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AMP Problems

Started by SLIPPIN · 25 Oct 2002 · 5 replies

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SLIPPINArchived member
I have a 400 watt amp but i think its pretty old and it lets you run 2 bridged or 4 single. it a has two gain control knobby things but isnt there supposed to be one to let you hook up a sub and play the bass, when i connect it it plays music thru the sub just like its a speaker. Please Help cos its not worth doing if i cant do it right..
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Qik_HDTArchived member
If it's a 4 channel amp, you can run two subs from it. Make sure that you have them bridged properly, and there should be two little switches near the gain conrols that say HPF/LPF. If you're running subs make sure the slide is set to LPF. This stands for Low Pass Frequency, which means that only low frequencies (determined by the amp) can reach the sub, resulting in the doof doof sound Enjoy!
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Morgz85Archived member
true, or only one set of 2 channels (1 bridged) may only be able to run a low pass filter. Just check, post all of the switches and controls it has on the amp...what sort of amp is it btw??
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KylieArchived member
Not all Amps that are Bridgeable have a Low/High Pass Crossover as well... And as you say that its an older Amp it might not have one, you'll need to use a seperate Low Pass Crossover then... Some original photos have not been recovered yet.
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BurgundyCalaisArchived member
LPF = Low Pass Filter
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Ads SL/EArchived member
go to jaycar electronics and get yourself an external LPF or just up grade the amp.
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