almarg
Responses from almarg
| Resistors vs.peltz Autoformer- Differences @gdnrbob Bob, I would summarize what I and some of the others have said as follows:If the impedance of the speaker is too low to be a good match for the amp, and one desires to keep both of them, a pair of Zeros will almost certainly be a much bet... | |
| Can you tell me why I didn't like the Reference 3a MM's? I have looked at the Zu’s as possibility. What about the 12 ohms impedance? Is that an impedance to good sound with my amp? The smaller Zu models which are 12 ohms (Omen MkII, Omen Bookshelf) are rated at 97 db/1 watt/1 meter. While the XA25’s po... | |
| Can you tell me why I didn't like the Reference 3a MM's? I have no experience with the de Capo MMs or with Omega speakers, but it may be relevant that according to measurements of the BE version of the de Capo performed by the National Research Council of Canada their sensitivity (86.7 db/2.83 volts/1 m... | |
| Resistors vs.peltz Autoformer- Differences I’m not sure if everyone is keeping in mind the distinction between series connection of a resistor and the parallel connection that is being suggested by Zu for some of their high impedance speakers. The effects of the two kinds of connections ar... | |
| Resistors vs.peltz Autoformer- Differences Aside from the load impedance, wouldn’t adding a resistor in series with speaker driver affect the high frequency response of the driver, particularly in case of a single driver or a tweeter? @kalaliYes, adding a resistor in series will dramatical... | |
| Resistors vs.peltz Autoformer- Differences @gdnrbob Hi Bob,Thanks for providing the link. Zero autoformers are normally used to increase the impedance seen by the amplifier, so I had assumed that your reference to using resistors as an alternative referred to inserting a resistor in series... | |
| Resistors vs.peltz Autoformer- Differences Hi Chris @cal3713 ,I guess the most major downside of doing that would be that most solid state amps can’t provide much more than half as much power into 16 ohms as into 8 ohms.And in the case of tube amps having 4 ohm and 8 ohm output taps I woul... | |
| Resistors vs.peltz Autoformer- Differences Hi Bob,While using a resistor will lighten the load on the amp it will also waste a lot of the power the amp is putting out. For example if a 4 ohm resistor is placed in series with a 4 ohm speaker (that is really 4 ohms) half of the power suppl... | |
| When do the new Atmasphere Class D come out? The only thing next to the UV-1 is an Ayre Codex DAC and a LCD monitor. @gdnrbob, one thing I would certainly try, if you already haven't, is turning off the monitor and disconnecting it from the AC.Best regards,-- Al | |
| Amperage 2 vs 4 channels amplifier @imhififan Not necessarily, especially if the amps being compared are from different manufacturers, because (using your example) the amount of time the 50 amperes and 30 amperes can be supplied for is not usually specified. For example, the 50 amp... | |
| Amperage 2 vs 4 channels amplifier I would ignore those specs altogether. Amplifier current ratings are among the most useless of specs, IMO, as they almost always represent how much current the amplifier (or in some cases just its power supply by itself) can supply into a dead sho... | |
| Balanced to RCA Hi Eric (bdp24),One way to do that is to simply insert an RCA-female to XLR-male adapter which connects XLR pins 1 and 3 together (as most such adapters do) into the XLR input connector, and use that adapter in conjunction with an RCA-to-RCA cable... | |
| Balanced to RCA NEVER short pin3 to pin1 on a balanced XLR output. @danipIt’s never a good idea to say "never" :-)As my previous posts should make clear, I agree with your post when it comes to most designs. But there are exceptions.You referred to balanced outpu... | |
| Balanced to RCA @sunnybaker As Bob and Mike indicated earlier the best approach to connecting a balanced output to an unbalanced input is widely considered to be with a Jensen Iso-Max transformer. A suitable transformer, given that you are using a two-channel amp... | |
| Balanced to RCA @david_ten Thanks for the mention, David. Most (but not all) XLR-to-RCA adapters ground the signal on XLR pin 3, i.e., they connect pin 3 to pin 1, which is the ground pin. In the case of most (but not all) components providing XLR outputs that ki... |