Forums
https://www.decware.com/cgi-bin/yabb22/YaBB.pl EQUIPMENT FORUMS >> ZBOX >> Zbox questions https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1265908137 Message started by Steve Deckert on 02/11/10 at 17:08:57 |
Title: Zbox questions Post by Steve Deckert on 02/11/10 at 17:08:57 Quote:
Joe, The ZOX is always shipped with the 12AU7 or 12AU7a. The 12AX7 will easily saturate if it see's a full 2 volts at it's input. With a high output dac of 3 volts or more it would not be usable This is why an input gain control was designed into the ZBOX so that you can turn a high output source down to normal. A 12AU7 is far more forgiving and will work with the ZBOX gain control all the way up in almost all cases. 12AT7 falls in the middle of the two. The 12AU7 has the lowest output impedance while the 12AX7 is going to have the highest. This means that the 12AX7 will not drive an amplifier with a 10K input impedance very well. There would be no bass. On the flip side it may drive a 100K input impedance wonderfully. This is why some people report it sounds good with a particular tube and others report just the opposite. I'd be curious to know exactly what the signal path consists of and where the ZBOX is placed in your system. - Steve |
Forums » Powered by YaBB 2.2.2! YaBB © 2000-2008. All Rights Reserved. |