Non ADA Gear > Amps
Koch ATR-4502 Power Amp
rabidgerry:
Ok tried it last night for a few hours.
It seems loud enough running at 8ohms each side (L-R). I have yet to test it with our drummer. My ears where ringing badly when it was up about half way (I didn't use ear plus as I wanted to hear as true as possible). I'm hoping it does have the volume I need. Early signs are good.
I found I needed both voicing switches engaged, deep and presence. One thing I would say is that the should have given the amp pot controls for these functions without having preset switches. It's much more useful to be able to tailor these regions like on my Velocity power amp. At gigs I am usually supplied with 4x12" cabs one for each side so I get lots of bottom end, however I don't have 4x12" in my rehearsal room, I have 4 2x12" cabs so I usually need a low end bump somewhere and with the Rocktron I can dial in low end using it's reactance controls. Not a deal breaker by any means, but I like a controls better than setting switches.
Feel wise, it felt very elastic, spongey, that tubey feel I was told I would get is definitely there. Harmonics seem a little more alive. That being said, I think the Roctron Velocity feels very similar. I need more time with it but I think it is a winner. It's solidly built, that's for sure. Clean and simple design. Lets see what it can do in the band context............................
rabidgerry:
seems I have a very good amp for FREE!!! The dude has not responded to my emails trying to pay for the amp and he has sent me one with a blemish or two, most notably the l.e.ds for one of the heat protection circuits is missing or broken. I wonder can I replace it?
Well the amp appears to be loud as hell! Very responsive and very dynamic. Not sure what way the fans work, I thought they would be on all the time but it seems only when the unit gets hotter may be? I dunno.
rnolan:
Hey RG, it's good it's loud enough :thumb-up:
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