Bfm old fashion design?

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on1sony
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Bfm old fashion design?

#1 Post by on1sony »

http://www.danleysoundlabs.com/products ... bh/dbh218/#
Putting aside weight and price... How do these guys compare?
6xBFM TUBA60 30" WIDE
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Bas Gooiker
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Re: Bfm old fashion design?

#2 Post by Bas Gooiker »

on1sony wrote:http://www.danleysoundlabs.com/products ... bh/dbh218/#
Putting aside weight and price... How do these guys compare?
Looks nice, pretty clever folding style... but compare to which cab, the frequency range does not match any of the cabs here. But if you count packspace 2 slim T60's would be about the same size and also have sub 30hz output.
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Ryan A
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Re: Bfm old fashion design?

#3 Post by Ryan A »

It might outperform a dual loaded T60...but $ for $ and # for # probably not.

Bruce Weldy
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Re: Bfm old fashion design?

#4 Post by Bruce Weldy »

Ryan A wrote:It might outperform a dual loaded T60...but $ for $ and # for # probably not.

It ought to.....it can take 4+ times the power as a dual-loaded T60. But, money, weight, and the amp it would take to run one of these.....

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67baja
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Re: Bfm old fashion design?

#5 Post by 67baja »

Something doesn't add up here:

"continuous output
141 dB SPL

peak output
147 dB SPL

sensitivity
117 dB SPL (2.83 Volts into rated Z, at 1 meter) measured in half space

Power Rating
3600 Watts continious, 7200 Watts program"

117dB at 1 watt, and 141dB at 3600 watts??? That 24dB increase should be had with only 100 watts (and the 147dB at 400 watts, not 7200 watts). Of course we all know we can't believe the manufacturers claims, but come on.
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Ryan A
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Re: Bfm old fashion design?

#6 Post by Ryan A »

67baja wrote:Something doesn't add up here:

117dB at 1 watt, and 141dB at 3600 watts??? That 24dB increase should be had with only 100 watts (and the 147dB at 400 watts, not 7200 watts). Of course we all know we can't believe the manufacturers claims, but come on.
For one, the 117db @ 2.83 volts was probably measured at 2 ohms, so its actually about 4 watts, not 1 watt. That doesn't explain everything though.

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Radian
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Re: Bfm old fashion design?

#7 Post by Radian »

They don't compare because...
on1sony wrote:Putting aside weight and price...
For starters, comparing it to the T60 is all sorts of wrong. :cop:

It's a 33 Hz horn. That's T48 territory...and it'd take a good pile of 'em to plunk down the same output as the DBH.

Each design serves entirely different markets so there is no compare. You're not going to see anyone trying to fly 8 T48's anytime soon. :broke:
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Radian
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Re: Bfm old fashion design?

#8 Post by Radian »

67baja wrote:Something doesn't add up here..... Of course we all know we can't believe the manufacturers claims, but come on.
112 + 35 - a few dB for power compression = 141. Nothing more to it. :|

Danley, unlike most other manufacturers, posts specs that actually err on the conservative side. The reason you see that "peak" crap listed is because you know there's a bunch of horny 20 year-old sound techs that wouldn't let them sleep at night if they didn't say otherwise. :roll:
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Re: Bfm old fashion design?

#9 Post by Bruce Weldy »

Radian wrote: The reason you see that "peak" crap listed is because you know there's a bunch of horny 20 year-old sound techs that wouldn't let them sleep at night if they didn't say otherwise. :roll:
:loler: :loler:

That, and they hope said dufuses (dufi?) will actually try it so they can sell 'em some replacement drivers.

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Bill Fitzmaurice
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Re: Bfm old fashion design?

#10 Post by Bill Fitzmaurice »

Two T60s, dual LAB 12 loaded, versus a DBH 218. Similar size, weight and impedance. Not a very similar price, though.

Image

Like most 18 loaded subs the DBH 218 has too short a horn to go really low. A better comparison would be to a pair of 2x12 T48s, which would at least match it in a similar pack space.

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Bas Gooiker
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Re: Bfm old fashion design?

#11 Post by Bas Gooiker »

Radian wrote:They don't compare because...
on1sony wrote:Putting aside weight and price...
For starters, comparing it to the T60 is all sorts of wrong. :cop:

It's a 33 Hz horn. That's T48 territory...and it'd take a good pile of 'em to plunk down the same output as the DBH.

Each design serves entirely different markets so there is no compare. You're not going to see anyone trying to fly 8 T48's anytime soon. :broke:
The -10db cutoff is 28hz... Which makes it T60 territory. As the lowest frequency with Bills cabs is also atleast 10 db down.
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osse
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Re: Bfm old fashion design?

#12 Post by osse »

Radian wrote:They don't compare because...
on1sony wrote:Putting aside weight and price...
For starters, comparing it to the T60 is all sorts of wrong. :cop:

It's a 33 Hz horn. That's T48 territory...and it'd take a good pile of 'em to plunk down the same output as the DBH.

Each design serves entirely different markets so there is no compare. You're not going to see anyone trying to fly 8 T48's anytime soon. :broke:
33 hz might be in the t48's region, if it weren't supposed to be high-passed @ 40...

The thumper look like an interesting box... if u have the big wallet for it!

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subharmonic
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Re: Bfm old fashion design?

#13 Post by subharmonic »

osse wrote: 33 hz might be in the t48's region, if it weren't supposed to be high-passed @ 40...
Unless you hit the 4 pack stack then they drop to 35, then it is a 2hz difference. Starting to split hairs and write your name in the snow.
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biggerrigger
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Re: Bfm old fashion design?

#14 Post by biggerrigger »

And to top it off it looks like the 117db rating is at 95hz or so. I would rather have the 105db at 25hz from the T60's and the giant pile of cash that's left over to put in the mouth of the T60's to see how far I could shoot it across the room :chainsaw:
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Charles Warwick
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Re: Bfm old fashion design?

#15 Post by Charles Warwick »

Also using a pair of 18” drivers meets rider compliance issues while still yielding vastly better performance over competitive designs.
I see what they did there. It's really sad that a name like Danley has to make designs to meet rider specifications rather than what they may have been optimal.

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