ATI (Amplifier Technologies) Owners Thread

[Sly]

He might also be a little more prone to "bias of all sorts" than others.

Yeah his reaction wasn't very conclusive.
Though ati suggest 7 days of playing music to break it in lol. Never noticed speaker break in let alone amps.
Yep refrence 1, wasn't to sure of the power needed hence me asking, they look difficult but sure those amps would have decent current, don't perticually want to go overboard as they end up expensive n really heavy.
My fault for settling on a/b me thinks lol.

 

[PENG]

Though ati suggest 7 days of playing music to break it in lol. Never noticed speaker break in let alone amps.

Dr. Floyd Toole put it well in saying something like "It's the ears that got broken in", not the speakers, or electronic gear I guess..

Yep refrence 1, wasn't to sure of the power needed hence me asking, they look difficult but sure those amps would have decent current, don't perticually want to go overboard as they end up expensive n really heavy.
My fault for settling on a/b me thinks lol.

In my opinion, your choice of going with amps rated 200 W 8 ohms, 300 W 4 ohms is about right for the Reference 1. When manufacturers say 50-200 W, you know it is better to go with 200 W, so peak would be 400 W, and that should get you the best out of those speakers, in terms of satisfying their voltage/current need, more may be better, say up to 400 W 4 ohms capable amps. There are good information in the linked review, but that's for the Reference 1 Meta, the non Meta version will be different but I am sure they would be similar enough in terms of current requirements.

Kef Reference 1 Meta Bookshelf Speaker Review

From the measurements, you can see that the Ref.1's loves currents, and it has rather low EPDR (a misleading spec, that says more about heat dissipation, than currents). That, from my understanding, you may be better off using class D amps such as the popular Hypex or Purifi modules based power amps. Class D amps seem less prone to low EPDR than class AB amps that would have to dissipate lots of heat in the output devices, but obviously the ATI signatures should be good with that too.

 

[Sly]

Dr. Floyd Toole put it well in saying something like "It's the ears that got broken in", not the speakers, or electronic gear I guess..




In my opinion, your choice of going with amps rated 200 W 8 ohms, 300 W 4 ohms is about right for the Reference 1. When manufacturers say 50-200 W, you know it is better to go with 200 W, so peak would be 400 W, and that should get you the best out of those speakers, in terms of satisfying their voltage/current need, more may be better, say up to 400 W 4 ohms capable amps. There are good information in the linked review, but that's for the Reference 1 Meta, the non Meta version will be different but I am sure they would be similar enough in terms of current requirements.

Kef Reference 1 Meta Bookshelf Speaker Review

From the measurements, you can see that the Ref.1's loves currents, and it has rather low EPDR (a misleading spec, that says more about heat dissipation, than currents). That, from my understanding, you may be better off using class D amps such as the popular Hypex or Purifi modules based power amps. Class D amps seem less prone to low EPDR than class AB amps that would have to dissipate lots of heat in the output devices, but obviously the ATI signatures should be good with that too.

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Was definitely my brain getting used to the arendals, took about a week, but i could tell how used i'd got to my q accoustics which had an extended treble so you could hear "detail", once i figured it was boosted i was determined to give more time n patience to my next speakers. I'd tried out at least 12 other speakers.
Its funny you mentioning that class d might be better, reading through Rich.b's thoughts and the thread about the ati class d, and having second thoughts about it.
Have been under the impression though that the added simbilance might not to my taste, leaness (which could be eq'ed out - so should'nt be concern) maybe worrying about it to much but don't want to make an exspensive mistake.
Thought 400w@4ohm would be best though, you confirmed my lingering concerns.