MicroStatic Speaker Literature part 1

[dynaco_dan]

Hello there

This is the first page of the MicroStatic speaker literature.

Enjoy

278.zip

279.txt

280.zip

281.zip

[dynaco_dan]

Hello there again

This is the second page of the MicroStatic speaker literature.

Enjoy

282.zip

283.zip

284.zip

285.zip

[JKent]

Hi Vern

Just bought a pair of these and have been searching for info. You have provided some good lit and pics, but I was frustrated that a page of the review was missing. Do you still have it?

attachment 3 is MicroStatic20016.jpg (p 34 of the review. Says "continued on p 45")

attachment 4 is MicroStatic40019.jpg (page 46)

Do you have p45? Any other Microstatic info would be appreciated.

btw, I also read the other thread. Interesting stuff

http://www.classicspeakerpages.net/dc/dcbo...g_id=217&page=2

I'm attaching the pic from the ebay listing. Pretty fuzzy. Any other info you may have would be appreciated (even the basics like how to hook them up or how to take them apart)

Thanks Vern

Kent

[dynaco_dan]

Hi there;

I have nothing else to post here regarding these speakers.

[JKent]

Too bad. Don't know what happened to p 45 of that Stereo Review article--it's the flip side of p 46. which IS posted. Anyone else happen to have it?

Also interested in repair info. I bought these as a "second chance" offer, some time after they originally sold, so I'm guessing they may not be working properly. Could be a fun project.

[JKent]

Found this interesting page for Roger Russell, apparently the designer of the McIntosh speakers (funny you don't hear much about Mac speakers). He had earlier worked for Sonotone and was responsible for their switch from vented designs to acoustic suspension designs. He’s written a history of Micro/Acoustics here:

http://www.roger-russell.com/sonopg/micropg.htm

He has a wide range of interests and accomplishments. Check out the link to NoTone Audio! Also links to info on Scripto pencils, lightning, “mystery clocks”, high-priced speaker wire, column speakers, sci-fi, etc. etc. etc……..

http://www.roger-russell.com/#otherpages

He will also sell copies of that SR review, so if no one posts the missing page here I may buy it.

[JKent]

Well, they came today but the sound is VERY faint. I do get sound from each of the 4 drivers in each enclosure. Thought I'd replace the caps, maybe even the pots and slide switches.

Mine have the "nonremovable" backs but I removed them. Funny thing is, just like Vern's, the slide switch only uses 2 of the 3 lugs and the pot only uses 2 of 3 also. The attached pic is one of Vern's but mine look the same inside (except the caps are physically much smaller)

Any ideas? Anyone have a schematic? If the tweeters all produce "some" sound, what's the likely culprit? Does it make sense to replace the pots and sliders, or just the caps?

Sorry to be so ignorant...........

Thanks for any help

Kent

[dynaco_dan]

Hi there;

That photo was taken off of ebay.

I've never opened mine up.

[dynaco_dan]

Hi again;

Time expired on me again.

I have not seen a schematic of these yet.

How did you remove the non-removeable rear cover?

[JKent]

>How did you remove the non-removeable rear cover?

It's heavy carboard--just glued on, so I pried it off. Here it is:

[dynaco_dan]

Hi there;

I guess they were looking for a cost cutting measure.

They certainly found it.

Not as nasty to service as the earliest KLH speakers at least.

Thank you for that photo.

[JKent]

There must have been 2 versions of the Microstatic tweeter. According to the Stereo Review article, it has 2 1 ¾” drivers and 2 1 /2” drivers. And it measures 9 1/8 x 5 ¼ x 3 ¾. This is consistent with the “Technical Specifications” provided by Vern. Neither Stereo Review nor the TechSpec gives model number, and the second page of the review is missing.

I have a friend who said his are Model FRM-1 and they have 2 level controls.

Mine have only 1 level control, like Vern’s photos. According to Roger Russell’s web page, the tweeter is Model MS-1, has 4 1 ¼” tweeters and measures 4x9x5. That description is consistent with my tweeters—they appear to have 4 drivers of equal size, and the measurements are 4x9x5. They also appear to be solid walnut –not veneer.

