ieales
Responses from ieales
| Cut lower frequency to help my bookshelf speakers The simplest is to use a passive XO to roll the lows out of the mainssee ieLogical SubterraneanHomesickBlues for the trials and tribulations of integrating subs with small mains. see http://www.ielogical.com/assets/Audio/PassiveXO1.png for passi... | |
| Tubes for Magnepan’s. That's my kind of finagling. I forgot to say Class D for the woofers and tube for the tweets. I also have 2 subs and roll the bottom octave out of the woofers which is an effective 200+ watts for the woofers which being nominally ≈6.5Ω is a f... | |
| Tubes for Magnepan’s. About 35 years ago I drove Tympani IV w a 70w tube amp for the mid tweet and 350wpc SS for the woofer. The system could raise the hair of the back of your neck, it was so scary realistic. Queen, London Phil, Ben Webster all 'lived' in my room. see... | |
| How to find the min and max bending radius of a cable. Many Belden tech specs give the minimum bend radius,Find a similar cable and check.When we installed studios RoT was min ≈10x diameter | |
| Using 2 different brands of interconnects? I would imagine if you did a blind test you would not be able to detect a difference. Someone should do this with twenty people present, It's been done countless times.I ran a blind speaker cable test @ AES in the 80s. After a few days running ... | |
| Using 2 different brands of interconnects? HiFi is probably the least rigorous hobby extant. BS abounds. Doubly so in cables. The complete system is what is matters. IGNORE ALL SPECIFIC RECOMMENDATIONS. Even if the opinion is accurate, it only applies locally.The lack of evaluation rigor c... | |
| Class D amps that are superior to all or most? There was less bullsh!t in the 50's & 60's | |
| Class D amps that are superior to all or most? ^^^ from?Monitors used to eval? | |
| Class D amps that are superior to all or most? We've measured no change in bandwidth of our prototypes and Beta units from 20Hz to 20KHz I don't think I ever mentioned bandwidth. BW is not FR. BW is how far. FR is variation over BW. Some amplifiers drive test loads ruler flat and reactive l... | |
| Class D amps that are superior to all or most? @atmasphere Your post began stating I have a misconception. I have no misconception of Class D, filters or Q.There is little change for some products as I showed. For others there is a lot.Designers debate the value of under, critical [for design ... | |
| Class D amps that are superior to all or most? frequency response does not vary with load... Define load.Non inductive load resistor, speaker simulator or something like this Elac Debut B6 https://www.stereophile.com/images/416Elacfig1.jpg. or Klipsch Forte III https://www.stereophile.com/ima... | |
| Class D amps that are superior to all or most? I think you might have a misconception here! Its true that the output filter is affected by the load. But it won't change the FR significantly because of two factors. First, the load affects the Q of the filter. What this means is with lower imp... | |
| Class D amps that are superior to all or most? Its also impervious to weird speaker loads causing it to oscillate because its already oscillating! However, the driven device forms part of the output filter and thus effects the frequency response. Tube amplifier frequency response also suffe... | |
| Class D amps that are superior to all or most? For the 9,999th time:Class D frequency response is determined by the loadA particular amp can sound quite fine with one speakerThe same amp can sound quite poor with a different speakerALL specific recommendations are worthless. | |
| Are there passive attenuators that don't zero volume and only offer one input ? ±0.1VDC 1mVDC ripple is hardly anything to sneeze at.Thyristors make gawdawful noise when switching. Pointless to control current in a device using a few mA.Quit digging. |