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FDP Forum / Miscellaneous and Non-Fender Topics / PA system for Music Room

Previous 20 Messages  
Tony Wright
Contributing Member
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Stillwater, OK

I never met a calorie I didn't like.
Aug 26th, 2017 11:09 AM   Edit   Profile  

Two 8 Ohm speakers wired in Parallel connections equals ONE 4 Ohm load and you are thus pulling 100% of the potential volume from your XM-4 amplifier.

Two 8 Ohm speakers wired in Series connections equals ONE 16 Ohm load, but the volume is lessened since you are not getting the full output capability of the amplifier in the XM-4.

There are not very many 16 Ohm PA cabinets still on the market. Fender/Sunn and even Peavey had a few in the 1990s and early 2000's. You could connect all four 16 Ohm speakers in Parallel and have one 4 Ohm load and thus pull 100% of the power of the XM-4 out of the amplifier, however...that power will be equally divided between all four speakers.

Regarding the "Mixer Out" on any powered mixer is an Unpowered signal output from the mixer that you could run to a "POWERED SPEAKDER" or "to a power amp and passive speaker". Since the Mixer Out does not send a powered signal out, Line Level signal cable (guitar patch or XLR with a 1/4 adapter on the Mixer Out). Using a standard guitar patch "could" (will) allow external noise into the signal path...that whine you hear from the amp on stage at the club when the bartender is using the blender...60 cycle hum...all of that is external noise. So using a "gender bender" adapter from 1/4 T/S to a male XLR and then connect standard mic XLR cable as needed to reach a powered speaker or a power amp and a passive speaker.

As I recall, the "center off" and "left on-right on" was an attempt to provide the owner with a way to change the ground of the amplifier...but that has been a long time since I used one of the XM-4.

As for your speaker issue...My advice is to buy two 8 Ohm speakers that YOU like and that are in your budget, plug each one into one of the speaker output jacks on the back of the XM-4 and use 14 gauge or 16 gauge speaker cabinet. 16 gauge is adequate for most powered mixers. 14 gauge is better for power amps over 350 to 500 Watts per channel.

IF IT WERE ME...I would buy 8 Ohm MONITOR SPEAKERS.

Set the speakers on the floor so the angle sends the sound more or less towards the performer's ears. BE SURE that you do not point the monitors towards the input side of any microphone. "Mic to speaker placement" is the largest cause of feedback. One of the other major causes is "reflected sound". Sound can and will "bounce around" when hitting hard surfaces such as glass or ceramic or metal and even hardwood.

Sorry if I am telling you things you already know. Just the standard disclaimers and advice...

BlondeStrat
Contributing Member
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*****

Las Vegas NV

Can't complain but sometimes I still do
Aug 26th, 2017 11:51 AM   Edit   Profile  

Thanks Tony. Some of what you mentioned I did read in the (PDF) manual, but that's fine. I need all the guidance I can get on this stuff. :)

I can easily do the speakers on the floor out front and hopefully solve some issues. They would not be pointed at the business end of the microphones and on the floor I don't need speaker stands. :)

You are correct regarding the double *on* positions of the switch.

I saw a pair of 12" 8 ohm Yamaha monitor speakers on Craig's list that would work out nicely I think ... Sadly I'm monetarily tied up in my 67 Camaro and don't have the requisite $300.00 at hand. :(

Thanks again Tony, I appreciate all your effort to help me with this.

Now I'll need to get organized on the recording aspect of things. ;)

Tony Wright
Contributing Member
****

Stillwater, OK

I never met a calorie I didn't like.
Aug 26th, 2017 01:49 PM   Edit   Profile  

Well, if it would help...

I suppose I could trade one of my Mackie ProFX12 mixers and my four Yamaha DBR10 speakers along with the necessary IEC electric connections and I would even throw in four 20 to 30 ft XLR mic cables to connect to the powered DBR10...

Even trade for your Peavey XM-4...
...AND the 67 Camaro in running condition so I could drive it back to Oklahoma.

EDIT TO ADD:

"...running condition so I could drive it back to Oklahoma" implies completely street legal and all that kind of stuff...

(This message was last edited by Tony Wright at 03:50 PM, Aug 26th, 2017)

BlondeStrat
Contributing Member
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*****

Las Vegas NV

Can't complain but sometimes I still do
Aug 26th, 2017 04:15 PM   Edit   Profile  

Well Tony, this is not to say I accept your trade offer ... But the Camaro is very mechanically sound and certainly would make the trip to Oklahoma without a hitch.

At the moment it's just minus the windshield I had to removed to do some repairs. And it needs some interior which I also have. :)

Tony Wright
Contributing Member
****

Stillwater, OK

I never met a calorie I didn't like.
Aug 26th, 2017 10:09 PM   Edit   Profile  

I have no business driving a 67 Camaro anyway.

With my arthritis, even if I could stoop over enough to get in, I could not get out. So no hard feelings...

Glad you got the Music Room PA worked out.



picnic
Contributing Member
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********

NJ/FLA

I like guitars and amps
Aug 27th, 2017 07:20 AM   Edit   Profile  

I've put a decent, reliable PA together over the years with craigslist and flea markets buys. Mackie 808S powered mixer, 1200 watts, 8 channels and goes down to 2 ohms. Yamaha mains S115 Club series and 4 Yamaha 12" two way monitors.

