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The Official Magnepan Owners Thread - Page 91

post #2701 of 3544
Quote:
Originally Posted by DonH50 View Post

Magnepan claims 50 Hz. I have found their claims accurate, but as with any dipole you have to play with positioning to optimize the bass. Furthermore, distortion rises with large excursions that LF's generally exhibit, and you are giving up dynamic range, so I would cross them maybe half an octave higher, around 75 - 80 Hz.

I have never heard the MMGs. I had MG-Is, which appear similar, and crossed them at 50 Hz for a while. They were much happier crossed a little higher (75 Hz) after I built a sub to take over, and the system was much cleaner, louder without the panels trying to reproduce bass signals.

Thank you, I will cross them over at 80 then that way there is no worries, will the Classe CA-5200 be sufficient I read that hey we're very power hungry!

On an other note it seems that Magnepan does not respond to email!! Not very customer oriented?
post #2702 of 3544
That Classe should be fine for the MMG. I used a Parasound and had good results, and it was a step down in terms of power and probably build quality.

I've found Magnepan to be great on the phone. I'd guess they get so much random email that it's a slower response time.
post #2703 of 3544
I wasn't aware Magnepan even posted an email address. They are very responsive by phone, they only seem unresponsive in the Internet/email age. They are a small operation and are not equipped to screen the thousands of daily emails they would likely get.
post #2704 of 3544
I finally received the speakers today! How many hours do they need to play for to be broken in? I didn't know what to expect but so far it's not bad not bad at all:)

Of course having them plugged into Classe CA-M600 mono blocks doesn't hurt either!

I listened to these CDs

http://www.amazon.com/Blue-Guitar-Sessions-Jesse-Cook/dp/B008OHV6JA/ref=ntt_mus_ep_dpi_2

http://www.amazon.com/Rumba-Foundation-Jesse-Cook/dp/B002IVLWEW/ref=ntt_mus_ep_dpi_3

http://www.jessecook.com/music
post #2705 of 3544

What is the minimum requirement fot these speakers in terms of amplification?

post #2706 of 3544
Depends on your room size, how far away you are, how loudly you like to listen, etc. As I said, I have driven older smaller models with 35 W, and larger models with >1 kW amplifiers. And pretty much everything in between.

A pair of them about 12 feet (~4 m) away, assuming 85 dB/W/m, need about 200 W (into 4 ohms) to hit 100 dB peaks.

http://myhometheater.homestead.com/splcalculator.html
post #2707 of 3544

Magnepan really ignores email! Whoa talk about customer service?

post #2708 of 3544
As has been said, Magnepan does not "do" email. Their service is great, but you have to call them. They do not post an email address on their website.
post #2709 of 3544

There is an email on their invoice!!! Pathetic if you ask me welcome to the 21st century

post #2710 of 3544
Easier, quicker and more effective to call them.

But you can use their email address, if you like.
post #2711 of 3544
Quote:
Originally Posted by nathan_h View PostEasier, quicker and more effective to call them. But you can use their email address, if you like.

I did they never respond!!!

post #2712 of 3544
Exactly. Which is why we are recommending you use the phone. I always get a knowledgable helpful person when I call.
post #2713 of 3544
I have a pair of 3.7's and recently bought a Martin Logan Descent sub- a setup I assume is not that unusual (hey, even Paul McGowan of PS Audio has the same setup almost- his are 3.6's).
I am having a very difficult time trying to blend them with the sub after 2 months of playing around. I've done the sub walk, started and adapted ML's suggested settings, but just feel like I'm missing the sweet spot.
Any help on this would be greatly appreciated.
post #2714 of 3544
What do you mean by "missing the sweet spot"?
What are your room dimensions ( a sketch would be great)?
What are the settings on the sub?

Integration issues are usually a problem with the crossover, phasing at crossover point, and/or room modes.
post #2715 of 3544
Quote:
Originally Posted by mfigxxx View Post

I have a pair of 3.7's and recently bought a Martin Logan Descent sub- a setup I assume is not that unusual (hey, even Paul McGowan of PS Audio has the same setup almost- his are 3.6's).
I am having a very difficult time trying to blend them with the sub after 2 months of playing around. I've done the sub walk, started and adapted ML's suggested settings, but just feel like I'm missing the sweet spot.
Any help on this would be greatly appreciated.

I have found using the lowest settings for the crossover seem to blend best. 40-50hz Any tonal differences are moot at those frequencies. I have my 1.6's crossed over at 50hz and that works very well. I would use 40hz but I have a bad room mode around 44-46 and I want all of audyessy's power to tame it.
post #2716 of 3544
Yoi are so right- their phone service is amazing! I had an issue with a banana post breaking off and called them. The secretary that answered the phone literally put down the phone and ran to the other end of the factory to ask one of the staff who builds the 3.7's to get my answer!
Love them!
post #2717 of 3544
Can I drive the MMG with this? TEAC A-H01 http://www.teac.com/product/a-h01/
post #2718 of 3544
It might, but depends a lot upon how far away you are and how loudly you like to listen. The amp is spec'd at 60 W/ch into 4 ohms, which yields about 99 dB max if you are listening 8' away. That is pretty durn loud but that is peaks; if your average volume is around 80 dB (still pretty loud) you may be fine.

