AudioAficionado.org  

Go Back   AudioAficionado.org > Manufacturers Forums > Magnepan

Magnepan Full-range ribbon and planar speakers

Reply
 
Thread Tools Display Modes
  #1  
Old 11-13-2018, 06:20 PM
TommyTunes TommyTunes is offline
Member
 
Join Date: Jan 2011
Posts: 67
Default Ampís and Maggie 20.7iís

Right now in my 2nd room, Iím using Pass XP22 PRE with a Pass X250.5 driving Maggie 3.7ís and Iím thinking of getting 20.7iís. My question would that amp be sufficient? I also have a ARC GS150 thst Iím not using and could swap that. Any opinions if either could drive the 20.7 adequately?
Reply With Quote
  #2  
Old 11-13-2018, 08:39 PM
Mikado463's Avatar
Mikado463 Mikado463 is offline
Senior Member

 
Join Date: Aug 2011
Location: SE Pa
Posts: 3,857
Default

try it and find out, my gut tells me the X250.5 will be the better of the two.

back in my 'Maggie Days' nothing sounded as good as Nelson's Threshold gear so I have no doubt his current offerings will do just fine.

do you have the room to do the 20.7's justice ?
__________________
Cheers .......Dave
Reply With Quote
  #3  
Old 11-13-2018, 09:20 PM
Beet Farmer Beet Farmer is offline
Senior Member
 
Join Date: Oct 2018
Posts: 100
Default

I purchased a pair of Magnepan 20.7 this recent Spring. Previously I owned a pair of Magnepan 3.6 (eight years).
I kept my Bryston 4B-SST≤ amp (500 watts at 4 ohms per channel)
My dealer said I had no need of a bigger amp.
The Pass X250.5 also has:
Power Output/ch (8 ohm)
250
Power Output/ch (4 ohm)
500
This from Pass site.
So I would say, if you are playing music at reasonable levels, 500 watts is more than enough. If you are currently playing your 3.6 without blowing them up... I would say you are 'good to go' using the Pass X250.5 with Magnepan 20.7

Took my Magnepan 20.7 about two months to break in fully. After I decided to add the one ohm resistor to the midrange. Really added a lot of warmth to the sound. But sent for some Mundorf 10 watt resistors, all sorts of values, 0.33 0.50 0.75 1.0 1.5 2.0 and tried them on the midrange. I liked the 0.5 Mundorf the best. With that I decided to really go all out and bought Duelund CAST resistors. but with those, the 0.75 ohm worked best. The Duelund really do sound better.
I put nothing on the tweeter, as I have a home made choke 31 turns around a thin dowel to keep ultra high energy down in the tweeter attenuation spot.
Do not be afraid to play with the midrange resistor value to get the sound 'just right' after the speakers are broken in..
Good Listening!
Reply With Quote
  #4  
Old 11-13-2018, 10:14 PM
nicoff nicoff is offline
Member
 
Join Date: Sep 2012
Posts: 1,417
Default

Is the 20.7i a new model that just came out? Iím familiar with the 20.7 but not the 20.7i.
Reply With Quote
  #5  
Old 11-13-2018, 10:49 PM
Beet Farmer Beet Farmer is offline
Senior Member
 
Join Date: Oct 2018
Posts: 100
Default

The 20.7 is just 20.7 only the early 3.7 and current 3.7i exist. Then the 1.7i and MMGi (those model numbers from the Magnepan website TODAY)
Actually the "i" update IS from the 20.7 model.
Reply With Quote
  #6  
Old 11-13-2018, 11:11 PM
nicoff nicoff is offline
Member
 
Join Date: Sep 2012
Posts: 1,417
Default

Quote:
Originally Posted by Beet Farmer View Post
...

Actually the "i" update IS from the 20.7 model.

Now Iím even more confused
Reply With Quote
  #7  
Old 11-14-2018, 09:40 AM
Beet Farmer Beet Farmer is offline
Senior Member
 
Join Date: Oct 2018
Posts: 100
Default

Sorry. Someone from Magnepan said the "i" update was IN the changes when the 20.1 became the 20.7 from the first day...
So the 20.7 has the widget, or whatever the thing is, already as a basic 20.7
Then, Magnepan decided after the fact, they could add the widget or whatever it is, to other models.
Since the 3.7 had already been in production, and Magnepan did NOT want to call the small upgrade a new model. to distinguish it from the original 3.7 they called the 3.7 with the tweak the 3.7i.
This was popular, and they added the tweak to the 1.7 to be 1.7i and the MMG to be the MMGi
SO as I wrote. The 20.7 already had the "i" tweak in it from day one.
They just never called it anything but 20.7
Reply With Quote
  #8  
Old 11-14-2018, 12:55 PM
TommyTunes TommyTunes is offline
Member
 
Join Date: Jan 2011
Posts: 67
Default

Quote:
Originally Posted by Mikado463 View Post
try it and find out, my gut tells me the X250.5 will be the better of the two.

back in my 'Maggie Days' nothing sounded as good as Nelson's Threshold gear so I have no doubt his current offerings will do just fine.

do you have the room to do the 20.7's justice ?
I think so itís 14 by 16
Reply With Quote
  #9  
Old 11-14-2018, 01:21 PM
Beet Farmer Beet Farmer is offline
Senior Member
 
Join Date: Oct 2018
Posts: 100
Default

"Do you have room to do the 20.7's justice?"
Quote:
Originally Posted by TommyTunes View Post
I think so itís 14 by 16
I would mention my listening space is 11' 8" wide on the end I have my 20.7 speakers on. The room is longer than yours, but I am seated only nine feet from the speakers, which the inner edges are about 42 inches from the wall (toe in so the outer edge is 58 1/2 inches from back wall)
Anyway I am seated about nine feet from the speakers.
My room extends back further, but not evenly. One side is a hall to front door of apartment. middle a 3' wide area sticking into area which are two closets, the other side is again going further back but is part of the kitchen area.
Anyway I have always pushed a small area with BIG SPEAKERS my whole life. No problems. Though figuring out how to avoid bass reflections doubling up gets a little harder in small spaces.
I would never hesitate to buy the speakers I want regardless of size. And would say large rooms present just as many challenges as small ones.
Reply With Quote
  #10  
Old 11-14-2018, 06:13 PM
Mikado463's Avatar
Mikado463 Mikado463 is offline
Senior Member

 
Join Date: Aug 2011
Location: SE Pa
Posts: 3,857
Default

Quote:
Originally Posted by TommyTunes View Post
I think so itís 14 by 16
you're joking of course .............
__________________
Cheers .......Dave
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Audioaficionado.org tested by Norton Internet Security

All times are GMT -4. The time now is 07:05 AM.



Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
©Copyright 2009-2019 AudioAficionado.org.Privately owned, All Rights Reserved.
Audio Aficionado Sponsors
AudioAficionado Subscriber
AudioAficionado Subscriber
Inspire By Dennis Had
Inspire By Dennis Had
Harmonic Resolution Systems
Harmonic Resolution Systems
Wyred4Sound
Wyred4Sound
Dragonfire Acoustics
Dragonfire Acoustics
GIK Acoustics
GIK Acoustics
Esoteric
Esoteric
AC Infinity
AC Infinity
JL Audio
JL Audio
Acoustic Sciences Corportation
Acoustic Sciences Corportation
Legend Audio & Video
Legend Audio & Video
Audio by E
Audio by E
Canton
Canton
Bryston
Bryston
WireWorld Cables
WireWorld Cables
Stillpoints
Stillpoints
Bricasti Design
Bricasti Design
Furutech
Furutech
Shunyata Research
Shunyata Research
Accuphase
Accuphase