Walsh Style Speakers - General Questions and Answers:
Speaker Repair Questions and Answers:
Question: How many drivers do these speakers have?
Answer: The true Walsh Driver is one single transducer covering the entire
Question: Are there any crossovers used in this speaker design?
Answer: There are no crossovers or contour networks of any kind and
distortions introduced to the signal.
Question: Are the Walsh drivers “Time Aligned”?
Answer: The steep angle used in the design of the transducers cone is such
produces a time aligned wave-front with a 360 degree
radiation pattern. This very much resembles the wave pattern
produced when a stone is dropped into a pond. These waves are
perfectly coherent and aligned with all other waves leaving the
Question: Do these speakers have a “Sweet Spot”?
Answer: Unlike other conventional drivers, be it pistonic or dipole the
Walsh Radiator does not
suffer from beaming or high frequency
drop off when listened to off-axis because the sound is being
delivered equally in all directions. It is this nature that allows
one to move from side to side with very little change in sound
quality and therefore more closely resembles a natural point
source radiator which all instruments tend to be.
Question: How much power do I need to drive these speakers?
Answer: The original Ohm Acoustics “A” and “F”speakers were some-
what inefficient due to
their voice coil and magnet motor
design. The spider assembly tended to be too soft and allowed
the voice coil to droop or hang out of the magnetic gap resulting
in poor efficiency and the need for tremendous amplifier power.
This often resulted in driver damage or voice coil burn out. Our
New design addresses these issues and more resulting in a true
Under-hung voice coil design and a net gain in efficiency. While
our new design requires less power and it is possible to drive the
speakers to very comfortable levels with as little as 10 watts, we
find that it is extremely beneficial to use a minimum of 100
watts per channel up to 400 watts per side. This extra dynamic
headroom allows the speakers to open up and breathe resulting
in a much more defined stage presence and overall clarity.
Question: These speakers sound too good to be true. Do they have any
Answer: As with all good things, there is one caveat with the present
Walsh design and all
other speakers for that matter. They can
be overdriven, which can result in severe distortion and or cone
damage. The present design allows for an Xmax (cone move-
ment) of around 1/2 inch.
Question: I really love bass and sound effects. Can these speakers deliver?
Answer: While the refurbished and upgraded Ohm “A” and “F” as well as
The new Walsh
TLS-1 and 2 series deliver superb bass, these
speakers were designed to deliver the ultimate in musical
experience. There is a big difference in Home Theater and
typical musical enjoyment. The Walsh driver will leave you
breathless with lifelike music reproduction and can even knock
you out of your seat with gut wrenching bass, but I do not
recommend them for home theater sound effects. For this I
suggest I-Beams and extreme sub woofers.
Question: I am very interested in owning a pair of your speakers, but I have
all, it is a lot of money to invest. Can you
justify my expenditure? Why refurbish my old speakers vs new?
Answer: I would like to point out that although the Walsh Speakers are
not inexpensive, they
are ranked as mid-priced amongst the high
end products presently available. Further, the original speakers
had a closing price of $4,500.00 in 1984 when production ceased.
Adjusting for inflation, the TLS-1 should have a price tag of no
less than $10,000.00 in today’s market. At HHR Exotic Speakers, our
speakers contain no less that 36 improvements over the original
products with more in the works.
Question: I have heard that the Walsh Speakers are very good products.
How do they
compare to other high end offerings?
Answer: The original Walsh Speakers were considered by many to be
amongst the finest
speakers ever produced. In fact they have
been known to compete with speakers in the $50,000.00 range.
Our current production speakers and rebuilds are far better than
the originals and still rank among the finest speakers in the
world. They are works of art both in musical reproduction and
are visually stunning.
Speaker Repair Questions and Answers:
Question: I have an old pair of Ohm F’s sitting in storage and the foam surrounds have
decayed. Why can’t I simply replace these and make the speakers work again?
Answer: The foam surround is an integral piece of the speaker suspension and has the
thickness and resilience along with the spider to give the speaker the
correct compliance. In addition, the surround is largely responsible for absorbing
and terminating the sound wave as it traverses the cone length one time only.
The wave must be completely terminated or the reflected wave will return up
the length of the cone and interfere with the oncoming wave fronts producing
distortion and coloration. These surrounds are made to my specifications and are
not available off the shelf.