Run over to the SPL calculator site and see how it might work in your situation: http://myhometheater.homestead.com/splcalculator.html

One caveat: whilst this is the calculator I use the most, it does not reflect the line-source nature of Magnepans and thus tends to underestimate the loudness at the listening position. You could add 3 dB to the rated sensitivity as a rough correction factor.
post #2719 of 3544
Quote:
Originally Posted by DonH50 View Post

It might, but depends a lot upon how far away you are and how loudly you like to listen. The amp is spec'd at 60 W/ch into 4 ohms, which yields about 99 dB max if you are listening 8' away. That is pretty durn loud but that is peaks; if your average volume is around 80 dB (still pretty loud) you may be fine. Run over to the SPL calculator site and see how it might work in your situation: http://myhometheater.homestead.com/splcalculator.html. One caveat: whilst this is the calculator I use the most, it does not reflect the line-source nature of Magnepans and thus tends to underestimate the loudness at the listening position. You could add 3 dB to the rated sensitivity as a rough correction factor.

Thanks I will try it and see how it sound!
post #2720 of 3544
Quote:
Originally Posted by wse View PostThanks I will try it and see how it sound!

It works that thing  A-H01-S (Silver)is pretty cool :)

 

The Magnepan are not as good as these.

 

 

KEF_LS50_1_zoomin.jpg

 

 

 

 

I am going to get the next version

 

 

 

 

 

 

 

 

 

 

 

AI-501DA-B (Black)
AI-501DA-B (Black)
 

 

 

post #2721 of 3544
Hi,

Curious who has a larger projector screen setup and how far apart you set your maggies?

My setup consists of 1.6's and they were spaced approx. 5-6'(measurement on inner edge) apart.
I sitting back about 9' and this sounded great for me for the longest time.

The projector lens is not too flexible so the smallest screen I get is approx. 116".
In order for me to get a full view of the picture, I now have to move the 1.6's at 7' apart.
This is about 1.5' from the side walls now.

I'm just curious how you got around to finding the best comprise between maggie speaker spacing vs. screen size
and seating distance.

I understand acoustic screen material is an option but too expensive for me.
post #2722 of 3544
It's an interesting question. I went with about 9' apart, about 9' from the seating position. Not ideal, perhaps, but it's what my room permits.
post #2723 of 3544
I have not found spacing to be terribly critical within some reasonable bound of the usual equilateral triangle. Side wall distance is not critical since they act like line sources from low midrange on up, radiating little from sides (or top/bottom). I usually find I spend the most time adjusting distance from the back wall (if not treated) and toe-in to optimize the image.

For reference, speakers (any speakers) too widely spaced (or toed out) tend to have a "hole in the middle" effect. Too close, and you lose stereo separation.

HTH - Don
Edited by DonH50 - 5/24/13 at 10:50pm
post #2724 of 3544
I picked up a pair of 2.7R's a couple weeks back pushing my MMG's to surround duty. I'm driving both pair with a Denon 3313. I've got plenty of power for the volumes I like to listen.

So far I'm really liking the bigger Maggies. I need to decide if I will keep the MMG's or go back the MMGW's as surrounds.
post #2725 of 3544
I listen to the movies by pair of MG-20 speakers and now I'm about to add magnepan surround speakers and woofer to have 5.1 surround sound, but after extensive listening I found the sound filling my room and I can hear the sound coming from all directions even from back, look like a pair of MG-20 is sufficient for home theater. Since I never use full 5.1 speaker setup with MG-20 I cannot be certain so I thought I ask here. If I add surrounds and woofer to MG-20 will make huge sound improvement ?

My listening setup at the moment: I set digital output from DVD player to PCM two channels (not bitstreem), and I set preamp/processor to Preamp mode which is stereo only. My Preamp/processor is old Krell Audio Video Standard.
And thank you for answer.
post #2726 of 3544
You are getting a sense of space, the 20's probably dig deep enough to obviate a sub for a lot of material, and you can get away with a phantom center (center will be mixed to the L/R speakers), but without surround speakers you are not getting the actual information in those channels from the movies. Whether adding surrounds would be a "huge" improvement only you can say. I will say I am happy with my MC1 surrounds working with my MG-IIIa's. Some scenes and/or movies make good use of the surrounds and add a lot to the movie experience IMO.

When you say "woofer" do you mean a subwoofer or one of the Magnepan woofers? I would not add the latter to that system, not needed IMO. I would either get a real subwoofer (I use Rythmik), spend the money on a center setup (CCR+speaker stand or DWM), or save the money.

