[GMK88]

I have in my possession.

1 peavey PA amp -
1 QSC 500ti amp-

2 peavy 12"/10" cabinet speakers.
2 JLaudio 13.5" subwoofers in an enclosure...

The QSC amp is filtered to play anything less than I think 75hz. So it should be connected to the subwoofers.

Whats the best way to connect all this together with one input.

 

[lovinthehd]

What are you going to use for pre-amp?

Those are passive JL subs?

QSC can probably be configured otherwise as well?

What do you mean by one input? One single source undetermined or do you have something in mind?

 

[GMK88]

Im not sure what a preamp is but I also have a peavey 3 channel mixer.

What does passive mean? they're 8ohm speakers, wired to 4ohms.

I want to play my music off my computer to these 2 amps and 6 speakers.

thanks for the reply.

 

[GMK88]

I have many many speaker cables, RCA'S, females/males 3.5mm 1/4" jacks, 3 pin Euro Plugs. I think I could do it, If I knew how...once its running, I want to probably do a nice audio card in my computer.

 

[lovinthehd]

There are passive speakers and subs, these need external amplification. Active subs and speakers include their own amplification. Your amps can provide such amplification to your passive speakers/subs, but not all sources have output at such a level to provide sufficient signal for an amplifier. It sounds like your speakers/subs are passive but not sure. A pre-amplifier generally handles switching among various sources, provides signal processing, and passes on a sufficient signal for your amps. Your mixer can act as preamp and your sound card as well; some use a dedicated pre-amp or processor with external amps, some use audio video receivers (avrs). Depends on what your sources are as to what's most appropriate.

Look at the manuals for each (or the backs of the units) to see what connectors you'll need. What output types does your sound card and mixer have? What are the input options on the amps? They vary...

 

[GMK88]

Okay, I'll do some research.

 

[GMK88]

Hello,

Shure scm262 -

http://ecx.images-amazon.com/images/I/61em45uHq8L.jpg

Inputs 2 - Balanced XLR Microphone
1 - Balanced 1/4" Phone
3 - (L/R) Stereo RCA Phono
Output 2 - (L/R) Stereo Mic/Line switchable 1/4" Phone
2 - (L/R) Stereo AUX unbalanced RCA Phono

Peavey XR650 -

http://www.musiciansfriend.com/pro-audio/peavey-xr560-200w-5-channel-powered-mixer

200W at 4 ohms powered mixer
7-band output EQ with FLS
DDT technology
Digital reverb
15V phantom power
Tape in/out RCA connectors
Each channel has a monitor and effects send
2-band EQ

QSC 500TI -

http://www.parts-express.com/qsc-isa-500ti-70v-dual-channel-amplifier--245-697?utm_source=google&utm_medium=cpc&utm_campaign=pla

Specifications: • Power output, stereo mode (EIA 1 kHz, both channels driven): 260 watts x 2 (8 ohms); 420 watts x 2 (4 ohms); 700 watts x 2 (2 ohms) • Power output, XF output power, stereo mode: 500 watts x 2 (70V), 300 watts x 2 (25V) • Power output, bridged mono mode (EIA 1 kHz): 900 watts x 1 (8 ohms), 1,400 watts x 1 (4 ohms) • Distortion (typical):

 

[GMK88]

alright thanks but I got it wired and working myself...

My problem now is that I have some Filter issues on my subs, I can hear faint voices. I only want bass.

 

[lovinthehd]

Crossovers aren't brick walls, depending on the dsp in one of those amps you may be able to select a crossover point and slope, maybe just point. You could try crossing lower....

 

[GMK88]

any ideas on how.

 

[lovinthehd]

any ideas on how.

Read the amp manuals to see if there is a crossover function?

 

[GMK88]

ISA 300Ti, ISA 500Ti, and ISA 800Ti: The
Low Frequency Filters are always active
and not defeatable. Each channel has a
12dB per octave Low Frequency filter to
prevent saturation of the 70V loudspeaker
transformers. This reduces distortion and
prevents amplifier overload. The 50 Hz setting
usually works well with high quality
loudspeaker transformers. The 75 Hz setting
works well with speech-grade loudspeakers
and transformers


wth does this mean.

 

[lovinthehd]

Sounds like you have a constant voltage 70V PA amplifier. http://www.crownaudio.com/media/pdf/amps/138905-1_10-05_constant_voltage.pdf and http://www.belden.com/blog/broadcastav/All-About-70-volt-Speaker-Systems.cfm

I've not used one. Were all these amps and speakers used together in a system before you got them?

 

[GMK88]

Specifications: ISA 300Ti, ISA 500Ti, and ISA 800Ti
OUTPUT POWER in watts ISA 300Ti ISA 500Ti ISA 800Ti
FTC:
8 ohms, 2 channels driven 185 260 450
(20 Hz - 20 kHz, 0.1% THD)
4 ohms 2 channels driven 280 400 650
(20 Hz - 20 kHz, 0.1% THD)
EIA:
16 ohms, 1 channel driven 100 140 250
(1 kHz, 0.1% THD)
8 ohms, 1 channel driven 200 280 475
(1 kHz, 0.1% THD)
4 ohms, 1 channel driven 300 450 750
(1 kHz, 0.1% THD)
2 ohms, 2 channels driven 430 700 1200
(1 kHz, 1.0% THD)
Bridged Mono:
16 ohms 370 520 900
(20 Hz - 20 kHz, 0.1% THD)
8 ohms 600 900 1500
(1 kHz, 0.1% THD)
4 ohms 830 1400 2400
(1 kHz, 1.0% THD)


Its the filter I dont get. Plently of power, is it possible to make this play say 75hz and lower?

 

[GMK88]

im feeding it 1400 rms at 4ohm load but I am getting some high frequency in there.

 

[lovinthehd]

Looking at the QSC's description at P-E it seems you need an accessory for dsp/eq: Outputs feature covered barrier strip connectors for safety agency compliance, and for added versatility, a DataPort V2 (Version 2) terminated with an HD-15 connector is provided for use with DPV2-compatible signal processing accessories such as the XC-3 Crossover, SF-3 Subwoofer Filter, LF-3 Low Frequency Filter and the DSP-3 with external power supply. Looking through the manual confirms no built in crossover, just the low freq filter settings of 50 and 75 hz.

The Peavey is a powered mixer....didn't know there were such things.

Is this for a commercial space or a dj job or?

 

[GMK88]

Im going to take some pics and vids of what I have setup...

This is for personal loud bass with my tunes....it actually shaked my mouse so hard I cant use my computer...

Right before clip it shakes the whole house...but I guess I need an xover? inline xover in a RCA/3pin Euro BLock connector. hopefully less than 75hz, Subs are tuned to 30.5.

Its a SHURE stereo MIC mixer...


Inputs not my problem anymore, Its the xover from the QSC to the subs.

 

[GMK88]

http://www.ebay.com/itm/2-Harrison-...-Subwoofer-Electronic-Crossover-/390911089970


Check these out!