or Connect
AVS › AVS Forum › Audio › Speakers › The Official Magnepan Owners Thread
New Posts  All Forums:Forum Nav:

The Official Magnepan Owners Thread - Page 72

post #2131 of 3517
I don.t know what happened but the speakers changed according to the guy at the audio store they sat in the box for about six months in there warehouse with no heat before they put them on display. I saw them as they where bringing them into the show room and bought them before they unpacked them for 700.00 dollars they are missing the resistors thought .I thought the cold and not being played for a while might have stiffened up the panels so i cranked up the heat in my house and cranked up the volume for about five hours and finally they came alive nice speakers all is good except every so often I hear a slight buzz in one of the panels does this mean the wire is breaking and I will need a rebuild ?
post #2132 of 3517
Possibly. Listen very close and if you can pin point an exact spot, yes, the wire its separating, a fairly easy fix though. Have done it on mine, and was snap
post #2133 of 3517
At least one review says the 20.7, like the 3.7, is not bi-ampable. The product manual is still not up on their site, natch.
post #2134 of 3517
Help! I pulled out the side rail on my 1.7 and I cannot put it back on. I tried hamering it back with my hand but it would not stay on, how did you put it back on?
post #2135 of 3517
Check if the fabric is bunched up and/or staples sticking out otherwise the side will not go on cleanly. Of course, if you tried hammering before seeing what the problem was, the support board may be damaged and sticking out as well.
post #2136 of 3517
Quote:
Originally Posted by Tech HiFi View Post

Currently, I have the Wyred 4 Sound SX-1000 monos. Last night, I ordered a set of heavily modified Khartago monos from Klaus at Odyssey Audio. I'm also going to get a Parasound A-21. After letting all the amps break-in, I'm going to do my own $2500 amp shoot out. Am I missing any other contenders? Maybe the Hk 990 integrated that Stereophile just reviewed??? Anyone in the Hampton Roads area who wants to join in, I should be ready for some serious listening in early March.

Talked with Klaus and going with the Stratos instead. The Hk is out. Still struggling with the A21 vs. the Emotiva.
post #2137 of 3517
Quick question: I have the opportunity to buy some magnepan SMGs for 150. I currently have a Yamaha htr 5760, 95 wpc. It can power 4 ohm which I think the smgs are. Anyone have any experience with SMGs or similar speakers powered by a 100ish wpc amp.
Thanks(sorry if this is the wrong thread to ask this in)
post #2138 of 3517
Quote:
Originally Posted by jham1496 View Post

Quick question: I have the opportunity to buy some magnepan SMGs for 150. I currently have a Yamaha htr 5760, 95 wpc. It can power 4 ohm which I think the smgs are. Anyone have any experience with SMGs or similar speakers powered by a 100ish wpc amp.
Thanks(sorry if this is the wrong thread to ask this in)

I use to own a pair of the original SMGs back in the early 80's. While they did OK using a receiver, the sound improved significantly when I got a separate high current amp (Hafler DH200; rated 125wpc@8ohm, 250wpc@4ohm, 500 peak@2ohm).
post #2139 of 3517
Right thread, good question. +1 that your AVR should be able to handle them and you can always upgrade later.
post #2140 of 3517
Quote:
Originally Posted by DonH50 View Post

Right thread, good question. +1 that your AVR should be able to handle them and you can always upgrade later.

+2 - I drive MMG's with a Marantz with similar power.

Don't get sucked into the high current mem.
post #2141 of 3517
Well, after 24 years my Nakamichi PA7 appears to be biting the dust. I have no complaints. It's been a great amp. But today, it started cutting out at less than its usual peak output. First the left channel would shut down and then the right started cutting out. In the past, the clipping lights might blink for peaks but the amp wouldn't cut out. Today, it was cutting out for maybe 10-15 seconds at a time. Then both channels would fail simultaneously. Even before shutdown the sound was distorted in the left channel.

So, I guess I have a few options for my MG3.6's......
  1. Repair/Upgrade the PA7. At one time there were a few shops that would replace the capacitors and output transistors for a reasonable cost. But I fear the PA7 may be too old and that option may be gone.
  2. Replacement
  • Parasound Halo A21 $2,300
  • Adcom 555se $1,300
  • Emotiva XPA2 $800
  • Emotiva XPA1 Pair $2,000

I'd really rather not spend the money for the Halo or XPA1 and I'd rather not have two mono amps to clutter up the room. But I'm worried that the Adcom or the XPA2 may not have the power supply to handle 3.6's. The Nak PA7 has a 1200VA toroid and 130,00uF of filter capacitance and is rated at 200WPC @ 8 Ohms and 330WPC @ 4 Ohms. It struggled with my Maggies in my 6,000 Cu Ft room. The XPA2 seems to have the power with 500W into 4 Ohms and it has a hefty 1200VA transformer. But the filter capacitance is a puny 45,000 uF.

