Monoblocks vs Vertical bi-amping vs Horizontal bia


In attemps to raise the sonic bar of my system, I'm considering my options which includes using a single stereo amp, mono blocks, or 2 stereo amps in either a vertical or horizontal biamped configuration.

Q1: Who out there has experience in how each of the above scenarios differs from one another. If you read Dennis Had's article on vertical biamping at his Cary web site, you'd think that that is the way to go but how does this differ from monoblocks which accomplish the same thing (i.e. one amp used per channel for all frequencies)?

Q2: In which situations do the various amp scenarios best lend themselves (room size, listening levels, speaker sensitivity and ohm rating etc. etc.)?

Thanks for your input.

Kevinzoe
kevinzoe
I will be trying Verticle amping and from what I have read it is better to have an outboad active crossover and drive each speaker with it's own amplification in order to make the driver's run more efficiently.Dedicated amps is what I would call it.There are those who say that having the same amplification by manfactures is better though so the best thing to do is experiment if you can.

There are alot of post regarding it.but my speaker's designer has talked to me about having an active outboard crossover being the main thing.It makes sense to me also.

Abex, Two questions: (1)Does having an outboard active crossover mean circumventing the one internal to your speaker and if so how is that accomplished? and (2)Isn't vertical biamping just the same as monoblocks - one amp per channel?!? Please clarify the differences as I seem to think that we're being pulled into thinking that monoblocks are the only way to go and I'm suspicious of manufacturer's hidden agendas . . .

Kevin
OK... Here's how I see it:

Vertical bi-amping would involve 2 stereo amps, not necessarily "stacked", but the left channel of amp 1 would drive the tweeters of speaker 1, and the right channel of amp 1 would drive the tweeters of speaker 2. Horizontal bi-amping would have the left channel of amp 1 driving the tweeter of speaker 1, and the right channel driving the woofer of the same.

I've always biamped horizontal, just in case of anomolies or minor differences in the amplifiers or power supplies/ transformers themselves. This would seem to have less impact on the width and focus of the soundstage if one of the amplifiers wasn't quite "on step" with the other. Of course this means that the amplifier driving your woofers is getting a world-class workout, while the high frequency amp is barely warming up.

While we're on the topic...
I'm currently using a pair of Anthem MCA2's to biamplify my NHT 3.3's (horizontal). I'm considering purchasing an Anthem AMP2se to amplify my mid/tweeters, and would appreciate advice and/or suggestions before I embark on this experiment. If things don't balance out well, I'll most likely purchase a SECOND AMP2se to drive the woofers as well.

Monoblocks x 4 would be the way to go, if cash were no object.

My 2 cents.
David.
Hifiho, there is a little confusion here. Vertical Bi-amping is:
The left amp drives the left speaker, period. Its output stages are split between the speakers high freq. input and the low freq. input.

Horizontal biamping is:
one amps output stages are driving the low freq. on both speakers, the other amp is driving the high freq. on both speakers.

And the active and passive stuff gets way detailed.

chucker