flyingrain Posted May 11, 2017 Posted May 11, 2017 Greetings all, New to the forum as I only moved to down under recently, and finally got to restart from scratch building a av system in the new home. I used to have a pair of Magnepan 12 for music only driven by a Sony ES series amp. Now I am looking at getting a pair of second hand MG MC 1 or 1.7 as main music speakers and wondering if something like a Rotel RB-970 can drive it sufficiently? I mainly listen to classical music in "normal" sound level, although the listening space is quite large, about 50 square meters and has a high / vaulted ceiling. Any advice would be greatly appreciated! Regards -Ringo Sent from my ONE A2001 using Tapatalk
Bilbo Posted May 11, 2017 Posted May 11, 2017 Welcome to the asylum Ringo. At 130 watts into 8 ohms and I would guess over 200 watts into 4 ohms it should have no problems driving the Maggies to reasonably high listening levels. In fact I am selling my 1.7's as I have upgraded to the 20.7's so select the link in my posts footer to check them out. Regards Bilbo
gonefishing999 Posted May 12, 2017 Posted May 12, 2017 @ghost4man @djb @andyr @Point source these guy all have Maggies they will give some good advice. Peter
ghost4man Posted May 12, 2017 Posted May 12, 2017 @flyingrain I have 4 pairs of maggies. I have Tympani 1Ds(L and R) MGMC1s ( centre ) IIIAs ( upstairs ) MMGs ( rears) I am using 2 Lexicon 5 channel amps which I think are the bomb with maggies. They have unconditional stability into 2 ohm loads which is crucial. The best that I have heard maggies with is paired with the Sanders - stupendous 1 ohm stability - and BHK PS Audio monoblocks The Lexicon will give you incredible service. At the moment I have it running a dedicated 1.9 ohm load in an active setup. For most amps this is a brutal load to deal with especially from 1100Hz and up. @andyr can appreciate the struggle of driving maggies without blowing up AND being musical. In my opinion any Maggie owner out there should ONLY consider amps with 2 ohm unconditional stability.
andyr Posted May 12, 2017 Posted May 12, 2017 2 hours ago, ghost4man said: I can appreciate the struggle of driving maggies without blowing up AND being musical. In my opinion any Maggie owner out there should ONLY consider amps with 2 ohm unconditional stability. But I have never had a struggle "driving Maggies without blowing up AND being musical" since going 3-way active, 15 years ago! And I've never clipped the ribbon amp and so blown a ribbon. The only reason I am trying this test with the ME 75 is your report that you solved your "16Khz roll-off" problem by changing amps. So I am doing the same test - with an amp that is known to be able to drive 2 ohm loads, well. Andy
ghost4man Posted May 12, 2017 Posted May 12, 2017 @andyr My issue was not actually a 16Khz roll off. It was more 10k and above. Im not sure about your follow up comment. My impression was that you did some testing which was revealing where you discovered that your amps werent up to the task which was reflected in some of your measurements. I cannot comment as well with whether or not you have experienced struggles. My feeling is that if the ME performs as it should then the decision should be easy. My experience thus far is that an amp which is "great" at 4 ohms may not equate to an amp that is effective driving speakers like Maggies which will dip down below 2 ohm loads. These Lexicon amps are beauties. You should ask @gonefishing999 who went to a fellow colleagues place and compared his Lexicon to that of the Sanders and did some testing. The graphs are quite amazing.
flyingrain Posted May 12, 2017 Author Posted May 12, 2017 Welcome to the asylum Ringo. At 130 watts into 8 ohms and I would guess over 200 watts into 4 ohms it should have no problems driving the Maggies to reasonably high listening levels. In fact I am selling my 1.7's as I have upgraded to the 20.7's so select the link in my posts footer to check them out. [emoji4] Regards Bilbo Cheers for the info mate. Noticed your 1.7 but it's in black[emoji17] , the WAF doesn't look good... Sent from my ONE A2001 using Tapatalk
Bilbo Posted May 12, 2017 Posted May 12, 2017 You could get a set of white covers from Bill McLean to keep her happy!
Blk plastic Posted May 12, 2017 Posted May 12, 2017 7 hours ago, flyingrain said: Cheers for the info mate. Noticed your 1.7 but it's in black , the WAF doesn't look good... Sent from my ONE A2001 using Tapatalk There was a pair in off white in the classifieds here last week at a great price ,in Canberra i believe.
flyingrain Posted May 13, 2017 Author Posted May 13, 2017 You could get a set of white covers from Bill McLean to keep her happy! That's very good to know! Working on it...[emoji109] Sent from my ONE A2001 using Tapatalk
ghost4man Posted May 13, 2017 Posted May 13, 2017 You can source the white covers directly from Magnepan as well in the US. Not a big deal to do.
flyingrain Posted May 13, 2017 Author Posted May 13, 2017 [mention=160893]flyingrain[/mention] I have 4 pairs of maggies. I have Tympani 1Ds(L and R) MGMC1s ( centre ) IIIAs ( upstairs ) MMGs ( rears) I am using 2 Lexicon 5 channel amps which I think are the bomb with maggies. They have unconditional stability into 2 ohm loads which is crucial. The best that I have heard maggies with is paired with the Sanders - stupendous 1 ohm stability - and BHK PS Audio monoblocks The Lexicon will give you incredible service. At the moment I have it running a dedicated 1.9 ohm load in an active setup. For most amps this is a brutal load to deal with especially from 1100Hz and up. [mention=104099]andyr[/mention] can appreciate the struggle of driving maggies without blowing up AND being musical. In my opinion any Maggie owner out there should ONLY consider amps with 2 ohm unconditional stability. Mate that takes a lot of amp...Even if I just listen really closely within 3-5 meters?Sent from my ONE A2001 using Tapatalk
ghost4man Posted May 13, 2017 Posted May 13, 2017 1 minute ago, flyingrain said: Mate that takes a lot of amp...Even if I just listen really closely within 3-5 meters? Sent from my ONE A2001 using Tapatalk You have to look at an impedance curve across the frequency spectrum. I have dabbled with numerous amps and have found for myself the ones with loads of grunt to work better.
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