1. How do I set up the USB in my computer? C1644U USB feature.

File includes detailed instructions with pictures. Quick Start USB

2. Which channel is the wireless system assigned to on C1648/C2448/C3248.

XP800L : ch 3&4

XP1000L: ch 5&6

RX1200L: ch 7&8

C1648, C1648(P): ch 1&2

C2448: ch 1&2 , ch 9&10

C3248: ch 1&2 , ch 25&26

For instructions on how to install the wireless system USM16-MC/BP click this link: How to install USM16-MC/BP wireless system

3. Why is my S400/S400D not powering on in battery mode. But it does work when I plug in the AC Cord.

If the battery is drained the S400 will not power ON. Plug in the AC Cord and let it charge. If you have an open battery fuse or if the battery is not good the S400 will not power ON even if charged for a few hours. The S400 has 2 fuses, an AC fuse which is above the AC jack, the other a battery fuse, it is inside the amp. Only have a certified technician repair the S400.

4. How to maintain the sliders "clean"?

Use a Q-tip and very gently run it across the inside of the slider. If you are not careful you could damage the surface of the slider, be very careful. Some people use Fader/slider spray to clean them. Make sure it's a fader/slider cleaner not all sprays work on potentiometers. If you are not sure ask a professional tech. WD40 is not a Potentiometer cleaner.

5. What is "PAN CONTROL"?

If you PAN to the left you are sending signal to the left, if you PAN to the right you are sending signal to the right side. Most of our mixers have a PAN control per channel. Check the PAN CONTROL if you are only getting signal on the right or the left channel. If you turned it by accident or if you forgot it's turned you may think that side is bad.

6. What USB software can I use with my C844U, C2444U, and C3244U?

The USB port in the C-mixer was tested in the following: CubaseLE, Traktion, Audacity, MAC OS 10.4.11, Garage band 1.1.0 more software to be added.

7. Can I add the USB feature on my C844, C2444, C3244?

No, the USB board needs a separate connector, which the old board won't have.

8. What to to if you have a scratchy volume potentiometer or slider?

The best thing to do is to replace it, but if that is not possible, try a Potentiometer cleaner. Not all Sprays are potentiometer cleaners make sure you pick the correct one. WD40 is NOT a potentiometer cleaner.

9. Can I add more than 2 batteries to my S400?

Carvin doesn't recommend that you add more than the standard 2 batteries.

10. What do the Charge indicator lights "LED's" indicate on my S400.

When the AC cord is plugged into the S400 the LED indicates the voltage going to the battery, not the total charge of the battery. When the AC cord is not plugged in, the LED indicates the battery charge.

11. What software can I used with my C844U, C1644U, C2444U, C3244U?

The following have been tested with Carvin Mixers. Using Windows XP ASIO4ALL DRIVER. CubaseLE, Traktion, Audacity, MAC OS 10.4.11, Garage Band 1.1.0, if you have any questions please contact us.

12. What USB software can I use with my C844U, C2444U, and C3244U?

The USB port in the C-mixer was tested in the following: CubaseLE, Traktion, Audacity, MAC OS 10.4.11, Garage band 1.1.0 more software to be added.

The Audacity Software is Free to Download at this site Audacity Software Download page

13. Is there any free software that I can use to record using my Carvin C3248 Mixer?

Try Audacity, it's free. Click this link Audacity Software Download page.

This software works with all of the mixer carvin makes, the C3248, C2448, C1648, C1648P.

14. With all the power amp classifications, there may be terms you are unfamiliar with, so this document contains a brief description of Carvin's professional power amplifier designs and terminology.

Click this link for a Description of the most common terms.

Carvin Professional Power Amp Design.PDF

15. How should I box my amp to send it in for repair?

The amp should be boxed up in its original packaging. If that is not possible, then box it up as best you can. Make sure to leave a protective cushion between the amp and the box. During shipping the amp will be exposed to rough handling. If improperly boxed, the unit will be damaged. Carvin is not responsible for shipping damage due to improper boxing. Remember to fill out your RMA form.

16. What is the AC Cord wire gauge I should use with my amp?
17. How to open the Guitar Tweed Case, or Black case.

Slide the lock (round circular part of the lock) to the left to open case. Like indicated in the picture, and the lever will pop out.

The case will not be locked, the key is inside the case. On the right hand lock slide to the right.

Click on link, to see video: How to open guitar case.

18. What does a bad tube look like? How do I know if my tubes are good or not?

Look at this picture above, the two tubes on the left are bad. The two on the right are good.

Note the red glow on the two tubes on the Left side. It's best to replace all 4 tubes when this happens, you will have to Bias the amp. We have instructions on how to Bias your amp, on the "How to Bias" tab.

If your amp is under warranty, call customer service at (800) 854-2235 for a new set.

