MAGNEPAN CHAT ROOM

MaggiesAndCats · « **Reply #80 on:** 20 Mar 2011, 03:37 pm »

I have an old pair of MGIII's that need to have the panels rebuilt and the ribbons replaced. I have another pair I bought new "way back when" and had factory rebuilt a couple of years ago and thoroughly enjoy. With the changes in the MG3.7, would it be possible (or advisable) to have them factory rebuilt with ribbon bass and midrange? I am biamping with an electronic crossover and can change crossover settings if needed. I have been toying with the idea of rebuilding the panels with supplies from Magnepan, and am also wondering if Magnepan would provide the supplies - ribbon wires, etc - and instructions to rebuild the panels as ribbons.

Thanks - thanks for providing this opportunity to comunicate with Magnepan!

Steve

James Tanner · « **Reply #81 on:** 21 Mar 2011, 03:30 pm »

Hi Steve,

Boy this sounds like a major discussion point so I would recommend giving Wendell a call at Magnepan.

I know at Bryston we always have difficulty with upgrades because the cost of the upgrade after a long period of time is more costly that selling the older unit and investing that money in a new product. The other problem is you do not want older cosmetic product looking like new product because it causes serious confusion in the marketplace.

Anyway Wendell is more than happy to speak with customers one on one so please feel free to call him directly at Magnepan.

james

BrysTony · « **Reply #82 on:** 21 Mar 2011, 04:31 pm »

Quote from: MaggiesAndCats on 20 Mar 2011, 03:37 pm

I have an old pair of MGIII's that need to have the panels rebuilt and the ribbons replaced. I have another pair I bought new "way back when" and had factory rebuilt a couple of years ago and thoroughly enjoy. With the changes in the MG3.7, would it be possible (or advisable) to have them factory rebuilt with ribbon bass and midrange? I am biamping with an electronic crossover and can change crossover settings if needed. I have been toying with the idea of rebuilding the panels with supplies from Magnepan, and am also wondering if Magnepan would provide the supplies - ribbon wires, etc - and instructions to rebuild the panels as ribbons.

Thanks - thanks for providing this opportunity to comunicate with Magnepan!

Steve

Welcome to the forum. I am curious about how you arrived at your forum name - MaggiesAndCats. Must be a story there (maybe an expensive story?)

Tony

andyr · « **Reply #83 on:** 21 Mar 2011, 07:20 pm »

Quote from: MaggiesAndCats on 20 Mar 2011, 03:37 pm

I have an old pair of MGIII's that need to have the panels rebuilt and the ribbons replaced. I have another pair I bought new "way back when" and had factory rebuilt a couple of years ago and thoroughly enjoy. With the changes in the MG3.7, would it be possible (or advisable) to have them factory rebuilt with ribbon bass and midrange? I am biamping with an electronic crossover and can change crossover settings if needed. I have been toying with the idea of rebuilding the panels with supplies from Magnepan, and am also wondering if Magnepan would provide the supplies - ribbon wires, etc - and instructions to rebuild the panels as ribbons.

Steve

Steve, I believe you will find Magnepan will not supply you with the ribbon-wire and will use round-wire if you send the III panels back to them for a re-wire. There may be a technical issue for this decision (eg. different magnet spacing?) but I suggest more probably, as James said, they do not want an older product looking/sounding like new product.

Regards,

Andy

smoke · « **Reply #84 on:** 21 Mar 2011, 10:11 pm »

hey tony - have you had a chance to hear the 3.7s yet?

smoke

BrysTony · « **Reply #85 on:** 21 Mar 2011, 10:41 pm »

Quote from: smoke on 21 Mar 2011, 10:11 pm

hey tony - have you had a chance to hear the 3.7s yet?

smoke

I have not had a chance to get to Dallas yet. Should happen before the end of next week.

Tony

MaggiesAndCats · « **Reply #86 on:** 24 Mar 2011, 01:40 am »

Quote from: BrysTony on 21 Mar 2011, 04:31 pm

Welcome to the forum. I am curious about how you arrived at your forum name - MaggiesAndCats. Must be a story there (maybe an expensive story?)

Tony

Thanks for the welcome Tony. I guess the story would be that I've owned Magnepan "scratching posts" for over 25 years, with 3 pair set up now, and haven't had an issue with cat attacks through 4 different cats. Even with one cat who destroyed the foam grills on my JBL's and others who have ripped away at fabric upholstered furniture. Maybe it's the cat size Guillotine I keep in the sound room...

Regards,

Steve

Roger Gustavsson · « **Reply #87 on:** 25 Mar 2011, 02:26 pm »

Quote from: andyr on 21 Mar 2011, 07:20 pm

Steve, I believe you will find Magnepan will not supply you with the ribbon-wire and will use round-wire if you send the III panels back to them for a re-wire. There may be a technical issue for this decision (eg. different magnet spacing?) but I suggest more probably, as James said, they do not want an older product looking/sounding like new product.

Regards,

Andy

Hi,
Magnepan will not upgrade your speakers. They are only willing to restore them to their original specification. In some casees that is not possible, like with my old Tympanis.

Roger

bibo01 · « **Reply #88 on:** 8 Apr 2011, 05:18 pm »

Do you think that the series crossover on 3.7 is somehow similar to the old SMG's one treating the three sections as a single driver?

Had a chance to hear 3.7 yet?

Thanks

James Tanner · « **Reply #89 on:** 8 Apr 2011, 06:22 pm »

Quote from: bibo01 on 8 Apr 2011, 05:18 pm

Do you think that the series crossover on 3.7 is somehow similar to the old SMG's one treating the three sections as a single driver?

Had a chance to hear 3.7 yet?

Thanks

Hi bibo,

Wendell tells me no the 3.7 and SMG don't have all that much in common.

