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CVR VS ADMARK VS OTHER
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MarjanM View Drop Down
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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...
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no, in the video it uses resistance at 4 ohm
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MarjanM View Drop Down
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But stated power of AD60 is 6000W at 8 ohm.
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yes, but it's peak power, not RMS.  that measurement was made at 4 Ohms
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Elliot Thompson View Drop Down
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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,




Edited by Elliot Thompson - 15 January 2024 at 3:25am
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Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by MarjanM MarjanM wrote:

[QUOTE=Elliot Thompson]

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,


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.

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Edited by FALCETTA - 15 January 2024 at 8:19am
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Elliot Thompson View Drop Down
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To dive a little deeper into the numbers;


Crest Factor


AD 60


Advertised: 11,000 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 9,1026.25 watts per channel @ 4 ohms


AD 42


Advertised: 7,800 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 8,230.79 watts per channel @ 4 ohms


AD 60 vs AD 42


dB Differential in terms of Output: +0.44 dB in favor of the AD 60


Cost


Price Differential between the AD 42 vs the AD 60: $80.00 more in favor of the AD 60


Bragging to everyone you have the most powerful amplifier Admark offers (at the date of this was written) to all your sound man friends: Priceless Clap


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Either Amplifier would require 4 mm/6 AWG cable to the loudspeaker/s to achieve the output power (Crest Factor) to attain the least amount of voltage drop (wattage loss). This due to the amplifiers drawing 45 – 47 amperes under the Crest Factor rating utilizing a 4 ohm per channel load.


Either amplifier will consume 48.5 to 53.7 amperes continuously to achieve the measured RMS (from the video) both channels driven (4 ohms per channel) under a 240-volt A.C. line source.


Best Regards,



Edited by Elliot Thompson - 15 January 2024 at 9:11am
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levyte357- View Drop Down
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Originally posted by MarjanM MarjanM wrote:

 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...


Marjan, as I'm sure you are aware,  power measured on a load with purely resistive component, is completely different, to what will be attained across actual loudspeakers, which do not possess purely resistive impedance.

And most will remember, an 8 ohm"nominal" driver, will present a load of approx 12 ohms in many cabs.

I "personally" view the AD42/AD60, in real terms, as a "possible" route, of getting more power than a Void Infinite 8, and slightly less power than a Powersoft K20, with possibly the same sub warmth, as a transformer/Powersoft X4L amp, on sub.

Can say this, because many people who own both, have told me the same thing, AD42 vs Powersoft K20.


Only way to confirm this, is to buy one, and try it.

EDIT: I also don't believe the specs for the Powersoft K20, at 2 ohms on sub, but it is proven to be extremely reliable, at powering 4x "8 ohm" subs per channel, without issue.



Edited by levyte357- - 15 January 2024 at 9:32am
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Elliot Thompson View Drop Down
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One more thing...

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. 

Best Regards, 
Elliot Thompson
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FALCETTA View Drop Down
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Originally posted by Elliot Thompson Elliot Thompson wrote:

To dive a little deeper into the numbers;


Crest Factor


AD 60


Advertised: 11,000 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 9,1026.25 watts per channel @ 4 ohms


AD 42


Advertised: 7,800 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 8,230.79 watts per channel @ 4 ohms


AD 60 vs AD 42


dB Differential in terms of Output: +0.44 dB in favor of the AD 60


Cost


Price Differential between the AD 42 vs the AD 60: $80.00 more in favor of the AD 60


Bragging to everyone you have the most powerful amplifier Admark offers (at the date of this was written) to all your sound man friends: Priceless Clap


Resources


Either Amplifier would require 4 mm/6 AWG cable to the loudspeaker/s to achieve the output power (Crest Factor) to attain the least amount of voltage drop (wattage loss). This due to the amplifiers drawing 45 – 47 amperes under the Crest Factor rating utilizing a 4 ohm per channel load.


Either amplifier will consume 48.5 to 53.7 amperes continuously to achieve the measured RMS (from the video) both channels driven (4 ohms per channel) under a 240-volt A.C. line source.


Best Regards,



48,5 / 53,7 ampere continui ??? 
con una corrente del genere diventano del tutto ingestibili, ma c'è anche il fatto che non verranno mai utilizzati alla massima potenza RMS.
Dovrei usare 2 AD60 per pilotare 2 double 18 che richiedono molta potenza, ho bisogno di una linea da 100 amp solo per i subwoofer??
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Edited by FALCETTA - 15 January 2024 at 9:38am
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Originally posted by Elliot Thompson Elliot Thompson wrote:

To dive a little deeper into the numbers;


Crest Factor


AD 60


Advertised: 11,000 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 9,1026.25 watts per channel @ 4 ohms


AD 42


Advertised: 7,800 watts per channel @ 4 ohms


Calculated based on the Measured RMS (from the Video): 8,230.79 watts per channel @ 4 ohms


AD 60 vs AD 42


dB Differential in terms of Output: +0.44 dB in favor of the AD 60


Cost


Price Differential between the AD 42 vs the AD 60: $80.00 more in favor of the AD 60


Bragging to everyone you have the most powerful amplifier Admark offers (at the date of this was written) to all your sound man friends: Priceless Clap


Resources


Either Amplifier would require 4 mm/6 AWG cable to the loudspeaker/s to achieve the output power (Crest Factor) to attain the least amount of voltage drop (wattage loss). This due to the amplifiers drawing 45 – 47 amperes under the Crest Factor rating utilizing a 4 ohm per channel load.


Either amplifier will consume 48.5 to 53.7 amperes continuously to achieve the measured RMS (from the video) both channels driven (4 ohms per channel) under a 240-volt A.C. line source.


Best Regards,

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53.7 amperes 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??
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Elliot Thompson View Drop Down
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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 consume over 100 amperes.

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

You need a 100 Amp Circuit.  



Best Regards,






Edited by Elliot Thompson - 15 January 2024 at 9:57am
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