Martin Logan preface, receiver, and/or amp - AVS Forum
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post #1 of 5 Old 01-29-2010, 04:21 PM - Thread Starter
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I am wondering if someone can offer me some advice with regards to Martin Logan Preface speakers (Front L/R) and ML Encore (C/surrounds), Sub ML Dynamo 700. I am wondering what would be a good receiver to match these, considering the fact they are 4 ohms. Right now I have a Pioneer elite sc-25 (which can still be returned, if needed), but I am wondering if a Rotel RSX-1560 would provide more or the correct amount of power to these speakers. Right now I am thinking about running the Pioneer elite sc-25 with an Emotiva xpa-3 amp. Powering the Front L/R and center with the Emotiva and using the elite for surrounds. However, another idea I have is to use Rotel seperate Processor and amp (RSP-1570 and RMB-1575). Any thoughts on this would be greatly appreciated.

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post #2 of 5 Old 01-29-2010, 04:36 PM
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What is the size of your listening space?

How far will you be sitting from the speakers?

What volume levels do you typically listen at? Refererence?

Do you use (or intend to use) a powered subwoofer for some of the bass output?

It would also be helpful to know the sensitivity rating of these speakers.
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post #3 of 5 Old 01-29-2010, 10:50 PM - Thread Starter
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Listening space: 18 x 24
seating from speaker: Front L/R/Center = 15, Surrounds = 3
Normal Volume/ref level: -15 to -30 (varies bet. music/movies/audio format)
The Sub (ML Dynamo) is powered
Sensitivity: ML Preface (92 dB), Impedance (4 ohms)
ML Encore (92 dB), Impedance (4 ohms)

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post #4 of 5 Old 01-29-2010, 11:15 PM
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Those are pretty sensitive speakers, you aren't sitting very far away, you aren't listening at very loud levels, and you have a powered subwoofer reproducing the bass frequencies that require the most power output.

I doubt you will seriously tax the built-in amplification as long as your AVR is capable of driving a 4 ohm load. You'd almost certainly be better off spending that money on a upgraded subwoofer (or a second one).
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post #5 of 5 Old 01-30-2010, 07:35 PM
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The SC-25 should provide plenty of power. Don't see the advantage of the Rotel, frankly. However, the Emotiva amp is certainly a "clean" option. Regardless, the the Pio is a keeper for sure.
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