nguyen787
Responses from nguyen787
| LDR Active Preamp - does it exist? George - the OPA627 DIY is too hard for me. Is there another version that easier.... :)) | |
| LDR Active Preamp - does it exist? I think I will keep the Lightspeed - sorry Steve SCM. Burson buffer sounds like a good idea. The cost is around $700 which is not cheap for what it is but if it is truly solve the high voltage input issue with my amp, that may be worth it. I looke... | |
| LDR Active Preamp - does it exist? What do you think - One alternative to solve the issue is to buy a match preamp. The match preamp specification is a bit worrysome for me because it output voltage is minimum 3V and max at 10V. I guess the reason it matches with the amp 4V input i... | |
| LDR Active Preamp - does it exist? Thanks George. I asked Grant Fidelity but did not get the answer I want to hear.It is suggested that the amp Shuguang S845MK need to match with preamp Shuguang S200MK. The preamp spec is kinda freaky:Input impedance: 100kohmInput Power Voltage: ≤1... | |
| LDR Active Preamp - does it exist? Using Lightspeed, I can get the sound level at average 90 dB with high sensitive speaker 98 dB. The dial is near to max, position between 2 PM - 3 PM. Low volume tracks are the problem. In anycase, I would like to optimize our system using the amp... | |
| LDR Active Preamp - does it exist? CD/BluRay player is Oppo BDP-103. I dont know what are the output impedance nor voltage. I asked them the output voltage and impedance, but their answer was abit vague "designed to work with receiving equipment which is expecting an input impedanc... | |
| LDR Active Preamp - does it exist? I have three questions here regarding using of buffer:1.) My understanding is buffer provide no gain, it is rather impedance mismatch correction device. Burson website does not indicate 6dB gain nor voltage gain. I sent them an email today to inqu... | |
| LDR Active Preamp - does it exist? I already owned the amp which input sensitivity at 4V. These amps practically eliminate the use of passive pre, even using Tekton Lore speaker rated at 98 dB, still does not provide enough loudness and dynamic. It would be a surprise to me that no... | |
| Thoughts on 845 set monoblocks Hi Simon, my thought on the Shuguang is quoted from another thread:"S845 has one major flaw that bother me so much. The amp input voltage is 4V which is very high. This input voltage results low sensitivity and therefore restrict the use of passag... | |
| Zu Druids compared to Tekton Lore Speakers S845 has one major flaw that bother me so much. The amp input voltage is 4V which is very high. This input voltage results low sensitivity and therefore restrict the use of passage amp. When I tried to have a passive preamp (lightspeed), at the re... | |
| 845 Tube Amps I have an Shuguang Classic 845 tube monoblocs. Because its high input voltage (4V), passive preamp was a challenge to keep up high volume. I may want to shop around for a used pair of Audion Black Shadow and sell the Shuguang. | |
| 845 Tube Amps Early - how much were the pair of Audion 845 Black Shadow used? | |
| Preamp - 18 dB Gain too low? I looked into their spec for preamp S200MK and also found a mismatch between in the manual and Grant Fidelity website.Manual:Output Voltage: more than 3V, maximum 10VOutput impedance: less than 10k ohm | |
| Preamp - 18 dB Gain too low? Checked and corrected Oppo setting per suggestions, do not see any different on sound level. Volume --> fixed at 100%. George raised an interesting concern - main voltage. The amp power outlet plug written "115 V, 50/60 Hz" seems OK for US AC e... | |
| Preamp - 18 dB Gain too low? Being ignorant how you calculate 22 dB more gain with Rogue Apollo? Any websites or references are appreciated. |