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MC2 E45 amp ability to power 2 ohm circuit
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cravings View Drop Down
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Points: 7392 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2022 at 12:14pm
anyone in your circles had a go of the delta 120 yet?
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paulus View Drop Down
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Points: 3144 		Post Options Post Options   Thanks (0) Thanks(0)   Quote paulus Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2022 at 1:23pm
is a shame about the e90 as it sounds great , but seeing it sat in clip on just 2 ,4 ohm drivers a channel on a 32 amp feed as well was an eye opener , many times too on 3 different systems also , using  PD 1852,turbomax 1200 and turbomax red eye :( i wanted one as well 
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Points: 8004 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2022 at 3:12pm
Originally posted by paulus paulus wrote:

is a shame about the e90 as it sounds great , but seeing it sat in clip on just 2 ,4 ohm drivers a channel on a 32 amp feed as well was an eye opener ,


Seen it do that, on Proper 32A power, powering just 2x PD1850 8 ohm per side !!

Maybe for HPF above 55hz, it would have faired better..
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luton_soundman View Drop Down
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Points: 4472 		Post Options Post Options   Thanks (0) Thanks(0)   Quote luton_soundman Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2022 at 4:11pm
Been told theres a new amplifier coming out soon from MC2 as the e90s been discontinued. 
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Points: 829 		Post Options Post Options   Thanks (0) Thanks(0)   Quote al_x Quote  Post ReplyReply Direct Link To This Post Posted: 10 December 2022 at 10:04pm
Originally posted by toastyghost toastyghost wrote:

Originally posted by al_x al_x wrote:

Originally posted by toastyghost toastyghost wrote:

Originally posted by al_x al_x wrote:

Originally posted by al_x al_x wrote:

I recently borrowed a friends E45 to power two B&C 18ds115 on sub. It managed 6 hours in a hot room, 4ohm bridge on a 13a plug quite happily (playing drum and bass and jungle so a lot of long sustained bass notes)


As the thread has resurfaced, I’ll give some more thoughts. 
I was fairly impressed with the e45 at the time but have since bought a CVR 3302 and powered the same drivers at 8 ohm on each channel, 13a plug.  Completely different beast, despite lower rated power (4200w to each driver on e45 vs 3300w with the CVR). 
I’m not sure how much of a hit an amp will take on sub notes being powered at 2ohm stereo/ 4ohm bridged compared to 8ohm stereo. 




The MC2 E45 is rated for 1250W per channel at 8 ohm, not 4200W. That's also measured with "continuous music" having a crest factor of 14 dB.

Unfortunately they don't list the peak voltage output.


We used the e45 in 4ohm bridge mode. So 8400w supposedly across the two 8 ohm drivers. 


Please don’t think I’m being patronising, but when using it in bridge mode are you connecting the speakers via a dedicated cable that ties the correct terminals of the amplifier’s two channels together?

From the MC2 E45 manual:
Quote Connecting To Your Amplifier: Bridged (Mono) Operation
Use the centre Speakon connector marked Bridge/Stereo, and depress the button between the XLR connectors to the “Channel Link [A]” position.
Connect the speaker as follows: Pin 1-: Cold (A) Pin 2+: Hot (B)
When operating in bridged more, the minimum impedances are doubled.
The minimum load in bridged mode is 4 Ohms.


I've seen a few people in the past get this wrong, as the correct termination varies from amplifier to amplifier. If not, you might not actually be giving the boxes the voltage you think you are.


It’s worth asking as I can see it being overlooked but no, we followed the correct procedure. 
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Elliot Thompson View Drop Down
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Points: 5086 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2022 at 12:13pm
Originally posted by Elliot Thompson Elliot Thompson wrote:


The MC2 e45 is put under more strain at 4 ohms bridged mono than the CVR 3302 at 8 ohms stereo mode. So the end result is having more headroom due to a lighter load in favor of the CVR. 

Best Regards, 

That applies to all amplifiers. The load plays a factor.

4 ohms Bridged Mono: 2 ohms per channel Stereo Mode

Enjoy your CVR 3302

Best Regards, 
Elliot Thompson
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Points: 8004 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2022 at 12:18pm
Seems in the UK, Admark AD42, is more respected, than the CVR.

Friend has few Admarks, says he will never touch CVRs.
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Elliot Thompson View Drop Down
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Points: 5086 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2022 at 12:24pm
I see more CVR in use globally than any others. Preference plays a factor. The differential in output is not noticeable enough between the AD 42 and, K 35/30. However, it would make sense to buy the AD 42 for it is supposed to offer more current on demand than the K 35/30.

Best Regards,
Elliot Thompson
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levyte357- View Drop Down
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Points: 8004 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2022 at 2:29pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

I see more CVR in use globally than any others. Preference plays a factor. The differential in output is not noticeable enough between the AD 42 and, K 35/30. However, it would make sense to buy the AD 42 for it is supposed to offer more current on demand than the K 35/30.

Best Regards,


Maybe we should continue this in another thread, as this one is about that great "mid tops" amp, the MC2 E45..
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Elliot Thompson View Drop Down
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Points: 5086 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 12 December 2022 at 1:39am
Sounds good.


Best Regards, 
Elliot Thompson
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