So, has anyone had experience with any of the amps I mentioned? Any other amps in that price range that I'm missing? Opinions?
post #2142 of 3517
I am using an XPA-2 to drive my MG-IIIa's and it is doing fine albeit in a much smaller room. I have to really crank it to get more than the single ON LEDs to flicker. How far are you from the speakers? Askde: 45,000 uF is not "puny" though of course more charge storage is almost always better.

My last experience with Adcom was ages ago. Good sound, ran hot, not terribly reliable. No idea what the newer stuff is like.

Parasound (and John Curl) has a good rep but at 3x the cost of an XPA-2 might be hard to justify.

There are a few other amps in that range, like the Outlaw amps, that may be worth considering.
post #2143 of 3517
The Nakamichi PA7 is a classic. It would be a shame not to repair and have it returned to serve another 24 yrs.
post #2144 of 3517
No kidding.
Have it repaired, they aren't exactly one-off parts in there, easy to come by.
With that much capacitance, it will likely be exceedingly expensive, but you'll get another 20+ years out of it.
post #2145 of 3517
Today's amps are just better. I am in that same situation and have tried a few newer amps in my rig and they sound better (IMO).

I would suggest going used (something not more than five years old) high power or class D (Wyred 4 Sound perhaps?). The Parasound is a very good amp for its price. Look around and take your time.
post #2146 of 3517
I focused on the replacement amps since that was the question.

The PA7 is a classic, no doubt. One of the few Nelson Pass-designed Stasis amps around. Using a little Google, I see a few for sale in the $1k - $1.5k range, and service manuals are available online.

I have friends who repair vintage gear with some success, though some parts can be very difficult to find and they end up doing some redesign along the way for new parts (e.g. new output devices with different biasing requirements). My own experiences have been mixed; it is very rewarding when a vintage piece comes back to life and sounds good, a bit of a let-down when you discover it does not sound as good as much less expensive modern gear, and devastating when a week or month or two later something else goes bad and takes out some of the new parts, too.

If you are tech-savvy, know someone who is, or can send it to a competent tech for a check-up, it's probably worth seeing if it is something simple/cheap to repair. If not, then you'll have a decision to make...

I struggled mightily with the repair or buy decision when I re-started my system a few years ago. Ultimately, I went with new gear and have been happy despite it being stuff like Emotiva instead of Audio Research (the latter is now far out of my price range). Looking at my old gear and realizig how much effort it would take to bring it back to life with no certainty it would sound better or last longer than newer, cheaper gear was a factor.
post #2147 of 3517
I rebuillt my Denon POA4400 mono amps, also Nelson Pass designs. I absolutely loved them, and after recapping, they sounded better than ever had previously (under my ownership, anyways). Luckily, my transformers were in fine shape (2 of those would have likely put me out of my comfort range on the price) Definitely wasn't cheap, with 8x 8200uF caps, but worth every penny.

Now they have been rotated out of service though, as I have started using a dual-mono integrated tube amp.
Might be seeing them soon in the classified section

post #2148 of 3517
Quote:
Originally Posted by DonH50 View Post

I am using an XPA-2 to drive my MG-IIIa's and it is doing fine albeit in a much smaller room. I have to really crank it to get more than the single ON LEDs to flicker. How far are you from the speakers? Askde: 45,000 uF is not "puny" though of course more charge storage is almost always better.

My last experience with Adcom was ages ago. Good sound, ran hot, not terribly reliable. No idea what the newer stuff is like.

Parasound (and John Curl) has a good rep but at 3x the cost of an XPA-2 might be hard to justify.

There are a few other amps in that range, like the Outlaw amps, that may be worth considering.

Hi Don, and thanks for the response. I'm usually about 14' from the front speakers. I will sometimes move them into a near field setup where they are about half that distance. The room is roughly 18' X 20' with a 17' ceiling.

The XPA2 is looking like the winner at this point. Adcom stopped making the GFA5802 that would have been a contender. I've checked out all the "old brands like B&K, NAD, Anthem. They have either moved on to multichannel amps or don't make anything in the power range that would handle 3.6's.

The Parasound Halo amp appeals not only for the build quality but the fact that John Curl's name is on it. He and Nelson Pass were arguably the two best designers of our generation. And I've never owned a John Curl designed amp. But $2,300 is hard to justify when the XPA1 offers more power at a lower cost.

