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Author Topic: Spectro Acoustics  (Read 86688 times)

boB

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Re: Spectro Acoustics
« Reply #180 on: January 05, 2020, 01:04:59 AM »

Hold on to those, TJ ! 

We'll use them in a new inverter or something !
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onanparts

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Re: Spectro Acoustics
« Reply #181 on: January 06, 2020, 05:22:45 PM »
Quote from: boB on January 05, 2020, 01:04:59 AM

Hold on to those, TJ ! 

We'll use them in a new inverter or something !

OK, an Inverter that does 350 WPC @ 4 ohms and 0.00000000000001% THD will be nice. Time-varying system behavior must be minimal or non-existent......and none of that THD+N crap! Just keep the notch filters in the drawer!  :)
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onanparts

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Re: Spectro Acoustics
« Reply #182 on: February 29, 2020, 11:49:46 PM »
Hmmm....so it was just the other day, really! It was.....

The mysterious RobKen Pre Amp, # 22 of 23 shows up. :)

Maybe next time I'm at Robin's he will pop the cover off for a few pics?



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I got the deluxe kit, it had a solar cell and a meter.

Midnite B17-10. 30kW Cont. 100kW Surge... Me/Myself/And/I

onanparts

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Re: Spectro Acoustics
« Reply #183 on: February 29, 2020, 11:52:47 PM »
And a "Nauti Rob" ??? Robin, you gots some splaining to do....:)



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I got the deluxe kit, it had a solar cell and a meter.

Midnite B17-10. 30kW Cont. 100kW Surge... Me/Myself/And/I

boB

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Re: Spectro Acoustics
« Reply #184 on: March 01, 2020, 01:18:37 PM »

The name on the back of the RobKen preamp is Greg Johnston...

Greg was an owner of Trace Engineering and Magnum Energy.

Steve Johnston's brother. 

I remember when Greg was one of the production leads at Phase Linear back in the early 1970s

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onanparts

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Re: Spectro Acoustics
« Reply #185 on: March 01, 2020, 08:28:33 PM »
Robin still has the working prototype of the SA P-202 amp. I did not get any good pics of it except for one SCAMP board. Again, next time up to Arlington maybe I'll have the chance to get some nice pics, along with more of Robins SA gear he is taking out of storage. All the SA gear he has is going in a big system soon to be up and running. :)


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I got the deluxe kit, it had a solar cell and a meter.

Midnite B17-10. 30kW Cont. 100kW Surge... Me/Myself/And/I

onanparts

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Re: Spectro Acoustics
« Reply #186 on: April 23, 2022, 12:30:41 PM »
Hmmmmm....been a couple years. I did say I would post some topless pics of the RobKen Model 5000. Well, I was out at Robins recently and he was looking for a good home for the RobKen and several SA prototype amps and pre amps. After twisting my arm just a little...I agreed to adopt them! :)

A few pics of the RobKen topless....More to follow!

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I got the deluxe kit, it had a solar cell and a meter.

Midnite B17-10. 30kW Cont. 100kW Surge... Me/Myself/And/I

ralph day

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Re: Spectro Acoustics
« Reply #187 on: April 24, 2022, 08:02:42 AM »
Spectro acoustic pre amplifier!  I win finally!
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ralph day

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Re: Spectro Acoustics
« Reply #188 on: April 24, 2022, 08:03:55 AM »
The only way my guesses are accurate...some broad hints  ;D
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