Question about Pioneer SHF21LR Speaker
Im new to this site.
I hope i dnt cause any confusion by posting in the wrong section
I have a Car Subwoofer equipped with its own amp, and i wanna hook it up to a home system.
If i plug the wires directly into the speaker coming from my home amp, bypassing the amp on the speaker, i get extremely low volume.
And i don't know where to hook up the Ground and Power wires coming from the speaker amp.
Thanks a million
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Posted on Jan 02, 2017
SOURCE: rear speaker install
the brown wire is the LR+,yellowLR-. The drk blue is the RR+,lt blue is the RR-.If this dose not work test speakers.IF speakers work make sure you have a good output from stereo with the old speakers.Are you using the factory deck?
Posted on Jan 06, 2008
It's possible (probable) that the head unit has a blown internal amplifier IC. Measure the DC voltage on each of the 8 speaker wires on the head unit. Place the black lead on the chassis of the head unit. Probe each wire with the red lead. All should read approximately 1/2 of the voltage on the yellow wire. If you get some that are significantly higher or lower, disconnect all speaker wires from the harness and measure again. If the voltage is still not ~1/2 of the voltage on the yellow wire, the IC is almost certainly defective.
For the external amp, you need to check the shield ground for the head unit. The following page shows you how.
Test RCA shield ground
Posted on Apr 22, 2008
As I implied earlier, take a clue from the physical style of connectors for both parts of the subwoofer function in the old and new receivers:
RCA connections are for Line Level signal between components only.
The input (bare wire) at the speaker is for AMPLIFIED signal.
You can't just modify one to fit the other and expect magic to happen. Be glad you didn't do it the other way around and modify an amplified (speaker level) outout into a Line Level input. You likely would have smoked that component.
Your subwoofer is a passive speaker, that is, like any other speaker it needs an amplifier. Many subs are self-powered (amp built-in) and they would mate well with the RCA sub output of the receiver.
Get yourself an Active (self-amplified) Subwoofer and run UN-MODIFIED RCA cables to it, according to its instructions, from the Sub Out of the receiver. Or get an amplifier between your receiver and the sub you have.
Posted on Feb 21, 2010
Testimonial: "Thank you for your help to an electronics layman!"
It could be your wiring as well. Sometimes, when speaker wire gets cut and grounded, like your factory wiring to your door speakers or you tap into facrotry speaker wires to add more, the load on your deck increases. When the volume gets to a certain level, it will cut off because of the heat produced to maintain the load.
Posted on Feb 25, 2010
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