If there is very little sound and it is scratchy, buzzy, or it rattles in the low frequency range, then a low repair is necessary. We must receive both speakers from you so that we can match them both to the good one.

When the system is very dull sounding but most of the sound is acceptable, it usually indicates that a high repair is necessary. Sometimes this is only noticed when one speaker is compared to another. We must receive both of your drivers so that we can match them both to the good one.

The metal can is the protective cover enclosing the driver. This should not be removed except at the Ohm factory. If third-party repairs are attempted, the final repair cost will be higher to fix whatever additional damage is done. However, a small cosmetic dent in the area opposite the wires will have no effect on the sound. These are sold and installed only at the factory after the drivers have been tested and found to be working properly.

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. Now they are all black. The latest style uses wood and perforated metal like the thousand series. The new ones also have no seams. They are much nicer looking than the originals.

Flat Shipping Rates

This upgrade exchanges the complete driver and input terminals plus a new vent adapter. You get the Walsh 3000 drivers. You’ll get deeper bass, more articulate mids and extended highs with wider dispersion in exchange for the 3 controls.

The original surrounds typically last 10 to 20 years while our new surrounds are projected to last up to 30 years. We change the surround and rematch the drivers. They give you better transition to the mid-range for smoother vocals. The new foam is rated for 20-30 years. At the same time, we change the old dampening material on the inverted driver and re-balance the pair to ensure that they are properly matched and performing correctly.

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.

This upgrade gives you deeper bass, more articulate mids, extended treble with wider dispersion and over twice the dynamic headroom of the 4.3000 upgrade. It comes with: 1. Two New Walsh 4000 drivers. 2. Two new grills to accept the larger driver, 3. Two new input boards with gold-plated 5-way binding posts 4. Two new vent adapters to tune the cabinet lower.

Gary Nachman posted on Ohm Acoustics’s timeline

“Completed my OHM 4/4XO to 5000 upgrade last evening. WOW. It is like listening to my music again for the first time.”

This upgrade gives you deeper bass, more articulate mids, extended range & wider dispersion in the treble, over twice the dynamic headroom and controls to match your room and listening tastes. The kit includes: 1. Two new Walsh 5000 divers on special mounting boards for the Walsh 4 cabinet. 2. Two new grills to fit the larger driver, 3. Two new input boards with gold-plated binding posts, and 4. Two new vent adapters to tune the cabinets lower.