's just me though....


Anyways, let us know how it turns out if you grab one.

Grdevs24zero on 12/16/2008 23:33:47
I've found that the most noticable beaming comes from big midranges, that can usually be helped with a lower LPF on the mid. Of course proper aiming will nearly nullify any beaming issues, but with a big 6.5" that's not always practical.

FWIW, I've heard of alot of people having problems with the Bluetooth going out on those 3SIXTYs. That was one of the biggest turn offs for me, and my biggest reason to go with a DRZ9225 after another month of saving instead.

ttocs on 12/17/2008 00:42:16
I have not heard about any quality issues.

newB on 12/17/2008 01:45:52
x2

-Drew

ttocs on 12/17/2008 11:24:42
so if you guys could get one that is barely used, almost NIB for $100 would you pass on it?

swez on 12/17/2008 14:59:07
If it's that low in cost, known to be in full working order and the budget allows... why not?

You'll have revert back to speaker level inputs off the HU used. But a guy with your skills and some extra time on hand, we'd all learn something when you finish. At least you won't be working in sub-freezing weather to do it righ? (Lucky Duck)

Speaking of which, it's time to go outside and fire up the old snow thrower and see if all is in order. We got a little snow last night and more pending this week. (Ahhh lovely... winter came a mite early to the Midwest this year)

Good luck,
Swez

Ash on 12/17/2008 17:57:05
I think it does has low level inputs. What about bandpass capabilities for active control of mb/tw combos? That would make it very doable, but not for the 400+. 100 bucks is a steal even used! Try buying an AC product used on ebay. I still can't get a decent deal on the digital dash controller to finish off my setup.

I say go for it! Also what about Alpine's module that is supposed to be similar somewhat? Anybody have any experience with that?

Grdevs24zero on 12/17/2008 18:28:38
At the time I was reading about the 3SIXTYs the problem was not acknowledged by RF. I read dozens and dozens of posts by members of different forums stating they'd been through as many as 4 replacements in some cases, while still having the issue. Looks like the very newest line has resolved the issue though.


http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/std_adp.php?p_sid=dThN9Dlj&p_lva=&p_faqid=945&p_created=1214261085&p_sp=cF9zcmNoPSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MjkzJnBfcGFnZT0x&p_li=


Grdevs24zero on 12/17/2008 18:37:59
Ash, if you're referring to the H701...

http://www.diymobileaudio.com/forum/diy-mobile-audio/5774-3sixty-2-better-than-pxa-h701.html

swez on 12/17/2008 18:52:50
Yep, Ash is right. The unit has both signal and line level inputs. That's good and had L/R front, L/R rear, Mono Center, Mono Sub line level outs too.

As for the active X-over settings, they give AP, BP, HP & LP selects. From what I see on page 13 of the manual, one can set the BP corner slopes anywhere they wish between 20 - 20KHz. The user can choose a 12 or 24dB/oct slope, channel leveling and delay all in the same menu. (That's a nice feature)

This leads me to think the BP feature is geared more toward MB in the rear fill or dedicated amp/speaker combo. Another use would be to provide steep roll off slopes for Comps and they need passive crossovers between MB/MR/TW functions.

Yep, a great price if the unit works properly and you have good BT connectivity and a compatible Palm Pilot device.

Swez

cplkittle on 12/17/2008 18:54:20
From the thread link you posted, 24zero:

"I'm using a 3SIXTY.2...love the unit. Simply wonderful in terms of interfacing with the fairly PITA stock system in the truck."

WHAT??? talk about putting a pinto engine into a ferrari. I can understand about sound leveling, but wouldn't a nicer HU be a more useful upgrade?

Maybe I am just old school, but I don't like a computer telling me what I like to hear. The only give I have in that department is time correction. I'm pro H701 all the way.

The 3sixty does look like a pretty cool unit, but it lacks on-the-fly adjustment capabilities.


Grdevs24zero on 12/17/2008 19:39:32
I'm not sure I see where you're coming from cplkittle. As long as it has user definable eq/ta/phase/xovers/whatever else it has, how is the computer telling you what you like to hear? Would that line of thinking be more in place when looking at the majority of amplifiers on the market that modify the input via an undefeatable EQ?

Alot of people use the piggyback controllers like the 3Sixtys, JL Cleansweeps, Audiocontrol units, etc., in order to keep the stock HU. I can see where you're coming from there, I don't see the point in keeping a stock head unit, but if you look at it from a practicality point of view, there's not a better way to add all the EQ, T/A, Active crossovers, etc. for less money than a piggyback controller on a stock head unit, unless you get a crazy deal on a good HU.

For the record, if I found a 3sixty as cheap as ttocs has I'd be all over it.

ttocs on 12/17/2008 23:20:50
there are a growing number of vehicles that it is just easeir to put one of these in then it is to seperate the heater/ac controls that are built into the deck.

I have used the cleansweap and was not all that impressed with it. I have heard of some noise issues with the 701 but have not used it or the RF.

I was finally able to get all the pieces to cover my consol today and spent my afternoon working on it and thinking about my current eq question. I realized that what I really enjoyed about an eq was the contol over the sub that it gave me(my last eq was prior to decks having sub outputs). This is not a problem as the octane has the bass cube built in, as well as the remote level output for the sub that I am going to install at easy reach on the consol(next project). It is a great deal for a $100 but I really need that money to put into the power wire, dist block and cables so that I can complete this and install the amp so I will wait.

MY BACK HURTS.......... I got home around 1 and started covering it. It is not a difficult piece to cover techinically but it is a rather long piece with just enough curves that it took me FOREVER. The consol is covered with vinyl now and the top of the arm rest was recovered. I got the plexi mounted as well as the leds to light it. I painted the grill yesterday and I am waiting till tomorrow to start wetsanding(1000) and to buff it out. Tomorrow I have to do some minor sanding on the back fo the arm rest, then paint and cover it and at that point the enclosure will be done. I will need a little help to wrangle the sub into the box as it is heavy as heck and I will need to have the console held on its end to load it. With the sub in the box I will have no choice but to remove my drivers seat to put it all in but hopefully by the start of the weekend I can have it in with pics. I'll get some ASAP

Grdevs24zero on 12/17/2008 23:27:13
Take it easy man, no need to overwork yourself. When it's done it's done, you can't very well enjoy it when you're too busy thinkin about your bones!

ttocs on 12/18/2008 00:06:35
tryin to finish up and get the house cleaned up before my folks arrive next week for the holidays..



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