atmasphere
Responses from atmasphere
| Tannoy Westminster amp matching question. Driving a 600 ohm load is an unusual task for most home audio preamps. We make the only tube preamps that can do it. There are a few solid state units too, but as you found out just because its a transistor unit does not mean it can drive this kin... | |
| Less than top line reel-to-reel worth it? Rockboy, Tape shedding is a function of too much moisture that the tape has absorbed.We recently did a reissue of an early 70s LP; the master tapes were stored in an attic and because it was dry and often hot, the tapes were in immaculate conditio... | |
| Bass leaves after amp warms up? No. But if you have problems again when you install it, you will know what to do. | |
| Tubes/SS Power Amps? It was a joke. If you run a real high voltage on tubes they can emit X-rays. | |
| Tubes/SS Power Amps? Generally speaking class D amplifier modules are less expensive. I have a 100 watt/channel module that cost $25 each in low quantities. It is the size of a pack of cigarettes, including heatsink, input/output connections and power supply connectio... | |
| Why should you need a power supply for preamp? The outboard power supply allows one to keep noisy transformers, rectifiers and the like outside and away from the preamp unit, which might have high gain circuits in it that might be quite sensitive to such noise.An outboard supply is generally s... | |
| Is soundstage just a distortion? Soundstage is the result of two things- good high frequency response and good phase reproduction (low phase shift). If both are correctly reproduced side information that appears to be beyond the spread of the speakers is normal. The Soundstage co... | |
| Bass leaves after amp warms up? Fishing, I'm pretty sure I suggesting removing the power conditioner on page one.The problem with most power conditioners, whether passive or active, is they force you to use a common power cord. If you get a voltage drop over that cord, it will r... | |
| Can I tweak L-R balance by differntial biasing? Swampwalker, yes, whoever wrote that is mistaken. Reducing the bias may actually get you a couple more watts, rather than less, as the B+ voltage may rise with the reduced quiescent current. But you would also have more distortion...Csontos, It so... | |
| Less than top line reel-to-reel worth it? I've been into Ampex pro audio machines for about 40 years now. I think I have had the same electronics (351) for about 35 years. They have been rebuilt three times.The old Ampex stuff is pretty bullet proof, not as nice looking or as easy to oper... | |
| What component is responsible for dynamics ? Much as I appreciate the very best high-end audio can do, it cannot and will not ever be mistaken for a live performance, even in a world class system set up correctly in a world class space - one could tell the difference instantly.Learsfool, con... | |
| Bass leaves after amp warms up? Fishing's girlfriend hears the same differences. So there should be no doubt that its a real phenomena. | |
| Tubes/SS Power Amps? Orpheus10, just FWIW if you think we can't see the frame rate at a movie theatre, go see the Hobbit and then go see the HFR (High Frame Rate) version of it!One thing that Class A tubes have over Class D is bandwidth. How about full power -1/2db at... | |
| Can I tweak L-R balance by differntial biasing? No worries- if the bias is set correctly the amp *should* have the lowest distortion for the class of operation it is designed for.For example if an amplifier designed for class A is overbiased or underbiased, the distortion will be higher. There ... | |
| Bass leaves after amp warms up? Fishing, Have you tried putting a fan on the amplifier?Based on all that we have discussed, it does seem that heat plays a huge role. The fan should be able to cool the amp's heatsinks. |