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Thread: Rhosgobel Tent At TOT

  1. #5536
    Administrator Aragorn's Avatar
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    Quote Originally posted by modwiz View Post
    The one one the left is my amp with what is called a TV front.

    On the right is the one I built for a friend and it is a narrow panel.

    The cabinets were built by Weber, the source of the amp kits as well. Custom colors and grill cloths are available and as one can see the results can be very different.

    Attachment 2621

    What's the speaker size in these babies? And I reckon they're alnicos?
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    8" speakers and they are both alnico. The darker blue amp has the same speaker as the 1200.00 dollar model that Fender is currently making. It is a Weber 8" Signature S. I use their British voiced Blue Pup speaker. An 8" version of their iteration of the Celestion Blue Bell. I have their 12" version as well, with a hemp cone, Weber calls it the Blue Dog. The Blue Pup is a paper cone.

    I like British voiced speakers with American 6V6/6L6 tubes, which I personally prefer over 'British' voiced EL84/34 tubes.

    Weber makes all their speakers by hand and they are the only speakers I will use now. The best articulation I have ever heard from any speaker.
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    A little more detail and eye candy for guests and Aragorn, who always appreciates more technical data.

    Both 8" speakers have a 7 oz Alnico plug magnet, with the Blue Pup having a boosted magnet, and a 1" voice coil. Both are rated at 15 watts.

    Two pics of Signature 8S cone and a rear view and then the same for the Blue Pup.

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    The greater ribbing of the Blue Pup speakers makes for less break-up of the speaker cone. Because the Champ cannot produce a single note without some harmonic distortion added (what makes the Fender Champ so revered), regardless of the volume, added speaker break-up was not what I wanted.

    I wanted to hear the tubes and the 5F1 circuit sing with their own voice.

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    Last edited by modwiz, Yesterday at 05:32.
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    Quote Originally posted by modwiz View Post
    The greater ribbing of the Blue Pup speakers makes for less break-up of the speaker cone. Because the Champ cannot produce a single note without some harmonic distortion added (what makes the Fender Champ so revered), regardless of the volume, added speaker break-up was not what I wanted.

    I wanted to hear the tubes and the 5F1 circuit sing with their own voice.
    Well, I'm no expert, but what you're saying here corroborates my own understanding of things.

    I personally always associate speaker distortion with a fuzz-like sound, and fuzz is great in its own time and place, but I generally prefer the speakers to sound as clean as possible, because adding distortion is always going to be easier than taking it away, and you want to be able to get a clean sound even at higher volumes.

    Now, as I said elsewhere already, I have no real experience with 10" speakers, let alone 8", but I have so far always been happy with 12", and my current rig ─ Marshall ─ has four 12" speakers. It's a bit too loud for playing at home, and perhaps even for small venues ─ although I've used it for that ─ so perhaps a 2 x 12" would be preferable for most circumstances.

    Earlier I had a solid-state Traynor 1 x 12" combo, but that was definitely not loud enough for rehearsals or gigging ─ or at least, not in the band I was in at the time. We started off as a progressive rock band, but in the end, it was almost all punk rock, and my stuff wasn't being played much anymore. But for a small venue ─ like the jam sessions that I partook in back in 2003 ─ I can definitely see a 2 x 12" working perfectly fine.

    Of course, at the time, I was plugged straight into the mixer, without an amp of my own present. It didn't sound as good, though, but then again, I wasn't using speaker simulation at the time ─ I didn't even realize I needed it.
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    Might as well post my review of the 5F1, (Champ) amp. Taken from the Weber website and copied here. I am friendly with "CJ" who runs the operation and he treats me well. Did my best to write a review and give his company good 'props'. They are well deserved. Excellent customer service.

    Wow! What a great amp and it has to be heard to comprehend why people rave about this amp or, the 5F1 circuit especially playing through a Weber 8″ speaker. I now have two builds finished. One for myself and another for a friend who had to have one when she heard mine. She plays an electric acoustic guitar, an older Stratacoustic, and loves the harmonic distortion it adds. She plays the amp with the volume at 3.

    I used all stock parts provided by Weber except for fuse holder, pilot light and a 1/4 inch jack for the speaker output. My kit came with chinese tubes. They are screamers. I followed the layout and used the boards provided. Fired up the first time. I have a Blue Pup in mine and love it. It is the circuit making the magic and any good 8″ speaker from Weber will sound great in it. Blue Pup gives a nice shimmer to the essentailly flat tone of the circuit. The 25 uF bypass cap on the first cathode of the pre-amp tube, coupled with the 1.5K resistor sets that sweet tone. Bass E string at near amplitude parity with the with the high E. No mid scoops in this signal. Weber PT, WO22772, is great and has more than enough power at 100 mA. OT, WO22905 does a great job as well. My third build will use the WO22905M so I can use and 8 ohm speaker and have an extension speaker (8 ohm) output that would use the 4 ohm tap.

    My second build did away with the boards and overall layout. I used terminal strips and did away with some wires. I also followed Rob Robinette’s advice with regard to grounding and the results were a very quiet idling. Power section, including 6V6 cathode biasing and the plate resistor ground to this bus. Pre-amp tube, volume and inputs jacks ground to another common bus. Only one input jack needs to be grounded since they are connected and one ground for them both is enough. Also, speaker jack(s) are grounded by the black wire and need no chassis ground.

    Weber tests all of their components and the PT, OT and caps/resistors provided will give great sound. The tone is in the circuit design and as long as components perform properly the 5F1 goodness will emerge. Astron caps in the power section would have cost 8 times more. I cannot imagine an eight-fold increase in tone. That is for sure.

    I will stick to what Weber offers. They work well.
    "To learn who rules over you simply find out who you are not allowed to criticize" -- Voltaire

    "Great minds discuss ideas; average minds discuss events; small minds discuss people."-- Eleanor Roosevelt

    "Misery loves company. Wisdom has to look for it." -- Anonymous

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