Ohm Acoustics Loudspeakers: The Budget Audiophiler


There is a superb scene in Bosch when after an extended day on the job, Detective Bosch returns house to his glass home on the hill overlooking Los Angeles and places on a jazz file. Harry (performed by Titus Welliver) stares out onto the sprawling metropolis beneath and sits all the way down to lose himself within the music popping out of his Ohm Acoustics Walsh loudspeakers. I’ll not have such a putting view of the City of Angels each evening, however Harry and I share the identical loudspeakers. Ohm loudspeakers which have been manufactured in Brooklyn for nearly 50 years. 

“Tell me what I spend a lot time coping with you? – Harry Bosch

No loudspeaker is ideal, and the Ohm loudspeakers will not be with out their faults, however it’s their intrinsic skill to emotionally transfer me with music that makes them not possible to switch.

The Ohm Walsh are just one chapter in my journey with the model, however the one which I’m lucky sufficient to return to each single day.

How did I get right here?

My love for Ohm loudspeakers started with a easy cellphone name. I had bought a used pair of Ohm Fs figuring out that they might require some degree of restore. The Brooklyn-based loudspeaker producer nonetheless helps its legacy loudspeakers; even these manufactured and offered 40 years in the past. How many high-end manufacturers do this?

The man on the opposite finish of the road was Ohm President, John Strohbeen. I don’t count on to talk with Jeff Bezos or Steve Cook, if I’ve an issue with an Amazon buy or Apple product, however having your questions answered by the particular person in-charge conjures up confidence.

Harry Weisfeld, former CEO of VPI Industries, was renown for spending hours on the cellphone with clients serving to them with their questions, so it’s good to know that this apply continues to be alive on the earth of client electronics.

I informed him about my current buy and his daring reply was, “congratulations for purchasing one of the finest speakers ever made.” He detailed the totally different choices for upgrading the loudspeaker, however sadly Ohm now not providers the 18” titanium and aluminium Walsh driver. I must look elsewhere if I needed to maintain the unique driver.

Ohm Acoustics was based in 1971 by Marty Gersten, former Chief Engineer at Rectilinear, and 4 different companions utilizing the unique patents held by Lincoln Walsh; the inventor of the “Coherent Wave Transmission Line Driver.” The Walsh Driver as it’s extra generally recognized. Rectilinear declined to license the Walsh patent and Gersten made a take care of Strohbeen who needed to promote the brand new Ohm Acoustics loudspeakers in his shops.

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John Strohbeen grew to become president of Ohm Acoustics in 1978; Strohbeen’s profession in hi-fi started in his dorm room at MIT the place he began Tech HiFi in 1964; one of many first high-end stereo shops the place you might buy Japanese audio gear.

The Ohm A/F was their first creation and continues to be thought to be the most effective loudspeakers ever made. Perhaps not as well-known in some circles because the Quad ESLs, however a really distinctive and modern design that has loads of admirers.

Ohm Acoustics Loudspeakers

In 1981, Ohm Acoustics left the retail market pivoting to direct gross sales solely counting on buyer phrase of mouth and providing a 120-day house trial interval. To this present day, they nonetheless manufacture new loudspeakers and repair their legacy loudspeaker strains out of their Brooklyn warehouse.

Fast ahead to 2021 and I now personal 5 pairs of Ohm Acoustics loudspeakers, an Ohm shirt, and an Ohm belt buckle. How many audiophiles personal a Krell, Wilson, or Vandersteen belt buckle?

Needless to say I’m a large fan of Ohm, and the best way John Strohbeen runs his firm. I had hesitations that my $200 Facebook Marketplace discover wouldn’t be price Ohm’s time to even focus on — I couldn’t have been extra fallacious.

Most high-end audio producers began as small corporations and it wasn’t sufficient to only provide distinctive merchandise; they needed to ship superior customer support to earn your loyalty. Companies like Ohm Acoustics have by no means forgotten this.

Ohm Walsh F Loudspeakers

Ohm Acoustics F Loudspeakers
Ohm Acoustics F

My Ohm F’s had been bought sight unseen with solely a considerably fuzzy image of the emblem. I violated all of my guidelines within the case of this explicit product. Shame on me.

Much to my chagrin, their look out of the field didn’t convey the fact of their operational points. They seemed to be in nice form minus the surrounds that exhibited proof of dry rot. The vendor had all the unique paperwork from 1973 and the unique packaging as effectively. I introduced them house and linked them to my system anticipating musical ecstasy.


And not the nice sort of silence when everybody leaves you alone at house for the day and you may hear your furnace making these odd knocking noises although the floorboards, as you crack open a chilly one.


After some audio sleuthing on audiokarma.org, I discovered a specialised loudspeaker restore store exterior of Philadelphia, referred to as Millersound. I ship Bill at Millersound an e-mail and he promptly replied with a request for pictures of the Walsh drivers.

Before I might ship the Ohm Walsh drivers to them, he needed to make sure that they had been in a situation that justified a restore. The drivers couldn’t be creased in any method, and the surrounds needed to be the unique components or there was no approach to restore them correctly.

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After shut inspection, it was decided that they could possibly be repaired and I packed them fastidiously in my trunk for the lengthy trek to Philadelphia. Do not even take into consideration delivery these; each from the attitude of price and the potential of harm.

