audiobahn aw1200,s

by phatphrank1970
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Well thats all fine if i had a poket full of money to keep buing equipment ,but these speakers work just fine and was tring to build a better box for them.I have sence then figured out what was wrong and they are working better than before, THEY ARE RATTLING MY TRUCK APART!!!! It was a wire that was backwards so...........
I have some tens and want to know what freq should i tune the box to........ what i would lik to get out of these speakers are the higher tones but still be able to get decent lows too .they are jl audio vrc 10w 0


Replies (19)
swez on 07/17/2009 18:15:00
Good work... one coil wired out of phase is enough to make a decent sub sound terrible.

Here's the manual for the 10w0 series subs from JL:

http://mobile.jlaudio.com/pdfs/10_12_15W0_MAN.pdf

You can adjust the port length to a shorter one to bring the tuning port frequency up. JL recommends the port to be 3" dia and 14.7" L for about 30 Hz. If you cut the port length to 7" L and use the LPF tuned at 50-60 Hz., that should be just about right.

You can also use these subs in a sealed box of 0.75 cf/chamber and get the same results in a smaller box.

Swez

phatphrank1970 on 07/17/2009 23:33:43
Well thank you for the info that does help me in my venture.I have built the box to just alittle under 1.25 fb ( 1.13) for the jls
.In your opinon what is the average freq (to tune the port) for a pair of 12's ? and would you have made the fb 2.0 or 2.5?
The only thing I found on the net said that the manufacturer recomended 2.0 ported box but it did not say what freq to tune the port to, and yes you are right bout there not being any where to get info on this but in your expier. what would guess? At present it is tuned at 40 but if iwas to go lower on the hz would it sound any better? (RAP MUSIC)
And thanx for taking time and effort on these issues.....it is much appricated.
phat phrank



swez on 07/18/2009 04:12:39
Most 10's and 12's are ported down to around 40 Hz. (+/- 5 Hz.) As we move into larger subs, (15" & 18") they may go down to about 25 Hz. At that range, you don't hear the deep lows as much as feeling them on rumble tracks in Home Theater systems or DVD's. If your Bahn's are ported at 40 Hz now, extending the port will drop the tuning frequency even lower. (30 Hz is the lowest point to consider for RAP) Why, the lower we go in frequency, the less power the sub can handle w/o cone distortion issues. (Unloading the cone)

Since you are not using the JL's for deep bass at high power, an Fb of 1.13 ft^3/chamber, tuning higher is a good bet. In fact, coupled with the Bahn 12's for the deep lows, the 10w0's would make solid MB drivers. (50 - 350 Hz range) That would change the port dimensions in length only and a BandPass filter to block above 350 will be needed.

The port length here, would become 4.5" Long x 3" Dia., for 50 Hz. If you do not like the results, plugging/sealing the ports would give a nice sealed response curve and a safe bet as a fall back position.

How does that set of options sound to you?
Swez

phatphrank1970 on 07/18/2009 09:45:04
Thats great and again thank you for your extended efrort on helping me, I wanted to make sure that i was geting the best sound out of what i have or could have . I dont really know all that someone with your experties so thats why so many questions .
In the near future I will want to but some new epuip. that is all the same brand and would be glad to take your advice and direction on that .
What do you recomend on the band pass issue ?what brand and what is the average cost?? I got the above 350 hz part.

phat phrank



swez on 07/18/2009 10:08:47
You are a good student and a pleasure to work with Phrank!

Before planning of the BP filter system for your 10w0's, tell me what amp will be used and if it has HP & LP filters already and their range settings. Knowing that, have a few ideas we can employ, depending on your feedback.

Swez

phatphrank1970 on 07/18/2009 10:46:56
A power acoustic PA2-520 power series ,yes it does have HPF/LPF THE RANGE IS 40hz/250hz on both.
The deck also has settings built in too


swez on 07/18/2009 11:17:24
Great, that makes it easy to use F-Mods as part of your BP filter.

Here's what to do:

1. Set the PA amps' LPF to 250 Hz.
2. Install the F-Modes at the input side of the amp.
3. This gives a nice performance curve between 70 - 300 Hz.

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=266-272

The amplifier filters are often sloped at -12dB/octave and this is a gentle but effective rolloff slope. As for your Bahn amp settings, shift the LPF to 70 Hz and adjust as needed to get a nice blend of subwoofer and MB blending.

This one is easy compared to passive filter networks that connect after the amps output section. All the heavy lifting is done before the amp for a smoother BP curve.

FYI: By doing this method, porting the 10w0's is not needed or will be changed to a shorter port if you wish. In all reality, if you want things to look similar, install the port as mentioned, but it will have very little sonic affect and you'll not need an added Subsonic Filter either.

