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In Reply to: RE: Says it better than I can............. posted by drlowmu on July 11, 2008 at 19:27:46
15" dual concentric, not specified as a "gold" but it wouldn't seem likely to be much different.
Dave
Follow Ups:
I read that the Westminister use the 3839W 15" Dual Concentric.
"Its better to have online friends than no friends at all."
Not much information on any differences between it and a Monitor Gold.
Dave
below
"Its better to have online friends than no friends at all."
That goes a long way to answering that question, but at the same time it leaves a fair bit unanswered. I see that the principal differences between the Monitor Gold and 3839 are the surround material and magnet material. Sort of like the difference between a 604-8G and 604-8K (although I think they share the surround). The 3839 does appear to be a direct descendant with few fundamental changes relative to the Monitor Gold. Am I wrong about that?
Dave
But I am not even conversant on the subject, really. I am simply in the research phase.
"In 1974 a radical approach to surround design was taken and the cone structures of the 15" and 12" completely redesigned for the HPD Series."
and
"A major redesign of the Monitor Gold led to the 'Monitor High Performance Dual' HPD Series. Power handling was improved considerably by using high temperature adhesives in specially set up Tannoy coil winding and heat treatment sections. Sensitivity was maintained at 92 dB for 1 Watt at 1 meter while moving cone masses increased to give the correct 'Q' values for a range of 5 cabinet models....
All units were 8 ohms and also supplied with crossover and terminal panel as kits for the professional market or home constructor. The crossover network is worthy of mention as there were some sophisticated circuits used for controlling both the level of energy from the HF unit and the degree of roll-off above 5 kHz. An autotransformer was used to match the relatively high impedance of the HF voice coil (10 Ohms resistive, approximately 18 Ohms above 1 kHz)."
Both of these predate the 3839 by my read of this.
David
"Its better to have online friends than no friends at all."
never having heard the 15s.
But, being an engineer there are three fundamental reasons to change designs: 1) the desire for "new and improved"; 2) to actually improve; 3) to cost-down the current range.
All of may define a new and diffreent sound, but the will certainly be in the "house sound" I would guess.
David
"Its better to have online friends than no friends at all."
Just as there were changes to the surround, cone, horn and magnet on the 604 throughout the development of it's various versions. Each is different from the other, but not fundamentally so (with the biggest difference probably coming with the CD horn on K and later models).
Anyway, I don't think it's entirely wrong based on the described progression from Gold to 3938 to assume that their sound and performance are roughly similar if not exactly so, any more than it is to refer to "604's" as opposed to 604B, 604E, 604-8K etc.
Dave
Cool read, thanks.
Jeff Medwin
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