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In Reply to: RE: New Clues in the 3.7 Crossover Mystery posted by sparky62 on February 04, 2015 at 19:12:42
The implications of this auction are far more interesting. Someone already went to line-level on the 3.7, YEAH!
Rats! Just when Mark Man was beginning to consider surgery on his 3.7i. LOL
Follow Ups:
Unlike yourself Dr. Strangelove, where you dream of tweaking...Marcus Welby M. D., (that's me), does not like being a "chest cutter" and reaching for his bone saw as he is pulling it out of the box...
The extent of my surgery is going to be fuse by-pass and possibly attenuator hard wire with new binding posts...even that I am going to bring in a specialist...
When I did the Ed Hsu 1.6 crossover and did soldering myself...I am guessing that I may be the ONLY one to have FLAMES shooting out of both sides of his Maggies...(they are di-poles)...this nightmarish event left me with serious Maggie PTSD...
That being said, my friend who is going to do the surgery, is an anal-attentive engineer, (is there any other kind??!!??), depending on how much we open them up, if we got to the x-over I was going to take pics of heart of the i's so 3.7 owners could see what was different...(Waz)...
thanks
Mark
Perhaps you can get Dr. McCoy, aka Bones, to scan your 3.7i with his tricorder.
BTW does your family call you Sparky because of your attempts to solder on your Maggies?
Edits: 02/06/15
E L E C T R I C I A N...
Thanks for lobbing that in there...too easy...
The 1.6 "tragedy" was witnessed by my friend the engineer, who will do the 3.7 surgery, to this day he laughs out loud every time we talk about it...
It was the bridge cap, (?), at the inductor...I had cranked the volume, showing off, when all of sudden there was weird burning smell...then this very black smoke...followed by FLAMES out of both sides...I ran across the room, dropped to my knees, clapped my hands together, with the 1.6 in-between...it did NOT stop burning right away...in fact at that point the speaker fabric started to burn...it was about a 20-30 second "event", but it felt like time stood still...
As far as the Spark (y), nickname goes...I had allot of energy as a kid...duh...some might even say I was the poster child for ADHD...back in the 70's it was known as hyper...add a little dyslexia...I was pretty much a hot mess...
When I graduated from college and I did graduate, my Mother said..."I did not expect this to happen"...with tears in her eyes...my response was..."thanks Ma, for that vote of confidence"...when I was in high school, she kept pushing the army for me..."I think the army would you some good"...
Thanks again Neo...
Mark
And the fun continues! So Sparky Mark it is? LOL, you are going to kill me for what follows (though Neo is really the one to blame, always is : - ))
I just got home and , surprise, the Chinese-built filters I ordered for the "low pass" circuits on the "other project" had arrived! They look as basic and as useful as I hoped. Furthermore, they should be quite "tweakable". This, even for many a non-experienced "ELECTRICIAN", if one ever gets interested, LOL!
Well, as I thought about this, something else came to mind. As we progress with the experimental project -- and determine what others could do -- you Mark could contribute with an "index of ease" or "Sparky Index"?
Some examples:
-- Sparky Index 0: Easy, just plug in or install batteries
-- Sparky Index 1: Easy, just raise the volume, slowly
-- Sparky Index 5: Caution, pull the Op-amp from socket but DISCHARGE STATIC first!
-- Sparky index 9: Caution, call 911 before pluging in solder gun!
-- Sparky Index 10: Crap, I told ya', FLAME THROWER ALERT!
Anyway, this stuff arrived now but I'll be traveling most of this weekend and all of next one. I'll have very little time to fool around with the "new toys".
Which is safer for my Maggies. In fact...had they had ribbon tweeters, my experimental blunders would have blown them every other week. So, you don't really have the exclusive...just a really nice new brand for the ability, Sparky Index!
Your killing me Dr. Strange-tweak...
I am more of digital guy so on the Sparky index...I am going to stick to 1's and 0's...
5's...what is an op-amp?
My soldering gun was confiscated by President W. Diller of the Maggie nation...
One more flame thrower story...early 90's helping a friend do some roofing...got some tar on my pants, so I soaked them in gas, through them in the laundry tub, ran the hot water...added some Tide and bleach...so lets recap...
Gas + Bleach + Tide = 911
After I added the bleach, the suds disappeared and it all started to bubble...the hot water was still running, so when the very close gas hot heater kicked in it went WHOOOOMMMMPPPHHH...the flames shot across the floor, up the side of laundry tub...(as I was standing in my undies and saw the flame shoot across the floor...I was heading for the door)...when it blew, it singed all the hair off the back of my legs and a pretty good patch on the back of my head...I dialed 911...
By the time the fire truck got there...the plastic laundry tub had melted and black smoke was coming out of the 3rd story window of this townhome...the tub fire had gotten hot enough to melt the solder on the copper pipes, so the whole basement was flooded and seeped into the neighbors basement...
The real rub of this tale...it was my COUSINS townhouse and he was renting to me a very discounted rate...it is an Italian thing...I had no renters insurance and my cousin is a lawyer...well...I bought new carpeting for the neighbors and paid for all painting and carpeting in my cousins townhome...we are still good friends and his kids love that story...
So now I walk around like Buddhist Monk...
"Tell us what you have learned Dorothy"...Uncle Sparky does not play with electricity or fire...I won't even light a fart...(yes that does work)...
It will be interesting when your 10" woofers are up and running...you make tweaking fun...as Maggie owners, the challenges of adding bass that blends is something that I personally have not been able to achieve as of yet...I am currently not interested in the DWM's, I want low bass where the 3.7i's don't go...
Thanks again Jben...
Mark
The belly aches from laughing, LOL.
Also, you seem to have read my (or our collective?) mind about the opportunity to compare, for what may have changed in the xover. If you stay short of getting that far, pehaps a few camera flashes from angles may reveal enough. I'll stay tuned for when that surgery happens.
It doesn't say anything about a line-level crossover. It says ".....replaced with external custom built crossovers."
I assume that means (alternative/audiophile) high-level crossovers and not a multi-amp, line-level setup.
You know something that we don't know?
Dave.
LOL! Nahw, I am just day dreaming. You and I have to replace our MMGs down the line. I think it will be 3.7i for me...no regular xover is going to stay there for long, nor a similar one take its place.
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