Still have them on order but apparently they are very back ordered.

james

grantv · « **Reply #90 on:** 12 Apr 2011, 04:09 pm »

What are Magnepan's top 4 best selling models? Thanks again for the line of communication.

James Tanner · « **Reply #91 on:** 12 Apr 2011, 04:44 pm »

Quote from: grantv on 12 Apr 2011, 04:09 pm

What are Magnepan's top 4 best selling models? Thanks again for the line of communication.

Hi Grantv

It follows the price points. MMMGs outnumber 3.7s, etc.

james

Emsquare · « **Reply #92 on:** 12 Apr 2011, 10:31 pm »

I have a question or two that I have been curious about for some time so I thought that I would give it a try...

I have a set of Magnepan 2.6's that have been just wonderful. I have bypassed the internal crossover for use with a Marchand electronic crossover set up. Although I have been very happy with the Linkwitz-Riley filters I am interested in trying to emulate the stock passive crossover slopes on an electronic crossover. What filter types, slopes and frequencies would I use to do that?

James Tanner · « **Reply #93 on:** 12 Apr 2011, 10:45 pm »

Quote from: Emsquare on 12 Apr 2011, 10:31 pm

I have a question or two that I have been curious about for some time so I thought that I would give it a try...

I have a set of Magnepan 2.6's that have been just wonderful. I have bypassed the internal crossover for use with a Marchand electronic crossover set up. Although I have been very happy with the Linkwitz-Riley filters I am interested in trying to emulate the stock passive crossover slopes on an electronic crossover. What filter types, slopes and frequencies would I use to do that?

Hi

The passive networks are Butterworth filters and depending on the speaker can be 1st 2nd or 3rd order slopes.

The Bryston 10B electronic crossover uses the same type of filters and slopes on the 10B Sub and 10B Standard versions. The 10B also allows you to stagger the lowpass and high pass sections which is what the Magnepan requires.

James

Emsquare · « **Reply #94 on:** 14 Apr 2011, 10:05 pm »

Quote from: James Tanner on 12 Apr 2011, 10:45 pm

Hi

The passive networks are Butterworth filters and depending on the speaker can be 1st 2nd or 3rd order slopes.

The Bryston 10B electronic crossover uses the same type of filters and slopes on the 10B Sub and 10B Standard versions. The 10B also allows you to stagger the lowpass and high pass sections which is what the Magnepan requires.

James

James,

Thanks for your thoughts on the subject. Let me submit this for consideration as I cannot really tell much about the tweeter filter...

http://www.integracoustics.com/MUG/MUG/tweaks/mg2.6xo.gif

The bass crossover appears to be a rather straight forward 18 db filter. But the ribbon tweeter... ??? ... Yaaa, allrighty then. Apparently there was a change of the ribbon at some point as the DCR for the pair that I have is about 3.4 Ohms instead of the 1.45 depicted in the schematic. So is that still a Butterworth? If it is some sort of Quasi-something, then what? I cannot tell what I am looking at.

James Tanner · « **Reply #95 on:** 15 Apr 2011, 02:45 pm »

Hi Emsquare.

Yes some of the passive crossovers were 'quasi' on the highpass section. So the slope would start out a 6dB per octave for the first octave and then switch to a much faster slope beyond that point.

The 10B allows you to adjust the crossover points in 10Hz steps so you can adjust the integration of the bass to mid section quite easily depending on what sounds best.

james

Emsquare · « **Reply #96 on:** 17 Apr 2011, 07:12 pm »

Quote from: James Tanner on 15 Apr 2011, 02:45 pm

Hi Emsquare.

Yes some of the passive crossovers were 'quasi' on the highpass section. So the slope would start out a 6dB per octave for the first octave and then switch to a much faster slope beyond that point.

The 10B allows you to adjust the crossover points in 10Hz steps so you can adjust the integration of the bass to mid section quite easily depending on what sounds best.

james

Again, thank you, James. The Bryston should be an excellent choice for this.

I've been trying to gather some more substantial information on the 2.6 for those who may wish to know at a later time. IMHO, these are a spectacular performing speaker in a smaller or mid sized room. Direct amplification by means of an electronic crossover is quite remarkable with the 2.6. I would understand if Magnepan wouldn't want to touch this question because the speaker wasn't built for this. Why volunteer for that potential headache if a user manages to damage their speaker by disassembling parts of it? Still, I can't help but be curious. Eventually I'll figure it out.

Hasse · « **Reply #97 on:** 26 Apr 2011, 07:52 pm »

If memory serves Magnepan does not ship out glue to customers during the winter season. Considering the delam issue, does this mean that cold temperature affect the longevity of the speakers and that freshly made panels (3.7s) will have a safer trip to europe in the summertime?

James Tanner · « **Reply #98 on:** 26 Apr 2011, 11:04 pm »

Quote from: Hasse on 26 Apr 2011, 07:52 pm

If memory serves Magnepan does not ship out glue to customers during the winter season. Considering the delam issue, does this mean that cold temperature affect the longevity of the speakers and that freshly made panels (3.7s) will have a safer trip to europe in the summertime?

The only risk to shipping 3.7s in the winter is if the glue isn't dry.

Liquid glue can freeze. Dried of cured glue is a solid and can't freeze

Wendell

Hasse · « **Reply #99 on:** 27 Apr 2011, 06:07 pm »

Quote from: James Tanner on 26 Apr 2011, 11:04 pm

The only risk to shipping 3.7s in the winter is if the glue isn't dry.

Liquid glue can freeze. Dried of cured glue is a solid and can't freeze

Wendell

Thanks Wendell and James. I´m looking forward to receive my 3.7s in august

. (bought my current 3.6s in 2000)