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JL Audio Fathom 13" Sub - Page 118

post #3511 of 6764
Gotham day will arrive fast, they can have one within a week I am told ! GREAT

I will make the space,it will positioned in the best spot in the room. What else for this showpiece if subsonic goodness.
post #3512 of 6764
Quote:
Originally Posted by TheEAR View Post

Gotham day will arrive fast, they can have one within a week I am told ! GREAT

I will make the space,it will positioned in the best spot in the room. What else for this showpiece if subsonic goodness.


Arthur, at what point (please be specific) did you stop taking your medication?
post #3513 of 6764
Quote:
Originally Posted by TheEAR View Post

I will make the space,it will positioned in the best spot in the room. What else for this showpiece if subsonic goodness.

sounds like your dual F113s are going to get pushed to measily surround or computer duty! what a horrible fate! Better just to sell them to me for cheap...
post #3514 of 6764
Quote:
Originally Posted by RMK! View Post

Arthur, at what point (please be specific) did you stop taking your medication?

and he's got no excuse with the socialized medicine in Canada
post #3515 of 6764
msmith_JL,

Any reason why JL chose foam surrounds on the fathoms over rubber?
post #3516 of 6764
My medication ...I never took any,too many color pills to take. Now I am taking pain killers, as I have a right hand that looks like one taken from a bad movie(work accident !) .

Still this will not stop me. I am pushing the quest(yeah quest,more like dementia)for absolute saturation.

The Gotham will serve as center channel support(the center speaker will be on tall rubber feet) and flanked by Fathoms. That is the secret plan. Flanked by mains...and by a load of DIY and competent commercial subs.
post #3517 of 6764
Quote:
Originally Posted by scanido View Post

msmith_JL,

Any reason why JL chose foam surrounds on the fathoms over rubber?

Good question. Rubber is more durable than compressed foam. Not like the compressed "foam" used by JL is a weak link. I have the first Sunfire (used compressed foam sourrounds)...a few years of use and still in like new condition. I treated its sourrounds...slows the drying up process a good deal.
post #3518 of 6764
Quote:
Originally Posted by TheEAR View Post

My medication ...I never took any,too many color pills to take. Now I am taking pain killers, as I have a right hand that looks like one taken from a bad movie(work accident !) .

Still this will not stop me. I am pushing the quest(yeah quest,more like dementia)for absolute saturation.

The Gotham will serve as center channel support(the center speaker will be on tall rubber feet) and flanked by Fathoms. That is the secret plan. Flanked by mains...and by a load of DIY and competent commercial subs.

You may want to start taking the red ones again.

Sorry about the hand ... Please tell me you're NOT going to put your CC on top of the Gotham???
post #3519 of 6764
RMK!,

Yes I will !!! Like I have said the rubber feet will be placed on the front "elevated" parts of the sub and I will be able to use the controls(Gotham) no less.

This is my secret plan. I will post plenty of pics when it is said and...done. Now I have to use caution as I can lift nearly nothing for the next two to...three weeks.
post #3520 of 6764
I'm thinking of buying a pair of Fathoms. Can anyone PM me a ballpark figure (Street Price) of what I can expect to pay for them. I'm trying to figure if my secret stash will cover them or if I'll need to consult my banker (Wife) .
Thanks for any help.
post #3521 of 6764
Quote:
Originally Posted by scanido View Post

msmith_JL,

Any reason why JL chose foam surrounds on the fathoms over rubber?

A few reasons, actually.

Foam is significantly lighter than rubber (affects moving mass)
Foam has better lateral stability when the roll is very large
Foam is less likely to pucker at high excursions.

We do use rubber and synthetic rubbers on other designs, but when the excursions get really long, foam is a better choice in our opinion.
post #3522 of 6764
Quote:
Originally Posted by TheEAR View Post

My medication ...I never took any,too many color pills to take. Now I am taking pain killers, as I have a right hand that looks like one taken from a bad movie(work accident !) .

Still this will not stop me. I am pushing the quest(yeah quest,more like dementia)for absolute saturation.

