![]() ![]() Regardless, should you want to lessen it somewhat, try the Modern Smoothing setting (44uf), and the Warm Bias setting (82 Ohm). The setting of the Treble control has a lot to do with emphasizing or de-emphasizing the amount of underertone. In order to refresh our memories, earlier today we compared an AC30CC to a circa 63' vintage AC30 Top Boost and found the vintage model to have a very similar and equally present undertone. It's not uncommon to hear various levels of undertones and overtones on many amp designs. Rather it is a characteristic of the AC30CC circuit, and in a sense, part of the overall voicing of the amp. In spite of what you've read or may have been told, the undertone you're hearing is not the result of a "design flaw". I apologize for the delay, thank you for hanging in there. We received an email from a worried customer who owns an AC30CC2X after reading that post. The guys won't listen to reason or reality and his account of what we said isn't factual. Here is something from Mitch Colby in the Plexi Palace forum where he is addressing the issue, from some rather vocal detractors of the cc series. You could use a solid state rectifier, which would allow you add more capacitance, although it would be an experiment, as obviously the sound would be affected." ![]() Old AC30s had very small value first capacitors and can really have this problem a lot, as do other class AB amps with tube rectifiers and small filter caps. Having a tube rectifier increases sag also.Ī lot of amps will exhibit this to a greater or lesser extent. While it can increase an amps ability to produce low frequencies, it will make the amp have less sag and may also make the amp sound more sterile. Also, adding more capacitance has an impact on the sound of the amp. ![]() ![]() If the amp uses a tube rectifier, the size of the first filter cap has to be kept under a maximum value that the rectifier can handle. While adding larger filter caps can help reduce it or eliminate it, you may not want to do this to an amp or may not be able to. The sag that occurs when an amp is pushed (which manifests itself as a sort of compression - which we like!) causes a 120Hz signal from the power supply to modulate the actual guitar signal, resulting in ghost notes. "Ghost notes can quite often be caused by the amps power supply, especially in an amp with small or relatively small value filter capacitors. MUSIC BOX IS A STANDING ROOM ONLY VENUE UNLESS OTHERWISE NOTED.I just read something re the same question. STALK US: Twitter + Instagram: | /MusicBoxSD | | The Music Box (619) 795-1337.īOX OFFICE HOURS Monday - Friday 11:00am - 4:00pm PARKING: Street parking and paid lot parking available. $106 Indigo Grill + Show for 2 (online only - limited availability) *VIP seating will be limited to 30 seats in the first 3-rows and some swag from the show! VIP* day of show Seated Ticket Price: $52 Genre: Homage to the movies of TOM CRUISE! Live action comedy! Not on the e-mail list for Presales? Sign Up to be a Music Box VIP! and you will never miss a chance to grab tickets before they go on sale to the general public again! From the guys that brought you LA's longest running show, Point Break Live, comes Top Gun LIVE! The ultimate Tom Cruise interactive homage. ![]()
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