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CVR VS ADMARK VS OTHER
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FALCETTA View Drop Down
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Points: 34 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FALCETTA Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2024 at 10:02am
Originally posted by Elliot Thompson Elliot Thompson wrote:


Originally posted by FALCETTA FALCETTA wrote:




Indeed the datasheets show 11k at 4 ohms, the Admark salesman told me it is 11k at 2 ohms.
There is something obscure, theoretically AD60 is AD442 with 2 bridged channels, but looking at the specification of AD442 it would seem to be understood that it is the only version that has only 1 channel in bridge and not 2 (as with all the other 4-channel versions channels ) and I don't understand why.



It could be the AD 430 Bridged in the AD 60 chassis. 


Originally posted by FALCETTA FALCETTA wrote:

 48.5 / 53.7 ampere  continuously ??? 
they become completely unmanageable with such a current, but there is also the fact that they will never be used at maximum RMS power.
I should use 2 AD60 to drive 2 double 18s which require a lot of power, do I need a 100 amp line just for subs??

You answered your question. How hard are you planning to drive the amplifier?

If you are using them to achieve a lot of headroom, you won't consume 100 amperes. 

If you are driving them to maximum, you will require a 100 ampere line source.

The AD 60 is a powerful amplifier and, you are looking top buy two. 

Best Regards,




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my Error sorry.

I should amplify 8 x 3-way tops and 4 x 18" double subs
I attach technical specifications.

TOP: 3 way line array enclosure
Nominal Power: 1300W
Continuos power: 2600W
Peak Power: 5200 watt
Sensitivity: 102dB @ 1W1m
Impedence: 8 OHM
L.F. DRIVER: 2×10” nd driver (3") V.C
M.F. 1×8″ nd driver  (2,5") V.C
H.F 2×1,4” nd driver (3")V.C
Reccomended amplifier: 2500w RMS 4 OHM

Sub: horn and bandpass loaded subwoofer
Nominal power: 3600W
Continuos power: 7200W
Peak Power: 14400 watt
Sensitivity: 99dB @ 1W1m
Impedence: 4 OHM
L.F. driver: 2×18” ND woofer – 4,5” V.C
Reccomended amplifier: 5000W RMS 4 OHM
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Points: 3443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2024 at 10:03pm
Originally posted by Elliot Thompson Elliot Thompson wrote:


It could be the AD 430 Bridged in the AD 60 chassis. 



Seems likely. Maybe we can expect an AD84 to come out soon...
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FALCETTA View Drop Down
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Points: 34 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FALCETTA Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2024 at 4:23pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by MarjanM MarjanM wrote:

Originally posted by Elliot Thompson Elliot Thompson wrote:


Elliot, that power should be at 8 ohms, not 4 ohms. I really considered getting one AD60 just to satisfy my curiosity, but if we are being honest, where would you use an amp that can do 6KW at 8 ohms? Sure, headroom is always nice, but still...

That is what had me perplexed as well! Since I am going by what the author measured, I cannot say if the author had some means of limitation based upon a low current source or, Admark's Marketing team is coming into play (escalating the wattage). Since Admark rated the AD 60 11,000 watts per channel @ 4 ohms Stereo mode, the RMS should hover around 7700 watts (Crest Factor 11,000 watts). Based on the measured 6440.06 watts RMS rating @ 4 ohms, the Crest Factor is 9106.25 watts. 


The only solution is to buy one and conduct the same test as I did the Morin K 30. The harsh reality is I don't need it. This is why I haven't bought one.


Best Regards,



Hi Elliot Thompson, I asked for a quote from both CVR and ADMARK I would be oriented more towards ADMARK-60 due to the higher power (so as to have more headroom) I was considering whether to take the DSP version or the version without DSP because I read on the web that they do not recommend the DSP version, I would need the DSP for the RMS and PEAK limiter function, very important, given that the output voltage can be directly limited, with the version without DSP I would have to use the mixer's limiter functions, but mine question is:
How can I calculate knowing the RMS power that the amplifier delivers and knowing the power that the subwoofer needs at how many DBFS to set the limiter on the mixer?
Thank you very much for helping
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Elliot Thompson View Drop Down
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Points: 5365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2024 at 5:57pm
Originally posted by FALCETTA FALCETTA wrote:

Hi Elliot Thompson, I asked for a quote from both CVR and ADMARK I would be oriented more towards ADMARK-60 due to the higher power (so as to have more headroom) I was considering whether to take the DSP version or the version without DSP because I read on the web that they do not recommend the DSP version, I would need the DSP for the RMS and PEAK limiter function, very important, given that the output voltage can be directly limited, with the version without DSP I would have to use the mixer's limiter functions, but mine question is:
How can I calculate knowing the RMS power that the amplifier delivers and knowing the power that the subwoofer needs at how many DBFS to set the limiter on the mixer?
Thank you very much for helping


You need to buy an external DSP as the AD 60 offers no DSP. 

You would need to contact the Loudspeaker Manufacturer for they are the ones that recommended 5000 watts. Bring it to their attention what amplifier you are looking to buy and, they should give the proper safety precaution methods in terms of settings using an external DSP


The amplifier should (as the majority of that series does) have dip switches in the back to prevent the amplifier from clipping (The Clip Lights are Yellow). That would be based upon short duration peaks not, continuous average.


Since excessive continuous average power is the root of heating up the voice coil under long term conditions, the loudspeaker manufacturer will know how much volts is too much within a certain time period, for their loudspeaker at the given frequencies.


Those that overpower their loudspeakers generally, use their own judgment on when it is time to back off. They also have a lot experience using a wide variety of amplifiers throughout the decades.


