Purchased eBay OB speakers - Are they junk?

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That's a joke. He is a "net" artist and his "impressions" tend to sell overpriced for good bucks!
One of the best outcomes I've ever had by really modding out hardware. Solid core internals - you can argue all you want about stranded, I like what I like. Again, and as usual, I used reclaimed kiln poplar with a slightly rough finish. On of the best things I've ever put out there.
matthespider
He really saves on sand paper. I get the same materials he uses here on the ocean beach every year. You can see some of his other creations. Really funny but e-pay reap-off. They are not made to sound good, you will be lucky if they "SOUND" like anything in the market... They are just a proof of concept probably with no concept at all besides simplistic RECYCLING and "value added". Damn! they might be heavy... A Work-of-Art indeed. :joker:
  • Handmade Custom Speakers - Excellent Audio Quality, Real Wood, Triangular Box
  • Handmade Audiophile Speakers - Reclaimed Wood, Custom Drivers, FULLY NEO

The art of selling - YouTube
 
I see some pillows in the photo
Though the synthetic is not as good as natural wool fibers for absorbing the sound, try to put some acoustic damping in the back of the speaker.
If not satisfied, put lateral baffles to make it closed, make some holes and try 2 or 3 chamber reflex. Experiment. A triangular enclosure at the back of the driver is not a bad idea.

These photos were pulled from the listing. And I really don't have much time to experiment. I'd like to do the very least to make them sound decent. If sealing up the enclosure would help then I can do that. What size holes?

lol what a creation 😛

At least those Tang Bands are very good, they have one of the best Vocal reproduction 🙂

Vocal reproduction is one of the main reasons I was looking at full-rangers, so thats good.

Yes, the driver itself is one of the "good" ones....I had a discussion here about this particular driver... I tend to think it's an excellent buy..
As for the enclosure..?? The first picture of it I saw...I'm thinking to myself "Ah ha a back-loaded horn, he's showing us what it looked like inside as he built it" Scrolling down the pictures.."What?" I think he may have been trying to confuse prospective buyers...those who have seen briefly the INSIDES of back-loaded horns.
He MAY have been trying to build such a horn, got frustrated, just oiled it up & wanted to just sell it off. Then again, the angles of this thing don't make sense....for a back-loaded horn.
Look up back-loaded horns to see what I'm talking about, OK?


________________________________________________________Rick.......

I'd been considering picking up a full-range horn kit from Madisound. Now I really wish I had.

Baffle is junk.

I was hoping it only looked like junk.

My knee jerk reaction would be epay equals rip-off.

But, Tang Band makes, for the most part, good drivers. However, that is a $50 driver and you paid $200 for it and $10 worth of wood. I doubt it sucks, but I think you paid too much.

I've heard it today, and it sucks, so I am a sucker.

OK so you've paid too much. Just wait and see what they sound like before you plan a rebuild.

15min of listening = rebuild. I'll take measurements before salvage though. The seller said they could play to 80Hz ("arguably lower"). If so, then I've never realized before how much good stuff is between 55-80Hz.

Gotta love E-prey! The good news is the drivers are nice...hope they both work and measure the same....but the design of the OB is truly one of the funniest things I've ever seen...sorry...don't mean to laugh at your expense, but you have to hand it to the vendor for his sheer unmitigated gall!

Gotta love his quote" “One of the best-sounding speakers I've ever made. Eerie. That point-source stuff is pretty ” “One of the best-sounding speakers I've ever made. Eerie. That point-source stuff is pretty ”

That's what sold me!

Make holes in braces and add side panels to make closed or BR box. There is no sonic advantage in OB, only waste of efficiency.

I may try both and see which I prefer. Currently, I'm a fan of my Magnepans, but a closed or bass reflex box may be a nice compliment.

Hi,

Its an appallingly bad "design" by a clueless muppet,
who doesn't mind lying through his teeth about the
alleged sound quality, which really will be next to nil.