19. Does Carvin offer a trade in for the wireless that will not work after June, 2010 because of the frequency used?

Carvin offers a 100 Dollar credit towards a replacement system, which are in the 638-698Mhz range(NEW), older is (700-800Mhz). You don't have to send in your old wireless. The credit applies to any owner not just the original owner. A serial number must be provided. Valid until Jan, 2013. Please call Carvin Sales at 800-854-2235

20. What is the availability of the AG100D Chassis replacement.

AG100D Replacement Chassis:
Availability: Please call a head of time, before going to the Carvin Store to pick it up. Units upon request will be available on Thursdays if requested with sufficient time of notice.
San Diego Store: (858)487-8700 -1 week availability-



Bring the original amp with you; you don't need to bring the cabinet. It is important that you call a head of time because the amp may not be in stock.

Installation Procedures:
Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp. Take out the 4 screws on the top, and then slide the amp out through the front of the cabinet. Reverse for installation.

Carvin Service - 1(800) 854 2235

21. What is the availability of the SX300 Chassis.

SX300 Replacement Chassis:
Availability: Please call a head of time, before going to the Carvin Store to pick it up. Units upon request will be available on Thursdays if requested with sufficient time of notice.
San Diego Store: (858)487-8700 - 1 Week Availability -



Bring the original amp with you; you don't need to bring the cabinet. It is important that you call a head of time because the amp may not be in stock.

Installation Procedures:
Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp.

Take out the 4 screws on the back to remove the back cover. Then remove 6 screws on the top of the cabinet, then slide out the amp, through the back of the cabinet. Reverse for installation.

Carvin Service 1(800) 854-2235

22. What is the availability of the SX200 Chassis.

SX200 Replacement Chassis:
Availability: Please call a head of time, before going to the Carvin Store to pick it up. Units upon request will be available on Thursdays if requested with sufficient time of notice.
San Diego Store: (858)487-8700 - 1 Week Availability -



Bring the original amp with you; you don't need to bring the cabinet. It is important that you call a head of time because the amp may not be in stock.

Installation Procedures:
Unplug the Speaker cabinet from the back of the amp. Unplug the power Cord from the Amp.

Take out the 4 screws on the back to remove the back cover. Then remove 6 screws on the top of the cabinet, then slide out the amp, through the back of the cabinet. Reverse for installation.

Carvin Service 1(800) 854-2235

23. Where can I find information on Old Carvin Equipment from the 60s, 70s, 80s.

Try CarvinMuseum.com we have a lot of manuals and schematics from the early years.

24. Where can I find the Return Form?

Click the link below to download the file.

RETURN FORM

For any "return" questions please call 1-800-854-2235

25. Where can I find the Return for Repair Form? (RMA form)

The form can be located at the link below:

Return for Repair form RMA

26. What is the Thiele?

The Thiele specifications are a set of parameters used to describe the audio characteristics of a speaker driver.

27. Can a Carvin Tech Modify my amps if I send them in?

No. Carvin Technicians are not permitted to MOD (modify) any amplifier. It is against company policy. Carvin does not repair modified amplifiers. If a modification is found during a repair, then the component values will be returned to factory specs (if it is not rejected).

28. What is Moisture and Corrosion, and why is that bad?

Moisture is the presence of water in trace amounts. It can cause rot in wood and corrosion in metals, both of which are the main materials in your amplifier and cabinet. When moisture goes inside the amp it can corrode the input and output jacks (causing intermittent crackling, popping, and volume loss), damage the cables inside the amp, and short traces on the circuit boards. If corrosion is present on any of the jacks, the best thing to do is to replace them. For light corrosion, applying contact cleaner to the jacks will help.

29. What do I do if I get Dust or Sand inside my gear?

Dust and/or sand should never go inside the amp. If any debris goes inside try to clean it out as best you can. Dust and sand can block the fan and vents, causing the amp to overheat, and they can also short components inside. Any debris inside the chassis will also absorb moisture and cause corrosion to form on chassis and circuitry.

30. What do I do if my amp gets struck by Lightning?

Lightning can cause extreme and intermittent failures to all electrical equipment. Most of these issues are very difficult to repair and usually return after time. In the case of a direct hit, the amp will likely not work well ever again. If there was a black out for a few seconds and the amp does not power back ON, check the fuse. For a replacement fuse click on "Fuse and Bias Values" in the FAQ Categories menu.

31. When I tap the top of my amp the signal goes in and out, what do I do?

This is a characteristic of something inside the amp being loose. In most cases it is a loose connector, but it can also be dirty or corroded contacts, a bad ribbon cable, or broken solder joints. To check this, take the amp out of the enclosure and verify that all harnesses and connectors are installed correctly. Disconnect and reconnect the ribbon cables. Power on your amp and verify that it is working properly. If the problem persists, you may have to replace a connector and do further troubleshooting. A cable can work its way out from the vibration of a speaker. For a replacement cable click on "Parts".