gregm
Responses from gregm
| Passive preamp for Tube Amp? Consider the following:Using a passive attenuation device requires that you optimise electrical "energy transfer" parametres (between pre & amp)1) The output impedance of the pre and the input of the amp are important. The placette seems to ha... | |
| No Pain No Gain? the higher you need to turn up volume, the more you get distortion and/or noiseIf so, there's something definitely wrong with the S/N -- the system noise floor is veru high, or gain stages, or...I strongly suggest you check it out. | |
| PleaseĀ
I need help setting up sub-integration The frequency response of the S40 is -2dB at 62Hz.1) Check what the S40's response is at ~35Hz assuming 70Hz is ~0dB If not, find the closest ~0dB frequency on the S40 & check the loss 1octave lower. This will give you an idea of the slope (i.... | |
| Sonus Faber Amati Homage vs Thiel 7.2 Henry_chinaski: I set them up myself. I should've made it clear that I bought them used here in New Zealand. I have tried different positions, but hasn't helped.Adjust speakers according to midbass energy (if you haven't already). Start by bringin... | |
| hi sensitivity lower power with b&w No, no... You need Watts at the OUTPUT of the amp to drive the speakers. Amp "sensitivity" has to do with how much input energy/volts is needed for the amp to reach full output. This is usually very low 1-2 v.Watts: the amount of energy the amp ou... | |
| DIY speaker enclosure, maybe TL? Speaker building is very exciting and rewarding (IMO). Please don't misunderstand me however, if I say that designing can be a bit tricky for an "entry level" builder. TL is particularly difficult and until King & other came up with modelling ... | |
| Do you say Thank You? Maybe they just don't think of it. I find this irksome.I always acknowledge response and try respond to question asap... | |
| How do tube Watts compare to SS Watts? Bartok, the KT 88 (similar to 6550), etc aren't push-pull. They're pentodes. Push pull is an amp circuit config.Cheers | |
| Can you imagine a world without vinyl? Zaike: you could hit a Lenco & refurbish it a la Nantais. It's great fun -- really! | |
| Experiments with VTF Where did you set the VTA when you started? Default parallel? | |
| Break in period Shadorne -- that mustn't be what I'm referring to. I distinctly remember them comparing distortion figures (3%) I think between two ATC models at specific spl levels...Oh well.the higher output impedance of a tube (with ouput transformer) coupled ... | |
| Quirky British Audio Why else would 8watt SET's work better in some cases than a 200watt SSBecause at least the following apply?*speaker is very sensitive*speaker equivalent circuit interfaces optimally with valve output characteristics (small phase swings, hi impedan... | |
| Break in period PaulyDid you measure distortion levels and how do you know it is harmonic distortionsActually there is -or used to be- some ATC measurements available s/where re, linear & nonlinear distortion on their models. Unfortunately haven't found it-so... | |
| SET for 88 dB 4 ohm loadspeaker Which loudspeaker?? Judging by yr info, go for any 40+W rms /4ohm, spec'd amp fm any reputable manufacturer (Wavac, Nagra, Kr Enterprises, ??). 8 series tubes or 211 tubes or 610 tubes. That's quite a choice... whether they'll play music with yr p... | |
| Break in period Jeff sez If the results are audible, shouldn't they also be measurableShould be, I guess. BUT what would one measure? Once measured a diy phono equaliser with a friend (for other purposes) at ~2month intervals with a scope. Zilch. Note however, th... |