Limiters are not perfect. So, you need to use your own judgment when you are asking too much from a small stack of speakers when the surroundings require more boxes. There are many that still destroy speakers despite having the limiters set correctly.


On that note...


Do not try to have all settings prepared in advance before you actually purchased the products! You have Ears! They are the best means of monitoring what is taking place.


You will need to tweak and adjust until you get it right.




Best Regards,




Elliot Thompson
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Points: 5365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2024 at 6:07pm
Originally posted by snowflake snowflake wrote:

Originally posted by Elliot Thompson Elliot Thompson wrote:


It could be the AD 430 Bridged in the AD 60 chassis. 



Seems likely. Maybe we can expect an AD84 to come out soon...


That would be around 610 volts Peak to Peak per channel to achieve twice the amount of the 4 ohm RMS rating of the AD42

Best Regards, 


Edited by Elliot Thompson - 16 January 2024 at 6:08pm
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Good morning, is there anyone who could advise me which amplifier to buy to run my new line array system? but avoiding Chinese amplifiers, and avoiding powersoft which really costs too much..
the manufacturer states that the heads need 2500 WATT RMS 8-ohm and I have 4 per side.
the subs need 5000 WATT RMS 4-OHM and I have 4. thank you very much
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What system do you have? Those power specs sound absurd. RMS for speakers is a moot subject and actually difficult to define. Most drivers will actually work happily with a lot less watts than the manufacturers like to quote. It's a bit of a silly game, really.   Dead

And anyway, if you want anything that powerful, "non-Chinese", it's going to cost a lot. Look at MC2, QSC or FFA, all expensive. There is no easy answer here.





Edited by Earplug - 22 January 2024 at 10:07am
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Originally posted by FALCETTA FALCETTA wrote:

[QUOTE=Elliot Thompson]
I should amplify 8 x 3-way tops and 4 x 18" double subs
I attach technical specifications.

TOP: 3 way line array enclosure
Nominal Power: 1300W
Continuos power: 2600W
Peak Power: 5200 watt
Sensitivity: 102dB @ 1W1m
Impedence: 8 OHM
L.F. DRIVER: 2×10” nd driver (3") V.C
M.F. 1×8″ nd driver  (2,5") V.C
H.F 2×1,4” nd driver (3")V.C
Reccomended amplifier: 2500w RMS 4 OHM

Sub: horn and bandpass loaded subwoofer
Nominal power: 3600W
Continuos power: 7200W
Peak Power: 14400 watt
Sensitivity: 99dB @ 1W1m
Impedence: 4 OHM
L.F. driver: 2×18” ND woofer – 4,5” V.C
Reccomended amplifier: 5000W RMS 4 OHM
 


Ok, just seen this.

As I suspected, totally BS specs. Take your "Nominal Power", divide by 2 and you get a figure for the amp you need.   LOL LOL LOL
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Here are the specs

TOP: 3 way line array enclosure
Nominal Power: 1300W
Continuos power: 2600W
Peak Power: 5200 watt
Sensitivity: 102dB @ 1W1m
Impedence: 8 OHM
L.F. DRIVER: 2×10” nd driver (3") V.C
M.F. 1×8″ nd driver  (2,5") V.C
H.F 2×1,4” nd driver (3")V.C
Reccomended amplifier: 2500w RMS 4 OHM

Sub: horn and bandpass loaded subwoofer
Nominal power: 3600W
Continuos power: 7200W
Peak Power: 14400 watt
Sensitivity: 99dB @ 1W1m
Impedence: 4 OHM
L.F. driver: 2×18” ND woofer – 4,5” V.C
Reccomended amplifier: 5000W RMS 4 OHM

Line array system by MAD AUDIO, an Italian company.
the speakers are all from B&C
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Points: 34 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FALCETTA Quote  Post ReplyReply Direct Link To This Post Posted: 22 January 2024 at 10:12am
Originally posted by Earplug Earplug wrote:

Originally posted by FALCETTA FALCETTA wrote:

[QUOTE=Elliot Thompson]
I should amplify 8 x 3-way tops and 4 x 18" double subs
I attach technical specifications.

TOP: 3 way line array enclosure
Nominal Power: 1300W
Continuos power: 2600W
Peak Power: 5200 watt
Sensitivity: 102dB @ 1W1m
Impedence: 8 OHM
L.F. DRIVER: 2×10” nd driver (3") V.C
M.F. 1×8″ nd driver  (2,5") V.C
H.F 2×1,4” nd driver (3")V.C
Reccomended amplifier: 2500w RMS 4 OHM

Sub: horn and bandpass loaded subwoofer
Nominal power: 3600W
Continuos power: 7200W
Peak Power: 14400 watt
Sensitivity: 99dB @ 1W1m
Impedence: 4 OHM
L.F. driver: 2×18” ND woofer – 4,5” V.C
Reccomended amplifier: 5000W RMS 4 OHM
 


Ok, just seen this.

As I suspected, totally BS specs. Take your "Nominal Power", divide by 2 and you get a figure for the amp you need.   LOL LOL LOL





The nominal power doesn't seem wrong to me, the tops are 3-way with double 10" which produce at least 400watt rms per cone (800 2 cones)
the medium will do another 300 watts rms
and the 2 drivers another 100 watts per cone (200) total is 1300
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MarjanM View Drop Down
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It would help if you provide a link to the spec.
Not one serious manufacturer specify the power as RMS.
Marjan Milosevic
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https://www.facebook.com/pages/MM-Acoustics/608901282527713
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Originally posted by MarjanM MarjanM wrote:

It would help if you provide a link to the spec.
Not one serious manufacturer specify the power as RMS.
 
this is the link, but the specs are what I wrote
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