kijanki
Responses from kijanki
| transformers/output impedance Transformer is basically an impedance converter. To set proper conversion ratio we need to know speaker's impedance and recommended tube "plate load impedance". If we don't know speaker's impedance we can measure DC resistance and multiply it by a... | |
| Class D and Power Cables Since amplifier's power supply draws current in narrow spikes of high amplitude it might be better to plug it into conditioner that has energy storage and filter (huge capacitor and inductor). My amp is placed on Furman Elite PFi 20 and connected ... | |
| Streaming, Apple TV, Tell me why not. Steve, I don't question your expertise but perhaps something else was wrong. According to test conducted by Stereophile AE is bit perfect. "Some audiophiles have dissed the AirPort Express on the grounds that its digital output is not bit-accurate... | |
| Streaming, Apple TV, Tell me why not. I'm not sure what compression to ALAC has to do with AirPort Express sound quality. Airport doesn't convert to ALAC - it is done in Itunes. Airport receives ALAC data in packets and using its own clock outputs S/Pdif stream. At this point the only... | |
| Streaming, Apple TV, Tell me why not. Apple TV outputs 48kHz while CD rate is 44.1kHz. Translation between two affects the sound. I use AirPort Express at 5GHz - no dropouts. 5GHz is much better for wireless because is not as common as 2.4GHz(Bluetooth, Computer, Microwave, Cordless p... | |
| Expensive cables/connector and solder Audioquest welds their interconnects. They claim welding improves purity of the signal transfer. I suspect they use it either for ease of production or for marketing since, as Al explained, it would not make any difference. Purists (including AQ) ... | |
| When does speaker distortion become audible? At 20 Hz it was over 5% but according to this article:http://www.bksv.com/doc/BO0385.pdfit is harder to hear distortions below 400Hz. Single tone shows only THD but there are other distortions that might be more audible. Intermodulation, caused by... | |
| When does speaker distortion become audible? Bruce, the worst part of Studio/60 was aluminum dome tweeter. I did try to replace it with Morel Supreme 110 but at the end I failed - it is not as easy as it sounds. Tweeter in Hyperions HPS-938 is so well integrated that you cannot practically t... | |
| Has anybody tried using single solid core cables? Al, perhaps you're right (as usual) because if there is any chance of smearing sound because of small cable resistance vs frequency change (caused by skin effect) when wire is too thick, then it has to apply to changing (vs. frequency) impedance o... | |
| Has anybody tried using single solid core cables? I'm not sure why cables have to be thick since speaker source impedance for back EMF is mostly resistive but it will lower inductance of straight wire. Skin effect starts at gauge 18 in copper at 20kHz. Stranding wires will make it worse because c... | |
| What do I need to set up digital music server? I'm not really interested in buying all my CDs again...There are different reasons for using the server. I have only regular 16/44 CDs but storing them on computer Hard Drive allows me find them easily, set up playlists, become independent from th... | |
| Class D and Power Cables It might depend on design of power supply. Some class D amps have straight linear PS while others (like mine) have switchers and some have switchers with power factor module. The most sensitive to power cable is perhaps linear power supply. Switch... | |
| When does speaker distortion become audible? Bruce, I had previously Paradigm Studio 60v2. It had 2 1/2 way xover. One of two 6.5" woofers operated only at the low bass frequencies extending that way frequency response. My current Hyperion 938 have two 8" woofers in much larger cabinet (pret... | |
| When does speaker distortion become audible? According to Robert Lee of Acoustic Zen speakers operating at power higher than 10W can get 10-12% of distortion. Most of it comes from the woofer and is less audible. Here is fragment of interview with Robert Lee:"That is a good point and I would... | |
| When does speaker distortion become audible? Most of the speakers have overhunged motors (narrow gap, long coil) producing a lot of distortions especially at longer excursions (bass). Underhung motors (big magnet, wide gap, short coil) produce less distortions (are more linear) but are more ... |