2. amps-preamps
  3. 190538-12723

Question on Luxman L-AX550ii balanced inputs

Hi all.

I've been googling like crazy all day, and I cannot seem to find an answer to this simple question.

What is the MAX input voltage that the balanced inputs on the L-550AXii can handle? (Ok, maybe not simple.)

I'm looking at a source that puts out 5.8 volts max, and I'm concerned that that might be bad for the amp.

I've written Luxman, but I don't know how soon they'll get back to me, and I'd really like an answer.

Thanks!

dasherma
nwres's avatar
nwres
223 posts
 

You state that your source has a max output of 5.8v. Does that mean your source has a variable output? If so, try it turned down low.

The manual states:

Pre-amplifier Input sensitivity/input impedance

LINE : 180 mV / 47 kΩ

MONITOR : 180 mV / 47 kΩ

BAL. LINE : 180 mV / 55 kΩ

Someone more knowledgeable may be able to assist with the math.

Good luck! 

 

dasherma OP
19 posts
 

Thanks @nwres.  The source does not have a variable output unfortunately.

I don't understand the math behind figuring the input voltage -- I have heard (but only on the internet) that a balanced input can generally take up to 10 volts input, but I'm not sure how much to trust that figure.

nwres's avatar
nwres
223 posts
 

I owned and loved the 550AXII before upgrading within the lineup. It is very robust.

What is your source component?

jperry
2,446 posts
 

I have a CL-38u preamp with balanced inputs and the instructions indicate the maximum input voltage is 2.5 V.

I was told that this input was designed for use with a Luxman CD player.

I think you can use other input devices, but the output needs to be 2.5 v max, otherwise the input will be overdriven resulting in distorted sound

 

 

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