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Princeton Reverb versus Blues Junior

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  • Princeton Reverb versus Blues Junior

    Hi,

    Last night I played both my ?77 Princeton Reverb and my 90's era tweed Blues Junior for a side by side comparison (with my ?92 USA Reissue ?62 Strat). I set the master on 10 for the BJr so they were both similar in setup. Now note that the speakers are very different. The BJr has a C12N type speaker (stock Fender 50 watt). The PR has a Jensen C12R (25 watt) speaker. The C12R alone brings a TON of jangle and brightness to the PR. The C10R is the standard speaker on most 60?s PR?s. When I bought the PR, it had a generic Fender replacement speaker (Eminence no label type), which was actually very similar to the BJr. It was less bright and more midrange heavy. It had a larger magnet.

    But the main thing I did was play both at full volume to hear the distortion characteristics of each. Here's some insights I had:

    -------------------------

    PLAYED FULL VOLUME (10)

    Blues Junior sounded a lot louder at 10 that the Princeton Reverb. More Bass as well. Probably from the larger wattage speaker. Scary how loud it can get! When you have it 6-7, it had a nice warm distortion. It just oozes blues. I think that's its strong point in design.

    The Princeton Reverb, with the stock-type speaker, has a lot of brightness which you have to turn down to get some bluesy distortion out of. Otherwise it gets raw sounding. Seemed to have slightly less distortion. If I was thinking blues all the time, I would have kept the speaker it came with or get a blues friendly speaker.


    -------------------------

    PLAYED MEDIUM/LOW VOLUME (3-5)

    Blues Junior sounds overall pretty flat in terms of frequency response. You can't really take out the mids. It kind of dominates. Even with the Mid turned down all the way, you still have a lot of mids and not enough bright end (for me).

    Princeton Reverb has a really nice jangle and thinness to the sound. More scooped. The speaker is really accentuating that. It pushes the brightness (if treble on 10), which gives you that Clapton "Let It Rain" type Strat sound. Not everyone's cup of tea. But I love having the option to dial up the treble to get that. You can always turn it down for warmer sounds. It also helps with brightening my dark sounding ES335.

    -------------------------

    CONCLUSIONS:
    Noodling factor:

    I do like the ?noodling? ease of use with the BJr where you sit down in front of it, turn the volume to around 6-7, Master on 1-2 and jam away some Blues licks without killing your ears. The PR is more of a clean ?noodling? amp at lower volumes. For me to have more cranked sounds, I have to plug into boxes to get that.

    Love to keep both! But I think I really need to have the better clean sounding amp, which the Princeton Reverb gives me and couple it with a good distortion/overdrive pedal. When I jam, it?s mostly clean rhythm playing with distorted solos dropped in. I also want better spring reverb, which the PR has. The Blues Junior?s is mediocre.Having a tremolo is just add-on gravy. I also play with three different types of guitars: Strat, ES335 and a Ric 330/12. The ES335 being the darkest sounding. All three guitars really shine with the PR.

    Speakers play a major role in the tone. I chose the brightest speaker I could because I love that jangly, raw sound. Think early Johnny Cash picking, Surf style stuff, etc...


    To do: I?m going to try and play the Blues Junior through the PR speaker and cab using an extension cable. Curious to hear how the speaker sounds with it. If I do, I will post my thoughts on that as well. Also,will still look into attenuators. I also own a 60?s era Gretsch 6150T amp, which could be a nice candidate for attentuation. That thing rocks with my ES335.

    External speaker cab: I?d love to get one so I could take advantage of bigger sounds from both the Princeton Reverb and the Gretsch amp. I think my favorite sounds are from these low wattage amps.

  • #2
    Hot rodded Princeton Reverb amps

    A well tuned and slightly modified silver face PR with a good 12" speaker will simply destroy any Blues Jr. I've ever heard, no matter what the volume level.
    Also, if keeping the chassis stock is not a big deal to you, (since the cabinet is already wrecked as far as being 1977 "collectible") it is a simple matter to put a half way decent master volume in the PR.
    Bruce

    Mission Amps
    Denver, CO. 80022
    www.missionamps.com
    303-955-2412

    Comment


    • #3
      Master volume on PR

      Hi,

      People keep saying don't do a Master Volume because there's not enough preamp gain to make it worthwhile. What are your thoughts on that?

      Not that I'm expecting it's going to scream when I use the MV, but it would be nice to dial in the 6-7 range and make it sound like 3. But I do like the idea of having one.