A few squirts of cleaner/lube to the L-Pads and slide switches seems to have got them working and they sound good, but I’m still going to recap them. Each crossover has two 1uF 50v NP caps. I may leave the 25 ohm L-Pads alone.

[dynaco_dan]

>There must have been 2 versions of the Microstatic tweeter.

>According to the Stereo Review article, it has 2 1 ¾” drivers

>and 2 1 /2” drivers. And it measures 9 1/8 x 5 ¼ x 3 ¾. This

>is consistent with the “Technical Specifications” provided by

>Vern. Neither Stereo Review nor the TechSpec gives model

>number, and the second page of the review is missing.

>

>I have a friend who said his are Model FRM-1 and they have 2

>level controls.

>

>Mine have only 1 level control, like Vern’s photos. According

>to Roger Russell’s web page, the tweeter is Model MS-1, has 4

>1 ¼” tweeters and measures 4x9x5. That description is

>consistent with my tweeters—they appear to have 4 drivers of

>equal size, and the measurements are 4x9x5. They also appear

>to be solid walnut –not veneer.

>

>A few squirts of cleaner/lube to the L-Pads and slide switches

>seems to have got them working and they sound good, but I’m

>still going to recap them. Each crossover has two 1uF 50v NP

>caps. I may leave the 25 ohm L-Pads alone.

>

Hi again;

Here is a few photos from ebay over a period of time.

I sometimes just save photos and watch the action on ebay.

Sometimes I used to bid on such toys.

There is several different rear photos of the babies we are talking about.

The other photos is only some of the multi-tweeter units they used on larger full range speakers they sold as well.

The cabinets of our babies were made of solid walnut.

The original MicroStatic Tweeter Array drivers were 2 of one size and the other 2 slightly larger.

They may have changed 2 driver's sizes mid-stream.

They also dropped using Peerless tweeters for off-shore drivers, later as well.

Your caps are visibly smaller than the original photo I posted.

Perhaps a lower voltage rating?

A late thought, what if they changed the drivers and then started glueing the back's on to keep curious owners out?

How many owners or prospective owners of AR-2AX's and AR-3A's started looking into their grille clothes when news of changes of drivers was out?

[JKent]

>There must have been 2 versions of the Microstatic tweeter.

>According to the Stereo Review article, it has 2 1 ¾” drivers

>and 2 1 /2” drivers. And it measures 9 1/8 x 5 ¼ x 3 ¾.

That should read Two 1 3/4" drivers and two 1 1/2" drivers

>I have a friend who said his are Model FRM-1 and they have 2 level controls.

Think my friend was mistaken. The FRM-1 was a full-range speaker system, not a tweeter array

[dynaco_dan]

>>There must have been 2 versions of the Microstatic

>tweeter.

>>According to the Stereo Review article, it has 2 1 ¾”

>drivers

>>and 2 1 /2” drivers. And it measures 9 1/8 x 5 ¼ x 3 ¾.

>This

>>is consistent with the “Technical Specifications” provided

>by

>>Vern. Neither Stereo Review nor the TechSpec gives model

>>number, and the second page of the review is missing.

>>

>>I have a friend who said his are Model FRM-1 and they have

>2

>>level controls.

>>

>>Mine have only 1 level control, like Vern’s photos.

>According

>>to Roger Russell’s web page, the tweeter is Model MS-1,

>has 4

>>1 ¼” tweeters and measures 4x9x5. That description is

>>consistent with my tweeters—they appear to have 4 drivers

>of

>>equal size, and the measurements are 4x9x5. They also

>appear

>>to be solid walnut –not veneer.

>>

>>A few squirts of cleaner/lube to the L-Pads and slide

>switches

>>seems to have got them working and they sound good, but

>I’m

>>still going to recap them. Each crossover has two 1uF 50v

>NP

>>caps. I may leave the 25 ohm L-Pads alone.

>>

>

>Hi again;

>

>Here is a few photos from ebay over a period of time.

>

>I sometimes just save photos and watch the action on ebay.

