Omni 15 Tallboy

[Silent Horsebreath]

Just finished this and paired it with a Gallien Krueger 700RB. It took me a while to get used to as this beast is unforgiving in respect to sloppy playing and fretnoise but I find that not a negative thing. It can make me a better player because of that. This thing has punch! Whith other cabinets i always found that the overall tone sounded 'forced' as in: you'd either have lots of smooth bass but no clarity or the other way around but not both, and punch (which I now know the real meaning of) was hard to find. This one can do both and it takes some getting used to. I'm actually dialing away treble and high mid's instead of adding it. And this is with using a flatwound P! That has never happened.

The build itself did pose some problems, as I did not have access to a circular saw most of the time. I can cut fairly straight so i managed (and thank god for PU glue!). Finishing it with carpet was hell as i had to do some places twice and thus came short and had to reorder. But all in all it was a good experience.

This is my experience after the initial 2 day test run at band rehearsal. Tonight i have a gig without pa support so I'll see what it can to there. I did already notice i may have wired up the tweeter the wrong way as it starts hissing when i go below low A... I can't fix it before the gig so I dialed away treble to avoid potentially blowing it up.

I don't have pictures yet, not that anyone would want to see it because it's not that beautiful (unless you like glue stained carpet with jagged edges etc) but it kinda has a vintage look about it, which i like. But it's my first time carpeting so I didn't expect any better.

All in all, it turned out great. Only improvement soundwise would be that tweeter but I'm sure thats an easy fix.

[Zack Brock]

I don't have pictures yet, not that anyone would want to see it because it's not that beautiful (unless you like glue stained carpet with jagged edges etc) but it kinda has a vintage look about it, which i like. But it's my first time carpeting so I didn't expect any better.

Awww, c'mon, it can't be that bad. Show us some pics!

Regarding that tweeter, you say it hisses ONLY below A? To restate, no unusual noise above A?

[Silent Horsebreath]

Yup, it's pretty strange. It might not be the cabinet at all, it could be the amp or the bass so i'd have to test that first, although it's very unlikely a P with flats would have that problem. The amp is new too so I didn't have the chance to test it with a different cabinet.

The gig went awesome by the way. The best sound I ever had live, I could finally use a substantial amount of bass without it getting muddy. Some reactions from people in the audience (musicians) say it was very well defined and good sounding =] (it was a no PA thing, eccept vocals).

So, it withstood the bar without PA test and I couldn't be happier (well after sorting out that tweeter ofcourse).

[Silent Horsebreath]

Awww, c'mon, it can't be that bad. Show us some pics!

I'll photograph it in a dark room with low light when I have the chance

[SeisTres]

Awww, c'mon, it can't be that bad. Show us some pics!

I'll photograph it in a dark room with low light when I have the chance

Let me know so I can take my whole BFM family to the session

Who would have thought that Duratex would look better than opaque deck paint

[wounded horse]

I hope mine turns out as well as yours. I'm about 2/3 of the way. The only thing i would do different would be to make the mid horn flare/throat 5/6mm longer and not mess around cutting those angles on the outer and inner edges, offer it in, plenty of PL and then take it down flush withe belt and orbital sanders. Same on the inner end of the throat - I'd just belt sander it flat to take the mid horn baffle.
Mines getting duratex and afolded mesh front.....see here

http://www.speakergrills.co.uk/

not the world's greates website but if I give him the exact aperture height and width, he'll fold the edges in. Which brings me to the next point....
When I put the shell together I didn't forsee how I was going to finish it all off and now I want the mesh grill I have no rebate. So I'm going to get 4 strips 12mm cut on a table saw and screw and PL them on after I get the grille so I have adjustability. Sanded and duratexed, only I will ever know.

Waiting for 2 3012LF and an 8MRA now.

[Bill Fitzmaurice]

I hope mine turns out as well as yours. I'm about 2/3 of the way. The only thing i would do different would be to make the mid horn flare/throat 5/6mm longer and not mess around cutting those angles on the outer and inner edges, offer it in, plenty of PL and then take it down flush withe belt and orbital sanders. Same on the inner end of the throat - I'd just belt sander it flat to take the mid horn baffle.
.

Those are options if you happen to own a belt or random orbit sander, but most builders don't. The plans are configured so that those with minimal tool collections can build them. If you've got more than the average number of toys in your shop by all means put them to good use.

[wounded horse]

Take your point Bill. I got both on ebay for £25 so had to have them because I know I'm going to have to have a Jack 1 X 12 next. Due to work and family commitments and a cold garage I've taken my time and nursed this baby. I want to finish it but almost don't want to.

[Tom Smit]

I want to finish it but almost don't want to.

Too much fun?

[Israel]

Im thinking bout making a tallboy for bass (latin music does have a big big butt) how does it sounds on the low end ????

[Silent Horsebreath]

Im thinking bout making a tallboy for bass (latin music does have a big big butt) how does it sounds on the low end ????

Pretty damn good, it's definately different than what you're probably used to, because it's a more clean and deep kind of low in comparison with most standard bass cabs. Other cabs would get muddy with too much bass dialed in, at least in my experience. This one does not, and because of that dedicated mid driver also keeps definition. Also, you might want to build it without the comp tweeter, I use flatwounds but sometimes I need to dial away treble from my amp because it's so loud.

[Scott Brochu]

Im thinking bout making a tallboy for bass (latin music does have a big big butt) how does it sounds on the low end ????

Pretty damn good, it's definately different than what you're probably used to, because it's a more clean and deep kind of low in comparison with most standard bass cabs. Other cabs would get muddy with too much bass dialed in, at least in my experience. This one does not, and because of that dedicated mid driver also keeps definition. Also, you might want to build it without the comp tweeter, I use flatwounds but sometimes I need to dial away treble from my amp because it's so loud.

I used an LPad that was mentioned in the plans in turning down the horn to your likings.

[wounded horse]

I'm eyeing these posts with great interest as I'm probablw a couple of weeks at current progress to finishing my Omni 2 X 12. I have used an Aguilar 2X12 for the past 3 years and I'm constantly fighting boom and mud and thats with the 30 and 40hz killed right off on my Trace head. Not many amps have EQ control that low. I fint it depends on what song we're doing. A slow ballady song with low note count, it sounds OK ish but say on a tune with 1/8 notes and a bit more band input from guitars, it goes horrible. Do any of you guys have that weird situation where you tune up on a quartz or multi effects inbuilt tuner and then you play, say a low G and its fifth above and it doesn't sound like a fifth but that the D sounds like C#. So you check the tuning again and sure enough its in? Weird that. Am I alone on that? I want this BFM cab to sound HiFi and true as I'm tired of cabs that are all marketing and no substance.

[Bill Fitzmaurice]

I have used an Aguilar 2X12 for the past 3 years and I'm constantly fighting boom and mud and thats with the 30 and 40hz killed right off on my Trace head. .

Boom and mud doesn't come from 30-40 Hz, it comes from 80-160 Hz, and is usually the result of a cab that's too small. Most amps don't have an EQ section that has a narrow enough bandwidth to notch out the boom without killing the low end; a fully parametric works best.

[wounded horse]

Interesting as I'm currently looking at parametric preamps. I find that as I try to home in on frequency bands and try to dial out what I can only call resonant harshness, I lose headroom. Anyone use parametric eq? Any recommendations where I should be looking?