I tried this on my powerscaled LP Standard amp. I set voltage down to approx 100v. With an 8 ohm speaker plugged into the 4 ohm tap, the amp pretty much sounded the same. I also tried it in the 16 ohm jack...it sounded slightly duller but not a big difference. I tried this with my guitar plugged direct to the amp an on the clean channel. The power amp is pp KT66's into a 8k primary toroidal OT.
Throughout the voltage range on the powerscale control, the amp retains most of its tonal character, minus the psycoacoustic effects of a loud amp.
I've been kind of curious as to how important impedence matching is in guitar amps. Guitars have a relatively narrow freq. range, so picking the primary impedence to get an operating point that provides maximum power/bandwidth isn't necessary like it is with hifi...or at least that's my understanding at this point.
OT Impedance Match with VVR
Moderators: pompeiisneaks, Colossal
Re: OT Impedance Match with VVR
I tried this on my powerscaled LP Standard amp. I set voltage down to approx 100v. With an 8 ohm speaker plugged into the 4 ohm tap, the amp pretty much sounded the same. I also tried it in the 16 ohm jack...it sounded slightly duller but not a big difference. I tried this with my guitar plugged direct to the amp an on the clean channel. The power amp is pp KT66's into a 8k primary toroidal OT.
Throughout the voltage range on the powerscale control, the amp retains most of its tonal character, minus the psycoacoustic effects of a loud amp.
I've been kind of curious as to how important impedence matching is in guitar amps. Guitars have a relatively narrow freq. range, so picking the primary impedence to get an operating point that provides maximum power/bandwidth isn't necessary like it is with hifi...or at least that's my understanding at this point.
Throughout the voltage range on the powerscale control, the amp retains most of its tonal character, minus the psycoacoustic effects of a loud amp.
I've been kind of curious as to how important impedence matching is in guitar amps. Guitars have a relatively narrow freq. range, so picking the primary impedence to get an operating point that provides maximum power/bandwidth isn't necessary like it is with hifi...or at least that's my understanding at this point.
Steve