The "design" is just pointlessly pseudo complicated garbage.

"Audio artwork" my butt, and at $200 a complete ripoff.

I'd would seriously complain via Paypal of misrepresentation
and not fit for purpose. There is nothing "awesome" about
poorly stained lumps of wood crudely screwed together.

rgds, sreten.

Mind if I use that in my feedback?

I know a person's opinion of sound quality is relative, but this guy should know better. However, I can't leave negative feedback. I can say his product is **** IMO, but I can't say for sure he is a liar, though I'm certainly pretty sure.

Hi,

Your simply wrong, not much is worse than the current arrangement.

rgds, sreten.

Who would build this then? I know who would buy it... 😱😡

Frankly the only thing worse is to have no enclosure whatsoever...Oh that's right, like those...........uh oh............but I digress.
This driver models great........buy yourself some one inch thick MDF at the local store, draw out a box, Seventeen and a quarter inches high, Fourteen inches deep, Eleven and half inches wide..........cut a hole out of the 17.25 X 11.5 panel, using the "sample" enclosure to trace out the size.
At the same hardware store get a foot & a half of 2 inch PVC pipe & wood glue & 2" screws...........................use the so-called "enclosure" you got & build a Birdhouse with it. Let me know precisely what the inner diameter of you PVC pipe is & I'll give you a length to cut it.
________29L, Fb 48 Hz., F3 appx. 42.62 Hz @ -3.3 Db.------

______________________________________________________Rick.......

Thank you so much sir!

If you are implying that slapping sides on this will improve it, that's a stab in the dark at best and a waste of his time and materials, at worst. Yes, the current arrangement is dreadful, but upgrading the current design to something almost equally hodge-podge isn't the way to go here.

Yes. I don't want to waste time experimenting. Exact plans like Rick gave is what I would want to start and finish with.

well, while not my personal favorite, the drivers aren't junk, but a Grade 8 woodshop student would get a failing grade on the joinery on these

WTF is the purpose of the short piece dangling from the rear of the top member?

I'll direct the eBay seller to this thread. Maybe he'll chime in. On his behalf, I can atleast say that he paid $35 shipping, so his return wasn't a complete raping of my wallet.
 
I forgot to mention that I found he left a review for the Tang Bands on PE. Notice his technical knowledge as "professional.":

10504707034_6a86159e11.jpg
 
I forgot to mention that I found he left a review for the Tang Bands on PE. Notice his technical knowledge as "professional.":

10504707034_6a86159e11.jpg
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Don't despair Philimon....the audio world is full of hucksters...though many here might not admit it, most of us at one point or another have fallen for some type of hype or psycho-acoustic babble.😱

You could simply sell the drivers and recoup part of your expense. Then read some of the full-range projects here at DiyAudio...there are also a few people who design, build and sell finished FR loudspeakers here.

Or you can try and salvage what you have and build an enclosure as Richard Ellis suggested.

You got off relatively cheap on the learning curve IMO and I doubt you'll ever fall prey to a huckster like this again😉
 
I'll take measurements before salvage though.
The seller said they could play to 80Hz ("arguably lower").
If so, then I've never realized before how much good stuff is between 55-80Hz.

Hi,

He is lying through his teeth. They will get nowhere near 80Hz.
I'd guesstimate they are about -20dB down at 80Hz and will
produce non-existent levels of bass before overloading at
xmax - due to the very serious amount of baffle loss.

Best speakers he's ever made ? Utter BS.

The bass will roll-off at 6dB/octave below 500Hz. They have
utterly no bass, no upper bass, and very poor midrange.

Everything below ~ 500Hz is an unmitigated disaster area.

rgds, sreten.

Mind if I use that in my feedback?
Be my guest.
 
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Do you have a cat? if so you could nail some old bits of carpet to them, maybe even hang some soft toys off them. 😉

Best idea yet. My cat would love them.

