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Matthew Polk on the Monitor 7, and more...

thedelihaus

Nocturnal transmissions
An exerpt from TNT Audio's interview with Matthew Polk-

"....The early 70's was an interesting time for our industry. Especially in the UK there were some great sounding, very sophisticated speakers being produced like the Spendors and original Quad ESL's...These systems had great mid and vocal performance but were also pretty difficult for us Americans to live with. They wouldn't handle any power, had crappy bass and blew up if you looked at them sideways. In the US we had a whole bunch of basically terrible sounding loudspeakers...But, true to what the US market wanted, they went loud and produced gobs of bass.

I was impatient to have it all. I wanted the sophistication, great midrange and soundstaging of the European speakers with the bass, dynamics and sheer fun of the American speakers. I also wanted to do it for a price that most people could afford... Although I personally enjoy the high-end as much as any foaming-at-the-mouth audiophile, the real challenge is to make good sounding stuff that real people can afford and can live with...

Now, in our efforts to achieve this goal...we were one of the first to use small, quick drive units to drive a much larger passive radiator. The idea was to take advantage of the speed and detail of the small driver combined with the ability of the larger passive radiator to produce deep bass with good efficiency.

Our first really successful model, the Monitor 7 (introduced in 1974), used a 6.5 inch drive unit coupled to a 10 inch passive radiator with a 1" inch soft dome tweeter. Even today it's tough to beat the Monitor 7 for musicality and involvement in a speaker that can still go loud and produce genuine deep bass...

We were very clever in using simple system designs built around high quality components and making sure that we could use the same components in many different products. In fact, until 1990 we used nothing but 6.5 inch drivers in all of our home products.
We also tried to manufacture as many of our own components as possible ourselves. As you can imagine we became very efficient at making very high quality 6.5 inch drivers."

For the unedited version, and lots more neat stuff about Polk, go here-

http://www.tnt-audio.com/intervis/polk_e.html
 
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Funny that old Matt abridges his own history just a bit -- you don't suppose he forgot that the original Monitor 7 had an 8" PR, do you? :-)

Polk and I share an alma mater (JHU), and he was actually, briefly, a grad student in the Biology dep't (where I did my PhD) before he decided to make and sell speakers full time. His first dealer was Soundscape in Baltimore (just a bit north of JHU in Roland Park). In my college days, we would bring some beer over to Soundscape on Saturday just before they closed, and drink beer and listen to music with the proprietor (John Dorsey). Got to see Polk there a time or two, as well, and chat with him. This was long, long ago...
 
I'd say the 7A, but only because I have a pair :-)

The original 7 or 7A would get my vote -- Peerless tweeter. The Polkies claim that a later tweeter is very good or better (and still available from Polk), but I dunno. The original 7 has an 8" (rather than 10") PR, but it's been a LONG time since I heard a pair of the originals.

Polk has a very good set of forums (fora) at www.polkaudio.com
 
Mark,

I couldn't find a specific 7a speaker- the peerless tweet you mention, is that the one with the driled hole in the center?

Which one is the clearish, semi-transparent dome?
 
Thanks mhardy. I'll check the Polk site out. I have a lead on a set and I want to know what to look for when I go check'em out tomorrow.
 
Hey thedelihaus, is that a photo of some horrific injury you suffered?? Damn thing looks painful! :sigh:


Is Matthew Polk that scary-looking guy on all the ads? He had a really Crispin Glover-looking nose (Crispin Glover is the guy who played Marty's dad on Back to the Future and famously tried to karate-kick David Letterman in an interview.. Real nut job). Cool if you drank beer with him.
 
onwardjames said:
Hey thedelihaus, is that a photo of some horrific injury you suffered?? Damn thing looks painful! :sigh:


Is Matthew Polk that scary-looking guy on all the ads? He had a really Crispin Glover-looking nose (Crispin Glover is the guy who played Marty's dad on Back to the Future and famously tried to karate-kick David Letterman in an interview.. Real nut job). Cool if you drank beer with him.

