128x128

bdp24

Responses from bdp24

MAC Autoformers?
I posted this on the thread Roger (ramtubes) started to discuss transformers, but thought I would do it here as well.Roger gave a 90 minute talk on tube amp design at the 2015 Burning Amp Festival. If you own a tube amp, or are thinking of getting... 
Best audio companies and dealers
My first high end dealer, Walter Davies (in ’72 at Audio Arts in Livermore, CA), now known for his fantastic LAST line of record/stylus/tape preservative products.Brooks Berdan (R.I.P.) and his widow Sheila/Brooks Berdan, Ltd.Brooks’s son Brian, n... 
Autoformers, The Benefits in matching amp to speaker
Roger, It’s great to have you contributing here on AudiogoN. I really miss your AudioCircle Forum! We met twice when you came to Brooks Berdan’s shop in Monrovia to give talks. The first time, I was the long-hair who asked you why you recommended ... 
Autoformers, The Benefits in matching amp to speaker
realdeal, you're embarrassing yourself. 
Autoformers, The Benefits in matching amp to speaker
There is a current thread here on AudiogoN from a guy who took two pair of LFT-8b's and "stacked" them. Each 8b speaker is comprised of a 1' w x 4' h panel containing two LFT "midrange" drivers (180Hz-10kHz) and one ribbon tweeter (10kHz up), and ... 
Autoformers, The Benefits in matching amp to speaker
Note to people who love the sound of both magnetic-planar loudspeakers and tube amps: the Eminent Technology LFT-8b is a much better candidate for use with tube amps (especially OTL’s) than are Magneplanars. I love and have owned three pair of Mag... 
Autoformers, The Benefits in matching amp to speaker
Damn, this is great! For those in the San Francisco Bay Area, Roger Modjeski (RAM Tubes, Music Reference) teaches a course in amplifier design at The Berkeley Hi Fi School. You can build your own amp in the class, any kind you want. My home town i... 
Solidsteel Racks
I have the old Model 44 Solid Steel rack, which was later renamed the 5.4. Those were the Solid Steel racks, long-ago discontinued, with shelves that each sat on three aluminum cones, the tips of which sat in little wells in the cross-members of t... 
MAC Autoformers?
The Eminent Technology LFT-8b, while employing magnetic-planar drivers as do Magneplanars, is rated as 8 ohms by it’s designer, Bruce Thigpen. While Maggies’ impedances are solidly in the 3-4 ohm range, the ET LFT driver is an almost purely resist... 
Magnepan 3.6 or 3.7
Well, if you want to bi-amp, go for the 3.6, which has a parallel x/o. The 3.7 has a series x/o, bi-amping not possible without surgery.Another consideration is the possible delamination of the conductive wires on the Mylar diaphragms of all 3.6's... 
Tri-Planar Vll "SE Upgrade"
Geoffrey Owen uses rubies as the bearings in his fabulous Helius Silver-Ruby Omega arm (the arm Tim de Paravicini recommends for use with his EAR Disc Master turntable), and silica nitride as a more shatter-resistant alternative. Extremely hard an... 
Turntable isolation
Owners of the HW-19 VPI's also use the SIMS Navcom Silencers in place of the stock springs, but they are no longer in production. However, Navcom products are still being made for other purposes, particularly firearms. Others use roller bearings (... 
Talk but not walk?
@theaudiotweak, how can you say such a thing? Why, he’s just posting here to share his enthusiasm for the "hobby". It’s all about having fun!!! Are you suggesting he’s disingenuous?Get on board, brother---disassemble your electronics and stick lit... 
Autoformer vs Speaker impedance Curve
How fortunate are we in having two of the very best hi-fi amplifier designers/engineers working today (Ralph Karsten of Atma-Sphere and Roger Modjeski of Music Reference) sharing their knowledge with us here? That products of the quality they offe... 
narrow and wide baffles and imaging
Who remembers the Spica Angelus loudspeaker?