The Gotham will serve as center channel support(the center speaker will be on tall rubber feet) and flanked by Fathoms. That is the secret plan. Flanked by mains...and by a load of DIY and competent commercial subs.

Anychance of a picture or two? Or a link to pictures Pritty Please id love to see all those subs
post #3523 of 6764
This is where the thread gets interesting.
post #3524 of 6764
Trying to corner me and my subs into...a corner. Corner adds output.



Click on see images posted by user...there are a few pics. You want to see all my subs and gear. Not there,I will refresh pics and post new ones.
post #3525 of 6764
Hey Manville,

Any suggestions on how to care for the foam surround? I live in the desert with extremely low humidity.
post #3526 of 6764
Quote:
Originally Posted by JamesK8 View Post

Hey Manville,

Any suggestions on how to care for the foam surround? I live in the desert with extremely low humidity.

That is a great question.

One man who goes by the name of Bob Carver (not a JL employee... ) mentions in the user manuals of his subs (not JL) that Mink Oil is great to treat compressed foam sourrounds.

I have applied this to many subs I have that use compressed foam sourrounds and it works,the drying/deterioration is greatly reduced (compared a treated unit with one untreated of teh same model.



Lets see what Manville has to say.
post #3527 of 6764
Thanks for your response Arthur.

To be honest, I didn't even know this was a problem so you may have prolonged my F113. Thanks. I really love this sub.
post #3528 of 6764
This question has already been answered by Manville.




Quote:
Originally Posted by msmith_JL View Post

Gentlemen,

Foam surrounds have come a long way in the last ten years and we use them extensively in much tougher automotive environments. The newer foam materials have much longer lifespans than older materials that tended to dry-rot after a few years. While I cannot give you a specific prediction of how long it will last in your specific environment, we feel confident the materials used in our subwoofers will last longer than a decade.

Mink oil is not recommended... only the pure distilled essence of hummingbird wings should be used.... I'm kidding, of course: THERE IS ABSOLUTELY NO NEED TO TREAT THE SURROUNDS WITH OIL or any other substance. This could do more harm than good.

As for the service parts support for our products:
We strive to provide service parts for our products for as long as possible, but we commit to providing parts for at least seven years from the date of discontinuation of a product. Being that Fathoms will probably be built for a few more years as they are presently constituted, this will add up to a decade or more. There have been some isolated cases where parts became impossible to source due to suppliers that went under, but we have contingency plans in place now that should prevent these scenarios from occurring.

Hope that answers your questions.

Manville Smith
JL Audio, Inc.
post #3529 of 6764
Thanks Mojomike.
post #3530 of 6764
The best thing to do for our foam surrounds is to leave them alone. They are made from a very robust polyester compound and are far more durable than old foam compounds that used to dry-rot.

No minks need to be harmed to assure their longevity. I can't see how an organic oil like Mink Oil would help a synthetic polymer, either.

Quote:
Originally Posted by TheEAR View Post

That is a great question.

One man who goes by the name of Bob Carver (not a JL employee... ) mentions in the user manuals of his subs (not JL) that Mink Oil is great to treat compressed foam sourrounds.

I have applied this to many subs I have that use compressed foam sourrounds and it works,the drying/deterioration is greatly reduced (compared a treated unit with one untreated of teh same model.



Lets see what Manville has to say.
post #3531 of 6764
Quote:
Originally Posted by TheEAR View Post

Trying to corner me and my subs into...a corner. Corner adds output.



Click on see images posted by user...there are a few pics. You want to see all my subs and gear. Not there,I will refresh pics and post new ones.

WOW you really are crazy

Ultracubes nothing ultra when compaired with that red 18 LLT i bet

Dont know why but my fav is the opposing 15s box, love it and it has given me ideas for my next build, a little off topic but how does it (twin 15s) compair with the 18 LLT and the 113, rate them forom 1 to 3 please

Thanks a lot for posting those pictures
post #3532 of 6764
Great pictures Ear, you truly are a subwoofer madman!
post #3533 of 6764
Quote:
Originally Posted by The Bogg View Post

Great pictures Ear, you truly are a subwoofer madman!

