20 Most Recent
Crown XTi 6000 Amp Power Questions & Answers
I have four xti amps
Assuming the behavior is instantaneous and doesn't wait for thermal change, you have a nasty ground loop problem that is coupling into the amps. Make sure ALL the speaker leads use TWISTED pairs, not the flat zip cord type wires. Make sure ALL the audio cables to these from the mixer are BALANCED using either XLR or TRS cables and not plain unbalanced cables like guitar cables.
Make sure the receptacle these amps are plugged into have grounding pins. Here is the biggee: Make sure ALL interconnectd equipment is powered from the SAME receptacle or POWER conditioning module. Using several building receptacles to power the amps and the mixer and any CD players is a NO-NO and is asking for the problem you are seeing. I can't go into the electrical engineering reason for this other than to say multiple feeds have resistance and inductance between them causing "ground bounce" that cross couples in systems like this. With this much power you should be using a large power conditioner and distribution unit at your venue. The pro's run power from a stage with the amps back to the mixer alongside the snake as an example.
Fix any/all of these problems you might have and if you still have trouble get back to me as these problems are a specialty of mine.
Peavey cs1000 x
The most likely case is that one of the main output transistors (if which there are many) is shorted. When the protect circuit senses DC on the final output, it will not allow the output relay to come on to protect the speakers from raw DC. With the power removed, you can check between each outputs Emitter and Collector and you will probably find close to zero ohms. From that point you need to unsolder each of the pins of the bad channel until you find the shorted device(s) and replace them.
2/7/2024 9:32:20 AM •
Music
•
Answered
on Feb 07, 2024
No or very little sound from Fender passport
Depending on the model, there are four around that date, it could be the insert jacks are tarnished reducing the signal flow between the pre amp stage and digital power amplifier. It could be the power amplifier has failed. It could even be customer error in wiring.
This assumes there is the correct level of signal entering the input sockets of course.
12/31/2023 8:25:12 AM •
Music
•
Answered
on Dec 31, 2023
Breaking Roland RD 600 hammers
The Roland RD-600 is a digital piano, and its hammer action mechanism is designed to simulate the feel of an acoustic piano. The hammers in digital pianos like the RD-600 are typically made of materials like plastic or a combination of materials to replicate the weighted feel of acoustic piano keys.
The breaking of hammers in a digital piano is not a common issue, and it's not typically related to the age of the instrument alone. Several factors could contribute to the breakage of hammers, and it's essential to consider the following possibilities:
- Excessive Force: If the keys are played with excessive force or if there's any physical damage to the instrument, it could lead to the breakage of hammers.
- Material Quality: The quality of materials used in the construction of the hammers can impact their durability. If the hammers are made from subpar materials, they may be more prone to breaking.
- Manufacturing Defects: In some cases, there could be manufacturing defects that make the hammers more susceptible to breakage.
- Maintenance: Lack of proper maintenance, such as cleaning and regular inspection, may contribute to the wear and tear of components, including hammers.
If you've observed a pattern of hammers breaking with regularity, it might be worth investigating the specific cause. If it's due to excessive force or physical damage, adjusting playing habits and taking care during transport can help mitigate the issue.
As for whether it's worth purchasing new hammers from Roland, it depends on the extent of the damage and the overall condition of the instrument. If the RD-600 is in good condition otherwise and you enjoy playing it, replacing the hammers could be a reasonable option. However, you may want to assess the cost of replacement hammers compared to the overall value of the instrument, factoring in the cost of a used RD-600 and any potential future maintenance needs.
11/12/2023 2:54:05 PM •
Music
•
Answered
on Nov 12, 2023
Squeaky bass pedal board Roland PK5
I know this post is super old, but it was one of the first hits I had when searching this problem, so I'll post it here in the hopes that it will help someone. I found that I had to get under the cover, and clean/lube the plastic post on the assembly that pushes the button on the circuit board. It's a plastic post that slides in a plastic slot. I think it just gets contaminated with dust and that is the main cause. Philips screwdriver gets you under the cover and removes the two screws that hold that assembly together. Obviously be really careful to not break the plastic post. Looks like the wrong kind of force would snap it very easily. I used Deoxit Fader Lube, sprayed on a rag, and wiped the surfaces where the plastic parts touch. Put it back together and worked the pedal a few times, no squeak.
9/9/2023 3:16:17 PM •
Music
•
Answered
on Sep 09, 2023
Not finding what you are looking for?