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Multi-Way Conventional loudspeakers with crossovers

Magnepan 3.5R
Magnepan 3.5R
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Old 22nd February 2004, 06:36 PM   #1
lightfla is offline lightfla  United States
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Location: Fort Lauderdale
Default Magnepan 3.5R

I'm Looking for a pair of the 3.5R external crossovers. I own an excellent pair of speakers with crossovers in good working order and wish to have a second pair of XO for learning purposes in preparation to rebuild an external XO with reference parts. Therefore it is not required that they are in working order as long as they are complete with original parts. I am new to DIY and do not wish to ruin the crossovers i already own.

If anyone has suggestions for parts to use that are compatible with silver.. I would be most appreciative.

I also understand there are internal crossovers and wiring that can be upgraded. Suggestions welcome, but one step at a time.

I would also consider having a pair of custom reference quality XO made.

I am in Fort Lauderdale FL
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Old 22nd February 2004, 07:34 PM   #2
sreten is offline sreten  United Kingdom
Join Date: Nov 2003
Location: Brighton UK
I'm not intending to be negative but for a relatively old maggie
I'm sure there is already a wealth of modification information
for the 3.5R's posted on the web, you just have to find it.

When investigating the 1.6QR, sadly not available here,
I easily found details of structural modifications and
crossover quality upgrades.

You should be able to gain enough information to build a
reference quality external croosover without ever owning
the standard external crossover.

Or go active ...... the final solution......

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Old 22nd February 2004, 07:44 PM   #3
lightfla is offline lightfla  United States
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You are right. There is a wealth of information about the 1.6QR avail. Not so much about the 3.5R. This was my very first post. I daresay there may not be another. Its a turn off to folks like me who are relatively new to this and learning, to get a response like that to a very first post. Is this representative of the site?
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Old 23rd February 2004, 01:39 AM   #4
catapult is offline catapult
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Join Date: Dec 2002
Location: Planet Earth
Bill, I think you have taken offense where none was intended. sreten was trying to be helpful.

To answer your original question, the schematic for the 3.5 crossover is available.

3.5 XO

Pictures of mods are also available.

3.5 XO mods

These and much more are available at the Maggie Users Group.


If you really want to buy a complete crossover, the message board linked there would be the place to ask. Personally, I would start from scratch with the schematic.
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Old 23rd February 2004, 07:55 AM   #5
Hybrid fourdoor is offline Hybrid fourdoor  United States
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How do the 1.6's stack up? I have MMG, and maybe one day might upgrade to the 1.6's. Do they just have more bass or do they actually have a bigger sound?
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Old 23rd February 2004, 04:58 PM   #6
cowanrg is offline cowanrg  United States
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they have a much bigger sound. i havent specifically listened to the MMG's, but i have SMGc's as rears and my 1.6's blow them away with soundstaging.
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Old 8th June 2010, 04:35 PM   #7
MrAcoustat is offline MrAcoustat  Canada
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Yes they do, for four times the price THEY SHOULD but the mmg's are great little speakers in that price range, just try to find better GOOD LUCK.
Chord CPM-2600 amplifier - Chord One cd player - Acoustat 1+1 speakers -
Life without Acoustat is possible BUT senseless.
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Old 9th June 2010, 12:17 AM   #8
homebuilder is offline homebuilder  United States
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Default Maggie xo for 3.5

Welcome to the forum!

Sreten had a good suggestion you might want to consider as a step toward your goal of improving your 3.5's. You might want want to pick up an active crossover, and experiment with various crossover points and other parameters. Once you determine where they sound the best, you can focus your project on building the crossover around that knowledge.

I've owned that model, and other in the Magnepan line, and really enjoyed all of them. The best results I got from mine were with a DIY sub and active xo.

Good luck!
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