What say you Phrank?
Swez


phatphrank1970 on 07/19/2009 19:05:49
I say this is a lot better and easier than I had anticipated!!! I have the whole set up in the truck and it looks good ,sounds great ,and I am very happy with the over all results of my very first sub box .
Although I dont have the F-mods in yet ... the hz are set to 40 on both amps and the sound is still good .
The 10's act like they could handle a lil more power but the type subs that they are I'm not sure ...... it could be the subs or the amp??? I'm tryin to make chicken salad out of chicken...well you know.
What amp would (and where can I but these the cheapiist) you recommend that i buy for the future / and subs /door speakers ect. for an ear ringing good system for the box i have?
And thank you for the outstanding help .You have helped me tremendously .I wil definitely sponsor CK and tell people of the outstanding advice that you have so selflessly given me !!!
THANX
PHAT
PHRANK



swez on 07/20/2009 05:37:57
Try adjusting your LPF's on both amps to 70-80 Hz. This will give even more upper bass to the subs.

As for decent amps for this system, need a budget # and wattage of the Bahn subs. From there, we can do some hunting for some quality gear.

One good thing about a sour economy, the prices on most audio gear have dropped a lot since 2008.

Swez

PS Thanks for the comments and kudos. We try our best to help folks out when they pay attention. CLAP

phatphrank1970 on 07/20/2009 15:39:27
swez ,
The bahns are rated for 700w RMS . 4 ohms DVC The amp is an audiobahn A2502 DP "Digital "
250 x 2 chan @4 ohms
500 x 2 chan @2 ohms
750 x 2 @1 omh
bridged 500w x1 chan @ 4ohms
bridged 1000w x1 chan@2 ohms
How do you feel about digital amps ? I found on the net (ShaversUnlimited.com) where I could buy several of these amps that have been refurb. This exact same amp goes for $186.00.
Also the way I have this amp wired is series but only to one side of DVC ,(bridged ). What would you recomend for this to get good watts without putting to much strain on the amp ( the jl's are ran the same but it's a ( single voice coil ) so it is about the only way???????
If I connected the DVC in series will it sound beter than it does at present , or is parrell the way to go ,and will the A2502DP handle paralle?

To be quite honest Swez I dont have alot of money and was just woundering what to start tring to shoot for in the future .
There has always been alot of hype on what the best equip. on the market is, but we both no that that there are alot of B.S in this subject as to the watts and watts not.So being that you are someone who works with this stuff everyday you have seen it all and heard it all. I'll let you be the one to tell me what I want (AS FAR AS QUAL. AND SOUND )
What says you on this ?
P.S What do you think of the bahn amps? I know what you think bout there subs ! lol , If anything I would buy 10's first and possibly a new amp for them because in all honesty the bahn's sound great .I want to make sure that I have everything hooked up to best of it's ability.
phat



swez on 07/20/2009 18:12:14
Cash strapped? Join the club as many of us are in the same boat. Need a pole to fish with? I'll lend ya one. Pick one: Fly, spinning or bait casting.

The critiques on Bahn come from years on this and another forum where guys who knew what they were doing, were frying amps and speakers like fish in Crisco. One of our Golds repped them and was always doing returns for blown gear. That's why they lost favor in my eyes.

To get the most from the amp you have now, I'd use 1 sub per channel and each sub is wired for 2 ohms. As for the JL subs, a separate amp would be fine. These subs are rated at 125 Wrms/ea. So, a large amp is not needed to get them up to snuff. (300 Wrms, Class D amp, 2 ohms stable) Lots of great amp choices out there too.

Swez

phatphrank1970 on 07/20/2009 18:42:05
Ahhhh so its not just the subs it"s the whole market . I can understand that then , and if that is the case then I should start looking for something to replace what . I have had this equip. for about 1 year now .the same exact way with except. of the box.
Thanks for the in site on bahn .I will prob.go back to punch then .I seem to good luck with them in the past . It has been a while sence then and alot has come out since then ,was tring to see where your hart was at in the car audio game !
thanks for the tips on the wiring.
P.S I'm gonna go with the bait caster . lol


swez on 07/20/2009 18:54:19
It seems Bahn lost a lot of credibility a few years back do to performance and many field failures in DB Drag Comps. (02 and later)

Crutchfield used to handle a full line of Bahn products and dropped the line a few years back too. That's a big sign that they were not happy with Bahn's quality and service either. I don't know the details, but one day they were off the Crutch sales list and that was that.

Bait caster it is... I'll ride up front and try the fly rod. hehe

Swez

phatphrank1970 on 07/20/2009 19:44:53
LOL You are crazy !!! That's cool ...I do respect what you think or other wise I wouldn't have asked you your opinon ,but you have not told me what your pick is "in the car audio merry go round ",so i guess I will blindly find my own way through the endless gungle of car audio bannans .
It has been fun to talk to you brother and I will keep in touch as I find some other equip. to buy thanx for the help on the other issues.
Hey by the way I'm not partial to audio bahn .It just seems to be the better part of what I have at the present .You kinda got me scared that my s..t is going to fry at any moment .So I would really like to get some other stuff just in case it does .
phat
If you have any ideas............ "Rockford Fosgate" Donyou have any dirty laundry on this company??



swez on 07/21/2009 04:50:08
Sorry... did not mean to leave ya hanging on future gear choices. Yes, RF, Kicker, JL, JBL & Infinity would be very solid choices for amps and subs down the road.

