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In Reply to: RE: rebuilt tympani posted by stansnark on February 11, 2015 at 07:53:22
Magnepan will charge $2300 for rebuilding all drivers and new socks plus some labour and shipping. A seller will certainly have this cost covered. I would say from $3000 and upwards for a perfect set of Tympani IVa. If the work has been done outside the factory, price will be lower. I paid $1800 for mine.
Follow Ups:
thanks for the quick reply. they are still at the factory waiting for me. I was wondering if I should sell or keep them. do you know how they would compare to the 20.7 if I do the neo-8 midrange mod and bi-amp with an SET ?
To my way of thinking, there is at least 1 big advantage of T-IVas over 20.Xs - the ribbon sits in a separate frame. This means when the bass is really pumping ... vibrations produced in the bass frame to not shake the ribbon cages.
There may be a second - as the mylar drivers on a 20.X are hidden behind the pole pieces, we don't know whether this is also true for the 20.X ... but T-IVas have the mid on a completely separate sheet of mylar from the bass panel ... so no IMD.
Yes, you've paid $2,200 to have your T-IVas rebuilt but, given the price for 20.7s, you can do a helluva lot to improve them (like Neo8s for the mids & bi-amping) and still spend a lot less than what 20.7s cost. And with Neo8s and bi-amping, I suspect you would end up with a better speaker! :-))
Re. bi-amping ... you don't just " bi-amp with a SET ". In addition to a SET for the mids & ribbons (which would have to be a pretty powerful SET!), you would need:
1. a powerful ss amp for the bass panels - something like a 1KW W4S.
2. an active XO to replace the outboard passive bass/mid XO. If you get a DSP unit like, say, miniDSP or DEQX, you can get room correction too, in addition to bass LP and mid HP filters.
Good luck,
Andy
I already have a krell ksa-250 and a krell 402e in addition to se-811 so I think I'm ok with amps. I was told by another tympani owner that the marchand xm-26 crossover was the way to go, and bi-amping and stands will really improve the midrange. I did listen to the 20.7's today.
I've used a comparable analogue 3-way active XO for the last 15 years but am moving across to a digital active XO because of a change I am making to my system (adding some subs). The advantage of a DSP unit is that you get room correction as well as the XO filters ... analogue XOs only give you the filters.
Regards,
Andy
Difficult question. I have no experience of the 20.7, few have. 20-series vs. Tympanis? I know a person who have both, 20.1 and Tympani IV. Sure the 20-series is more refined but the Tympani can be more convincing in bass performance. Now, quite a few Dollars separate 20.7 and T-IVa. There is a lot that can be done to the Tympanis for that kind of money.
I am in the process of rebuildning my T-IVa. The midrange drivers have been rebuilt with foil conductors (same as used in the 20-series) and I intend to use the drivers in different baffles/frames, everything more tightly packed together and the mid/tweeters on a separate baffle decoupled from the basses. When finished, I will present my project.
I heard the 20.7's today driven by a $30,000 boulder.soundstage was HUGE, even compared to the tympani's. resolution, dynamics and cohesiveness were much better than the tympani's, but there was a slight graininess that seemed to overlay everything. could that be because the 300 wpc boulder amp was still warming up ?
All of that very much depends on the type of music you would most often listen to. If 'Classical Music' be one's thing, listening to big Mahler Symphonies vs. Haydn String Quartets requires other justifications/considerations.
Before running around like a chicken without a head, you'd have to be aware of the performance of a IV-A driven by amplifiers similar to those it was designed to be used with sounds to YOUR ears and in Your listening room.
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