almarg
Responses from almarg
| IC Splitting? In many circumstances I doubt that it matters, particularly if the cable lengths that are involved are not great, and also if the output impedance of the preamp is low. But if it does make any difference I would expect that whichever configuration... | |
| Fuses that matter. Thank you, Roger, for bringing the expertise of a distinguished designer to this issue. As I said in my post dated 4-29-12, the explanations that tend to be offered for the supposed benefits of expensive fuses seem plausible until they are looked ... | |
| REL subwofer High Level vs Low Level connection The line-level alternative requires that impedance matching be considered. More often than not preamps providing two sets of outputs do not separately buffer those outputs (i.e., they are simply connected together inside the rear panel, and driven... | |
| System feedback coming thru speakers.....help So, you believe it might be bad tubes? Seems like a reasonable bet to me. If it is a bad tube, it would figure to be either V5 or V6 (both are 12AU7's), since the other tubes are not involved when line-level sources (CD/DVD or cassette) are being ... | |
| Got Noise? amp on + preamp off = noiseOK. So that rules out the preamp as the source of the noise, leaving the cables as what should be focused on, as you are doing. If those efforts aren't successful, the Mogami's (or other shielded balanced cables) would s... | |
| Got Noise? Mofi,Note that Mark indicated that "the level of noise is audible when I am playing music only at very low volumes." That would appear to indicate that the noise level is insensitive to the volume control setting, which would mean that it is not b... | |
| Got Noise? 05-10-12: BombaywallaMerely saying that unless the amp is on, the speakers are not driven thus any noise generated in the electronics will not be heard. This is obvious to me but no one else including Almarg stated it so, what am I missing here?Ye... | |
| Got Noise? Hi Mark,So my understanding is that:(a)Amp on + preamp off = no noise.(b)Amp on + amp inputs disconnected = no noise.(c)Amp on + preamp on and muted = no noise.(d)Amp on + preamp on and unmuted = noise. The noise level is independent of the volume... | |
| 1 preamp out to a 2nd preamp in any harm? The mono signal will be generated via y output from the preamp going to the monoblock.That will probably work ok, but if the preamp has particularly low output impedance sonic issues might result.The monoblock will connect via speaker wires to the... | |
| System feedback coming thru speakers.....help Try different preamp, or try to see if you can plug the DVD source directly into your amp temporarily...some DVD players have a built-in internal volume control...usually terrible but it should work. Or try the cassette deck straight into the amp.... | |
| Got Noise? Hi Mark,Before finalizing any further suggestions, I'd still like to know the answers to items 2 and 3 in my earlier post.My tentative thought, pending those answers, is to suggest that you try the Mogami shielded and balanced cables I mentioned e... | |
| 1 preamp out to a 2nd preamp in any harm? I don't understand several things about this:1)The woofers in the main speakers will presumably be handling much higher frequencies than a sub would normally handle. Assuming that the overall setup is intended to provide stereo (is it?), I don't s... | |
| Components that you regret parting with? A pair of Marantz 2 monoblock amplifiers, from the 1950's, which I purchased in the early 1990's and sold about a year later. Spectacular, lush, rich sound; exceptional build quality for their time; and a historically significant collectable. They... | |
| System feedback coming thru speakers.....help A p.s. to my previous post. Looking at the information on your preamp at the CJ website, although I realize you said that the tube types at locations 4, 5, and 6 are correct, just to be sure I'll mention that if a 12AX7 or 5751 were placed at the ... | |
| System feedback coming thru speakers.....help I've plugged the DVD into a different source on the pre amp......same results.What you should try is a different source component, such as the cassette deck. Connecting the same source into a different input of the preamp doesn't prove very much.I... |