Aleph 4 - the right amp?

[manisandher]

Does anyone have a view as to whether a production Aleph 4 is capable of driving a pair of speakers with a nominal impedance of 4 Ohms and a sensitivity of 92dB/W@1m?

My understanding is that the Aleph 4 does NOT increase power into lower impedances (though I'm not sure where I got this from).

I'd really appreciate your thoughts on this. Now just let me know.

Cheers,
Mani.

 

[Zen Mod]

say that yor Aleph 4 have at least 25% more power on 4 ohms than on 8

that's usual ratio for almost all Aleph amps

92db/w/m seems pretty adequate even for lesser Alephs , under condition that they have no wild impedance modul

 

[juma]

manisandher,
with low impedance speakers Aleph shows its ugly side (a CCS tricked into believing that he's a part of push-pull team).
And make sure not to take advice on this matter from people who own and listen to 16 Ohm speakers - not even if they have a monkey on the shoulder

 

[Melon Head]

And make sure not to take advice on this matter from people who own and listen to 16 Ohm speakers - not even if they have a monkey on the shoulder

Is that what that is?
Maybe a BA2 or F5 would be better.
I am sure you could tweak the ccs in the aleph to better match 4ohm speakers though, but maybe it is not worth the effort.
As a suggestion I would aim for 24V to 30V rails and 4A bias current.

 

[Zen Mod]

manisandher,
......- not even if they have a monkey on the shoulder

wrong ;

for all this years you didn't catch that I'm siting on her shoulder




mani - you know to judge by your own ears ;

nothing will be better than hear exact combo in your place

 

[juma]

wrong ;

for all this years you didn't catch that I'm siting on her shoulder

No, please don't do that - those pony tails are so you....

mani - you know to judge by your own ears ;

nothing will be better than hear exact combo in your place

Abosolutely - making one's own judgment is the best solution

 

[Bill Fuss]

The Aleph 5 does 90W into 4 ohms, AC gain is higher. You can also increase the AC gain in the Aleph 4 if you wish. Check out the spreadsheet for the X amps or the old Aleph spreadsheet if you can find it. I use a slightly tweaked Aleph J for my Seas Thors with fine results.

 

[Nelson Pass]

Normally I would say no, but the 92 dB sensitivity may buy
you the margin you need.