Hello everyone,
I have a dilemma on my hands and not sure which path to take. I will try to be as accurate as possible with what I know about my system. I have an old Genesis 2 system. It consists of 4 columns. 2 Mid/High panel wings, and 2 bass columns with 4 drivers per column. There is a bass amplifier that drives the bass columns. Each column has 1 servo driver, and the other 3 follow the signal correction based on the feedback from the servo driver. The amplifier has low pass, high pass, phase (0 - 180), volume, and the on/off. The amplifier consists of 4 - 300watt amplifiers to drive all 8 - 12" woofers. 2 woofers per amplifier module. 1200 watts total per the specs. Each driver is in a segmented enclosure internally. The bass columns are sealed units.
Many power outages and spikes have taken its toll on the bass system. It still functions, but has issues. 1. The servo feedback driver is scraping on the pole. 2. There are no replacement parts or schematics from Genesis. I have already asked. 3. What is the best approach to maintaining or replacing the bass system.
Most importantly of anything mentioned, I am a novice with electronics. So your input will be appreciated.
Considerations if modifying the existing system: Use the bass columns to keep the original look. If possible use the original bass amplifier. What drivers to use as the replacements that drop into the holes? Will the end result exceed the original design. Where do I start with the project? Do I measure the segmented column volume and calculate from this as a start? Can the drivers be slaved from a single servo as was the original? If they can be slaved, then do the other drivers would have to be matched?
Considerations if using what I have: Can the drivers be repaired with new coils? Will they match the original output when measured? Where can I find or have new feedback coils. It looks like this is part of the VC assembly. Will the results match the original design parameters?
Can anyone identify the drivers used in the bass columns so I can find a replacement VC. If the servo is not available, what can I do to provide the feedback correction with the existing amplifier? Does anyone know who would be able to make a replacement part for this? Once I start the replacement part process I don't want to hit a dead end and sit with an unfinished project. I have attached pictures of the speaker set-up. Please let me know how you guys would approach this project. As you can see, this was a state of the art system back in 1990 from Genesis. Any and all thought are welcome.
Thanks,
Mark
I have a dilemma on my hands and not sure which path to take. I will try to be as accurate as possible with what I know about my system. I have an old Genesis 2 system. It consists of 4 columns. 2 Mid/High panel wings, and 2 bass columns with 4 drivers per column. There is a bass amplifier that drives the bass columns. Each column has 1 servo driver, and the other 3 follow the signal correction based on the feedback from the servo driver. The amplifier has low pass, high pass, phase (0 - 180), volume, and the on/off. The amplifier consists of 4 - 300watt amplifiers to drive all 8 - 12" woofers. 2 woofers per amplifier module. 1200 watts total per the specs. Each driver is in a segmented enclosure internally. The bass columns are sealed units.
Many power outages and spikes have taken its toll on the bass system. It still functions, but has issues. 1. The servo feedback driver is scraping on the pole. 2. There are no replacement parts or schematics from Genesis. I have already asked. 3. What is the best approach to maintaining or replacing the bass system.
Most importantly of anything mentioned, I am a novice with electronics. So your input will be appreciated.
Considerations if modifying the existing system: Use the bass columns to keep the original look. If possible use the original bass amplifier. What drivers to use as the replacements that drop into the holes? Will the end result exceed the original design. Where do I start with the project? Do I measure the segmented column volume and calculate from this as a start? Can the drivers be slaved from a single servo as was the original? If they can be slaved, then do the other drivers would have to be matched?
Considerations if using what I have: Can the drivers be repaired with new coils? Will they match the original output when measured? Where can I find or have new feedback coils. It looks like this is part of the VC assembly. Will the results match the original design parameters?
Can anyone identify the drivers used in the bass columns so I can find a replacement VC. If the servo is not available, what can I do to provide the feedback correction with the existing amplifier? Does anyone know who would be able to make a replacement part for this? Once I start the replacement part process I don't want to hit a dead end and sit with an unfinished project. I have attached pictures of the speaker set-up. Please let me know how you guys would approach this project. As you can see, this was a state of the art system back in 1990 from Genesis. Any and all thought are welcome.
Thanks,
Mark
Attachments
Maybe. Simply Google "woofer repair near me" and you'll get a list of places. They'll have to look at the drivers to say whether or not they're fixable. If you need to replace. Parts Express is known for having a huge selection of drivers, and even has an online repair guide https://www.parts-express.com/repai...EC7hHM3TbRh2WCCS6UA6bmZyzmH5nxL0IbcHQpFE90zuP
I also found this online: https://reconingspeakers.com/
The weight of the accelerometer may have caused the driver's suspension to shift over time.
Weighting the cone with clay opposite to the direction of drag while propping up the other side for a time may bring it back into alignment.
Rotating the driver 180 degrees after may keep it in line.
Other than the accelerometer, the woofers look very generic, so reconing should be possible.
That said, any difference between the servo feedback driver and the others will cause the feedback to be incorrect, which could amplify, rather than decrease non linear distortion.
That sounds like a very reasonable / easy / low investment fix to me.
Some talk here about the sys, I think
https://www.whatsbestforum.com/threads/upgrading-genesis-iis.7139/
Suggestion to have the servo amp caps updated so it doesn't smoke itself, as the digital bits have gone the way of the dodo. But if the sys is pre-2006 perhaps switch to a non-feedback driver and amp? But figuring out + re-implementing the XO may be non-trivial.
Hi Adam,
I have been the guy who has added replacement part numbers for the old Genesis speakers in the forum. Gary Koh has not been much help other than to purchase new drivers. Heck, at 1k per driver from Gary, I am looking to see what alternatives are available. I had talked with Paul Mc Gowan and they had sent some schematics of the amplifier. The power supply caps have been replaced 2 years ago. So no issues on that. My Genesis system is dated from 1991, so its 34 years old. The drivers were rotated 180 degrees about 2 years ago as well.
At this time, I am hoping to identify the speaker/driver manufacture based on the numbers or basket. If that pans out I can see if replacement coils are available for 6 of the drivers. For the feedback coil I am not sure where to look. Gary said he has no parts for the old drivers. Other than that it comes down to removing the coil(s) and taking measurements if I reuse the old drivers. If not I need some guidance on what needs to be accomplished for a retro-fit in the existing cabinets. I appreciate the information and suggestions.
I measured the volume of the compartment for each driver and is 1.65cuft. What is your thougths to retrofit with the dual driver woofers from Rythmik. 8 drivers and 4 amplifiers total. Original hole diameter is 11 inches.
I'd like to have the cabinets looking as original as possible.
Mak
I'd like to have the cabinets looking as original as possible.
Mak