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Magnepans

I'm kinda new to the plannar/magnepan world, but I am really interested in trying out a pair after all the reviews I've been reading. From what I understand these speakers are quite power hungry. What is the minimum I need to properly drive these? 
I currently have a VAC Avatar integrated tube amp. These are the stats:
Type: Integrated vacuum tube amplifier with MM phono stage and home theater (direct power amplifier) mode.
Tube Complement: two 12AX7 low noise (phono), two 12AX7 (line stage), three 12AU7/6189A (power amplifier), and four EL34 (power amplifier)
Options: Remote control for volume (motorized direct control) & mute
Power amplifier ("Home Theater" direct mode):
Output matching: 4 or 8 ohms nominal
Power output: 60 watts/channel ultra-linear; 27 watts/channel triode
Frequency response: 9 Hz - 35 kHz +0 / -0.5 dB, 3 Hz - 71 kHz +0 / -3.0 dB
Power bandwidth: 11 Hz - 63 kHz + 0 / -3.0 db ref. 50 watts
Gain: 25 dB ultra-linear; 23 dB triode
Residual noise: 1.5 mv at 8 ohm output
Channel separation: -72 dB @ 1 kHz; -60 dB @ 10 kHz
Line stage preamplifier:
Gain: 24 dB
Maximum input signal: Infinite (attenuation precedes line stage)
Noise contribution: Approx. 0.1 mv at power amplifier output 
THD contribution: Approx. 0.04% 
Tape output: Unity gain from selector, non-inverting 
Phono stage preamplifier: 
Gain: 37 dB (measured at tape output)
MC phono stage in place of the MM optional 
Residual noise: 3 mv at output (S/N ratio approx. 69 dB) 
Overload: 117 mv @ 1 kHz = 8 volts RMS output, 460 mv @ 10 kHz 
Frequency response: RIAA +/- 0.25 dB 
Notes: Does not invert absolute phase. 

Anyone know if these will do or if I'll have to upgrade? Love the tube sound . . . will I need to go solid state for Maggies? Thanks for putting up with the noobie question :) 
the_nature_boy
randy-11
1,913 posts
 
it happens sometimes; dunno how often (i.e. what % of units)

pricing should reflect a risk factor for that and consequent repairs

you could call the factory and ask Wendell how often it happens and if it is related to being near the ocean, in the sun, etc. AND if they can estimate a repair cost
hifidream's avatar
hifidream
135 posts
 
Nobel 100 thanks - the AHB2 has some very interesting topography (class H rails) but next to zero distortion based on their innovative feed forward error correction. Worth a serious look for high performing relatively low cost amps.

Gmosley - I did many years of research before buying Maggies and read about delamination issues which were caused primarily by age, improper storage, overdriving a small speaker or combination of the above. In most cases the owner was able to fix the problems with a kit from Magnepan to re-glue the wire to the Mylar and that it was a relatively easy fix. Also for as many Magnepans that have been sold the issue rarely comes up in any forum which means there must be an extremely low failure rate. I wouldn’t worry about it at all. . .

- Steve
randy-11
1,913 posts
 
The AHB2 is definitely on my own amp list.  For MMGs you should not need an amp that powerful; you do need a fairly large ability to deliver current into a straight 4 ohm load

BTW, re cables - maggies are not a complex impedance load, no need for any fancy cable to change the sound

as an update to some posts above, I found and bought a used pair of 3.7i's and saved $2,000 - currently using a Sunfire to drive them


hifidream's avatar
hifidream
135 posts
 
Nice congrats on the 3.7i's. I'm sure you'll love them! 
randy-11
1,913 posts
 
I do - only issue is the huge size and all-black ominous look to them

(at least they don't look like an alien predator about to eat me - like Wilsons)
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