kijanki
Responses from kijanki
| FM Antenna question Truman,Antenna is usually not grounded thru equipment since it is separated by transformer but often is grounded with thin wire to prevent static built-up (being isolated on shingle covered roof). It is not relevant if antenna makes your house 5 f... | |
| Question for Atmasphere re: class A output calc Let me jump in. I'm not sure where double current comes from. I would think that when whole 0.1556A of bias current flows thru the speaker then the other transistor has to be off (Il=Ip-In).You cannot calculate RMS because you don't know the shape... | |
| Amp Specs esp. DampFactor : Citation, Adcom, etc. "we don't measure what is important to the human ear"Atmasphere - absolutely true but how we can measure it? I don't know how to measure amp's music power or how to measure TIM distortion or how to guarantee synergy with the speakers. Is there any... | |
| Acoustic Zen Hologram II or Satori Shotgun Lake_eleven,You can find some discussion here: http://db.audioasylum.com/cgi/m.mpl?forum=cables&n=34778&highlight=satori+shotgun+hologram&r=I use Satori Shotgun with Hyperion speakers but used it before with Paradigm Studio 60 v.2 with... | |
| pro's and con's of a 4 ohm speaker? Al, I always forget about tube amps since the last one I had was EL34 100W guitar amp I built about 40 years ago.As I understand it combined plate impedance gets divided by speaker impedance to get transformer turn ratio. If plate impedance is 1k ... | |
| Amp Specs esp. DampFactor : Citation, Adcom, etc. Aaron - I have Hyperion HPS-938 speakers that have very limited dealership in US. I bought it based on glowing reviews (6 month old dealer demo) without auditioning since I'm in Chicago and the closest dealer is in Pennsylvania. In worst case I wo... | |
| pro's and con's of a 4 ohm speaker? Cwaz - Power will be inversely proportional to load (assuming good power supply) while perceived loudness goes in (1/3.5) power of the amplifier output power ratios.In you case: Loudness = (8/4)^(1/3.5)= 1.22 (22% louder with 4 ohm speaker)8 ohm s... | |
| Fun Little Project for improving Dynamics "Too much of the crystals may actually suppress the dynamics"Do you drink leftover alcohol? | |
| Amp Specs esp. DampFactor : Citation, Adcom, etc. Aewhistory,Amount of gear sold here shows that problem is common. Maybe local dealer will lend you an amp or will let you bring your speakers (my did). Going by spects (especially DF) will be fruitless IMHO. Inductor in series with the woofer limi... | |
| Class "D" amp? I do not have a clue. Do you? Psag, Class D and SMPS operate on the same principle (PWM). Class D was invented when designers of SMPS showed that response to reference voltage is so fast it can play the music. | |
| Amp Specs esp. DampFactor : Citation, Adcom, etc. Aewhistory - don't base your decisions on specifications. High DF and low THD, IMD are most likely a result of deep negative feedback that increases TIM (Transient Intermodulation) causing unpleasant bright sound. I would even suspect that sound m... | |
| Negative Feedback a deal killer? Shadorne,Absolutely true, but linear power supplies also create HF noise in the AC mains by drawing current in short narrow spikes of huge amplitude. They are practically switchers at 120Hz. Modern SMPS with zero current / zero voltage switching c... | |
| Class "D" amp? I do not have a clue. Do you? 6550 - The problem here is that SMPS is small. It is hard to believe that something smaller can be better. It is line and load regulated and basically the same thing as class D amps that win Stereophile class A classification.It is difficult to ch... | |
| Class "D" amp? I do not have a clue. Do you? It is also possible that new generation is just only a little bit better (like BC Ref1000M with extra power supply caps) and "new generation" allows some critics to reevalute (read: save face) since others scored them much higher. For instance REF... | |
| Negative Feedback a deal killer? Michael_moskowich,Rowland uses SMPS in all class D models (including integrated). In higher models like 312 or integrated Continuum he uses additional PFC unit. For the rest like 102,201,501 you can buy external PFC unit. Such unit supplies about ... |