Ppm series professional powered mixers: 406m, 408m, 808m, 408s and 808s service manual 1999, 2000 mackie designs, inc. 820-185-00 efx mon hi 12khz hi 12khz mid 2.5khz mon mid 2.5khz mon hi 12khz mid 2.5khz mon hi 12khz mid 2.5khz mon hi 12khz mid 2.5khz mon hi 12khz mid 2.5khz mon hi 12khz mid 2.5kh...
2 service on this equipment is to be performed by experienced repair technicians only.
3 contents introduction ........................................................................... 3 overview ................................................................................. 4 808s front panel ..................................................................... 5 block diagrams ....
4 overview the powered mixer series consists of 5 models: the 406m, 408m, 408s, 808m and 808s. Each consists of five circuit boards: effects, amplifier, mixer, output and ac power. This table shows which boards are used in each mixer. Note: each schematic chapter is labeled with the number of the bo...
5 808s front panel the amplifier board is connected to the rear panel heatsink. The output board and ac power board are fitted to the rear panel. The effects board is a small circuit piggy- backed to the mixer board. Behind the front panel is the mixer board. Power transformer efx mon hi 12khz hi 12...
6 block diagram (mono models: 406m, 408m, 808m) 63 125 250 500 1k 2k 4k 8k 16k efx ret l efx ret r efx wide 10 5 0 -5 -10 -15 -30 -40 -20db l r mid hi 80 2k5 12k lo 75hz hpf 10 5 0 -5 -10 -15 -30 -40 75hz hpf 63 125 250 500 1k 2k 4k 8k 16k mid hi 80 2k5 12k lo compressor compressor phant om trim (in...
7 block diagram (stereo models: 408s, 808s) 63 125 250 500 1k 2k 4k 8k 16k d amping/depth time/ra te efx wide 10 5 0 -5 -10 -15 -30 -40 -20db l r mid hi 80 2k5 12k lo 75hz hpf 75hz hpf 63 125 250 500 1k 2k 4k 8k 16k 10 5 0 -5 -10 -15 -30 -40 10 5 0 -5 -10 -15 -30 -40 75hz hpf 63 125 250 500 1k 2k 4k...
8 maximum voltage gain mic input to insert output: 40 db tape output: 60 db main mixer output: 72 db line input to insert output: 20 db tape output: 20 db main mixer output: 52 db stereo line input to tape output: 20 db main mixer output: 32 db tape input to tape output: 10 db main mixer output: 22 ...
9 maximum power at 1% thd, midband, both channels driven 406m, 408m, 408s 250 watts per channel into 2 Ω 200 watts per channel into 4 Ω 125 watts per channel into 8 Ω 808m, 808s 600 watts per channel into 2 Ω 450 watts per channel into 4 Ω 300 watts per channel into 8 Ω continuous sine wave average ...
10 808m/808s power amplifier theory of operation the power amplifier used in the 800 series powered mixer is typically referred to as having a high efficiency output stage. It uses a class-h topology. When signal levels are low, one can pull power from the +/-45v supplies. Only when signal levels ar...
11 referring to the channel-1 switching circuit shown here. There are two pairs of jumper resistors. The first pair (r121, r106) allow both class-h switches to operate in tandem. When operating in tandem, if the positive switch actuates, the negative switch also does, and visa versa. By switching bo...
12 r104 (both 2.2k ohms) allowing around 1.4ma to flow into pin-12. This current flows out of pin-3 and approximately half of it flows through d38 / r83 and the other half to the emitter of common base amplifier q34. The current flowing in the collector of q34, pulls the high side of r120 to ground ...
13 warning: fusible resistors must only be replaced by the exact replacement parts. Always check the parts lists to verify which resistors are the fusible type before replacing any resistors in this amplifier. You must perform the following leakage test before returning the mixer to your customer. T...
14 power consumption with no signal and no load, the power consumption from the ac mains should be: variac power consumption up to 40vac up to 60vac up to 120vac dc supplies set the variac up to 120vac (us models) measure the dc supplies: (see page 193-5 for the pcb layout) +96 to +98vdc @pcb test p...
15 power consumption with no signal and no load, the power consumption from the ac mains should be: variac power consumption up to 40vac up to 60vac up to 120vac dc supplies set the variac up to 120vac (us models) measure the dc supplies: (see page 204-4 for the pcb layout) +69 to +71vdc q5 pin 2 –6...
16 efx signal flow damping/depth time/rate efx wide efx l r efx efx to monitor efx to main efx bypass efx clip efx return l efx send off to +10db off to +12db off to +10db efx return r efx foot switch level mon emac dsp efx ret l efx ret r efx wide damping/depth time/rate efx mon main efx efx to mon...
17 j1-1 j1-2 j1 j1-3 j1-4 j1-5 j1-6 j1-7 j1-8 j1-9 j1-10 j1-11 j1-12 j1-13 j1-14 j1-15 j1-16 flag in bank +5v dgnd mono in agnd right out left out pot1 pot2 clip_led n/c bit 0 bit 1 bit 2 bit 3 this section of the schematic shows the single analog signal going into the efx circuit board. It also sho...
18 flag in bank +5v dgnd mono in agnd right out left out pot1 pot2 clip_led n/c bit 0 bit 1 bit 2 bit 3 efx overview the efx circuit board schematics and pcb layouts are shown in chapter 192. The circuit is made from the following main elements: clock, codec, dsp and sram part no. Description value ...
19 j35 on the 206 mixer circuit board, this is j31 12 11 10 9 8 7 6 5 4 3 2 1 left comp right comp left amp left amp gnd right amp gnd right amp +5v -16v +16v connectors mixer to efx board the details for the mixer to efx board connector are shown on the previous page. Mixer to amplifier board the c...
20 output board the amplifier channel outputs connect to j3 on the output board. J3 orange, ch2 ( + ) grey, ch2 ( - ) black, ch1( - ) red, ch1 ( + ).