Carpentry is not my strong suit, but my skills are way way better than that. I have a table saw, router with jigs and table, jigsaw, etc and I also know how to cut a piece of board square and straight. In fact, I could do better than that when I was 12 years old.

Those "enclosures" are truly disgraceful.
 
Hi Philimon

Ok, I'm going to go totally against the stream (as usual), and suggest that you do not immediately junk the boxes (or baffles, or whatever those things are). Try listening to them first and see what you think. Yes I agree, the baffles look weird, but I have to say, one of the first things that struck me was that the cavity behind the driver has no parallel sides. That is a plus (however small it may be). So here is my suggestion- first things first, put some carpet felt or wool on the diagonal baffle behind the driver and the top baffle (on the inside). This will cut down on cavity resonances and will improve things to start with.

Once that is done, we can move to constructing side baffles. I agree with the idea of putting on side baffles, but make them from something absorptive (like carpet felt or something like that). If you use carpet felt, cover it in speaker cloth first. Or add solid wood side-baffles, but leave a triangular opening on each of them so that the woofer chamber remains open baffle. You can put a metal grill over these openings and then put the damping material against the grill from the inside of the box. You can then experiment with different thicknesses of damping material (or even put damping material on the one side and not the other, etc, etc.).

If it was me, I'd experiment, play around with it. You've spent the money so there is not point crying about it now. So rather than fret about it, have some fun. If you do end up chucking the boxes away, you would at least have had some fun with them and learned something in the process too. Just a thought.

Enjoy,
Deon
 
Those are great drivers. Those are crap baffles. A friend of mine bought white van speakers for $800 and got crap and crap. After helping him build new speakers he felt the overall experience worthwhile. I'd recommend removing the drivers and discarding the baffles. Take your time to figure out what kind of cabinet you want and buy or build it. Those drivers will sound great in sealed, ported or open baffle (if used with a woofer). Even a BIB will be great so you have lots of options. The extra $100 spent is well worth the experience so don't feel bad at all. At least you didn't spend $800! In the end, for just a little more money, you will have something very worthwhile.

Zilla
 
Given that the EBP of these drivers are over 100, they are most suitable for a ported alignment........stuffing them in such a tight sealed enclosure really is a waste & not worth the effort or material.
As I noted earlier a "big" ported will get some real low-end.

Like I said......Birdhouse.

__________________________________________________Rick..........
 

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Hi Philimon

Ok, I'm going to go totally against the stream (as usual), and suggest that you do not immediately junk the boxes (or baffles, or whatever those things are). Try listening to them first and see what you think. Yes I agree, the baffles look weird, but I have to say, one of the first things that struck me was that the cavity behind the driver has no parallel sides. That is a plus (however small it may be). So here is my suggestion- first things first, put some carpet felt or wool on the diagonal baffle behind the driver and the top baffle (on the inside). This will cut down on cavity resonances and will improve things to start with.

Once that is done, we can move to constructing side baffles. I agree with the idea of putting on side baffles, but make them from something absorptive (like carpet felt or something like that). If you use carpet felt, cover it in speaker cloth first. Or add solid wood side-baffles, but leave a triangular opening on each of them so that the woofer chamber remains open baffle. You can put a metal grill over these openings and then put the damping material against the grill from the inside of the box. You can then experiment with different thicknesses of damping material (or even put damping material on the one side and not the other, etc, etc.).

If it was me, I'd experiment, play around with it. You've spent the money so there is not point crying about it now. So rather than fret about it, have some fun. If you do end up chucking the boxes away, you would at least have had some fun with them and learned something in the process too. Just a thought.

Enjoy,
Deon

Hi,

If you really don't know the subject don't comment on it.
Conjectural procedures that are all a bad idea doesn't help.

Whatever you want to call that piece of junk, its junk.
Straight into the dustbin is best for it, and some real design.

rgds, sreten.
 
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