Aguilar 751 into 2x10

MarcoBass70

MarcoBass70

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Nov 3, 2017
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#1
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
 
#4
Assuming Aguilar uses linear pots volume at noon should equal about 200 watts. If that's too much (and it might be) turn it down. If you need more volume get another 210 cab.



Edit: Yeah, I think I've got Linear and Audio around the wrong way.
 
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#6
chris_b said:
Assuming Aguilar uses linear pots volume at noon should equal about 200 watts. If that's too much (and it might be) turn it down. If you need more volume get another 210 cab.
Click to expand...

IMHO that is not a very accurate way to determine output. There are too many variables, input gain, dynamic attack as well as how the pots operate. When using a head that is rated higher than your cab ALWAYS pay attention to how clean and loud the sound coming out of the cab is so as to not overpower your speakers.
 
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#9
Yeah, I think I've got Linear and Audio around the wrong way.

But the nuts and bolts of my post remains the same. . . . a DB751 into 210 will easily work, just don't turn it up high enough to do any damage. If you want to be louder than that get a second 210.
 
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#12
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...
First thought, God help the 210.

Second thought mirrors the "just use some common sense" crowd. If you don't push crazy levels, I think you'll be fine...and my first clue that you'll act responsibly is that you were smart enough to be concerned and to ask.

Just know you have a ton of power on tap and the cab is going to be happier with pounds, not tons. Knob position will tell you pretty much nothing in terms of thinking that half way on the knob represents half the max output wattage. Use your ears and your brain.

You'll get a lot of opinions on this question and the usefulness of my answer is one that depends entirely on you not thinking that more power will get you more volume past the point where that 210 is giving you all you can safely and reasonably expect. Great amp by the way....enjoy!
 
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#13
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...
I use a Hartke 500 watter into one 10 inch speaker and as long as you control your power you will be ok.
Think of it as you would a stereo system the more watts the more head room ( clean output)
You can take a 100 watt amp and kill a 400 watt speaker system.
 
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#14
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...

Marco,

You didn't specify the brand of your 210 cab, but if it's a consumer-grade cab, please don't make the mistake of thinking that the cab can actually handle 350 watts. Most consumer-grade cab manufacturers publish wattage ratings based on what amount of power will melt the voice coils (known as the "thermal" rating). Those manufacturers love to publish those ratings because the number sounds so impressive, especially to unsuspecting buyers. The real limiting factor with bass cabs isn't the thermal rating, but rather the *mechanical* rating (the limit of cone movement). You won't find consumer-grade cab manufacturers publishing those numbers! Goodness no! They want to keep those numbers hush hush! A safe rule of thumb to use is, the mechanical rating for consumer-grade cabs is about half of their thermal rating. So for your 210 cab, that would be around 175 watts.

When I say "consumer-grade", I am referring to those commonly mass-produced cabs of various brands that you find all over the place. Their published wattage ratings are thermal, not mechanical. However, there are a few boutique cab builders that don't play that sneaky game. You can actually trust their published wattage ratings because they are more representative of what their cabs can actually handle. A few examples of those cab builders are Jim Bergantino, Alex Claber (Barefaced cabs), Duke LeJeune (Audiokinesis), and Greenboy (fEarful, fEarless).

Hope that info helps! :thumbsup:
 
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#15
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...

That amp is easily capable ripping the speakers cones apart in both cabs, but that will only happen if you overdue the volume or the bass boosting.

Either setup will be absolutely fine, just be careful with the bass and master volume knobs and you're all set:thumbsup:
 
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#16
chris_b said:
Assuming Aguilar uses linear pots volume at noon should equal about 200 watts. If that's too much (and it might be) turn it down. If you need more volume get another 210 cab.
Click to expand...

They don't...noon on the master of that amp is literally deafening.

Even playing theater and festival stages with loud bands and full stacks I've never gotten that amp up above 10 or 11 o clock at the most.
 
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#17
SactoBass said:
You can actually trust their published wattage ratings because they are more representative of what their cabs can actually handle. A few examples of those cab builders are Jim Bergantino, Alex Claber (Barefaced cabs), Duke LeJeune (Audiokinesis), and Greenboy (fEarful, fEarless).
Click to expand...
I'm very confident that the Mesa Subway cabs can be added to that list as well - they are honestly rated and those ratings (mechanical and thermal) are provided on their website.
 
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#18
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...
You can blow about anything up, 1way to another. Adjust your level wisely. Learn to listen to your ear, and recognize when you are at the threshold of surpassing you equipments capability, speaker, and amp. Hope that helps.
 
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#19
CL400Peavey said:
You can use any amp with any cab for the most part if you use your ears and what is between them.

That said the Db751 can turn those cabs to ash if you over do it. If you keeps the volume sensible and use your ears to listen for the cabs reaching their limits, it will be just fine.
Click to expand...
hs123 said:
I use my DB751 with a MarkBass 102P (8ohm/400 watts). I keep the amp and the bass turned down.
It's an illogical physicall setup, heavy head, light speaker...but it sounds great! I have a TH500 for light/light.
Click to expand...
bertthebassist said:
IMO, IME, you should be fine, although it depends on how accurate your cabinet ratings are. If you are pushing your volume, listen for distortion and pull it back a little.
Depending on the cab you are using, it can sound incredibly awesome. I love the DB751.
What cabinets are you using?
Click to expand...
SactoBass said:
Marco,

You didn't specify the brand of your 210 cab, but if it's a consumer-grade cab, please don't make the mistake of thinking that the cab can actually handle 350 watts. Most consumer-grade cab manufacturers publish wattage ratings based on what amount of power will melt the voice coils (known as the "thermal" rating). Those manufacturers love to publish those ratings because the number sounds so impressive, especially to unsuspecting buyers. The real limiting factor with bass cabs isn't the thermal rating, but rather the *mechanical* rating (the limit of cone movement). You won't find consumer-grade cab manufacturers publishing those numbers! Goodness no! They want to keep those numbers hush hush! A safe rule of thumb to use is, the mechanical rating for consumer-grade cabs is about half of their thermal rating. So for your 210 cab, that would be around 175 watts.

When I say "consumer-grade", I am referring to those commonly mass-produced cabs of various brands that you find all over the place. Their published wattage ratings are thermal, not mechanical. However, there are a few boutique cab builders that don't play that sneaky game. You can actually trust their published wattage ratings because they are more representative of what their cabs can actually handle. A few examples of those cab builders are Jim Bergantino, Alex Claber (Barefaced cabs), Duke LeJeune (Audiokinesis), and Greenboy (fEarful, fEarless).

Hope that info helps! :thumbsup:
Click to expand...
MarcoBass70 said:
Hi everybody.
My question is very simple, can I use a 751Head into a 8ohms 2x10? The head into a 8ohms turns into 400W... the power of the cab 350W... Am I gonna blow it? And yet, if I combine a 400W 1x15... having two 8ohms speakers will turn it into a 4ohms system, so the 751 will operate on its full power 750W... Am I gonna blow one or both of the cabinets? Or the system works?
Thanks and regards.
Click to expand...
 
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