ar_t

Responses from ar_t

Nuforce
Can someone explain to me why so many of you guys buy something and then send it to some "modder" to hack on it???? You realise that you end up paying more, but if all of the "improvements" came stock, and the price was raised accordingly, you wou... 
Polish for Rowland amp facia?
While I don't know exactly what amp you have, I can assure you that it is anodised finish. They are not designed to be polished. I have taken a "scotch-brite" pad to some of the ones that I make to remove some of the roughness that remains after t... 
Bi-Amping
Are the crossovers active??? 
Nuforce
I get really tired of reading how cheap this stuff is to build, and how easy it is, etc. Do these same people object to $2000 interconnects? Hey, it is just wire and some fancy connectors, right? Can't be that expensive or hard to make.If it is so... 
Question about sound below an amps frequency specs
NO...........Filters are spec'ed for "-3 dB point". Using a straightline approximation, the response at the "-3 dB point" is really 0 dB.We do things like that to confuse the non-technical crowd. Devious nerds, us engineer types are.Back to the to... 
"White noise hiss" through speakers.
Without going into a lot of technical mumbo-jumbo, almost all of the "hiss/white noise" is contributed by the preamp. If the amp is the dominat contributor to the "noise floor", then take it back. It should not be.High noise necessary for imaging?... 
Question about sound below an amps frequency specs
Will it pass info outside of those ranges?Yes. How much........figure that each one represents a first order filter in the amp.IOW........those numbers are 3 dB down, and one octave away would be 6 dB down. Two octaves would be 12 dB down.Playing ... 
Anyone used 240V-120V step down transformers?
At that size, I would advise using a stacked iron type. A toroid of that size will have substantial inrush current.Toroids also have the dubious distinction of having too much bandwidth. A stacked iron type will filter out some of the crud on the ... 
How would you describe your class D amp's sound?
I received this as part of an e-mail from someone that I suspect plans to enter the fray as a purveyor of ICEpower-based "digital" amps:"Yup, the sound seems system dependant. I've tried it on three very different speaker systems (widely different... 
Threshold s150 or Forte 4a amplifier?
Another satisfied customer..........You're welcome.(Don't know about the others, but since the chassis is deeper, it may be further away.) 
Threshold s150 or Forte 4a amplifier?
I have not worked on any for almost 20 years, but I do not recall that much difference between them.Actually......I like the output transistors in the Forte much better. 
What next????
Well, I don't remember it. Guess I never drove one. 
Historical look at amps
I did not say that I heard them at a dealer. I sent them to guys who had aleady brought one of those models in to audition. And sent them back, unsatisfied. There are a few times when I found someone who actually owned one of those brands. There i... 
Historical look at amps
Seriously, I only saw one model Ayre amp. Can't even remember the model number. Heard several of them, in more than one location. They were the hot ticket to go with a certain Thiel speaker, that badly needed "taming". Last time I saw Charlie Hans... 
Historical look at amps
I think that your cut and paste may be mistaken. Either that, or I did not explain it fully.Voltage feedback.......the "normal" kind. As you increase the gain, the bandwidth DOES drop. The product remains constant, but that is not the same. Conver...