|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
72.87.78.97
In Reply to: RE: There are several pairs of them here in Canberra, very easy to drive and sensitive too! posted by Timbo in Oz on September 12, 2008 at 17:04:57
Hi, but it's "John."
A problem, having a New Testament name followed by a kind-of New Testament name.
Anyway, I always thought that Duntechs were better than Dunlavys; I think he was trying to prove that brilliant crossover design could triumph over cheap drivers, and I think he failed.
RenAudio:
APPLICATION INFORMATION
Nominal Power Handling (RMS) P 200 W
Transient Power - 10 ms 1,000 W
Nominal Impedance Z 8 Ω
Sensitivity 1W/1M 90.5 dB
Frequency Response 450 – 6,000 Hz
Resonant Frequency 340 Hz
VOICE COIL
Voice Coil Diameter φ 55 mm (2.17”
Voice Coil Height 7 mm (0.28")
Voice Coil Former aluminum
Voice Coil Wire hexagonal shaped aluminum
Number of Layers 2
DC Resistance RE 5.2 Ω
Voice Coil Inductance @ 1 kHz LBM 0.19 mH
MAGNET SYSTEM
Magnet System Type ferrite, chambered
BL Product BXL 6.4 NA
OPERATIONAL PARAMETERS
Mechanical Q Factor QMS 0.90
Electrical Q Factor QES 0.66
Total Q Factor Q/T 0.39
Moving Mass MMS 3.2 g
Cone / Dome Material hand treated fabric
Effective Piston Area S 30.0 cm2
Dimensions Faceplate Diameter
Faceplate Thickness
Cutout
Mounting Depth 140mm (5.51””)
3.5mm (0.14”)
107mm (4.21”)
69mm (2.72”)
Net Weight 1.3 kg (2.95 lbs)
http://www.renaudio.com/rawdrivers/midrangesandmidbasses.htm
Personally, my attitude is that time is so "expensive," if I was to get back into DIY I'd not mess with affordable drivers, in this case I'd go straight to ATC's 3-inch dome midrange. Or even a Raven ribbon, except even the biggest of those might not go down far enough to mate with a woofer large enough to give solid bass.
So I leave it to the pros.
JM
Follow Ups:
Hi John:
I tend to agree that Duntechs are slightly better than DALs, model for model. However, I never heard them side by side. And I happen to own Duntechs, so, pride of ownership?
Based upon listening to DALs at dealers and several times at the CES (where John Dunlavy himself set them up), my impression has been that the Duntechs are more open sounding (surprisingly close to a monitor for a large floor standing cabinet) and have even lower colorations overlaid on the music. This could be respectively because of the stepped back baffle design on the Duntechs (more expensive to build and I do believe John became more cost conscious with his DALs) and higher quality drivers.
However, this is not intended as any sort of put down for the DAL speakers. I still consider them to be among the better designs and they too can offer some exceptional bargains on the used market.
Hi-
I try to avoid taking sides, let alone picking fights.
But I always thought it was no contest between the old OZ company and the new US company. I don't know whether it was a mission statement thing or a business plan thing, but I certainly gathered that Mr. Dunlavy on several occasions stated that if you got the crossover "right," driver quality and cabinet complexity were substantially less important. It almost seemed to be a chip on the shoulder thing, and my policy on those has always been to steer clear rather than to engage.
And it's not just my opinion on the relative merits. Sony Music Mastering continued privately to import Duntechs, despite the availability of Dunlavys on the new and used markets. And mastering engineers such as Scott Hull don't go chasing after old Dunlavys, they go chasing after old Duntechs. I don't think it's just nostalgia.
As of a couple of years ago, Duntech in Australia was willing to send speakers over to private individuals, cash in advance, of course. I think that privately importing a new pair of 2001s is a very valid solution.
Cheers,
JM
I've filed some pages and bookmarked the site!
I've never heard a bad Dunlavy design, and his MC head amp was very good!
WarmestTimbo in Oz
The Skyptical Mensurer and Audio ScroungerAnd gladly would he learn and gladly teach - Chaucer. ;-)!
'Still not saluting.'
http://www.theanalogdept.com/tim_bailey.htm
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: