Lots of variables on this. I just wondered why my thin wall box with open back sounds better than what I tried to put together as an upgrade. The heavier and sturdier item is close to what the original FE127e white sheet recommended (in general.)
This is old material. GM helped with it many years ago.
Simply put, the old thin walled box which was re-purposed from a mini system by changing the generic 4 in. in it to an FE127e. That one I Enabled and the job turned out fairly well.
This thin walled box is little more than pressed board. One fell apart already from use over the years.
If I can't reuse the sturdier empty I have, what material would work
just to get one better-constructed.
If you remember the Radio Shack Minimus, The box is about that size and used at close range in this computer room. I'm shrinking down all my audio for use in a smaller space. No bass needed. The FE127e EN (homemade) sounds fine.
I thought of layering something like hard board which I have or half inch ply.
My tools are limited and I have no actual shop area. I've learned to use a saw board.
This is old material. GM helped with it many years ago.
Simply put, the old thin walled box which was re-purposed from a mini system by changing the generic 4 in. in it to an FE127e. That one I Enabled and the job turned out fairly well.
This thin walled box is little more than pressed board. One fell apart already from use over the years.
If I can't reuse the sturdier empty I have, what material would work
just to get one better-constructed.
If you remember the Radio Shack Minimus, The box is about that size and used at close range in this computer room. I'm shrinking down all my audio for use in a smaller space. No bass needed. The FE127e EN (homemade) sounds fine.
I thought of layering something like hard board which I have or half inch ply.
My tools are limited and I have no actual shop area. I've learned to use a saw board.
Should have said _Thin_ - walled in the subject. Thanks for answering.
I didn't see my email show a response so am slow in thanking. I thought my mail address was updated in my account since login still went ok.
No foam core for me. I'd find it hard to work with.
Is this, then, what's called the "leaky box"? I still like the old one. For late night viewing of media in a near field situation like a desktop it may last long enough.
I'm also struggling a little to understand what you are after. If you want to use something you have to hand, then the ply would be best. Also, how thin? There is thin MDF which may suit.
I was wondering if there was some construction technique I overlooked.
Just today I went through the closet looking at cardboard boxes. I may try that. Those may vibrate a bit too much.
As to the hardboard, I have a bit of that but MDF is very powdery. Thin walls like the original perhaps with braces at all the corners. There has to be something to hold it together
The effect is pretty much like a table radio. Uncomplicated, very flat sound. I may be whistling in the dark on it and just use up what I have.
The email has kicked in now with no change from my profile. I might have missed one/deleted by mistake.
Just today I went through the closet looking at cardboard boxes. I may try that. Those may vibrate a bit too much.
As to the hardboard, I have a bit of that but MDF is very powdery. Thin walls like the original perhaps with braces at all the corners. There has to be something to hold it together
The effect is pretty much like a table radio. Uncomplicated, very flat sound. I may be whistling in the dark on it and just use up what I have.
The email has kicked in now with no change from my profile. I might have missed one/deleted by mistake.
What material did you build this out of?
Comparing an open back box to a “closed” one will show major differences.
The mFonken is about the smallest FE127 box i’d recommend. eMail me, i can send you the (unfinished) FE127e planset that was going to be the 2st of the paid planets, but got scuttled when the driver was discontinued.
Can you post pictures of your EnABL job for curiousity sake?
dave
Unfortunately I have never taken up any sort of photographic equipment- no wireless phone either. I had bought Ed Fontaine's kit and made the EnAble attempt on one of my two FE127e's. I got the spots on, I got the lacquer and the ModPodge on but something else I screwed up. It looks and sounds ok but I never came close to the apparent perfection you get consistently. I did one other one: an 8 in. to give me a better view of what I was doing. This too is still in one of my setups.
But like GM points out: over the years, aging hearing goes and much less detail is needed or even wanted. Example: I have a terrible time with car noise-- not just boom cars but loud engines, muffler jobs and the rest.
I should day a thank you here to Dave and Ed and the work that Terry Cain did and the DIY Audio community was a regular site for me for many years. Since then I have moved to learning some video editing and those techniques of audio and video.
Do you mean mail to you at a contact address on Planet 10? I recall admiring the Onken designs. Can't recall the one you mention.
Again the setup here for near field application is different than things I've done in the past. I put together a Harvey, some BIBs and other projects in the old days. Even one with plumbing pipe.
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One thing I failed to answer in your question: this "container" I'm using came from a mini music system which was a gift-- one of those shelf setups. It appears to be 1/4 in. pressed board with some of the usual black plastic paper over for presentation. The FE127 happened to fit in the molded plastic front shell when mounted behind it. This gives a slight wave guide effect. The shell also had a tweeter in it. But at the low levels I listen to and up close all that is mostly irrelevant.
How did such a thing some to pass? Well the shelf system was shot electronically and
I gave that to a fixer upper guy. It was an expensive rig but you can tell from the description that the speakers were all for show. I bought my first two hobby speakers at Madisound, had no tools and GM got me going on this initial install -- which I am now back on, full circle.
;-)
How did such a thing some to pass? Well the shelf system was shot electronically and
I gave that to a fixer upper guy. It was an expensive rig but you can tell from the description that the speakers were all for show. I bought my first two hobby speakers at Madisound, had no tools and GM got me going on this initial install -- which I am now back on, full circle.
;-)
Practise. Early examples were kinda sad. I have done thousands of units so far.
Yes.
dave
You're welcome!
Happened to me and assume everyone that posted right before they shut down to move the servers the other day.
Not leaky, just low Q, i.e. resonates at a low frequency whereas the more rigid cab resonates much higher and judging by how far off the specs are for the 127E [high Qts], not surprised it sounds better in a limp box to 'absorb the driver's 'looseness' Vs a stiff one that makes the driver have 'loose lips', so to speak unless relatively large, tuned lower than Fs or ~aperiodic like Dave suggested: Fostex FE127E Fullrange Loudspeaker Driver
GM
I’ll defend the factory number. When i measured them with Fuzzmeasure they seemed high but when i sent a pair to Mark Fenlon he came up with numbers much closer to factory numbers when he used his factory software. T/S are curves, what part of the curve are you picking the number off.
dave
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