As for snob appeal, that's not even a consideration. I'm not from the fine corinthian leather with a hint of blackberry and almond after taste school of amp sampling. I like the fact that Emotiva puts full equipment measurements for their products out there for all to see. And I believe that as far as an amp is concerned, if two amps are delivering adequate power and current over a reasonable bandwidth with reasonable distortion and low output impedance, I can't hear the difference. And if I can't hear it, it doesn't matter. So build quality and price becomes the primary issue. And I think Emotiva represents damned good value on those scores.

So, I think I'm down to the XPA2 or a pair of XPA1's. Arrrgh, don't wanna spend $2K and don't want 2 giant black boxes. But the XPA1 is so tempting.

And oh yeah, I'm not tech savvy, more like tech dangerous. I'd definitely be paying someone to rebuild the PA7 if I go that direction.
post #2149 of 3517
A friend bought XPA-1's to power his B&W 803Ds. I am pretty sure I hate him... I have read on here that the XPA-1 is a step up from the XPA-2, but like you and despite having bi-amped and/or used monoblocks (sometimes both) to drive my Maggies most of their life I just couldn't justify the price now (older and broker, no wiser ). I debated long and hard during their sale a couple of years ago but went with the XPA-2 instead of a pair of XPA-1's and have been quite happy. I can still lust after a new pair of Brystons or whatever but the price of new gear put me into shock.

Emotiva's construction is average; decent, but not up to the standards of amps 2x or more the price. Catch is, you have to pay 2x or more the price... It is as well constructed as most any comparable amp I have owned/seen (e.g. my old modified Hafler DH200, which IMO the Emotiva blows away). It won't match the old Krell or ML monoblocks that passed through my system at one time for build quality, but I am honestly not sure I'd hear the difference. I think Emotiva's "value" rating is through the roof.

You can look at one of the sound pressure calculators, but I have a feeling that if the PA7 has enough power, the XPA-2 will give you that and a little more despite the lower capacitance.

If you have a local tech it's not a bad idea to have him (her, it, whatever) look at the PA7 to see if it's a simple fix.
post #2150 of 3517
post #2151 of 3517
Quote:
Originally Posted by Saturn94 View Post


I use to own a pair of the original SMGs back in the early 80's. While they did OK using a receiver, the sound improved significantly when I got a separate high current amp (Hafler DH200; rated 125wpc@8ohm, 250wpc@4ohm, 500 peak@2ohm).

Thanks. I'll power them with my avr then upgrade if needed
post #2152 of 3517
I am willing to bet I can find a "bad service thread" on any manufacturer in existence. I have not had any problems with Emotiva. YMMV - Don

p.s. Actually, the whole amp discussion should probably be in the amp forum instead of here as it is wending its way off-topic w.r.t. Magnepan.
post #2153 of 3517
I had 3.6r's in a 23 x 17 x 10 room driven with a XPA 2. No problems at all. The Emotiva could easily drive them in full range mode with no audible distortion at very dynamic levels.

David

Quote:
Originally Posted by Magnefied View Post

Well, after 24 years my Nakamichi PA7 appears to be biting the dust. I have no complaints. It's been a great amp. But today, it started cutting out at less than its usual peak output. First the left channel would shut down and then the right started cutting out. In the past, the clipping lights might blink for peaks but the amp wouldn't cut out. Today, it was cutting out for maybe 10-15 seconds at a time. Then both channels would fail simultaneously. Even before shutdown the sound was distorted in the left channel.

So, I guess I have a few options for my MG3.6's......
  1. Repair/Upgrade the PA7. At one time there were a few shops that would replace the capacitors and output transistors for a reasonable cost. But I fear the PA7 may be too old and that option may be gone.
  2. Replacement
  • Parasound Halo A21 $2,300
  • Adcom 555se $1,300
  • Emotiva XPA2 $800
  • Emotiva XPA1 Pair $2,000

I'd really rather not spend the money for the Halo or XPA1 and I'd rather not have two mono amps to clutter up the room. But I'm worried that the Adcom or the XPA2 may not have the power supply to handle 3.6's. The Nak PA7 has a 1200VA toroid and 130,00uF of filter capacitance and is rated at 200WPC @ 8 Ohms and 330WPC @ 4 Ohms. It struggled with my Maggies in my 6,000 Cu Ft room. The XPA2 seems to have the power with 500W into 4 Ohms and it has a hefty 1200VA transformer. But the filter capacitance is a puny 45,000 uF.

So, has anyone had experience with any of the amps I mentioned? Any other amps in that price range that I'm missing? Opinions?
post #2154 of 3517
Quote:
Originally Posted by DonH50 View Post

I am willing to bet I can find a "bad service thread" on any manufacturer in existence. I have not had any problems with Emotiva. YMMV - Don

p.s. Actually, the whole amp discussion should probably be in the amp forum instead of here as it is wending its way off-topic w.r.t. Magnepan.

