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Traynor YC-810 brought back to life

For my rig, I use a Mesa D-800+ with Darkglass dirt, and an old SWR 2x12. The cabinet is ok, fine for shows since my band usually plays small clubs and bars. I started looking for a dedicated cabinet to leave at practice (drummer's basement)...

Lo and behold, my drummer's dad had an old Traynor 8x10 that had been collecting dust, with a few speakers robbed for another of his projects. And he gave it to me free.
Traynor - as received 2.jpg


Traynor - as received.jpg


From my thorough research (talkbass search) I determined this is a YC-810, 1967 design, 4 Ohm 200W total with 25W speakers, 32 ohms each. Speakers are marked "1972". However the wiring is series-parallel instead of full parallel so I assume it was 8 ohms instead of 4. If I did my math right.
Original speaker.jpg

I replaced the missing speakers with Eminence B810's, 32 Ohms, and replaced all the wiring with 14 gauge wire. Putting everything back together, I did rewire it for full parallel so this should now definitely be 4 ohms. Any words of caution on this? My D-800+ can go down to 2 ohms, but I'm not really concerned about needing "room to grow" if I add a second cabinet... since this is a 8x10 after all.

(If I did add a second cabinet... I would power a 2x15 with a cheap used Peavey Mark IV driven by signal from the D-800+.... like any sane person would do...)

speakers removed.jpg


Next time we have a hurricane I'll hide the family behind this cabinet. 3/4" 5-layer ply for the walls and baffles.

speakers removed detail.jpg

In process.jpg


My wife would periodically walk into the garage, wrinkle her nose, and comment on how it smelled old. More helpfully, my seven-year old daughter (gear-head princess, future music geek, and electrician in training) wanted to contribute. So she was in charge of stripping wire. And she did great.
Madi the electrician rocker in training.jpg


First practice with this behemoth should be thursday... testing at my house, it's louder than practice volume with my amp volume at 11 o'clock, when normally I have it around 1 o'clock with my 2x12.

I don't mind the colossal weight as this is intended to be stationary at the practice basement. Potential next project: replace the futuristic silver grill cloth with expanded metal? Make it even less likely to move? Replace the remaining four original speakers??
 

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  • Traynor - as received 2.jpg
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  • speakers removed.jpg
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  • reassembling.jpg
    reassembling.jpg
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For my rig, I use a Mesa D-800+ with Darkglass dirt, and an old SWR 2x12. The cabinet is ok, fine for shows since my band usually plays small clubs and bars. I started looking for a dedicated cabinet to leave at practice (drummer's basement)...

Lo and behold, my drummer's dad had an old Traynor 8x10 that had been collecting dust, with a few speakers robbed for another of his projects. And he gave it to me free.
View attachment 3739519

View attachment 3739520

From my thorough research (talkbass search) I determined this is a YC-810, 1967 design, 4 Ohm 200W total with 25W speakers, 32 ohms each. Speakers are marked "1972". However the wiring is series-parallel instead of full parallel so I assume it was 8 ohms instead of 4. If I did my math right.
View attachment 3739523
I replaced the missing speakers with Eminence B810's, 32 Ohms, and replaced all the wiring with 14 gauge wire. Putting everything back together, I did rewire it for full parallel so this should now definitely be 4 ohms. Any words of caution on this? My D-800+ can go down to 2 ohms, but I'm not really concerned about needing "room to grow" if I add a second cabinet... since this is a 8x10 after all.

(If I did add a second cabinet... I would power a 2x15 with a cheap used Peavey Mark IV driven by signal from the D-800+.... like any sane person would do...)

View attachment 3739527

Next time we have a hurricane I'll hide the family behind this cabinet. 3/4" 5-layer ply for the walls and baffles.

View attachment 3739528
View attachment 3739534

My wife would periodically walk into the garage, wrinkle her nose, and comment on how it smelled old. More helpfully, my seven-year old daughter (gear-head princess, future music geek, and electrician in training) wanted to contribute. So she was in charge of stripping wire. And she did great.
View attachment 3739543

First practice with this behemoth should be thursday... testing at my house, it's louder than practice volume with my amp volume at 11 o'clock, when normally I have it around 1 o'clock with my 2x12.

I don't mind the colossal weight as this is intended to be stationary at the practice basement. Potential next project: replace the futuristic silver grill cloth with expanded metal? Make it even less likely to move? Replace the remaining four original speakers??

My only concern is all of the drivers share the same acoustic chamber, so ideally they should be matched. I suspect the B810s are a lot stronger than the original drivers, so at some point I believe you will get a condition where the old speakers and new speaker are traveling in the opposite direction. I.E. the new speakers are dominating the old speakers. Mismatched drivers is less a problem with Ampeg 810s because they have four separate acoustic chambers, so you just have to make sure and put matched drivers in each chamber.

Also you need to respect the original power handling limits of the design. The power handling may actually even be diminished based on what I mentioned in the previous paragraph.

My first cab was a Big-B. It's too bad half the original drivers have been cannibalized as I actually preferred the Big-B to my Ampeg 810. The Big-B did not have as much low end, but it had more clarity in the mids and more HF extension.

If you can afford it, you might consider buying four more B810s and offering the the original drivers to other Big-B owners who need replacements (for a price of course). If you push the cab hard, you are probably going to wind up buying four more B810s anyway...hopefully you see my logic.
 
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Sound id assume be more consistent with 4 more of the legends B810

been years since ive heard these old traynors.
be interesting to hear a legend loaded traynor compared to my 810E
likewise compare to a all factory driver traynor unit.

looks like alot of fun either way
i had many pairs of traynor 2x15s with the same bumper style cabs.
back in the 90s you could find older traynor cabs for 50 to 100 bucks
its darn fun toasting piles of marsland speakers. they actually sound pretty darn good

for god sakes no metal grill.
literally use to spray simple green on the grills removed
blast it with a garden hose. and it would make them look pretty good
 
These old Traynors are workhorses, glad to see you've got it working. I'm personally on camp "don't fix what isn't broken," or just leave the grill cloth as-is. Either way, I'd like to see what it looks like when you're done. I'm also with the others on just replacing the four Marslands with Eminences.
 
Back in the day I played through one of those. An entirely different animal than the Ampeg 810. Not nearly as refined as the Ampeg, but plenty loud. IIRC it was made to pair with the Super Custom Special (200watt tuber) I had back then. Of course all of that couldn't fit into my Ford Falcon so when the guy with the van left the band, I had to trade the YC810 for a couple of smaller cabs. You've got a real behemoth there. Replacing the drivers might cause some issues, it sounds like the price was right so good luck!
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