Polk Monitor 7 info, specs.

MitsuMan said:
Love my 7B's. I've not hear the original, what's the main differences between the 7A and 7B (with the Peerless tweeter with the tiny hole in the center)?
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The visual differences of the early 7A is the plain paper PR, no coating and Velcro dots to attach the grill. IIRC, the mid-driver is plain paper as well. Polk made a lot of changes on the fly back then, so you'll see different versions of the 7A.
 
I’ll get some pics of my early 7 speakers and the A version that I bought from the same guy.
 
Here’s pics of the “7” box and back, showing the terminal strips.
Passive radiator is 8” and made of paper, as seen in previous pic.
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Here’s pics of the “7A”.
It has the larger passive, but made of paper!
Both the 7 and the 7A have the Peerless tweeters with no hole.
I don’t have the boxes for these.
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Here’s the destroyed grilles from the 7A speakers!!! ( I need to find a pair)
And the original wires supplied by the audio dealer for the 7. 18 gauge!!!
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Damn, bummer about the grills. And that's cool to see the originals. I couldn't see the tiny hole in the Peerless tweeter like my 7B's have. Is that a later change as well? Crazy to see that style of terminal strip as well, reminds me of the ones used on McIntosh amps.
 
odcics2 said:
Here’s the destroyed grilles from the 7A speakers!!! ( I need to find a pair)
And the original wires supplied by the audio dealer for the 7. 18 gauge!!!
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Anyone with a CNC machine near you? You can have a new set of grill baffles made out of MDF using the old ones as a guide. I know someone with 3D printers and laser cutters. Hopefully he will get a CNC machine soon. When he does he will be my next best friend. :D
 
Is there a brand or level of capacitor upgrade for the crossovers that hits a sweet spot for value? Seems like a guy could spend more that the cost of these speakers. Would like an upgrade, but don’t want to brake the bank. Thanks for your thoughts!
 
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The Peerless tweeters that Polk used with a hole in the center of the cloth dome...
See pics above: unholey tweeters were used in early production.
 
Absolutely loved the 7c's I purchased back in the mid 80's. My bro-in-law has them now. We rebuilt the X-over 10 or so years ago when he bought them. They still look and sound great.
 
Could not agree more! I've always hoped that I would find a reasonably priced speaker in this class. Has not happened yet. It compares well with my Mirage SM-3. Both very simple 2-way designs with stunning sound.

Generally I drive the Polk Monitor 7 with a Dynaco Stereo 70. And use them in a mid-field situaltion--about 6 to 9 feet away, elevated to ear level, and with a few rugs and books and curtains.

Really hard to beat. But I will say that they sound best playing combo jazz, chamber music, and acoustic folk-rock. I mean, play what you like but these are beautiful sounding at any reasonable volume and within a reasonable frequency range. They are not PA material, but who wants that? They are not surround sound boomers. But, again, who wants that?

I have, frankly, never heard direct-to-disc jazz trombones produced as well as on Monitor 7s. Or Keely Smith's pop vocals. Or Laurindo Almieda's acoustic guitar.
 
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