YMMV - Don
post #2727 of 3544
Hey Guys,
I have an infant that just started to learn to crawl and will probably soon learn how to walk. I have Magnepan MMG's sitting on hardwood floors. I need to childproof them so the kid can't run into them and they tip over onto my kid.





I was thinking of placing some sort of heavy weight on top of the iron stands. If I do this, the approximate dimensions of the useable space the iron stands take up is approximately. 8" x 13" . I'm looking for ideas on what to use as weights or if you got any other ideas to childproof, i'd love to hear them....

The only thing I can think of is using a bumper plate weight from a gym set like this:


Edited by skiracer_blah - 5/23/13 at 11:33pm
post #2728 of 3544
May I ask why subwoofer and not magnepan woofer ? l learned subwoofers sound fast than magenpan speakers, which the LFE might not synergy with other magnepan speakers.

For surrounds, is MG12 or 1.7 have better resolution than MMC 2?
And thank you.
post #2729 of 3544
Quote:
Originally Posted by skiracer_blah View Post

Hey Guys,
I have an infant that just started to learn to crawl and will probably soon learn how to walk. I have Magnepan MMG's sitting on hardwood floors. I need to childproof them so the kid can't run into them and they tip over onto my kid.

I was thinking of placing some sort of heavy weight on top of the iron stands. If I do this, the approximate dimensions of the useable space the iron stands take up is approximately. 8" x 13" . I'm looking for ideas on what to use as weights or if you got any other ideas to childproof, i'd love to hear them....

The only thing I can think of is using a bumper plate weight from a gym set like this:

You actually have two concerns, damage to kids and damage to speakers. To prevent speakers from tipping, I used concrete blocks from Home Depot as I wanted something heavy that would stay in place. I places pieces of felt down first to protect the feet and floor then send the blocks across the feet, two/foot, four/speaker. I have MG-IIIa's which are a little bigger and when I tried rocking the frame back and forth it went nowhere.

Having a toddler run up and start pounding the speakers in time the music, or just pounding away for fun or in anger, will do your panels little good. I was lucky enough to have a place to keep the speakers in a different room, but also had them in storage for much of the kid's destructive years (well, at least in terms of physically running up and destroying them). Solutions I have seen are to tie together several child gates to make a barrier in front of them, using panels from a dog pen (18" to 24" high fence panels), a homemade fake wall made of 2x2's and acoustic cloth about 24" tall, or something similar that is fairly acoustically transparent (and is low enough to be out of direct line to ears/eyes) and provides a physical barrier in front of the speakers. Nothing is foolproof, natch. But, kids can be trained to keep away.

HTH - Don
post #2730 of 3544
Quote:
Originally Posted by Knight7m View Post

May I ask why subwoofer and not magnepan woofer ? l learned subwoofers sound fast than magenpan speakers, which the LFE might not synergy with other magnepan speakers.

For surrounds, is MG12 or 1.7 have better resolution than MMC 2?
And thank you.

Your 20's go deeper than any Magnepan woofer. They are very clear that it is a woofer, not a subwoofer. Subwoofers like my Rythmiks take over around 50 Hz and go below 20 Hz with a lot of power, integrate well with Magnepans due to their design, and offload the deepest bass from the panels. The panels distort quickly with large low-frequency signals and you give up dynamic range that could be used for the rest of the spectrum. Movies have explosions and low-frequency effects (the LFE) that are often louder and deeper than most music. NOTE: I have plenty of music that goes as deep and think a good sub is a great addition for movies and music!

If you are considering the CCR, I would probably consider the speaker-stand or a DWM with it as it only goes down to 200 Hz. I would prefer closer to 100 Hz in the center but have not heard a CCR setup so do not know of my own experience. My center is a CC3, rated to 80 Hz (same as my MC-1 surrounds and rears).

The right sub will integrate well with Magnepans, at least in my experience. It is critical to match the phase of the sub and main speakers at the crossover (an AVR will generally do that for you; Rythmik has a phase adjust knob, not just a switch, and other subs have electronic controls and room correction built-in). Rythmik uses a servo design to provide excellent time response. In my experience a sub that "rings" due to poor damping or amplifier control will not integrate well with panels (or any other speaker that has good bass). There are many other good subwoofer choices, of course.

The 1.7 is a significant step up from the MG12 and has more bass than the MMC2. I have not heard them all so cannot comment upon how they compare. My guess is the 1.7 and MMC2 would be pretty comparable from the low midrange up, given the difference in panel size and placement, and either better than the MG12. Surround channels in general have less bass and so do not require larger speakers though there are those who swear by their large surround speakers. I have always had smaller speakers for surrounds and rears so again cannot comment. It may be harder to set up a multiplicity of larger floor-standing dipoles, however, and all those floor-standing speakers take up a lot of floor space and may require significant room treatment.

You are welcome.

IMO! - Don
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