Having trouble calculating what amps are needed for dr250

Is this amp OK?
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5meohd
Posts: 126
Joined: Thu Nov 18, 2010 4:47 pm

Re: Having trouble calculating what amps are needed for dr25

#16 Post by 5meohd »

cool. I am doing 4 dr250's stacked in two vertical arrays for mains. 2 dr250's for the DJ booth. 4 tuba 60's for subs.

I then plan to add 4 more T60's.

then 4 more dr 250's, 2 for rear time delayed room fills, 2 for the original stacks.

thanks for your help everyone!
4 T60's
2 Danley Sound Labs SH69

Ashley Protea
QSC PLX2
Crown CDi

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Zack Brock
Posts: 1124
Joined: Sun Oct 07, 2007 1:06 am
Location: Northeast Florida
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Re: Having trouble calculating what amps are needed for dr25

#17 Post by Zack Brock »

5meohd wrote:cool. I am doing 4 dr250's stacked in two vertical arrays for mains. 2 dr250's for the DJ booth. 4 tuba 60's for subs.

I then plan to add 4 more T60's.

then 4 more dr 250's, 2 for rear time delayed room fills, 2 for the original stacks.

thanks for your help everyone!
:clap: That will be one potent setup!
Zack Brock
Authorized Builder, Northeast Florida (Greater Jacksonville Area)
WavePulse Acoustics | zackbrock@macpulse.com | http://www.bestbasscabs.com/

djtrumptight
Posts: 823
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

Re: Having trouble calculating what amps are needed for dr25

#18 Post by djtrumptight »

I initially bought a Crown XLS 1000 to power 4 DR250's but after consulting with the forum i took it back unopened and got the XLS 1500 and i'm glad i did,i think the xls 1000 would have left something to be desired.With the 1500 if i run into a clipping issue i have enough headroom from the amp that i can turn my signal source down at the mixer,adjust my limiter and turn my amp up.DR250's actually have a voltage limit of 44.7 but we are encouraged to limit them to 40 v.I go a step further and limit mine at 38 volts when i use 4 of them.If i need more than that i need to pass on that gig and spend that time building some more cabs.
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

5meohd
Posts: 126
Joined: Thu Nov 18, 2010 4:47 pm

Re: Having trouble calculating what amps are needed for dr25

#19 Post by 5meohd »

1 amp to power 4 dr250's ??


spec on the speaker you use:

Power Handling (RMS) 250 Watts
Power Handling (max) 500 Watts
Impedance 8 ohms

spec on the amp you use:

Watts/Side @ 8 ohms 300W


so 150W per speaker? hmmm.. not sure if I understand.
4 T60's
2 Danley Sound Labs SH69

Ashley Protea
QSC PLX2
Crown CDi

User avatar
Bas Gooiker
Posts: 752
Joined: Fri Jul 06, 2012 5:05 pm

Re: Having trouble calculating what amps are needed for dr25

#20 Post by Bas Gooiker »

5meohd wrote:1 amp to power 4 dr250's ??


spec on the speaker you use:

Power Handling (RMS) 250 Watts
Power Handling (max) 500 Watts
Impedance 8 ohms

spec on the amp you use:

Watts/Side @ 8 ohms 300W


so 150W per speaker? hmmm.. not sure if I understand.
300w @ 8 ohms, so your amp will probably be ~ 500w @ the 4 ohm load that 2 parallel Dr's will present to the amp. So looks to be spot on.
Life is just a game, don't take it to seriously!

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