The Long Wait

Two months handed and I acquired phrase that the drivers had been lastly completed. The Walsh driver is kind of complicated and never one thing you possibly can repair with some new foam surrounds and name it a day.

Ohm Acoustics Speaker Drivers in Trunk

12 hours later (and a number of miles), we had been again house and I reinstalled them within the loudspeaker.

These audio system are elegant. They are actually extra elegant than bombastic. Their omnidirectional dispersion sample fills the room with sound; in a method that forces your mind to readjust to the positioning of spatial cues.

Setting them up in your room requires some persistence and a ruler. I’ve moved them 1/8th of an inch in each route and seen a change within the soundstage depth and width; their dispersion sample interacts with all 4 partitions and the smallest adjustments can have a big impact on the sound.

Within a month I had them dialed in and positioned the place I preferred them probably the most; 18” from the entrance wall to the rear of the cupboard. When we’re not utilizing them, I transfer them again flush in opposition to the wall.

Millersound’s restoration is considerably of a commerce secret, however I do know that solely the cone and body are reused. The remainder of the motive force is up to date. The titanium part of the cone is shaved ever so barely to make sure that the cone is about completely at 90 levels and a customized made jig is used within the course of to make sure the accuracy of the set-up.

After the rebuild, these audio system have confirmed to be tremendous versatile with amplifiers. I’ve pushed them with as little as 13 watts from the Muzak tube amplifiers and as large because the 300 watts/channel SEA 2500’s. If you do determine to buy a pair of those, perceive that there might be some further prices to revive them and that you’ll require an expert to do the work.

Ohm 3XO Loudspeakers

Ohm Acoustics 3x0 Loudspeaker
Ohm Acoustics 3×0

The Ohm 3XO’s fall into the “Walsh” household of Ohm loudspeakers. The have a omnidirectional low finish with a directional tweeter. When arrange accurately the “Ohm” emblem might be on the left audio system and the “Walsh” or “3XO” emblem might be on the suitable audio system. This creates a room sweeping “sweet spot” not like conventional audio system. I had the pair I personal up to date with new surrounds for the low finish and upgraded tweeter from the Ohm manufacturing facility. Essentially these are actually higher than new. 

Ohm recommends 50-200 watts and my expertise is that 60 watts is the minimal quantity of energy required to essentially make these audio system come to life. Like the F’s, the position will alter the sound tremendously and these precise got here with wheels to make that simpler. The 3XO are extra domestically pleasant with a a lot smaller footprint measuring 36″ x 13″ x 13″; the bigger Walsh F’s are 44″ x 14″ x 14″.

Ohm FRS-15 Loudspeakers

Ohm Acoustics FRS-15 Loudspeaker
Ohm Acoustics FRS-15

The FRS-15 had been a part of the Ohm lineup within the Eighties. The FRS-15 is a 54” tall sq. tower with every nook reduce about 2”. One of the reduce corners close to the highest, just under the grill, shows the Ohm emblem. The FRS-15 is a real Walsh speaker designed for medium to massive sized rooms.

Like the 3XO’s, they’ve omnidirectional bass response mixed with directional tweeters. These audio system can deal with as much as 250 watts/channel and are rated at 32 – 20,000 Hz (+/-3dB). The 90 dB (6 ohms) sensitivity ranking is fairly correct; I drive them with a pair of 120 watts/channel Luxman energy amplifiers and these loudspeakers can play fairly loudly. These don’t come up fairly often on the used market, however they’re a deal if you will discover a pair in wonderful situation. Ohm advocate changing the froth surrounds each 30 years.

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Ohm FRS-7 Loudspeakers

Ohm Acoustics FRS-7 Loudspeakers
Ohm Acoustics FRS-7

Don’t be confused by the mannequin designation, as a result of the FRS-7’s are the little sibling to the FRS-15’s in title solely. These function a standard entrance dealing with 6.5″ woofer, 10″ passive radiator on the rear panel, and a 5/8” super-tweeter within the high nook. It makes for a really distinctive look. Setup is less complicated as they don’t seem to be omnidirectional just like the loudspeakers above.

The sound is dynamic and detailed; Ohm’s advice of 25 watts/channel is way too low. I used them for a yr with a forty five watts/channel receiver and the sound high quality was fairly common. When I linked them to my Pilot receiver than can output 80 watts/channel, a special loudspeaker appeared.

Ohm E Loudspeakers

Ohm Acoustics E Loudspeaker
Ohm Acoustics E

The tremendous inexpensive Ohm E’s had been launched within the late-Nineteen Seventies and they’re one in all my favorite Ohm loudspeakers. They offered for $200 on the time and have grow to be fairly in style on the used market if they’re in good situation. Ohm nonetheless provide a variety of improve choices on their web site and I discover myself utilizing my pair increasingly more. There is a naturalness to the sound with jazz, classical music, and folks/nation/blues that makes them an ideal pair of loudspeakers for an workplace, eating room, or bed room.

If you concentrate on it, the flexibility to have 40 year-old legacy merchandise supported by Ohm Acoustics makes their merchandise relatively distinctive. The Walsh fashions had been fairly costly once they had been initially launched and restoring a pair could be costly if the drivers will not be in nice form.

I want to ship a particular thanks to Jerry, the unique proprietor of my Ohm F’s; for his impeccable style in audio gear and to his daughter, Paula, who allowed my household to be the custodian of his Ohm F’s for the subsequent era.

For extra info: ohmspeaker.com


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