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pocket_groover's Recent Activity


  1. pocket_groover replied to the thread Tiny Combos.

    A TB member has a recently released PJB Bass Cub Pro on sale in the classifieds. It's the newest model with 120 watts with a 240 watt...

    May 14, 2021 at 5:31 PM
  2. pocket_groover liked OregonJim's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    What you are missing is resistance. Power also equals voltage squared divided by resistance. In order to get 720W from a 12V/60A...

    May 12, 2021 at 1:08 AM
  3. pocket_groover liked OregonJim's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    Hold on. How do you expect to magically increase the voltage to the speaker? The power supply voltage is the MAXIMUM voltage you can...

    May 12, 2021 at 1:07 AM
  4. pocket_groover replied to the thread Why So Few Affordable Battery Powered Bass Amps?.

    What is missing here is that the output transformer of the tube amp reflects the 8 ohm impedance of the speaker to a much higher...

    May 12, 2021 at 1:04 AM
  5. pocket_groover replied to the thread Why So Few Affordable Battery Powered Bass Amps?.

    I don't think I'm missing the current issue. Yes, the 12v supply has to provide a lot of current to the REQUIRED DC-DC converter in...

    May 12, 2021 at 12:57 AM
  6. pocket_groover replied to the thread Bassists of the '60's Club..

    Willie Weeks on bass!

    May 11, 2021 at 8:04 PM
  7. pocket_groover liked TheMaartian's post in the thread Bassists of the '60's Club..

    That song sure does play well live. Here's another fav version. [MEDIA]

    May 11, 2021 at 8:03 PM
  8. pocket_groover liked seamonkey's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    It says "Max Power" Pioneer shame on you for a fake marketing spec. Although it probably does have a DC-DC converter it is going to be...

    May 11, 2021 at 7:33 PM
  9. pocket_groover liked amper's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    If you want a busking rig, just take a deep-cycle SLA or AGM battery, and connect a car stereo amp to it. You can use a standard...

    May 11, 2021 at 6:55 PM
  10. pocket_groover liked OregonJim's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    Agreed. The conventional AC-powered stereo system that I put in my RV was a power hog. The internal power supply (non-switching)...

    May 11, 2021 at 6:55 PM
  11. pocket_groover liked amper's post in the thread Why So Few Affordable Battery Powered Bass Amps?.

    The Pioneer GM-A5702 costs about $150, weighs about 5 lbs, and will deliver a minimum of 480W into 4 ohms in bridged mode at 14.4 VDC...

    May 11, 2021 at 6:54 PM
  12. pocket_groover replied to the thread Why So Few Affordable Battery Powered Bass Amps?.

    Unless the amplifier had a DC-DC converter, running it off 12v directly would not produce very much output power. Since power is V^2/R...

    May 11, 2021 at 6:54 PM
  13. pocket_groover replied to the thread Bassists of the '60's Club..

    One of the few videos with Jamerson playing live. Looks like he's plugged into a Fender Showman silverface (Dual?) Good stuff. Great...

    May 10, 2021 at 11:49 PM
  14. pocket_groover liked SoulReflection's post in the thread Bassists of the '60's Club..

    [MEDIA]

    May 10, 2021 at 11:47 PM
  15. pocket_groover replied to the thread Why So Few Affordable Battery Powered Bass Amps?.

    Another great post for something I didn't consider. Thanks for pointing that out. I assume SMPS is "switched mode power supply"? I've...

    May 9, 2021 at 5:33 PM

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