Biamping mismatched amplifiers with McIntosh MEN220

[NavnFugl]

Hi,

I've acquired a set of JBL 4367 and now wish to enter the world of biamping.

Currently they're beeing fed by a Mark Levinson 532H power amp whom has a gain of 26.8dB, 300w 8Ohm.

In my system I've also got the McIntosh MEN220 incooperated for it's RoomPerfect.

Now I wish to utilize the MEN220's electroinic crossover / biamp function.

I'd like to use the ML for the bass drivers, and acquire a tube amplifier for the horns. Looking at McIntosh MC275 Mark VI for instance.

I gather that this would be "passive biamping" which I've come to understand is inferior to "active biamping" where you bypass the internal crossovers.
This mission is more for me to get started the world of biamping. I dream to acquire a set of JBL Everest DD67000 one day which have the option to bypass their internal crossovers built in.

Questions:
I understand that gain matching the amplifiers for biamping is important, but I wonder if the MEN220 will do this automatically or has the ability to?
Is matching the input impedeance of the amplifiers important as well? I've seen mixed views on this when researching.
Does anyone know the gain specification for the McIntosh MC275 MKVI? I can't find such listed anywhere.


I hope to receive some insight. Thank you

/NavnFugl

 

[twiiii]

if the new MC 451 weren't so dam expensive that is what I would use . They have their own crossover to protect the tube section from being unloaded and the SS section from waisting power producing highs. Then all you will need the MEN for is the room Perfect and parametric setup to bring the sound to your own personal preferences. Yes you need a PC to adjust the 6 filters for each channel of the MEN 220. OF course for true bi-amping you remove the passive crossover section for the woofer and midrange. Then I would use the amps you have already planned. I have done it so many times for my self and others i can't count. it does help to have a spectrum analyzer to get the best initial balance correct. The spectrum analyzer also helps you see if you have the polarity between the midrange and the wooer wired correctly before turning loose the Room Perfect section of the MEN 220. I would prefer the MK IV version of the 275 because it has its own input level controls. But thats just me.