>

>Sometimes I used to bid on such toys.

>

>There is several different rear photos of the babies we are

>talking about.

>

>The other photos is only some of the multi-tweeter units they

>used on larger full range speakers they sold as well.

>

>The cabinets of our babies were made of solid walnut.

>

>The original MicroStatic Tweeter Array drivers were 2 of one

>size and the other 2 slightly larger.

>

>They may have changed 2 driver's sizes mid-stream.

>

>They also dropped using Peerless tweeters for off-shore

>drivers, later as well.

>

>Your caps are visibly smaller than the original photo I

>posted.

>

>Perhaps a lower voltage rating?

>

>A late thought, what if they changed the drivers and then

>started glueing the back's on to keep curious owners out?

>

>How many owners or prospective owners of AR-2AX's and AR-3A's

>started looking into their grille clothes when news of changes

>of drivers was out?

Hi again;

I believe that those measurements were just rounded off rather than actually a tight measurement.

I do believe that I have read somewhere that they had 4 identically sized tweeters, rather than 2 and 2.

I do know that I read real recently that they went from Peerless to off-shore drivers during the production period.

We all know that drivers and other compononets have been replaced without notice to end buyers, ex., AR-3A and AR-2AX's, just to name 2.

It now appears that there would be at least two or possibly three versions of these arrays.

One with the 2 and 2 tweeters.

One with possibly the same size tweeters.

Changeover from screw-on to glue-on back.

It may be necessary to accumulate serial numbers to coordinate driver cross changes.

Now, did Roger Russell actually measure the tweeter drivers size or did he just guess?

[JKent]

I see there is a fellow on the For Sale section selling Matsushita replacements for the Peerless tweets used in Mac speakers. According to Roger Russell, these are the same tweets used in the MicroStatics, so I guess those Matsushita replacements would work in the MicroStatics.

Fortunately I don't need them. Mine sound good with the new caps and cleaned up switches. They are a nice addition to my KLH Twelves. Just sorry I missed out on the pair just sold on ebay (by $1)

Here is one tweeter's innerds with new Dayton caps, and a shot of it atop the 12.

[Altecboy]

I see there is a fellow on the For Sale section selling Matsushita replacements for the Peerless tweets used in Mac speakers. According to Roger Russell, these are the same tweets used in the MicroStatics, so I guess those Matsushita replacements would work in the MicroStatics.

Fortunately I don't need them. Mine sound good with the new caps and cleaned up switches. They are a nice addition to my KLH Twelves. Just sorry I missed out on the pair just sold on ebay (by $1)

Here is one tweeter's innerds with new Dayton caps, and a shot of it atop the 12.

Here are photos of the two types mentioned. I got the 4-the-same from Tom Tyson (thanks Tom). The 2 large 2 small is the older version with the screw-on back.

[JKent]

For fellow MicroStatic fans, here are the installation instructions

Kent

Instructions.pdf

[dynaco_dan]

For fellow MicroStatic fans, here are the installation instructions

Kent

Hi Kent

Thank you very much for posting this valuable piece of archival history.

I see now that the review mentioned previously is on the backside of the review copy I still have, page 45.

This is now Sunday evening.

I found the Microstatic speaker review today.

I will need to setup my scanner again, not soon.

I will probably email it to Carl, so he can post it here.

The same as I did with, "The Audio Amatuer index list".

If that is ok with you, Carl?

This is the reverse side of page 46.

I do not know why my uploading and email to members privileges have been cancelled.

I returned this evening, Monday, to try to upload these files again and bingo.

Thank you for restoring my uploading privleges.

The sheets are real ratty looking but great reading.

Scan 20110321cf.pdf

Scan 20110321cddd.pdf

Scan 20110321ce.pdf

[basspro]

I havce a set of these speakers and an old harmon/kardon 930 stereo receiver - any ideas on what these are worth? Also, where would you recommend I sell them? eBay?

[dynaco_dan]

Returned this evening to try to upload these files again and bingo.

Thank you for restoring my uploading priviledges.

The sheets are real ratty looking but great reading.

Enjoy reading the review in it's entirety now.