2 DR280's vs 3 DR250's

For unmatched sensitivity.
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tribal king
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Joined: Tue Jun 21, 2022 10:03 pm
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2 DR280's vs 3 DR250's

#1 Post by tribal king »

Good day folks,
Now I'm not sure if the topic has already been discussed elsewhere on the forum but I was wondering if (3) DR250 stacked would have similar or greater output to (2) stacked DR280s? Reason being, I currently use a pair of DR280's {stacked vertically} but they are quite hefty to mount atop my {pair} T48's cause I sometimes have no choice but to work solo, I built 1 DR250 which I never used since completion and was thinking about building a couple more for use in scenarios where I don't have any assistance to set up the system.. Oh and my audience head count is close to that of the ratings of a pair of DR280's.

Thanks in advance.

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Seth
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Re: 2 DR280's vs 3 DR250's

#2 Post by Seth »

Looking at the charts, sensitivity wise, three DR250's has a slight advantage. It's difficult to say which stack would produce audible distortion at a higher output level than the other. Looks promising, though.

Sensitivity adjusted for cab count.



Note: These are both based on the non-ported version
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421

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Bill Fitzmaurice
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Re: 2 DR280's vs 3 DR250's

#3 Post by Bill Fitzmaurice »

I'd say they'd be pretty similar in the lows, with the high frequency advantage going to the three DR250.

Keryn O'Shea
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Re: 2 DR280's vs 3 DR250's

#4 Post by Keryn O'Shea »

tribal king wrote: Fri Mar 06, 2026 3:32 pm I currently use a pair of DR280's {stacked vertically} but they are quite hefty to mount atop my {pair} T48's cause I sometimes have no choice but to work solo..
I hear you man, are you using the ground stack/coupling brackets in the plans?
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FA, J12 FA, OT8 CD, OT12 FA, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 MA, XF210. Next J10L

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