Mottlefeeder Posted Tuesday at 19:37 Author Posted Tuesday at 19:37 Getting there... The preamp layout The preamp circuit The capacitor bank and acoustic foam on the back wall. David Quote
Mottlefeeder Posted Tuesday at 21:20 Author Posted Tuesday at 21:20 (edited) Two more pictures: The back of the cab, with the amp connectors in the recess and the power connectors besides the battery compartment access. Amp and battery options - Top left: 90w per speaker Kenwood car amplifier Top right: 7AHr battery with fuse and one way only plug Middle right: Meanwell 12v 5A mains power supply. Bottom left: 15w per speaker ebay amplifier for home practice or 'jamming with a friend' - work in progress. Bottom right: 2.3AHr battery to power the smaller amp, giving a reduced weight rig for travelling - also a work in progress. David Edited Tuesday at 21:22 by Mottlefeeder Clarity 4 Quote
Mottlefeeder Posted Thursday at 20:03 Author Posted Thursday at 20:03 And finally, fully assembled, the slightly briefer briefcase: 6 Quote
rwillett Posted Thursday at 21:41 Posted Thursday at 21:41 On 22/04/2025 at 22:20, Mottlefeeder said: Two more pictures: The back of the cab, with the amp connectors in the recess and the power connectors besides the battery compartment access. Amp and battery options - Top left: 90w per speaker Kenwood car amplifier Top right: 7AHr battery with fuse and one way only plug Middle right: Meanwell 12v 5A mains power supply. Bottom left: 15w per speaker ebay amplifier for home practice or 'jamming with a friend' - work in progress. Bottom right: 2.3AHr battery to power the smaller amp, giving a reduced weight rig for travelling - also a work in progress. David So is the idea a modular combo, allowing you to choose amplifiers and different power sources for different options? If so I doff my cap to you sir, if not, I still doff my cap as it looks great. I'm impressed, Rob Quote
Mottlefeeder Posted 12 hours ago Author Posted 12 hours ago 15 hours ago, rwillett said: So is the idea a modular combo, allowing you to choose amplifiers and different power sources for different options? Yes, that's the plan. Most of my busking is done on 240v from street furniture or battery power packs provided by the event organisers. For those I would use the Meanwell power supply. Where there is no 240v supply I would need a little under 2 × 7AHr batteries to run for the 5 hour set. For open mic nights, and / or Victorian pubs where the only power socket is on the wrong side of a gangway, I can play for a couple of hours on one battery. For 'acoustic' rehearsals and the like, the smaller amp and battery will reduce the weight by about a third. David 2 Quote
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