COINCIDENT FRANKENSTEIN 300B STEREO

@lpretiring

A few years ago a friend had the Tekton Double Impacts and asked if I could bring my Frankenstein mono blocks over. I was happy to do so. The 8 watt SET drove his Double Impacts exceptionally well. No issues or strain/stress at all. His listening space is roughly 15x18 feet with 8 ft ceiling.

My Frankensteins lack a 4 ohm speaker tap. I have the early edition of this MK II (2009) amplifier which has 8 and 16 ohm taps. Newer models have 4 and 8 ohm taps. We used my 8 ohm tabs. So could potentially be even better matching with a 4 ohm tap.

These speakers are an easy load.
They are 4 ohm nominal but probably a very flat impedance curve and no steep phase angles to deal with. I don’t know how close the stereo version is to the mono block version however. If pretty close, then no problem.

Charles

I think you can’t compare stereo and mono Frankensteins. The maximal power is not the only important thing. Is even much more important that stereo and mono have different driver tubes and power supplies.

I don’t have Frankenstein amplifier but I have my DIY 300B amplifier that I did dozens changes and tweaks. I can say, for example, changing powers supply capacitors value, type or model can make more impact on sound than changing of output transformers. Or increasing current of driver tube can change sound dramatically. The amplifier with weaker driver, smaller and sheared between two channels power supply can’t sound similar to monoblocs.

That’s why I acknowledged that I don’t know how close the two Frankenstein models are. I do know that Israel Blume won’t present a new product to market if he does not think it is worthy. My suspicion is that it may not equal the mono block s exactly 100% (As is often the case between stereo and mono blocks) but knowing him , it will be very good. @paul_lindemann is very pleased with his stereo Frankenstein.

Charles

I also would prefer mono block in the right situation; however, my existing set up makes that conversion possibly more challenging than I feel like undertaking. 

With three new pieces recently added that stepped in the right direction, I feel I'm pretty close to having music reproduction I'm content with. So, with that in mind a very good properly matched stereo amp I'm hoping will fit the bill.  

   LP

paul_lindemann Are you familiar with the Willsenton R300? If so, how would you compare the sound between the two amps"