Yes, that's my back- got hit by a speeder. Painful is right!!! :sigh:

Matthew Polk does indeed look like Mr. Glover- especially from his appearance on Charlies' Angels!
 
mhardy6647 said:
I'd say the 7A, but only because I have a pair :-)

The original 7 or 7A would get my vote -- Peerless tweeter.

At least some 7B's had the "holey" Peerless as well, my 7B's do. Great speakers...too bad Peerless discontinued that tweeter last year, it was a great one.

It didn't take long for remaining stock of that tweeter to disappear from the places that stocked them.

Todd in Beerbratistan
 
thedelihaus said:
Yes, that's my back- got hit by a speeder. Painful is right!!! :sigh:

Not to take thread off-topic, but are you better now?? Cause that just looks HORRIBLE. I'm currently seeing a chiropractor for an undiagnosed case of scoliosis. Getting better, but taking a long time.
 
onwardjames said:
Not to take thread off-topic, but are you better now?? Cause that just looks HORRIBLE. I'm currently seeing a chiropractor for an undiagnosed case of scoliosis. Getting better, but taking a long time.

Well, it left me in pretty rough shae as you can imagine. Let's just say my motorcycles are parked and my dancing shoes are retired, and I've always got a place to sit...

But I've got my hearing in fairly good working order. And my lovely friends here at AK treat me well.

By the way, I like your gear- always wanted to hear (and probably own) those Marantz Imperial 6s, got a Teac cd player, want some Yamaha amps and speakers, almost owned a Technics 616, own a Technics SA-80, and a few Pioneer pieces, have Polk M7s, plenty of Sansuis, new Onkyos, have a pair myself of JBL L46s, and Cerwin Vega HED CV-3000s. I like your style!

Now, back to Polk- anyone know what series the clearish/somewhat milky-dome was? Are those 7Cs?
 
The silver-faced tweeter is the SL-1000...it was in use in between the original Peerless and the SL-2000. The SL-2000's are awful and should be replaced (Polk has improved silk domes available), but the SL-1000 is by all accounts a close match with the Peerless...haven't done an A/B test myself, though.


Anyway, that was a great read...thanks for posting! I've always liked the quality of Polk products, and after a few years of unfairly dismissing them I finally let my ears be the judge (and not ego...Stereophile and the like can shove it), and use them almost exclusively. For the price, you simply cannot beat them. :yes:
 
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(in answer to the earlier question)... yes, Polk put (or had Peerless put) a hole in the center of the Peerless KO10DT domes... maybe to break up standing waves in the dome, or to alleviate pressure build-up behind the dome (e.g., alter the resonance characteristics)?
 
OK, so, while avoiding useful work (e.g., getting ready for a church building committee meeting tonight) I snapped a photo of the business end of one of my charmingly orange (they call it 'rosewood') vinyl Monitor 7A's, s/n 4900. I still like these guys quite a bit.

7Atweetwoofsn4900.jpg
 
thedelihaus said:
Now, back to Polk- anyone know what series the clearish/somewhat milky-dome was? Are those 7Cs?

As I remember, two tweeters had the opaque polyamide dome.

SL-1000: Had the brushed metal faceplate, same size as the Peerless faceplate.

SL-2000: Had the shaped plastic faceplate that was a bit larger than the metal faceplate.

Both were called the "Silver Coil Dome" tweeters. I believe the voice coil wire was silver plated copper.

Dave
 
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Toka said:
...The SL-2000's are awful and should be replaced (Polk has improved silk domes available)...

Oh goodness, are they really that bad? It's the tweet I have in mine... :sigh:

I don't think they sound that bad, but I've not heard polks with the others. I'm going to start a separate thread regarding the Polk tweeters, specifically about the tweeter, as as this thread title reflects more on the Polk interview I posted, and I think a clearer post on tweets is in order. Will post in a few minutes.

Thanks for the great posts here, please be sure to weigh in under the Polk tweeter thread I'm about to get going... :thmbsp:
 
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