From David Messenger Sent Thu, Jun 21st 2018, 03:53
From David Messenger Sent Thu, Jun 21st 2018, 03:53
Found it on reverb, had to put a space between synth and driver... https://reverb.com/item/4093960-signal-transport-synth-driver-ii-line-converter-24-channels-w-cables-black On 6/20/2018 9:38 PM, Brian Willoughby wrote: > On Jun 18, 2018, at 7:33 PM, Ivan Schwartz <xxxx.xxxxxxxx@xxx.xxx> wrote: >> Only active DI use phantom power; passive ones with transformers do not need phantom. > True. In addition, passive DI block the phantom power - DC cannot pass through a transformer. So, not only do they not need phantom, but they defeat phantom if it’s there. > > >> The active circuits in a DI typically do not provide any gain. >> >> Phantom power is current limited (thus the higher voltage) so there is little power available for a real preamp design. Phantom powered mic are usually putting out a mic level signal, not line level. A 500-series rack power supply has much more current available, and the bipolar power supply design allows for plenty of headroom. >> >> The big issue I have using a DI for synths is that a typical DI is designed to drop the signal to mic level, and then you use a mic preamp to add gain. This is not an ideal situation in terms of gain staging and optimizing signal to noise ratio. That is why devices like the SynthDriver were designed. > Agreed about non ideal gain staging. (unless you like adding noise) > > What’s the SynthDriver? Who makes it? I tried a quick search and couldn’t find anything. > > Brian > > >> Ivan >> >> OnJune 13, 2018 at 8:16:52 PM, Brian Willoughby via analogue <xxxxxxxx@xxxxxxxxx.xxx> wrote: >>> Considering that DI products are almost always used in a situation where phantom power is available, and potentially even where wall power outlets might be in short supply, it makes sense that DI designers would include the option to power everything from phantom power. >>> >>> In addition, since phantom power is (supposed to be) 48V, that’s a lot more power for a preamp than, say, the +/-16V of 500 Series modules. > --- This email has been checked for viruses by AVG. https://www.avg.com