almarg
Responses from almarg
| Sub connection to CARY SLP-05 preamp Marty, take a look at the manual for the Velodyne DD subs. Its descriptions of the RTA/EQ processes are similar to what you have described, but I see absolutely nothing in the manual to suggest that those processes would not occur in exactly the s... | |
| Why 24/7 warm-up period on amps? 09-12-11: Rower30What there is, is an increase in capacitance as the leads get longer (say bye bye to higher frquencies at 3 dB per octave at the filter fo frequency which drops as the leads get longer). So all the gold and silver on earth won't d... | |
| Sub connection to CARY SLP-05 preamp I could be wrong here but I believe the Xover works on the line level input. This would make this a complete non-starter, since you need to apply a low pass filter.I would feel pretty certain that the sub low pass filters its speaker-level inputs ... | |
| Sub connection to CARY SLP-05 preamp Marty & Edorr, good points about RTA and equalization, with which I have no particular familiarity. I would expect, though (correct me if I'm wrong), that driving the sub and the power amp with parallel line-level signals from the preamp would... | |
| Sub connection to CARY SLP-05 preamp 09-12-11: Edorr... I am using the fully balanced modwright 36.5 to drive my subs and mains, and the manufacturer explicitly advises against using RCA and XLR at the same time, because it will create an uneven load on the output transformer. I pres... | |
| Why 24/7 warm-up period on amps? I would just add to what has been said the thought that if there are in fact mechanisms by which warmup beyond the point of thermal stabilization can produce audibly significant changes, I see no reason to expect those changes to necessarily be fo... | |
| Sub connection to CARY SLP-05 preamp Once the 10x rule is satisfied, or comes close enough to being satisfied (as in this case), then further increases in the load impedance seen by the preamp will provide no further benefit. The choice of an amp should be made based on other factors... | |
| Sub connection to CARY SLP-05 preamp The 30K figure I originally cited was a conservative rough approximation, cited as an example (the term "e.g." which I used means "for example").Prior to submitting my subsequent response, in which I indicated that 25K would also be ok, I did some... | |
| Sub connection to CARY SLP-05 preamp 25K is sufficiently higher than 3.4K to be good enough. The worst case rolloff, which would occur at 20Hz, would be less than 1db, probably significantly less than 1db.The reason I mentioned the issue is that a lot of subs have line-level input im... | |
| Sub connection to CARY SLP-05 preamp The input impedance of the DD-12's line-level rca inputs doesn't appear to be specified anywhere. The SLP-05's output impedance rises substantially at deep bass frequencies, to 3400 ohms at 20Hz, as indicated in Stereophile's review.The concern th... | |
| Bryston BDP1- loading problem I think that it might be worth investing a few dollars to try a usb y-cable such as this one, connecting the two larger connectors to both of the BDP-1's rear ports. If the two rear ports are independently powered (you might want to ask James to c... | |
| W4S ST-1000, How Loud Should It Play? Interesting points, Magfan. I note, though, that the FTC power rating shown at the link you provided for the Icepower module is based on the assumption of no external heat-sinking. I'd imagine the rating would be significantly higher if the module... | |
| CD Player with Polarity Invert? It's sort of an annoying problem as I'm trying to invert polarity of the phono stage and the CD player relative to one another. Why not just swap connections at the phono cartridge? Interchange red with green, and interchange white with blue, and ... | |
| W4S ST-1000, How Loud Should It Play? I note here that the speakers are 4 ohms, not 6, and have a rated sensitivity of 85db/2.83V/1m. That is only 82db/1W/1m, which is quite low.Also, the manual indicates that the long-term power handling capability of the speakers is 170W. I wouldn't... | |
| Bryston BDP1- loading problem If you are saying that the drives with which you had the problem are bus-powered (as opposed to having their own ac power supply), did you have them connected to the BDP-1's REAR USB connectors, as indicated on page 5 (pdf page 8) of the manual?Re... |