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Re: M7B DATS Cabinet Impedance Sweeps (Pics)
So it looks like system tuning frequency Fb ( the minimum between the two impedance maxima) may have drifted a tad upwards to around 42 Hz. Arguably should be around 38 Hz. For the sake of discussion…2 · -
Re: MW6500 DATS T/S Parameters Revised (Pics)
Unfortunately this is all we have for the T/S Parameters of the MW6500 and notably missing is the Bl, which can be calculated from what we do know if we assume that the avg. Mms obtained by MrGeology…1 · -
Re: Looking for help identifying and dating fathers Polk Audio 10s
Yeah. Yet another thing is that at some point they went to a silver color plated (tin probably) fuse holder and the picture from the OP is the unplated brass one. My 79 7Bs had the brass. I have a 1-…2 · -
Re: Looking for help identifying and dating fathers Polk Audio 10s
SL1000: 4.485" x 3.039" Peerless datasheet: 114.5 +0.3 mm x 80 + 0.3 mm Peerless (one of mine date code 3577): 4.576" x 3.135"2 · -
Re: Looking for help identifying and dating fathers Polk Audio 10s
We don't need no stinkin' time machines 🤣. We have old magazines. Here's a Polk advertisement with the early 10B with SL1000 and black basket midwoofers and passive radiators and you …3 ·
