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Thread: Next PRS amp metal?

  1. #41
    Quote Originally Posted by Em7 View Post
    As I have mentioned in the past, tube technology and spouse-friendly home sound pressure levels are mutually exclusive. A 5W amp is roughly half as loud as a 50W amp. The human ear responds to sound intensity on a logarithmic scale. It takes a 9dB reduction in sound pressure to equal a 50% reduction in perceived volume. Reducing output power by 50% results in a 3dB reduction in sound pressure; therefore, a 9dB reduction in sound pressure requires us to reduce power by a factor of 8 (23). In order to achieve a perceived volume level that is 1/4 the level produced by a 50W amp, we need to reduce sound pressure by 18dB (a 26 reduction in power); therefore, a 3/4W amp is 1/4th as loud as a 50W amp (50 / 64 = 0.78125).

    If one examines the Blackstar HT-5 schematic closely, one notices that better than 90% of the amp's tone is generated by solid-state circuitry (the HT-5 is just an improved Marshall Valvestate amp). Basically, if one wants big overdriven tube tone in a home-friendly package, one has to emulate it using solid-state circuitry (or digital modeling) and linear amplify the output. Doug and his team are currently not staffed to design and build solid-state amps, which would mean having to outsource engineering and production.
    I have to strongly disagree. Marshall just did it with the JVM 1 watt anniversary amps. I have one. 5 tubes in this little box. There isn't a schematic available and to my knowledge no one has dissected one but this has to be 100% tube overdrive or darn close to it. There is more gain in this thing than a recto or mark....and it can be powered down to .1 watt. It can be played at 2am and won't wake a soul, without losing any character or drive.

  2. #42
    SuperD Boogie's Avatar
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    Quote Originally Posted by Drew View Post
    I don't think an amp is necessarily a one trick pony if it has super high gain...a lot of the PRS amp guys are probably on the older side and thus wouldn't want to pay extra coin for an amp that CAN do metal but is something they will never dive into.
    Completely agree with your first statement, but I don't see the correlation in the next one. Almost any amp is just a stompbox away from doing convincing metal, but that doesn't have anything to do with age. Though I've never played in a metal band, I gigged a Boogie MkIII - arguably one of the most metal capable amps ever made - in modern and classic rock genres for 23 years. It was capable, but I didn't leverage that character of the amp. Every once in a while I just have to let my inner Petrucci out. I'd venture to say that much of the PRS player population have muti-genre interests regardless of their age.

    Quote Originally Posted by DirtyMoonsRJT View Post
    ...having had amps by many of these manufacturers I have used them in many circumstances for music that would be the antithesis of what they were designed for...

    the right cab is really important too....as is speaker selection.
    amen, brutha!

    Quote Originally Posted by Em7 View Post
    ... A 5W amp is roughly half as loud as a 50W amp.
    Absolutely true, but the perceived volume due to bass response is dramatically different. And the frequency range of the average MOP scooped Boogie, though dramatically less than Roy Clark blasting on a Twin, doesn't sound anywhere as cool with an attenuator and the master at 2. Without the bass performing CPR on your chest, it's just not metal...and that can't be accomplished with a 5W amp. That's strictly my opinion.
    Last edited by Boogie; 07-26-2013 at 11:10 AM.
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  3. #43
    deus ex machina
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    Quote Originally Posted by Drew View Post
    I have to strongly disagree. Marshall just did it with the JVM 1 watt anniversary amps. I have one. 5 tubes in this little box. There isn't a schematic available and to my knowledge no one has dissected one but this has to be 100% tube overdrive or darn close to it. There is more gain in this thing than a recto or mark....and it can be powered down to .1 watt. It can be played at 2am and won't wake a soul, without losing any character or drive.
    The JVM is not a bad sounding amp, but it does not sound like a large Marshall in miniature. A large part of the cranked Marshall sound is the power pentode-based output stage. Pentodes distort differently than triodes, especially small-signal triodes. The complex upper-harmonic bite of a Marshall is due to the use of pentodes in the output stage. That's why a Marshall loaded with 6L6s or 6550s (both of which are beam power tetrodes) does not sound like a Marshall loaded EL34s (true power pentodes).
    Last edited by Em7; 07-26-2013 at 08:01 PM.

  4. #44
    Senior Member Chris528's Avatar
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    I'm leaning towards the HT5 Metal unless there's a chance PRS will come out with a low wattage metal amp to go with their \m/ pickups.
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