Wait a few days...I will have some great drivers that will end up in a few DIY subs posted. Mad I tell you...mad.
post #3534 of 6764
Quote:
Originally Posted by TheEAR View Post

Wait a few days...I will have some great drivers that will end up in a few DIY subs posted. Mad I tell you...mad.

What is the easiest way to do that great window bracing you have on the red sub? Is there a thread? I looked but did not come accross one.

Subs are the funnest part of this hobby, you should be the happiest person here

Thanks in advance!
post #3535 of 6764
Quote:
Originally Posted by mjaudio View Post

What is the easiest way to do that great window bracing you have on the red sub? Is there a thread? I looked but did not come accross one.

Subs are the funnest part of this hobby, you should be the happiest person here

Thanks in advance!

I do not want to bring other subs or DIY,here being the JL Audio Fathom thread. Take a look in the DIY speaker section of this forum. My Two EBS subs comming is there.
post #3536 of 6764
Quote:
Originally Posted by TheEAR View Post

I do not want to bring other subs or DIY,here being the JL Audio Fathom thread. Take a look in the DIY speaker section of this forum. My Two EBS subs comming is there.

Good point, I will keep an eye out.
post #3537 of 6764
hi Manville, I asked this in another thread but I guess this is the place to get an answer. I'm sure its been brought up before but I probably missed it. In any case I was wondering why the engineers of the fathom and the gotham decided to go with a sealed design over a smaller ported design. I realize the most obvious reason was to reduce the size, WAF etc... I'm wondering if it was also a concious decision for sound quality as well, and if so there seems to be people on the side of the fence that say sealed vs ported sound just as good, and those that think sealed sounds better than ported design. I realize you might have to get back to me on this one but I'm curious as to what the opinions are of your engineers on this (as I know you make ported and sealed boxes for car audio).

edit: I should clarify I'm not trying to start a flame war/argument here, just curious for myself so perhaps a pm reply might be best
post #3538 of 6764
swerveddy,

Generally speaking <<< NOTE the word "Generally" >>> ....

A sealed design is better suited for achieving good LF extension in a small package.
A sealed design is more predictable and linear
A sealed design avoids any issues with port turbulence, etc.

We are certainly not against ported designs, which can make a whole lot of sense when small size is not such a big consideration. Each box type has pros and cons and each can be made to work very well (or very badly) depending on the skill of the system designer.
post #3539 of 6764
THanks ML..


Some great news for us canucks in the Vancouver area... HI FI Centre downtown vancouver is getting a fathom demo in early next week supposedly... after a long wait... finally a chance to hear this devil. I really look forward to giving it a workout. Ironic that soon after the fathom was released.... I brought it up with a salesman at this shop, mentioned it was no budget sub...a real performer and asked if they could order one in or would eventually deal them... they said no obviously.No one had heard of the company or the sub apparently...in fact they were quick to point me in the direction of REL and dismissed it right away... LOL looks like they changed thier mind.

- Ed
post #3540 of 6764
Quote:
Originally Posted by swerveddy View Post

hi Manville, I asked this in another thread but I guess this is the place to get an answer. I'm sure its been brought up before but I probably missed it. In any case I was wondering why the engineers of the fathom and the gotham decided to go with a sealed design over a smaller ported design. I realize the most obvious reason was to reduce the size, WAF etc... I'm wondering if it was also a concious decision for sound quality as well, and if so there seems to be people on the side of the fence that say sealed vs ported sound just as good, and those that think sealed sounds better than ported design. I realize you might have to get back to me on this one but I'm curious as to what the opinions are of your engineers on this (as I know you make ported and sealed boxes for car audio).

edit: I should clarify I'm not trying to start a flame war/argument here, just curious for myself so perhaps a pm reply might be best

I think JL went with a small sealed design with their home subwoofers because they know that they won't be able to compete with ID companies' prices if they went with large ported subwoofers. But since they have already designed the fantastic W7 woofers, they can compete in ultimate small size and sound quality, where no other company can compete in, therefore making them really successful.
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