New House, New Audio Room!


#1
  • Main speakers: Magnepan 3.6R
  • Bass reinforcement: Magnepan IIIA bass panels
  • Preamplification: Cary SLP-05
  • Amplification: Parasound JC-1 monoblocks
  • Power: PSA P-10
  • Media player: Bryston BDP-2
  • DAC: PSAPW Direct Stream
  • Turntable: Kuzma Stabi (Kuzma Stogie tonearm), Lyra Delos MC cartridge
  • Sutherland 20/20 phono preamp (fed by a K&K step-up transformer)
  • Audience interconnects
  • Goertz speaker cables
  • 10ga shielded power cabling throughout
The audio half of the room is is powered off a dedicated 20 Amp breaker (first thing I did to the house!). I was lucky that I never sold my old Maggies. The 3.6Rs produced no bass at all by themselves in the new room (15.5' x 30').

This system represents a complete redesign of my previous system. In the past two years I’ve replaced just about everything but the turntable (new cartridge and step-up though). The timing of the new DirectStream release and upgrade was a bonus!

The new space would not accommodate what I was using as an equipment stand; so, I’m using a crappy old console to hold the non-turntable equipment. The 100+ pound butcher block table works great as a turntable stand. I look forward to the improvement in sound I’ll get from a more rigid equipment rack – suggestions welcome!

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#2

Very nice.


#3

I use a Grand Prix Audio rack and have been very happy with it for almost 15 years.

Pricy but worth it

http://www.positive-feedback.com/Issue40/grandprix_audio.htm


#4

Box Furniture Co. I have one in Maple… Truly heirloom quality fit and finish, and I hate to say it but my system sounds much better on it that anything else I’ve used…

http://www.boxfurnitureco.com

http://dagogo.com/box-furniture-company-d3s-audio-rack-review


#5

Classy…! 77_gif


#6

Followup:

  • I ended up choosing a Mapleshade rack (liked the adjustability and the price).
  • I took the wood accent pieces off of the MGIIIAs, and placed the panels closer to the sidewalls (better bass!).
  • Found a guy who could repair my old Revox PR99 -- my Barclay-Crocker, as well as other prerecorded tapes are a revelation!
  • Picked up a PSA memory player to round out the system.
By the way, I've discovered that Magnepan's latest iteration of the ribbon tweeter has a much smoother response (less beamy and bright) than the ribbons that were originally on the 3.6Rs. I kept wondering why the right channel of my system was so much louder and brighter than the left -- turns out it was the difference between a 1990's ribbon and 2004-5 ribbon. So, if you have a pair of 3.6Rs, a cheap upgrade would be to swap in new ribbons. The newer ribbons completely changed the sound (for the better) of the 3.6Rs -- much better midrange to HF integration.

#7

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#8

Looks great. A very interesting speaker combination to me. I owned the Tympani 4a’s so the size and configuration is about as close as I have ever seen.

With them, I set the mid/tweeter panels up first with tweeters on the inside. I created the classic triangle and sweet spot intersection and slowly adjust toe in to create a continuous sound filed, then I moved them forward and back until I found a smooth midrange response.

After that I marked the floor with painters tape and placed the bass panels on the outside of the midrange. It was a much slower process (1/4" at a time) to create a smooth bass in the room. The end up toed in slightly more than the mid/tweeter panels and almost tight together.

How was you experience with your configuration?

Cheers

Tom eh


#9

Thanks Tom eh.

The good news is that although the room looks symmetrical, it is not. Even that window behind the speakers is off center by about a foot. Add in the patterned ceiling, the offset doors leading in an out of the room, the listening area being 3-4 ft narrower than where the speakers are and you have the makings of a decent sound room (even though I couldn’t use the long wall)!

Problem was, after a month or so of moving the speakers around, I just couldn’t get acceptable bass response – great imaging, but no bass. I like my Maggies with the tweeters to the outside. To my ears, in this room, I get a fairly large sweet spot, and a good sense of stage.

What gave me the idea to use my old 3As as bass panels was Magnepan’s own DWM, but it did take a while to realize that the bass crossover frequencies of the 3A and the 3.6Rs were different – couldn’t quite get the speakers to “blend” properly. I did a little research, and then redid the 3A crossovers.

With the tweeter/mid in the center between two bass panels, the speakers disappear, and I get a wider and deeper soundstage. And because the speakers are separate, I was able to optimize the placement of the 3As for the best bass response – close and perpendicular to the side walls.

JAH


#10

Just a note: Using two Maggie pairs this way derives a static impedance of 2.5 ohms – might be a bit low for some amplifiers.


#11

NICE bro4_gif