Maybe I seem a little down on Bahn, but then again... if folks would use their equpment as designed and not abuse it, that would prevent a lot of bad news down the road. (In your case, prudence has paid off)

On the other side of the coin, Mfg's that do a little more to bullet proof their equipment, don't have as many field failures. No, I don't have any dirt to dish on RF gear. It's solid stuff as they have been in the biz a long time and learned the ropes well. It's pretty much the same with the other brands mentioned above.

BTW, am a bit cranky right now and it may be leaking out a little right now. Have been conducting a long and fruitless job search and it's getting me down and cranky after 7 months of poor results. We all know the economy is tight right now, but living with that fact is not phun.

Have you heard that song/seen video... "Their Shuttin' Detroit Down"! It hits the nail on the head for too many good peeps here in MI right now. I'll see if I can dig it up and link it here.

http://heavens-gates.com/usworkers/

Swez


phatphrank1970 on 07/21/2009 11:06:07
I feel your pain I have been outa work since 01/05 of this year also .
but keep your head up bro !! Good things happen to good people you seem to posess some good qualities .
It has been very hard being a convicted felon , no one wants to touch me so... the system seems to be set up for failure .I feel that they want me to come right back .But it gonna happen ya dig !
Where can I find RF products for a good price ?
never give up! phat


swez on 07/21/2009 12:57:39
Try these sites or ebay stores too...

http://www.onlinecarstereo.com/

http://www.woofersetc.com/

Oh yeah... still plugging away with a clean sheet and it's even harder for guys that have a rap sheet. Get this story...

Met the owner of a custom cabinate and countertop shop for a job posting. He had a crew of 3 guys and all were on probation, no driver's license and he just lost one guy to a probation violation. (Back in jail)

The first question he asked was if I had a valid driver's license? Yeah, sure do! Then, we went back to see the shop and meet the crew. All were wearing tracking cuffs??? He had 1 main installer in the field and they needed a driver to move finished goods out to the installer. (Hum)

We then went back to his office and he bragged about his 3 houses, a boat and all the toys he got off this biz. I was mad. He was paying these skilled guys peanuts while he raked in the dough.

Well, we talked pay and he handed me an application form. I looked him dead in the eye and said... "Do any of your crew get to taste some of the good steaks you rake in"? Nope, but they do have a job, he said.

I ripped up the app forms and threw them on the floor and walked out saying... "I would not work for a jerk like you for any amount of money. The way you treat others will come back to you in spades some day".
I meant every word too. Whew... got that off my chest huh?

Anyway, have a look around at the two discounter sites above and see what fits your goals for later. That Bahn amp may be a solid option for your Bahn subs. A smaller Class D would be fine for the JL subs.

Never give up!
Swez

phatphrank1970 on 07/21/2009 20:35:06
Swez !,
I just got done with parelle on the speakers and" MAN " that was what I was looking for !!!!!!!!! :) :) :) :) :) :) :) :) :) "YOU ARE THE MAN BRO " I cant believe the difference .YYYYYYYYYYEEEEEEESSSSSSSS. I'm so happy that I will have to have plastic surgery to remove the smile off my face ! It had good sound before but WOW what a difference .
I hope that this does not fri my stuff or become to good to be true . I cant describe to you exactly how happy I'am .
" THANK U THANK U THANK U THANK U " !!!!!!!!!!!!!!!!!!!!!!!
Man things have come a long way since I last had a system.
I also agree with you on peoples misuse of equipment .If you are going to do shows that only last for a few moments thats one thing ,but to have something you are planning to use everyday that is another. To put a massive strain on an amp for too long ...well...,no good can come of it. One can only expect disaster. Then you know whats next they go back to the dealer and complain that they dont know why thier system has failed .To me that is not cool . It is bad for buisness and for the people there in....
This could have something to do with what happened to Audio bahn as well ???? Who really knows the exacts .
I do know that punch has been round for some time ,I"m sure that they have not gotten worse with the years so..... I can see that I will have to have some serious cash to obtain RF's equip. 1800.00 just for the subs.
HEY, how do you feel about the Hifonics brute amp ? 2600 w RMS for 469.00 . When they first came out way back... there where some problems with the amps fry'in , are there still any probs with there line ?
phat



swez on 07/22/2009 13:18:53
Good work Phat!!! CLAP

Kinda figured a change in wiring of that Bahn amp to your Bahn subs would give more punch and yes... seems like you're happier than a clam?

HiFonics has come up a few notches in quality and reliability. Many here have gone to HiFinoics when they needed power and 1 ohm loads.

A few years ago, they were iffy on the DB Comp Circuits, but for the daily driver, they do a pretty good job. I'd think you can run the Bahn safely as is and no need to buy another amp until/if the Bahn amp croaks. (Not likely with 'prudent' use) The Bahn subs are the weak link in your system now. Just run them wisely and your're good to go.

Swez HAPPY





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