Dynaudio BM6A enigma

[auriel]

Greetings,

I have a very serious and weird problem with my brandnew pair of Dynaudio BM6A nearfield monitors.

I use a Yamaha MG16/6FX mixing console (don´t laugh, after buying the BMs my budget was as low as russia´s) and normally there should be no problem with the monitors when using the +4dBu master out of my mixing console... the BM6 can be switched either to +4dBm or -10dBm input signal.

So shouldn´t they work well with both settings like

+4dBu (master out, balanced) from the console to +4dBm BM6 amplifier

or

-10dBu (rec out, unbalanced) form the console to -10dBm BM6 amplifier???

Yes, they should work with both settings and they should sound identically, namely linear.

and here´s my problem:

When running with -10dBu the monitors sound different than they do with a +4dBm signal. I didn´t use the false output of the mixer and the input sensitivity switch on the monitors were set correctly.

with -10dBu they sound flat but "linear" to the ear and with +4dBu they have much more bass and less high frequencies (???!!!)

all of the cables are o.k., I checked them with sophisticated equipment.

What the hell is happening here? What is the real linear reference sound? and why do they sound so different?

Auriel