Top 20 Mackie 1202vlz3 12 Channel Mixer Questions & Answers

Cleaning may be an issue, maybe try putting something under it to air can get to the bottom. I've had to do that with my mixer.

Apart from the info needed to an accurate diagnosis mixers have been using 4560/4580 opamps since long time ago, some are SOIC or for insert pins in chassis then solder them or lately SMD devices, let me know a bit more such as Mixer brand and What primary circuit means?

That's basically normal actually...however it depends on which aux send you're using. If you use aux 1 for the effects, you can use the pre/post switch on the master aux 1 send to switch it to pst fader....now your mute switch should kill the effects as well. Aux 2 is good to use for monitors where you don't need to return them to the mixer.

Just use balanced audio interconnect cables (XLR or TRS) between the mixer and the M-Audio interface.

Look here:

http://elektrotanya.com/mackie_1202-vlz_pro_schematic_diagram.pdf/download.html

Scroll down to "get manual" and click on it to download. IGNORE other download links.

The internal audio systems in the PC's are inadequate for high quality work. You should get an external audio system that attaches via firewire or USB to your MAC. Then use balanced cables from the mixer to this audio interface. There are MANY different audio interfaces... Search the music equipment suppliers in the "recording" section of their catalog...

You connect the powered 15's using balanced cables. The passive speakers you will have to get an amplifier for as the mixer does NOT have a powered output, only line-level audio outputs.
The powered speakers MAY have audio line level outputs to continue to other powered speakers or, as in your case, external amplifiers to drive your passive speakers.
Remember to power ALL interconnected equipment from the same receptacle or source to avoid ground bounce faults that can destroy sensitive circuits in your equipment.

one CAN join two soundboards BUT at the expense of a higher noise level. You would come out of mains of the slave one and into inputs of the second (master) board. There are many configurations one could do I would suggest bringing these inouts from the slave board into the "AUX RETURNS" jacks.
Use TRS cables (balanced) for the interconnects.

With a stereo splitter cable that takes the stereo 1/8 plug of the computer into two RCA plugs you could go into the "Tape Input" of the mixer... OR take a 1/8 stereo splitter cable from the PC splitting to a pair of 1/4 inch plugs go into one of the 4 stereo input pairs on the mixer... like 7 and 8 or 9 and 10 for example.

use the xlr (3 prong) main left and right outputs of the board. get xlr to 1/4 inch cables. one end will be 3 prong, to plug into the mixer, then the other end will be a mono 1/4 inch plug, like a big headphone plug. Then you have to get a dual mono 1/4 inch to stereo 1/8 inch adapter and plug it noto the line in. if there is no lone in, but a microphone jack instead, you will get a mono signal instead of a stereo signal. in this case, just use 1 channel of the mixer, instead of both of the stereo outs, and use a single mono 1/4 inch to mono 1/8 inch adapter.

the xlr to 1/4 inch cables can be purchased at a music store. the 1/4 inch to 1/8 inch adapters will probably need to be purchased at radio shack.

This could be caused by one or more of numerous issues. Generally speaking, it will most likely be a job for an electronics technician and could become expensive, depending on the root cause. If the seller of the console did not list this problem in the product description in the auction, I would definitely contact them and negotiate a reduction in price after you establish the cost of repair. A shop would be able to give you a "ballpark" idea of the cost (at least a minimum to even look at the console). You also should have the option to return the unit to the seller, unless specified otherwise, for a refund.

This will depend upon the speakers. I would suggest that you place it in the +4 position with the main slider down and slowly increase it with the speakers set as you normally would have them. If the sound quality is poor at low volumes, then you are overdriving the inputs to the speakers and need to use the other option from the mixer. If you still have questions, please post what you are using for powered speakers and I can better guide you.

Dan

thaqts a little vague, what equitment do you have to hook up to it, specifically. i need makes and model numbers for everything you plan to hook up, microphones, amplifiers, speakers, effects processors, compressors, corssovers or varieties of electronic and acoustic instruments.

wiothout specifics, all i can say is "plug mics into whatevver mic imputs, and keyboards into whatever input, and your amps/speakers to the main outputs"

you are asking for quite a lot, try to be more specific about your external equiptment, and try to narrow your question down a bit, and i will be happy to help you out.

Your power amp should be connected to MAIN OUT left and right. NOT the MAIN "in".

The CD is connected correctely as you described. Make sure the CD has a line level output to match the input expected by the mixer.
Note:Walkman style CD players require a special cable to go between 1/8 inch stereo to dual RCA plugs.

You have to advance the MAIN fader.

You should be using TRS interconnect cables from the mixer to your amps OR using XLR cables.

Your best bet is to contact Mackie directly for a distributor in the UK.

The contact information is listed below.

Dan

LOUD Technologies Europe PLC GENERAL CONTACT Unit 1 Century Point, Halifax Road. Cressex Business Park
High Wycombe, BUCKS, HP12 3SL, UK
Phone: + 44 (0) 1494 557 398
SALES Email: [email protected]
SERVICE Email: [email protected]

Refer to your EV user manual, page 23, part 2.

You run the outputs of the Mackie into the stereo "returns" on the EV.

Use TRS interconnect cables as these are balanced lines.

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RCA jacks do NOT connect to the USB. One is aanalog audio, the other digital.

The schematics don't show this, however reverse engineering this there are two windings... one is for the phantom power of 48 VDC... this winding needs to provide about 55 to 60 volts DC to the 48 volt regulator. EXPECT around 40 to 50 volts AC on this winding to the full wave bridge of D1,2,3,8.

The +/- 16 volt power regulated by LM317 and LM337 regulators will likely require about 20 volts DC into the regulators. It will be less than 25 volts because there is a 25 volt cap filtering.

Given a 20 volt DC from the diodes D5,6 and diodes D4,7 the transformer will be around 15 VAC either side of the centertap.

A minimum would be 12.5 VAC and say 18 VAC either side of center.

You should see near pure DC across C1 and C2 with only a little ripple of 2 volts MAX. The ripple should be 120 Hz. An oscilloscope is your friend in this area !!!

The schematics do not show the actual voltage.

From the design, the phantom power secpndary should be around 35 to 45 volts AC.

The 16 volt supplies would require a secondary winding that will be around 26 to 32 volts center tapped.

Transformers are quite reliable and unless a voltage is missing, the transformer is likely OK.

The most suspect items are the electrolytic filter caps if the voltage is not the design 16 plus and minus values.