SRS Project

westmassguy

This was an original 2nd/3rd generation SRS. I have to say, these beasts are a PITA to work on. Sonicaps were used throughout the Hi & Lo-Pass, with the exception of the large Caps in the Sub Bass Drive circuit, where Dayton 5% Caps were used. All Caps were hand matched, Sonicaps by Sonic Craft, and the Daytons by me. Mills MRA-12 Resistors were used. The Existing Clear Jacketed Tweeter wiring was replaced with color-coded #16 gauge Tinned Copper. The Clear Jacketed Leads were really nasty, sticky and heavily oxidized. Same for the Hi-Pass coming off the Binding Posts. New Erse SuperQ Sub Bass Drive Inductors rounded out the upgraded components.
Due to the size of the New Caps, Supplemental Riser Boards were fabricated, and additional standoffs installed on the circuit boards, and at the ends connecting them to the large spool Inductors for added support. All in all, a fun project, and another Big Beauty brought up to modern standards.

voltz

Now that really came out nice! Plus it sounds like he needed this upgrade badly! WTG Dave! Another SRS given a new leash on life and another owner is going to be smiling.

westmassguy

Thanks Brother

msg

jeeze, look at that stack!
nice stuff, man, very nice.

how old would you say the OE stuff was?
prob what my guts look like.

westmassguy

msg wrote: »

jeeze, look at that stack!
nice stuff, man, very nice.

how old would you say the OE stuff was?
prob what my guts look like.

Thanks. Circa 85' or 86'. 4th and 5th generation were re-designed with a common, smaller circuit board for all SDA/SRS models

Nightfall

voltz wrote: »

Another SRS given a new leash on life and another owner is going to be smiling.

Why would someone put a new leash on the life of a pair of SRS's when they could give them a new lease on life?

Moose68Bash

Nightfall wrote: »

voltz wrote: »

Another SRS given a new leash on life and another owner is going to be smiling.

Why would someone put a new leash on the life of a pair of SRS's when they could give them a new lease on life?

I don't know: Perhaps he wants them to rein in life, rather than have life control them with some contract only lawyers can understand.

Just a thought!

westmassguy

nbrowser wrote: »

Geez seeing these upgrade crossover threads is pushing me towards "attempting" some crossover work...not to my SDAs to begin with though, my Monitor 5s...they are begging for a refresh.

Great crossover to get your feet wet.

westmassguy

Nightfall wrote: »

voltz wrote: »

Another SRS given a new leash on life and another owner is going to be smiling.

Why would someone put a new leash on the life of a pair of SRS's when they could give them a new lease on life?

Moose68Bash wrote: »

Nightfall wrote: »

voltz wrote: »

Another SRS given a new leash on life and another owner is going to be smiling.

Why would someone put a new leash on the life of a pair of SRS's when they could give them a new lease on life?

I don't know: Perhaps he wants them to rein in life, rather than have life control them with some contract only lawyers can understand.

Just a thought!

Give him a break. Darryl's brain is so far above ordinary men, that his poor fingers can't keep up

voltz

LOL I was definitely finger tied at the moment, I can't believe I put SRS instead of SDA

tophatjohnny

Amazing work by an Amazing person! Whoever is lucky enough to work with David will quickly realize he does everything to the extreme quality that the job he's doing is getting 100%, 100% of the time. We are blessed to have him here and very proud to call him my friend!!!

westmassguy

tophatjohnny wrote: »

Amazing work by an Amazing person! Whoever is lucky enough to work with David will quickly realize he does everything to the extreme quality that the job he's doing is getting 100%, 100% of the time. We are blessed to have him here and very proud to call him my friend!!!

Thank you Mr. Ripper, now where do I send the check?

westmassguy

nbrowser wrote: »

westmassguy wrote: »

nbrowser wrote: »

Geez seeing these upgrade crossover threads is pushing me towards "attempting" some crossover work...not to my SDAs to begin with though, my Monitor 5s...they are begging for a refresh.

Great crossover to get your feet wet.

Yeah, should be simple enough that if I do screw things up, fixing them won't be too difficult. Just have to unscrew the terminal cup one of these days and investigate whats in there and scrounge for parts, also pick up a decent iron to do the work.

Just do them one at a time, so you can refer back to the original layout and solder points. If this is something you're going to do once in a great while, there's a 50 watt adjustable iron that will do the job. Your typical 20-25 watt pencil iron won't heat up the copper traces enough to make a good, smooth solder joint.
Rat Shack, if they're still around by you, used to carry it.

MrBuhl

Man that's a heck of a stack of caps! Nice work!

westmassguy

nbrowser wrote: »

westmassguy wrote: »

Just do them one at a time, so you can refer back to the original layout and solder points. If this is something you're going to do once in a great while, there's a 50 watt adjustable iron that will do the job. Your typical 20-25 watt pencil iron won't heat up the copper traces enough to make a good, smooth solder joint.
Rat Shack, if they're still around by you, used to carry it.

Rat Shack went the way of the Dodo bird over a decade ago. Kinda miss the 'ol Radio Shack...used to have those hard to find interesting things.

Ours just closed last year

westmassguy

MrBuhl wrote: »

Man that's a heck of a stack of caps! Nice work!

Thanks Ed

westmassguy

We don't have a complete library of the older Monitors unfortunately.

voltz

I did my Monitor 4's myself with Dave's advise to help me. Took one look at my 10's and said no way! I wanted them done right Said they same thing about my CRS's too.

westmassguy

voltz wrote: »

I did my Monitor 4's myself with Dave's advise to help me. Took one look at my 10's and said no way! I wanted them done right Said they same thing about my CRS's too.

Was my pleasure Brother.

stogie

nbrowser- is this what your m5 crossovers look like? Mine are dated 1980


Here are the upgrades- thanks to David for advice

stogie

The SRS crossovers at the beginning of this thread are mine. David is a great guy and was really patient with me and did a super job on the rebuild. Speakers are in the break-in stage right now with about 50 hours on them. They sounded fantastic from the beginning. Looking forward to hearing the difference after a few hundred hours. Thanks again David!

dkfreebird

Congrats on the rebuild,Dave did my 2.3tl's and I couldn't be happier.

westmassguy

stogie wrote: »

The SRS crossovers at the beginning of this thread are mine. David is a great guy and was really patient with me and did a super job on the rebuild. Speakers are in the break-in stage right now with about 50 hours on them. They sounded fantastic from the beginning. Looking forward to hearing the difference after a few hundred hours. Thanks again David!

Was my pleasure Sir. Enjoy those Big Beauties!