The Minimus 7 solution

[von.ah]

I've found the perfect retrofit for the beloved Minimus 7: Tang Band W4-930SF.
Just got them from Madisound yesterday and the fit is perfect. Even the original terminals fit from the old woofer (which runs full range with the original crossover). I disconnected and taped the leads for the tweeters and closed everything back up. Slam dunk easy. I've just dipped my toes in the full range water and the water is fine.

[norman bates]

try close field (sitting arms length away from them).

or even try ambiophonics with them.

Norman

[von.ah]

I have them on either side of my monitor at my work office, with a sub under the desk filling in from ~ 150 Hz down. Working very well so far with no EQ.

[von.ah]

Don't everyone jump up at once.
I'll have you know that there are at least five (5) people who would be very excited to see this.
I'm just happy to have increased the perceived fidelity in my polite office system.

[Ty_Bower]

Neat. I've got a pair of Minimus 7. Maybe I should try that sometime.

My bigger (?) problem is with a bunch of Optimus Pro X33AV. They look similar to the Minimus 7, but have little 3" woofers with a 0.75" tweeter. Most of them have fried tweeters and the voice coils scrape in the woofers. I'd love to find a decent full range replacement that could drop in easily. Cheap would be good, too.

[audiosteve]

von.ah,
I'm not clear on what you are doing. Are you running those new drivers full range or are you still using the original crossover and tweeter ?

[Apex Jr]

In my move last year I found a few pairs of a Sonance tweeter
which is an exact fit to the tweeters in the Minimus 7 system.

Here's a blog with a customer using them;
The Stereo Club: Apex Jr.: Your Source for Affordable Electronics

If anyones interested ... $15.00 pair


Steve @ Apex Jr.

[von.ah]

I'm using the original crossover (which has no filters for the woofer), but with the tweeters disconnected. I sealed off the crossover's tweeter leads with tape. I know it's cheap and dirty, but it was just too easy (and reversible).

Ty_, I just measured the dimensions of the original woofer mounted in the cabinet, and started hunting. After looking through all the full range options (3 and 4-inchers) in Parts Express (including all the discussions in the tech talk forum), I stumbled on this driver at Madisound after I read that PE and Madisound have different offerings from various manufacturers...
I'm willing to bet there is a full range driver that will fit yer little Optimi.

I actually had considered your tweeters, Steve. But I had to see what full range was like.

[renfrow]

Originally Posted by von.ah

Ah, another Technics SL-1100A owner/lover! I bought mine in 1976 at the US Army Post Exchange in Augsburg Germany Never needed anything else.

Tom.

[rongon]

Just found this. Nice! My beloved pair of Tannoy Dorset are beginning to suffer from terminal voice coil rub/suspension sag. Recone won't be cheap or easy, so I have to find a short term replacement. I have two pair of Minimus 7's, and was wondering if there's a fullrange driver that would fit... and here it is, on this forum as usual.

I did some quick n dirty modeling from TS parameters in a box response program. It looks like the Qts in this little metal box will be quite high, maybe 1.3. That would predict a bump in the response from around 150 to 350 Hz. Does your pair sound like that?

Anyway, I bought a pair, will be getting them Tuesday. I'm looking forward to hearing them.

Question --- In this tiny cabinet, is there a way to relieve some of that bump in the response by tuning with a port? I was thinking of removing the tweeter, making a plate to cover that area, and fitting a port to that plate. Using a freebie ported box calculator, tuning the enclosure to 70 Hz (which is the published Fs of the driver), I'll need a tiny 1/4" round port only about 1/4" deep. My goal is not to get the system to play bass, it's more to smooth out the low end in preparation for adding a subwoofer.

Hey von.h... Are you still using those Tang Band's in the Minimus 7 cabs? Have you made any changes? Did you find the response to have a noticeable bump in the low mids?

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