      Also, a side note. This is the "dreaded" push/pull boost PR. But you know what? I actually like that it has this extra boost. The only thing is, you have to cut the treble knob from, like 7 to 3 to cut the treble boost. Or else, you get treble smacked! Once you cut it, you get some fat gain that's pretty usable. I almost would think you could just add some sort of treble cap that would cut the treble volume when you pull the boost knob.

      Comment


      • #4
        If you like REAL tone (dynamics, touch sensetivity, ANY low-end), DON'T install a master volume! Only Metal players, who have to use additional processing, in addition to any of the amp's own break-up (depending on the amp, of course), can get away with using any master volume, and still sound half decent.
        You need to hear your POWER tubes doing the break-up, NOT you're preamp tubes, otherwise it has a "processed" sound to it.
        Mac/Amps
        "preserving the classics"
        Chicago, Il., USA
        (773) 283-1217
        (cell) (847) 772-2979
        Now back on Chicago's NW side in Jefferson Park!
        www.mac4amps.com

        Comment


        • #5
          There's also a very simple mod for the Blues Junior where you add a wire to ground the center lug of the middle pot, which makes it so you can dial the mids out. There's a bunch of simple mods.

          The BJ has a fairly straightforward circuit with a good design/implementation. Fender uses decent quality transformers and speakers in their amps, which give them a really nice tone.

          Their consistency throughout the years is quite impressive, since you can say the same about almost all of their amps - Tweeds, Blackface, Silverface, Reissues, etc.

          The secret to great tone in Fender amps is fine tuning them, with a few having incredible tone off the rack.
          See the birth of a 2-watt tube guitar amp - the "Dyno Tweed"
          http://www.naturdoctor.com/Chapters/Amps/DynoTweed.html

          Comment


          • #6
            I did the Mids mod

            Hi,

            I did do the mod that effectively dials out the mids completely, and it did make a subtle difference. Took a little more out, but still I think the voicing of the amp is just a more midrangey type amp.

            This weekend, I did get around to playing the Blues Junior through the Jensen C12R speaker in the Princeton Reverb cabinet using an extension speaker cable. It was a really good sound comparison. One cab. One speaker. Two different amps.

            Results: The Blues Junior tone has more midrange and a little less high end than the PR. Sounded good through it though! I think if I was to keep the Blues Junior, I'd pair it with some sort of larger cab setup with brighter speakers. Maybe a 4x10" Jensen C12N's for jams.

            Comment


            • #7
              If you still have the Blues Jr. & have not already checked out this link, you should!

              http://home.comcast.net/~machrone/bluesjunior.htm

              This guy is the Blues Jr. guru!

              Best of luck, Troy

              Comment


              • #8
                I did check his mods site out. Almost went ahead with it, but decided to go the PR route instead. Craigslisting it now.

                Comment


                • #9
                  Originally posted by Bruce / Mission Amps View Post
                  A well tuned and slightly modified silver face PR with a good 12" speaker will simply destroy any Blues Jr. I've ever heard, no matter what the volume level.
                  Also, if keeping the chassis stock is not a big deal to you, (since the cabinet is already wrecked as far as being 1977 "collectible") it is a simple matter to put a half way decent master volume in the PR.
                  Ditto plus! The Blues Jr is a MV amp that distorts a lot, with a LTP phase inverter and EL84 tubes instead of 6V6's. Of course, it's fun to play- it's like having a stomp box in your signal path. But the pure tone from a nice Princeton Reverb is absolutely killer! Good old fashioned Fender blackface tone for days...

                  Steve Ahola
                  Last edited by Steve A.; 10-30-2008, 08:12 PM.
                  The Blue Guitar
                  www.blueguitar.org
                  Some recordings:
                  https://soundcloud.com/sssteeve/sets...e-blue-guitar/
                  .

                  Comment


                  • #10
                    I know I"m resurrecting an old thread, but how about a Power Attenuator on the PR instead of a Master Volume. A Weber Mass Lite will cost you around $150 and leave the PR unmodified.

                    Comment


                    • #11
                      modding Princeton Reverbs

                      Originally posted by Bruce / Mission Amps View Post
                      A well tuned and slightly modified silver face PR with a good 12" speaker will simply destroy any Blues Jr. I've ever heard, no matter what the volume level.
                      Also, if keeping the chassis stock is not a big deal to you, (since the cabinet is already wrecked as far as being 1977 "collectible") it is a simple matter to put a half way decent master volume in the PR.
                      Hi Bruce, what mods would you suggest beyond using a 12 inch speaker and adding a master volume?

                      Comment

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