Input plug i bought a used amp and theye didnt have the high input plug can i order one?

Greetings! Ok, your amp has an XLR (3-prong) Low-Impedance input on Channel 1 for a Mic. All the other inputs are 1/4" High Impedance inputs, which are for instruments and/or other High Impedance items including low quality High Impedance Microphones. The SM48S is a high quality Low Impedance microphone, so if you use it with a 1/4" plug, it will be in a High Impedance channel, and will be very LOW in volume in comparison with everything else. So, you must use an XLR (3 prong) cable from the Mic to the Channel 1 input on your amp. That will do the trick. Good Luck with your new amp and Mic!

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Yes you can use the equalizer without an amplifier. That is what the high level speaker inputs are for. You simply take the positive and negative from a speaker and hook it up to the positive and negative high level speaker inputs on the equalizer.

First, know that you need either high level input or low level input, but not both. Low level input is preferred (RCA cables). If you must use high level input because your head unit doesn't have RCA jacks, you connect the speaker outputs from the head unit to the high level input of your amp. The high level input plug probably has a black wire, this is "signal reference ground". A pair of grey wires which are right positive (grey) and right negative (grey with black stripe). And a pair of white wires, left positive (white) and left negative (white with black stripe).

which pre-amp do you use, since the pre-amp and usb are cheap made components, especially pro-ject, i was amazed which low quality pre-amp i bought for 250 euro.

It's highly unlikely that something failed in shipping. Those mics are built like tanks. They were probably messed up before you bought them or are counterfeits.

The piezo pickups for violins REQUIRE a high impedance input preamp.

The measured impedance of My wife's violin is on the order of 2 megohms.

It sounds like you are having cable connection problems. If you don't have a preamp right at the vilin, then use a VERY short high impedance instrument cable.

Most of the Focusrite mic preamps I looked at had input impedance around 5K ohms which is unsuitable for the piezo pickups.

Here we use an Autolycus pickup on an acoustical vilin and an X2 wireless system. The transmiter has a very high input impedance and the resulting system sounds like a violin.

Some amps themselves DO have a high input impedance, but many designed for guitars do not. Long cables, especially low impedance ones, load the piezo pickup with capacitance which clobbers the high frequency response.

i just sent you the manual for your am everything you need to know is in there. i also have tht plug if you need it. but will only be used for high level inputs for factory radio's if you have a after market radio use your rca jacks. or if you want you could use a converter if you have a factory radio that makes speakers outputs from the radiointo rca jack that will go into the amp. the rca'sare the best way it will sound much cleaner. good luck

The pb180 has High Input receptacles on the back end. They are marked High Input and identified as Channels 1&2 left/right, and channels 3&4 left/right. You will need to identify all speaker wires coming from your head unit ( left front +&--) , and so on. You will be sending the speaker wires from the head unit to the pb180's High Inputs. In other words, the front left speaker wires(+&-) from the head unit will go to the High Input Channels 1&2 side, left input of the pb180, and so on, so the speaker wires coming out of the head unit will need to be cut. And LABEL all sets of speaker wires before you cut them! Then on the OUTPUT end of the pb180, you will be sending the wires back to the the respective speaker wires which are going to the speakers. So it's out from head unit to pb180 and out from pb180 to speakers.
Hopefully you have the plugs that Pyramid uses for the speaker wire inputs to the amp. If not you have to get creative, and make up terminals to fit into the input receptacles. Maybe a wire terminal from Radio shack will fit those pins..
Also, if you go on line: Google search "Pyramid auto amps" and click on "SEARCH" (upper right hand) of their Web Page. Plug in your model number like this, pb180, and you'll be able to download the manual for this amp. The manual has a full description of the wiring options.

Hope this was helpful and Good Luck!

Hello gmb_66,

You did not specify exactly which Jensen amp you have. None of the Jensen PowerPlus series I found had high-level inputs. You can go here and select your amp to download the manual. They should also have the connector for speaker inputs.

Most amps that have both high-level and RCA inputs allow you to use one or the other, but not both at the same time. If your head unit has RCA ourputs, those would be the ones to use, because they generally provide a cleaner signal to the amp with less noise.

Hope this helps.