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Axiom Amplifiers: The Next Generation
#374934 05/02/12 10:18 PM
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Ian Offline OP
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I mentioned last month that we were pretty close on the new amplifiers and now it is time to introduce some details for everyone here. There will be three series of amplifiers available in 2 through 8 channels each. We have been calling these amp series the 1000, the 1250, and the 1500 around the lab as that represents the maximum output at the speaker output of each with all channels driven as established by their respective power supplies after all efficiency losses. No doubt you can expect a naming contest on these from Amie shortly.

First and foremost I would like to thank Andrew, our resident master of all things audio. These new amps are his brainchild and represent the culmination of over 2 years of work by Andrew on the designs. I cannot say enough about how impressed I and the whole Axiom team are with the results of his work on these projects. They are spectacular. But it goes far beyond the new amplifiers; Andrew’s on-going work on all the products at Axiom has been amazing and we’re so fortunate to have him with us. Improvements driven by Andrew are having a positive influence on our entire line-up of products. The innovation he is driving has added so much excitement and energy to both our products and the people working on them, and I’d like to thank him very much for his contributions. We are all looking forward to an exciting future with lots of both great new products and great improvements to our existing ones, with Andrew driving forward what we can accomplish.

These amps will be ready for shipping on July 20 though we will have a few available earlier for anyone who has purchased LFR1100s. They all come in the same chassis. It is a really heavy duty chassis made from 2mm steel with a 9mm aluminum face panel. The height is 3U for all of them. All these new amplifiers are Class-D amplification with massive analog power supplies and they are all north of 90% efficient at full power. This efficiency is an important benefit to our amps. A typical Class-AB design is around 50% efficient which means that ½ of the output from the transformer is wasted off in heat which is quite limiting to your overall output with all channels driven (given a single power cord on a regular 15amp circuit). The maximum you can extract from a typical wall plug is 1800 watts. Given a reasonably efficient and absolutely massive power supply you can end up with somewhere around 1650 watts available to the amplifiers. So at north of 90% efficiency you can easily achieve 1500 watts of total output (hence our 1500 series lab name). But at 50% efficiency you are limited to around 825 watts. That is a massive difference in a multi-channel amplifier. Below is a little chart that shows how the output power works for each of our amplifier series:



When considering what power is right for you it is important to keep in mind that in a typical home theatre system the power demands from the surround channels are much less than the front three so you will tend to have more power available where you need in the real world. A 7-channel amp utilized in a home theatre system will tend to act more like the 5-channel for power per channel as shown in the above chart.

As for the inputs available, the 1000 Series is RCA only. Both the 1250 Series and the 1500 Series have both RCA inputs and fully balanced XLR inputs. All the amplifiers can be powered with 100 volts, 120 volts, or 240 volts depending on what is available in your country. This is easily selectable inside the chassis but we will pre-set it at the factory for the country it is being shipped to.

As for the pricing I have created another chart below which shows the price of each model in its respective number of channels. We will also be doing a 2-tiered pre-order deal similar to what we did with the LFR1100.




Ian Colquhoun
President & Chief Engineer
Re: Axiom Amplifiers: The Next Generation
Ian #374935 05/02/12 10:49 PM
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Very exciting! Well done, congratulations and best wishes.


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Re: Axiom Amplifiers: The Next Generation
tomtuttle #374940 05/02/12 11:42 PM
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Everything Tom said!

Ian, is the styling of the amps similar to the styling of the DSP boxes?


::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
Re: Axiom Amplifiers: The Next Generation
Ian #374960 05/03/12 02:06 AM
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Nice! Congrats on the new amps. Hope they work out well.


I am the Doctor, and THIS... is my SPOON!
Re: Axiom Amplifiers: The Next Generation
Ian #374965 05/03/12 04:05 AM
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Sounds like you guys really hooked a big one with Andrew. And he likes beer, too!

He's, like, the perfect engineer. smile


I can explain it to you but I can't understand it for you.
Re: Axiom Amplifiers: The Next Generation
Ian #374967 05/03/12 04:27 AM
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Looking good. I can't wait to get one into my system along with the LFR1100s.

Re: Axiom Amplifiers: The Next Generation
Ian #374968 05/03/12 04:44 AM
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Originally Posted By: Ian
All these new amplifiers are Class-D amplification with massive analog power supplies and they are all north of 90% efficient at full power. This efficiency is an important benefit to our amps. A typical Class-AB design is around 50% efficient which means that ½ of the output from the transformer is wasted off in heat which is quite limiting to your overall output with all channels driven (given a single power cord on a regular 15amp circuit). The maximum you can extract from a typical wall plug is 1800 watts. Given a reasonably efficient and absolutely massive power supply you can end up with somewhere around 1650 watts available to the amplifiers. So at north of 90% efficiency you can easily achieve 1500 watts of total output (hence our 1500 series lab name). But at 50% efficiency you are limited to around 825 watts. That is a massive difference in a multi-channel amplifier. Below is a little chart that shows how the output power works for each of our amplifier series:


Ian, or Andrew, what is the rating of the power supply?

I also find it interesting that the rating for a typical wall outlet was included; this is something that i think often gets over looked.. With the 1500, would the recommendation be to have a dedicated breaker on the outlet that the 1500 would be plugged into? It might be prudent in older houses, where there are more outlets on fewer breakers..

Good luck with the new line of amps!

Re: Axiom Amplifiers: The Next Generation
Ian #375021 05/03/12 04:18 PM
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Exiting stuff. Congrats on the new product!


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Re: Axiom Amplifiers: The Next Generation
Ian #375036 05/03/12 05:24 PM
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Congratulations Ian and Andrew on the new amps!

It's interesting how the outputs on 4ohm vs 8ohm average down to the same numbers as more and more channels are added.


Half of communication is listening. You can't listen with your mouth.
Re: Axiom Amplifiers: The Next Generation
Ian #375039 05/03/12 05:32 PM
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I'm guessing the per channel power it limited by the output device, which can flow nearly twice as much into half the load. But the total power output of all channels is limited by the power supply.


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