ngjockey
Responses from ngjockey
| Is my Placette linestage holding back my Krell AMP The Krell's low sensitivity is offset by the 400W. 100Kohm input impedance is good too.The Levinson DAC will double the output voltage to 4 if you can use the XLR connections. It also has an incredibly low 5.5 ohm output impedance which is great f... | |
| Dedicated Lines - Sub panel or no? I use a subpanel but my requirements are unique.I have 3 amplifiers (2400W combined) for stereo. Much of that in class A. I supply a large step-down transformer with 240V for balanced AC output for 2 of the amps.A TVC line stage provides galvanic ... | |
| Biamping, bass and amplifier type. It might be nice to see a discussion of all the success and failure stories of biamping but Audiogon's one-dimensional posting is impractical for that purpose because it would split in so many directions. Horizontal/vertical, active/passive, ... etc. | |
| If you play your music between 10 and 12 on the d Just the opposite for TVC's, where output impedance rises with less attenuation. S&B TX102 @ 1KHz: .14/-40dB, 14/-20dB, 1.4K/unity. That's why I use high gain (38dB) amps with them. Input impedance is more favourable with attenuation too.I hav... | |
| Audio Noise from my step up/down transformer The hum from the transformer is mechanical and not necessarily translated directly to the quality of the AC to the amp. That mechanical hum could be a symptom of saturation caused by overloading or DC offset but some just do that in some places. I... | |
| Driving 1 ohm If they were Apogees or Kappa9's, a rugged SS amp would be the way to go but for ESL's, Ralph is right.Another option is "monostrapping" or parallelling an identical pair of stereo amps. That would double the current and wattage and halve the outp... | |
| How to lower noise floor through mods? There's some gear that responds extremely well to balanced AC. Had a SFL tube preamp that was a completely different beast when given 60/60. | |
| Fed Ex Ground Shipping Woes Although I've never had any problem with damage, I refuse to use Fedex, air or ground, because the local distribution and drivers have been incompetent. Not once have they actually delivered to my door. Last time, they said my address doesn't exis... | |
| Crossover talk: How does it affect amp headroom? Amps are load reactive, so a passive xover will reduce the load. However, a passive xover, espescially at low frequencies, is a load in itself and highly reactive and parasitic.For the price, the active and flexible Paradigm X30 is an easy choice ... | |
| Where's the bass? Funny! I guess bass has no WAF. You just have to look harder. | |
| Isolation Transformer - Use with Cheater Plug HHawk: I guess you missed Jea48's humour. Yes, you can still get a minor shock. The iso will reduce common mode noise in the AC line and reduce voltage spikes. Sizing is important. For both a preamp and amp, 1 KVA is minimal.You might want to do s... | |
| An Off Topic Question Re Off Topic Questions Oil burners are more expensive. I did a quick google and saw prices between $1200 and $2500, depending on BTU and quality. You don't want to buy a cheap oil burner, it's a tough fuel to burn properly. They even have hi-eff, condensing oil burners ... | |
| An Off Topic Question Re Off Topic Questions I assume you're talking about an oil burner here and I haven't had to deal with those for decades, gratefully. Going rate for a simple natural gas furnace replacement around here is $2500 Canadian ($2000 US). I'm sure there must be many complicati... | |
| running full range or not full range...huh? It can be done passively as well. Had Kappa8's that had a switch on the back to high pass the lowest octave to be an easier load to the amp. Dependant on the amp's capabilities. It made no difference to my amp at the time.It can also protect the s... | |
| Isolation Transformer - Use with Cheater Plug Forgot about that. That explains a lot about why iso's have gone out of fashion. My wiring has been more creative and with larger transformers. Yes, I should have said neutral instead of negative. |