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Old 3rd December 2013, 05:57 PM   #7381
Julf is offline Julf  Europe
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Originally Posted by Toaster View Post
Linn Isobariks. Mostly KEF drive units though.
Indeed. I have been told that the first ones were built using 2 KEFkits per box.
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Old 3rd December 2013, 05:58 PM   #7382
troystg is offline troystg  United States
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Originally Posted by Toaster View Post
Linn Isobariks. Mostly KEF drive units though.
Ahhh. 'splains it...

Thanks.
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Old 19th December 2013, 04:17 PM   #7383
Drsah is offline Drsah  Slovenia
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What is recomended input power on xlr for hypex? 4Vrms or 8Vrms?
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Old 19th December 2013, 04:19 PM   #7384
OllBoll is offline OllBoll  Sweden
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Originally Posted by Drsah View Post
What is recomended input power on xlr for hypex? 4Vrms or 8Vrms?
When I calculate mathematically with 26 dB gain 2 Vrms should become ~ 40 Vrms, and 40^2 / 8 is about 200 which sounds about right.

EDIT: I checked an answer by Bruno and 2 Vrms it is for full power, at least into 8 ohm.

Last edited by OllBoll; 19th December 2013 at 04:26 PM.
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Old 19th December 2013, 04:27 PM   #7385
Drsah is offline Drsah  Slovenia
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So, 4Vrms on xlr is enouh if i have 8ohm speakers.
8Vrms is too much.
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Old 19th December 2013, 04:27 PM   #7386
Julf is offline Julf  Europe
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Originally Posted by Drsah View Post
What is recomended input power on xlr for hypex? 4Vrms or 8Vrms?
As OllBoll says - 2Vrms is the upper limit for input amplitude/voltage (not power), unless you modify or remove R141.
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Old 19th December 2013, 04:29 PM   #7387
Julf is offline Julf  Europe
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So, 4Vrms on xlr is enouh if i have 8ohm speakers.
8Vrms is too much.
Even 4 V is too much (doesn't matter if it is on an xlr, rca or whatever connector). If you want to drive it with 8V, you have to remove or replace R141.
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Old 19th December 2013, 04:32 PM   #7388
OllBoll is offline OllBoll  Sweden
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So yes, 4 Vrms is enough by far. Your ears will probably bleed before you run out of power =)

Just make sure you don't send a full 4 Vrms signal to the NCore since the speaker ( and your ears ) might not like it very much.
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Old 21st December 2013, 01:43 PM   #7389
Omholt is offline Omholt  Norway
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Paul McGowan:
Quote:
Me, I am just a designer who knows what he hears. What I hear is a far more open transparent sound signature when there is less feedback in the input stage of an amplifier.
Going against the grain | PS Audio

"Far more transparent" then Ncore? That's strong words and difficult to take seriously.
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Old 21st December 2013, 03:06 PM   #7390
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Paul McGowan:

Going against the grain | PS Audio

"Far more transparent" then Ncore? That's strong words and difficult to take seriously.
There was no comparison to Ncore mentioned in PM's post. The amplifier Mr McGowan is working on uses a proprietary input stage, coupled to a uCD output stage. Hopefully the new 0 NFB input stage will bring this amp to the next level, and I am interested in hearing it.
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