Not necessarily true. There are many amp manufacturers which have received few gripes. The OP seemed to have some difficulty deciding and I remembered the thread. I have read many heated comments pro and con about Emotiva. I believe that the OP should be aware of all of them.

I have no position in this discussion and you are correct that it belongs elsewhere.
post #2155 of 3517
Quote:
Originally Posted by robertawillisjr View Post

I have no position in this discussion and you are correct that it belongs elsewhere.

No he isn't and neither are you.

I don't care about generic amp discussions with a bunch of people who have never even heard a 3.X series Maggie inserting their preference for countless amps I wouldn't care about based on a 12 X 12 room and a Klipsch surround sound setup.

I posed the question here to specifically solicit input from owners of Maggies who have direct experience with my speaker's impedance curve, hopefully in a room of similar volume.
post #2156 of 3517
Quote:
Originally Posted by Magnefied View Post

No he isn't and neither are you.

I don't care about generic amp discussions with a bunch of people who have never even heard a 3.X series Maggie inserting their preference for countless amps I wouldn't care about based on a 12 X 12 room and a Klipsch surround sound setup.

I posed the question here to specifically solicit input from owners of Maggies who have direct experience with my speaker's impedance curve, hopefully in a room of similar volume.

+1 damn right
post #2157 of 3517
Quote:
Originally Posted by robertawillisjr View Post

http://www.martinloganowners.com/for...956#post144956

Dunno dude, the cheap piece of asian crap Nakamichi PA7 I'm looking to replace lasted me 24 years. 90% of consumer electronics are made in Asia today. That includes all Apple products. I'm not sure you can avoid asian manufacturing unless like the buffoon in that thread you're willing to pay for the inefficiency and profits of a boutique outfit like Krell. I am not!. Like I said before, I'm in the camp that believes if two amps meet certain basic electrical criteria 99.99% of the population won't be able to tell them apart......audibly. Now visually, that very expensive 25 lb milled faceplate will be a dead giveaway. But it won't do a damned thing for the sound.
post #2158 of 3517
Quote:
Originally Posted by bukiwhitey View Post

I had 3.6r's in a 23 x 17 x 10 room driven with a XPA 2. No problems at all. The Emotiva could easily drive them in full range mode with no audible distortion at very dynamic levels.

David

David,

Thanks, that helps. Your room volume is about 50% smaller but I'm thinking the XPA2 is looking like my best option. Decisions decisions.
post #2159 of 3517
Thread Starter 
I drove my old 3.6R's with an NAD S300 for a while and it clipped quite a bit. That amp was rated at 100wpc into 8ohms and 200wpc into 4ohms. It was a pretty nice piece but wasn't enough for my 3.6R's. I later used a Musical Fidelity TriVista for a number of years that was rated at 350wpc into 8ohms and 600wpc into 4ohms. The difference was huge. The bass improved dramatically, clipping stopped and the speakers just came alive. I know those aren't good descriptions but it really made a huge difference.

I moved and had to sell the 3.6R's (didn't have a big enough room) but later moved again and bought some 1.6's and drove them with a Parasound A21 and a Conrad Johnson LS17 Premier preamp. I bought another MF Trivista 300 to compare and preferred the A21/CJ combo to it FWIW. I have no complaints with the A21. It is a solid amp.

When I get back to the states, I plan on getting some 3.7's and a pair of JC1's and a nice tube preamp. Maybe an Audio Research Ref 3 or a Modwright. I really like a tube pre with a solid state amp for Mags. The sound is almost magical.

Anyway, I really think that Mags need all the power they can get. If you plan on driving them with a receiver, better get a lot of spare fuses.
post #2160 of 3517
The gentleman was highlighting a potential issue with Emotiva, I have no problem with that. I still think they are a great value, and admittedly are not the best-built on the planet. Nor do they cost more than $10k, or even $1k, at least for the XPA-2.

One of the interesting things about Maggies, or any planers, is that the panel is subject to deflection modes or "ripples" when playing. Controlling those takes a pretty low output impedance and makes Maggies a little harder to drive than their relatively flat (no, it's not purely resistive, but pretty close) impedance curve would imply. I have almost always found it takes a real beast of a tube amp to even approach the bass from a SS amp. Sad but true, at least to me, and I had a nice ARC/Counterpoint bi-amp set-up before getting my Emotiva. I still miss that gorgeous tube midrange, but the bass is a lot tighter with my new amp.

I am surprised the NAD wasn't enough, however... Of course, since they are so inefficient, it takes a lot of power for them to sing loudly. The bad thing is they are so clean that you do not realize how loud they are playing until somebody tries to say something...
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Speakers
AVS › AVS Forum › Audio › Speakers › The Official Magnepan Owners Thread