http://www.voxamps.com/forum/ VOX | Discussion Forums Topic: AC4TV tone, valves and speaker wiring en Wed, 19 Jun 2013 02:40:11 +0000 http://www.voxamps.com/forum/topic.php?id=3964#post-20942 Mon, 07 Feb 2011 21:02:54 +0000 dean2371 20942@http://www.voxamps.com/forum/ <p>thanks very much, that's really helpful. I appreciate the time you've taken to help me.</p> <p>all the best </p> http://www.voxamps.com/forum/topic.php?id=3964#post-20933 Mon, 07 Feb 2011 15:30:37 +0000 vox_max_usa 20933@http://www.voxamps.com/forum/ <p>Okay, checked one here. White goes to positive, black to negative. Hope this helps! </p> http://www.voxamps.com/forum/topic.php?id=3964#post-20917 Mon, 07 Feb 2011 04:49:15 +0000 ac15er 20917@http://www.voxamps.com/forum/ <p>I don't have an AC4 but I would say that one of the wires is red and in my experience that is always the positive, the speaker terminals should also be marked with either - or +, hook up the red to the + and you should be good to go. </p> <p>I don't think you can damage anything except the speaker could be out of phase if I'm wrong, but I'm pretty certain that red will be positive.</p> <p>cheers </p> http://www.voxamps.com/forum/topic.php?id=3964#post-20902 Sun, 06 Feb 2011 15:56:04 +0000 vox_max_usa 20902@http://www.voxamps.com/forum/ <p>Glad to hear you're enjoying your amp! The tone will definitely get more responsive as you kick up the volume a bit. Not abnormal. </p> <p>As far as changing out the tubes, you'll get less gain (and in that regard, less perceived volume) as you move away from the 12AX7. Here's a good on-line store that gives a quick rundown of 12AX7 substitutions and their gain factor: <a href="http://thetubestore.com/gainfactor.html." rel="nofollow">http://thetubestore.com/gainfactor.html.</a> </p> <p>As far as the wiring, I'll have to check in the office tomorrow and get back to you. I've only got an AC4TVH here at home.</p> <p>Hope this helps! </p> http://www.voxamps.com/forum/topic.php?id=3964#post-20874 Sat, 05 Feb 2011 13:32:16 +0000 dean2371 20874@http://www.voxamps.com/forum/ <p>Hi, I'm really enjoying my AC4TV with the 10" speaker. I play a MIM strat with lace sensors, mostly blues/rock. I play at low volume only, which is part of the reason I bought this amp. Grateful for advice on 3 issues.</p> <p>First, the tome control isn't very responsive at low volume. Is it because I play quietly, or should I change the valves? I bought the amp S/H and don't know how much use it's had.</p> <p>Second, what differences would I find if i used 12au7 or 12 ax7 valves? Any impact on volume, tone or gain?</p> <p>Third,(and this is embarrasing), when I took the back off for a peek inside the speaker wires came off the terminals. Which colour should go to which terminal??</p> <p>Thanks for your help. </p>