Fender Tube Amp Woes

Discussion in 'Amps and Cabs [BG]' started by BassJunkie730, Feb 28, 2005.


  1. BassJunkie730

    BassJunkie730

    Feb 3, 2005
    Brooklyn
    Hello venerable TB'ers,

    I have a dilemma. About 9 months ago I bought a Fender Bassman 70 (with the Ultra Linear output section). I bought is modified though. I was told that the amp had been "blackfaced" and I can see that a choke has beend added to accomodate the 6550 tube change. I take black-facing as decreasing headroom - however the amp ran fine and all was good. Until... I started playing with a band. then the amp just couldn't hold up anymore. I was using a 410 at the time and I was wondering if the cab is the critical flaw. Iwas also using a Berg NV610 which sounded great. Unfortunately I didn't get a chance to play in the band situation with it because I started to get some serious crackle and farting (at certain notes especially low notes). I really really want to keep this head, but since I basically dime it - I wonder if i'm beating the **** out of it for a volume level that I may never get. I do also have an Avalon U5 which I adore.
    So How can I improve my stage volume with a 100watt (possible, I don't know the 6550 pair runs at now though) tube head, since I'll send the rest of the signal FOH via my U5.

    All in all it really is a killer setup my Dirnt P-bass into the fender bassman 70 into what could be a bergie nv610 or at least a 1-15. I just need more volume - you can keep your headroom :)

    Thank you
     
  2. The 0x

    The 0x

    Aug 24, 2003
    Timonium, MD
    Look for a Fender Bassman 135 on ebay. Same amp, but double the power.
     
  3. Ben Clarke

    Ben Clarke Liquidating to fund a new business. Buy My Gear!

    Jan 6, 2005
    Western NY
    That'll only give you 3dB more on a good day.

    Once assured that the amp and tubes aren't beat, a more effecient speaker should get you what you are after. It did for me. I use a 2x6L6 amp (might make 50W) with 106dB/W/m speakers. The volume control hangs around 10:00 for practice (haven't gigged it yet). Electric blues in a live room-not overly loud, but I've got plenty of headroom now.
     
  4. BassJunkie730

    BassJunkie730

    Feb 3, 2005
    Brooklyn
    If I'm not mistaken a stock VB-4 is 100watts. Also the Hiwatt DR103 is a 100 watt amp. Both amps are known for their overdrive, which I am into. But what about volume? specifically stage volume. Anyone have great experiences with loud rock bands and a Vb-4 through an 810? or is there a point where my 100watt tube amp (from a pair of 6550s - 100watts if i'm lucky) just can't get any louder? Anyone know of a great speaker combo for a relatively low wattage tube amp? I am aware of the Berg NV series and of course the Ampeg stuff but anything else - a 15" that I am really gunning for is the Eminence B15 which has a relatively high sensitivity. So maybe what I am really asking is what's the loudest most efficient cab or cab combination I can get for this head? Thanks
     
  5. Ben Clarke

    Ben Clarke Liquidating to fund a new business. Buy My Gear!

    Jan 6, 2005
    Western NY
    I use the DR250a and Tuba24. More info can be found at www.billfitzmaurice.com

    I can recommend a builder if you're interested. He did a great job on mine. They'd go loud and crazy low.

    Where are you located?
     
  6. BassJunkie730

    BassJunkie730

    Feb 3, 2005
    Brooklyn
    I am in New York City. I've read about the Tuba24. My only concern is portability - but if all I need is one and it won't rattle the crap out of my bassman - that just may be worthwhile. Hmmm. Now you really have me thinking. but you said you're running a dr203 so you've got a 200watt amp whihc probably helps to provide headroom for the lows not to mention the huge partridge trannys in that amp. I have big transformers in the fender bassman 70 but not as big as the Hiwatt. but still if the tuba can give me a somewhat wide frequency response about 40 to 4Kand a ton of SPL for the given watts then sign me up.
     
  7. Ben Clarke

    Ben Clarke Liquidating to fund a new business. Buy My Gear!

    Jan 6, 2005
    Western NY
    The guy that built my speakers is in Rhode Island, so shipping wouldn't be too bad to the city. I don't have a dr203, the DR250a is the speaker that handles from 100Hz on up for me. It's on Bill's site, too. I'm using the amp section from my old Ampeg B-15N.

    The Tuba24 is really great down to about 30Hz. The response on the B string of my StingRay5 is very even all the way down. It's not flat down to 30Hz, but I don't find it necessary, and it sounds great.

    However, the Tuba24 won't really do much for you above 100Hz. It's really intended as a subwoofer to complement another box. Bill recommends (and uses) the DR250a. If you're looking for a single box solution, the DR250a would be a better choice. It can be tuned to get you low, but obviously not as low as the 250a and Tuba24 together.

    The Tuba24 is a bit awkward to get around tight corners & through small doors, but it's pretty light. Think of a newer 25-27" TV, but deeper. The 250a is super light.

    If you give up, sell me your Fender!