Dynaco 416 Story...

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sweetbeats

sweetbeats

Reel deep thoughts...
In usual form this "Story" has its origin in a separate thread which is HERE.

So, months ago, my Dad emails me and says he picked up an amp kit at a garage sale for $5 and asked if I wanted it...said he thought it was all there except for the faceplate. He tells me its a Dynaco 416. I do a little googling and I reply "sure...I'll take it!".

I'm not a power amp guy at all.

I have a studio monitor setup that works for me (Alesis Monitor 1 Mk2 Actives with an ESI SW8000 powered sub and Behringer CX2310 crossover).

I don't even have room for big speakers that would call for a power amp with any real oomph.

Some time ago my brother gave me his glitchy Carver M-1.0t amp too...haven't done anything with that except loan it out to the son of a friend for about a year, but I hooked it up recently to a set of little custom bookshelf speakers I built a couple decades ago...the foam surrounds are rotten...decent sounding little speakers though...anyway I hooked them up to the Carver just to check it out as I'm cleaning house, and I kid you not I've never heard those speakers sound like THAT.

So I checked in with my Dad to see if he could bring the Dynaco kit down on Father's Day which he did.

I don't know what I'm going to do with this thing, but its going to get built, that's for sure.

I'm so drawn to the way my Ampex MM-1000 is built in terms of over-engineering and the component quality and this follows suit with my MCI JH-416 mixing desk...the parts in the Dynaco kit are on par.

Dynaco is better known for their valve amps, but the 400-series solid-state amps have a following. The 416 was their last solid state amp kit I believe...late 70's/early 80's...all discrete, transistor regulated with 8 transistors on the output side, huge Mallory and Sprague filter caps, etc.

Anyway, pics...

Good things come in ratty boxes:

photo (5).webp


Open it up and I'm met with a heavy gauge chassis panel:

photo (4).webp


Peel that away and we've got the rest of it...pre-assembled PCB's, wire, heatsink, more chassis, loose components, and a chunk of a main transformer:

photo (2).webp

photo (6).webp

photo (1).webp


All the big transistors are there which is good:

photo.webp


And last but not least the HUGE power and regulator transistor heatsink:

photo (3).webp


So who knows when I'll be getting to this. I'll be pitching the smaller electrolytic caps right out of the box and replacing with new since they are about 30 years old as it is and they've never been used which shortens their life. The big screw-terminal filter caps should be okay.

Anyway, there you have it!
 
Cool!

Were the assembly instructions in the box too? Hope so!

Good luck with the project! :)

Cheers! :)
 
Yep! A FULL set of excellent condition documents including a HUGE foldout full-color wiring diagram. It's all there.

We'll see where this goes but can you just see the studio with the MCI JH-416 desk, Ampex MM-1000 multitrack, the 3M M-64 halftrack, and the Dynaco 416 amp for monitoring? I'm glad I put in TWO 20A dedicated circuits for audio in the studio...

Like I said my current monitoring works well for me, but I've had some closet concerns/misgivings about the potential phase distortion in a 2.1 system in my small room.
 
Thats a cool find.
I have a nice old pair of Dynaco A-25 speakers that sound great.
 
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