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Ohm C+

Production Period
mid 1970s
Nationally Advertised Price
$500 per pair
Amplifiers Recommended
at least 33W
Impedance (typical)
Frequency Response
47 - 20,000 Hz (+/-3dB)
Sensitivity @2.8 Volts
87 dB
Recommended Room Sizes
1200 - 2800 cu.ft.
Purchase OptionsPriceOrder

The woofer is generally the largest driver in the system which covers the bass and mid-range frequency.

$295 2
3/4" High Tweeter

The high tweeter is generally the smallest driver in the system which covers the highest frequencies.

$95 2

The grill is the cloth and frame used to cosmetically conceal the drivers without affecting the sound. Ohm now uses black grills in almost all cases. In the past, brown and brown/black mixes were used; but every ”brown” turned out differently. Now they are all black.

Crossover service

The crossover is the electrical circuit that protects the tweeters from the low frequency energy that is reproduced by the main drivers. This can only fail, in rare instances, from overdriving the speakers.

$179 3
Low Tweeter

The low tweeter is generally the midsize driver in the system which covers the upper mid-range and low treble

(1) With the return of the original part for recycling within 60 days.
(2) With the return of the original part for recycling before the shipment of the new part.
(3) Recycled repaired and tested.
(4) Per pair.
(5) Special shipping rate applies.

The Ohm C+ replaced the Ohm C. It used the same 10” acoustic suspension woofer and 1” dome tweeter plus an added low tweeter to increase the power handling of the whole system. The sound quality remained the same and the system could use much larger amplifiers.

The OHM C+ can have tighter and deeper bass with the addition of a SubBass Activator (SBA) and our upgraded 10'' woofer. The SBA eliminates the drive below the speaker's natural response to reduce distortion and clean up the deep bass. This allows for lower distortion, higher output and deeper bass, plus uses a self-resetting protection circuit. The upgraded woofers have a new cone surround that is projected to last up to 30 years, while FerroFluid cooling handles the thermo transients from CD's.

Note: Most Ohm upgrades require no specialized knowledge and are easily completed completed by any person. It takes less time to install your own upgrade than it does to package and return ship your speakers to the factory, therefore, we recommend you save time and money by doing this yourself. We ship the upgrade to your door with clear, easy instructions. If for any reason you prefer to have the factory complete your upgrade installation, we will be happy to do this for free, however, you will be responsible for shipping and handling costs each way.

Ohm allows up to $500 for the return of a complete undamaged pair of Ohm C+'s toward the purchase price of new Ohm speakers.

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