Question: My Voice Coil shows an open reading on my DVM. Can these be replaced?
should I do? Only one speaker has an open VC, can I replace only one?
Answer: The first thing to do is to check the fuse at the input lead connections. Often the
will blow and still look like it is intact. Or, it in fact can be blown open. If
the VC is in fact open or shorted, it can be very carefully removed and replaced
with a new VC. If these are Old model F’s then Both speakers must be upgraded
to the new VC, as they are different in design and weight. Replacing only one
would completely mismatch the speakers and created differences in the response,
efficiency, and overall performance.
Question: I have an older pair of F speakers and the spider has sagged due to cone weight
pulling the VC out of the magnetic gap. It still plays, but not very loudly. What
can I do?
Answer: One of the problems originally associated with this driver was the fact that the
relatively heavy and thereby due to gravity and age tends to pull the spider
downward causing sag. This also affects the surround as well. While there is no
easy way to prevent this problem, I have reduced the tendency for this to occur by
utilizing a heavier spider with greater stiffness. The spider looks the same, but is
in fact stiffer by design and is made to my specifications. It is not an off the shelf
Question: If I have H & H service my older speakers, can I replace just the spiders and the
Answer: Unfortunately, no. The spider is an integral part of the voice coil assembly and
therefore be replaced as one item.
Question: I am considering having my Old F’s repaired by HHR Exotic Speakers. Why is it so
to have just basic repairs done? I had a friend that sent his to another
recone expert and it was much cheaper. How do I know that you are not just
ripping me off?
Answer: First of all I would like to explain that these speakers are extremely deceptive
appearance and operation. The average reconer will simply not fully
understand the operation of this driver nor the consequence of replacing worn
parts with just any old part. While they may do a very nice job and indeed the
speakers may play, they will not be optimum and perhaps even sound bad. This
results in giving the “F” or the “A” a bad name, and perhaps worse an unhappy
Question: I have an older set of F’s and I keep noticing a black powder or gooey black
particles fallen from under the driver when I remove the driver from the base.
What is this substance?
Answer: Unfortunately another of the problems associated with these drivers was the
of the internal damping foam to rot from years of exposure to air
and elements. I can assure you that if your spider is sagging, if the surround is
decayed or rotted, then the internal damping foam and internal damping putties
have decayed as well and all will need to be replaced.
Question: I bought a pair of these in 1976 or I purchased a pair on E-bay for only $500
Why should I pay you far more than this per driver to just have these
repaired. I don’t see the logic in that.
Answer: Consider for a moment that you own one of the finest audio speakers ever made
this fact has been printed and confirmed by many, many sources since the
release of these speakers in 1972. Consider also, that $500 in the 70’s is an
equivalent of over $3000 today and that, in fact the closing price for these
speakers in 1984 was over $4,000 dollars. In addition, the current price for the
TLS-1 is at an introductory price of $5,000. It therefore seems reasonable to assume
That a small investment today can result in speakers worth far more than you paid
for them, and you will have one of the finest loudspeakers ever built.
Question: I have heard many fine loudspeakers, some of them just blowing me away and
only use piston drivers, not to mention they cost far less. What makes these
Answer: All Box speakers that use piston drivers, including some full range electrostatic
panels and even full range ribbon drivers use crossovers. Crossovers produce
time and phase distortions and introduce all manner of electrical signal distortions
All Box speakers are limited to a maximum of 180 degrees dispersion and more
likely a much smaller amount. They tend to sound hollow, lifeless and have
critical room placements or a sweet spot. The stereo image tends to wander and
the open airiness or spatial depth is lost. The Ohm F and A, and now the TLS-1 and TLS-2
do not suffer from this problem. They have no crossovers whatsoever. They are
a single driver covering the entire audio range from 20 Hz to 20 KHz. The Walsh
driver emits sound in a full 360 degree pattern and more importantly, the sound is
perfectly coherent, analogous to a laser beam. The sound waves are radiated from
the slant surface of the cone in a perfect cylindrical wave front. This driver acts
more like the ideal “pulsating cylinder” than any other speaker ever devised. It is
in fact the only driver in existence that can pass a square wave with almost 98% of
the original wave retention, possessing extremely fast transient times and very fast