Adding speakers to Fender Passpost 500 Amp system

8 Ohm. Here is a nice trick for you. If you use the ext speaker wire it the wrong way the + to black and the - to red. This puts the speaker out of phase with the others. Some like this effect. Have Fun

IF You don't have a separate external input jack. then you need to determine the overall impedance (ohm alottment ). so it will read something like 6, 8, or 16 ohm max. at that point look to see what your speaker output reads.(should be a plate on the speaker) if not, then disconnect speaker and put an ohm meter on it . it will give you a resistance reading , that is your ohms. so toadd a speaker, you must maintain not to exceed the rating. in hooking up. you can do it one of two ways. the first method woukld be , from the amp go positive to pos. side of speaker, and from the speaker neg. sid, go to the pos side of the speaker your adding . from the neg. side of that speaker go back to neg. side of amp. ( rthat is known as a series hook up. this doubles the ohm output of the two speakers ) - turns 4 ohms into 8, 8 into 16, etc. the other way is known as parallel. (from the amp take the pos.side and make a "y" and send those leads to each appropriate speaker. positive to positive. and do the same with the negatives. *this cuts your ohms in half. 4 int o 2, 8 into 4, etc. = hope that helps

http://cie-wc.edu/Series_Parallel_9_14.pdf
Not recommended.
you could add 3 more 8 ohm speakers in series / parallel wiring and keep an 8 ohm load to the amp, or
2x 4 ohm speakers in series, or
2x 16 ohm speakers in parallel

You have probably blown the speaker... swap left and right to verify it is the speaker... These speakers are NOT too well suited for bass... They typically have low impedance speakers in series. You run a risk of popping the amp running with a blown speaker. You MAY have to replace all the speakers in the defective cabinet. ALL the speakers must be identical. The Passport 250 uses four 2 ohm speakers in series... not sure about the 500. It may have two 8 ohm in parallel. Do not use the speaker until it is fixed... the amps are hard to repair if a defective speaker cooks them.

Well... you probably won't like this, but here is some info: In bridged mode, a different Speakon to speaker cable is required from only the B... it is wired differently and you can only use one of the plugs. The speaker or speaker system CANNOT be less than 8 ohms in bridged mode... this precludes using speakers in parallel or multiple speakers that are less than 16 ohm impedance... such speakers are NOT commonly available as most are either 4 or 8 ohm. There is a slide switch for bridged mode on the face of the mixer. Next thing you won't like... The 1200 Watts specification is PEAK power, NOT RMS... You can get 400 watts RMS per side USING 4 ohm speakers. If you use 8 ohm speakers, each of those will get 200 watts. I use this mixer myself and ALSO repair them. The voltage swing at the outputs is about +/-60 volts MAX (peak). This is about 40 volts RMS by the time the circuit LOSSES are taken into account. Across a 4 ohm speaker you get 10 amps times the 40 volts or 400 watts. Across an 8 ohm you get 5 amps or 200 watts. The voltage rails in the switching amp are +/-70 volts DC so these are reasonable values. Bridged mode just uses both sides of the amp driven in opposite directions for higher voltage out BUT you have to use no less than a single 8 ohm speaker so there is NO advantage to bridged mode power wise. IF YOU NEED more power, use extra speakers from an additonal amp driven by the 1/4 TRS mains output jacks OR use additonal POWERED speakers driven from the same jacks. Please read my tip about the hazard regarding the SLEEVE of the cahnnel A cable when using Speakon to 1/4 plug cables being the HOT and the tip being the cold for channel A. Ground the sleeve accidentally and goodbye channel A amp...

First off it's outputs to your speakers. If you had an extra set of powered or amplified speakers you could "Y" cable your speaker outputs. Your passive speakers won't work without an amp. You really need powered speakers or an amp for your extra speakers. (if you had powered/amp'd speakers you could run them off one of you "aux" out for monitors. Do not daisy chain your speakers connecting twi together, you'll change the resistance/ohms and damage your speakers. Trust me, I do this for a living.

that depends on your speakers, not the mixer. the amp should be matched to the speakers, in watts and in ohmage. for example, 400 watt, 8 ohm speakers should get an amp that runs at 350-500 watts at 8 ohms.

Best way is to use a 1/8 TRS (stereo) to 1/4 TRS (stereo) cable from the PC into the Stereo 1/4 inch jacks right below the RCA stereo input jacks.

TRS stands for tip-ring-sleeve which means the jacks have the extra "ring" over a mono jack.

Hi there. If 10" speakers are 8 or 16 ohm, parallel them. If they are 4 ohm, series them. if "External speaker" output is rated down to 4 ohm. If no external speaker jack, you'll have to tap into existing speaker jack with a "Y". Check the minimum ohm load for the amp.
Thanks
Paul

Run out of the stereo output jacks into a separate amplifier and speakers. The amplifier send jack only sends signal from the particular channel it is part of. In other words to get all the signals from all the channels you would need another mixer, amp and speakers. It is easier to use the stereo out which will give you all the signals. If you only use left out or right out make note of where your panpot is set for each channel.