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OHM 3XO Factory Rebuild

I am new to Audiogon and enjoy all the various posts and have learned a lot in the short time here, so I figured it was my turn to chime in

I’m a lover of music, don’t consider myself an audiophile, but I do want the best out my system for the amount I’ve invested. ( and will keep investing) 

I was introduced to the OHM line of speakers from the gentleman I purchased my Jolida tube amp from this past winter. Long story short I ended up purchasing a pair  of OHM 3XO’s, vintage early 1990’s and thought they were wonderful.

Over several months I started switching between them and my 1978 vintage Cornwalls and noticed that the midrange on the OHMs seemed shadowed and not fully defined, though the treble and base were just fine

I contacted OHM and they stated they would rebuild each driver to new specs at what I considered an affordable price. So I removed them, packaged them up and sent them to NY.  Within 2 weeks I was notified that they drivers needed new surrounds and that they would also replace the capacitors and recommended a tweeter upgrade to their latest version found in their 3000 and 5000 series today

I agreed and in 2 weeks I received my drivers back, and impeccably packaged. For those that may know the OHM drivers, they sit on top of the speaker cabinet via a metal ring. Well the factory uses these rings as a support within the box so the driver is actually suspended in air. They actually cut a piece of plywood to match the diameter of the driver, which the ring is then attached to, and then that piece of plywood sits on another support with the box ( each driver has it’s own box) so there is no force put upon the outside of the driver housing during shipment, 

Each separate box was then placed inside a master box with corner protectors on all 4 corners, top and bottom, so the individual boxes could not move. I was thoroughly impressed.

The sound ?  Magnificent !

The midrange is spot on, even rivals the Cornwalls or better. The highs…well I’m hearing instruments ( finger cymbals, snare drum brushes and the like) in recordings I never knew were there. The bass is strong but  not as deep as the originals, which is OK…I use a sub to slightly augment ( which I have to also use with my Cornwalls)

Are they perfect ? No. Are my Cornwalls ? No. Are there better ? Of course. But for my listening and personal enjoyment, I am more than satisfied.

I will say, the staff at OHMs was fantastic. They are old school, treat every customer like they were their first, listen to their needs and offer choices across the board. Very refreshing to see in these times we live in. 

johndel1960
curiousjim's avatar
curiousjim
4,631 posts
 

I had the Ohm E’s a hundred years ago and the sound definitely changed (got better) for a few hundred hours before they totally settled in.

dep14
336 posts
 

I am a big fan of OHM’s. In fact I just refurbed a set of Walsh 5 LE’s using the latest 5.5000 drivers.

 

In reading through your post. A couple of thoughts. It sounds like you still have the same woofers as they just replaced the surrounds. With the same drivers you should get the “Same” amount of bass. However, if they changed the port tuning, you could get more or less bass, but with deeper extension now. It would depend on the port tuning. Otherwise, as the surround loosens up a bit your bass should improve a tad.

 

Second thought. If you are using the Jolida tube amp, it wouldn’t be my first thought with OHM’s. More than just about any speaker I’ve owned (and that is a lot of speakers). The OHM’s need power. So, I would give them a little gas for a while with a big old solid state amp (or Class D will be fine).

 

I do feel that the biggest difference between the original drivers in the Walsh 5LE’s and the new 5.5000’s is the midrange is much, much better. I also prefer the soft dome tweeter in the current speakers. I’ve had a few generations of OHM’s over the years. I’m not a fan of metal tweeters in general.  If the midrange is more prominent after their tuning, then you might feel like you hear less bass also.

 

You could also just push them back 6 inches towards the wall. OHM’s really change their bass presentation based on location to the wall. I have some older Walsh 1’s also. It cracks me up how much bass they can generate when 6-8 inches off the rear wall and with a big old Adcom 5800 pushing them around.

 

If you don’t have a solid state.  Run down to guitar center and pick up a crown amp and give it a whirl.  They aren’t perfect, but they have a crap ton of power cheap and a liberal return policy.

johndel1960 OP
5 posts
 

Dep14

Thanks for the input. I have moved them around a bit, but have generally have kept them in the same location before and after the rebuild., 10-12” out from the wall

You are correct that the mids and highs are now more present in the soundstage, that’s why I added a sub for that little extra low HZ push. 

I have a ‘78 vintage PIONEER SA1000 that I put in service all last week for comparison. Keeping the tone knobs at neutral, the  bass was about the same.       I did add a little bass and it did help. The SA has other tone controls that augmented the overall sound, which I found very interesting. But I feel the tube amp gives me the “sound” I’m looking for. Tube amp now back in service.

I know the Jolida is a decent amp for the $$ and that’s where I wanted to start and will eventually move on to something else. So to those with OHM speakers powered by a tube amp, any recommendations ?  

Music tastes vary from Tower Of Power,Chris Botti, Faith Hill, Chris Stapleton and one of my favorites Marcus King

Appreciate all the input…what a great hobby

sryeager
125 posts
 

With my 5000s, I’m using a Rogue Cronus Magnum II.  Plenty of power and chest thumping bass and kick drum.  Talking to the folks at Rogue, they said Ohm used one their amps for a show once.

dep14
336 posts
 

@johndel1960 

I get the tubes thing.  I tend to like some of that sound also.  I've used a tubed pre-amp with a solid state amp sometimes.  But I just downgraded my electronics a bit to use the cash somewhere else.  So, I am running some Nelson Pass designed ADCOM pieces (GFP 750 and GFA 5800) for now.  Vintage, but Pass tends to at least give a little of that tube flavor even to solid state components.  I suspect at some point I could go to a Tube/SS hybrid integrated amp (possibly a modwright 225i as used pricing comes down).  

 

But, I do think if you give those drivers some bigger solid state power you will get more bass out of them, but I get liking what tubes do to the midrange and top end.  

 

All part of the hobby.

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