audioengr
Responses from audioengr
| Power cord? Why? "Also, the greater voltage drop in a wimpy power cord does not translate into degraded sound provided that the power supply is robust."So, show me one amp which has a "robust" power supply. I have never run across an amp yet that did not benefit f... | |
| Power cord? Why? You may not be able to measure what you hear. Depends on the noise floor of your sampling oscilloscope. You MUST use differential probing technique for this to avoid ground-loop noise as well. This is not a trivial measurement.You would be better ... | |
| Power cord? Why? TWL wrote: "I'm currently using a large capacity lead acid automotive battery with 650 cold cranking amps, located about 24 inches from my amplifier. I have the terminals directly connected to the power input barrier strip on the amp, with 12ga OF... | |
| Can someone tell me what's going on? The simple explanation is that the output impedance of your source is higher than the preamp output impedance. This is typically the case. Therefore, a low-capacitance IC will have a more profound effect from source to pre than from pre to amp. | |
| Power cord? Why? Batteries, like AC power sources have impedance. Some batteries will have lower internal impedance than others. Some will work well during transient current demands and others will not work as well to provide the transient current. There is no sur... | |
| Power cord? Why? Viridian - the point is that if you cannot measure anything, then your mind may be playing trick on you or you have not gotten to the root-cause of the sonic change. At least if there are measurements that coincide with sonic changes, then theorie... | |
| Power cord? Why? Here is my theory as to why they make a difference, with analysis and measurements.Amplifiers demand current from the power-line when the capacitors in their power-supplies become momentarily discharged due to high-current transients in the music ... | |
| Where do you start your cable upgrade? Interconnect, source to Pre. The source has the highest output impedance, so it will be more sensitive to cable capacitance. Next in line should be the pre to amp. | |
| Cable long question Kana813 - this is very system dependent and particularly linked to the quality of your IC's and speaker cables. The general rule in 90% of systems is that speaker cables should be longer for optimum results. | |
| Speaker cable recommendation ? Check out the series of reviews on speaker cables by Bob Neill at:http://www.positive-feedback.com | |
| Speaker cables for Aerial 10T's and BAT VK1000's See the Positive feedback review at:http://www.positive-feedback.com/Issue5/empirical7.htm | |
| Cable long question Shorter is always better for both IC's and speaker cables, but my analytical study has the following result: See the Audio FAQ at:http://www.empiricalaudio.comThe results indicate that speaker cables should never be shorter than IC's. | |
| PC that wont change my amp's personality ? Sounds like you are hearing the music that you have been missing. Inductive power cords can act like compressors or tone-controls, holding back the dynamics of the amp, particularly at HF. If there is harshness in the recording, shouldn't you be h... | |
| Best bi-wire speaker cables under $1000 Why do you need biwire? Very few speakers actually benefit from it and think about this: The crossover was designed to have identical signals at both the woofer and tweeter input circuits. Whe you biwire, the voltage at the two inputs will be diff... | |
| Silver DIY Interconnects Sean - impedance is not a problem with analog interconnects. The digital IC's obviously need controlled impedance and I accomplish this using a combination of air dielectrics and expanded Teflon - a patented design. 75 ohms is very difficult to ac... |