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Magnepan LRS+ resistors on the tweeters… which?

I have a pair of LRS+ and after playing with the set-up positioning for a while I have finally found the spot where everything aspect of the sound is right apart from the treble: it is simply too high, and is tiresome after a couple of records.

But Magnepan knows it and fit a pair of sockets to allow the user to play with 10W resistors, ranged from 1 to 2 Ohm.

The resistors that come with the speakers are not the best and some users refer that they affect the sound too much.

So I wonder, what are the best resistors to fit in the LRS+ ?

audiofilo123

Showing 1 response by newfzx7

newfzx7
68 posts
 

From what I gather from the manual LRS+ are optimized to sound excellent in a good room (treated/ not too lively) and that they do, very much so. They included resistors to help correct a less than optimal room.

When I first got my pair, I found the treble had a bit too much sizzle when put on the more vertical aftermarket stands. I tried the resistors and it tamed the high end but they sound worse overall. After a little time that sizzle went away without using the resistors. My room is modestly treated and well damped and the LRS+ sound amazing in there especially with my two Rel subs helping out.

Here’s the blurb from the manual...

  1. OPTIONAL TWEETER ATTENUATION: There are several reasons for possibly needing to attenuate the tweeters in the LRS+:
      1. Recordings typically in the “pop” or “rock” vein often exhibit a pronounced rise in the treble region.
      2. The Magneplanar Quasi ribbon tweeter is very efficient in it’s total energy dispersion. If the surrounding walls are exceptionally reflective, the overall perceived acoustical balance can be tipped toward a “hot” high end.
      3. Put A and B together and it can be unbearable.
  2. Attenuation is accomplished by placing a resistor in the attenuation position on the connection plate (see Figure 1and 2 below). Provided with your speakers are 1 and 2 ohm resistors for this purpose. These resistors will provide 1 to 4 dB of attenuation. If you continue to have a brightness problem you might consider room treatment.
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