We used it again last week for a picnic grounds gig. Easy to assemble and sounded fine.

Some events bring in pro sound. The digital, wireless ipad controlled PA's are amazing, but way over my pay grade.

At yesterday's event the band used the Bose stick as its sidefill. FOH was some noname speakers and there was a rack and mixer on the stage. Sounded great to me from 100+ft away. Those Bose stick systems have an excellent dispersion. I've seen and heard them here several times. Pricey new, but they show up on CL.

Tony Wright
Contributing Member
****

Stillwater, OK

I never met a calorie I didn't like.
Aug 27th, 2017 10:32 PM   Edit   Profile  

Picnic: I used to own one of the Mackie 808...well, actually, I owned two over the years, one "M" and one "S". Since I set the power amps up like you did, mono mains and monitors...and since I owned Yamaha S115V cabinets for mains and four of the (now long out of production) CGM ARM112 monitors (kissing cousin to Yamaha 112 monitors) we (you and I) probably got very similar sounds. I think that might be THE best powered mixer I ever used.

The last Mackie 808 I owned was part of my rental inventory...I ended up renting it to a client who kept the stupid thing and took it on the road with him. I sent a pair of the passive Mackie C300z (the 1x12 passive version of the SRM450) and two of the CGM ARM112 monitors. I made a ton of money on that relationship. He kept that rig for about 7 months as I recall. He did a lot of central and south Texas clubs as a solo act. He paid me more than I paid to buy the components of that system.


picnic
Contributing Member
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NJ/FLA

I like guitars and amps
Sep 4th, 2017 08:44 AM   Edit   Profile  

Tony, No complaints or issues with the Mackie's over the years. One of the bands I was in 10 years ago had a real gear slut guitar player who loved to buy equipment. He heard my rig at a picnic grounds gig and bought the same thing.

Dan, my current band's keyboard player did the same and bought an 808S for himself.

The Yamaha line has always been reliable for me whether it was guitars, pianos, dirtbikes, speakers or motors.

BlondeStrat
Contributing Member
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Las Vegas NV

Can't complain but sometimes I still do
Mar 17th, 2019 08:00 PM   Edit   Profile  

Well folks, this thread is almost two years old.

I have accomplished a couple of things.

Per my other thread in this forum I purchased and now have my Yamaha HS8 speakers for my computer play back.

And today I purchased a pair of Peavey 12M 12' passive monitors to go with my Peavey XM4 PA amplifier.

While I do have one (cheap) microphone here that was from one of my Son's old bands, I will need to do some microphone shopping. I suppose this cheapie might due in a pinch just to test things. out.

Next up will be an interface so I can get a bit more serious about the recording aspect as a whole.

These ... I just plan to set them on the floor in front.

(This message was last edited by BlondeStrat at 10:12 PM, Mar 17th, 2019)

Mick Reid
Contributing Member
*****

Australia

American-made in Oz!!
Mar 18th, 2019 06:44 PM   Edit   Profile  

12 foot monitors! Yikes! Thems must be LOUD!!!!










Sorry...... couldn't help myself...

(This message was last edited by Mick Reid at 11:48 PM, Mar 18th, 2019)

Leftee
Contributing Member
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VA

Toxic Humility
Mar 19th, 2019 04:50 AM   Edit   Profile  

You are quite the polyp, Mick. :-P

jhawkr
Contributing Member
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Wichita, KS USA

It's all gravy from here on...
Mar 19th, 2019 06:18 AM   Edit   Profile  

"12 foot monitors! Yikes! Thems must be LOUD!!!!"


Nah, they're 'passive' monitors.



jhawkr
Contributing Member
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Wichita, KS USA

It's all gravy from here on...
Mar 19th, 2019 06:21 AM   Edit   Profile  

By the way, in the interest of total overkill, I have a Mackie ProFx 16 with a two amps and 2 EV 12" monitors in my basement. 'Just in case', you know!

Mick Reid
Contributing Member
*****

Australia

American-made in Oz!!
Mar 19th, 2019 04:07 PM   Edit   Profile  

Great cross post Leftee!

I should have know that one would come back to bite me in the backside!!!

8^b


Leftee
Contributing Member
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VA

Toxic Humility
Mar 19th, 2019 04:59 PM   Edit   Profile  

Better a bite on the backside than a polyp up...

walshb
Contributing Member
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**********

Manchester, TN

Ask me how I know!?
Mar 19th, 2019 07:36 PM   Edit   Profile  

Another Mackie 808S user here. I love this thing, it sat unused for many many years. I finally had a need for it again, and everything still works great, no noisy knobs, sliders, nothing. Still works like brand new.


Mick Reid
Contributing Member
*****

Australia

American-made in Oz!!
Mar 19th, 2019 07:53 PM   Edit   Profile  

Thanks for pulling this thread back on topic walshb.

Signed,
Mick & Leftee


Leftee
Contributing Member
**********
**********
**********
**********

VA

Toxic Humility
Mar 19th, 2019 08:02 PM   Edit   Profile  

Aka - the knuckleheads.

Mick Reid
Contributing Member
*****

Australia

American-made in Oz!!
Mar 19th, 2019 08:03 PM   Edit   Profile  

Whyyyy you... I otta...

BlondeStrat
Contributing Member
**********
**********
*******

Las Vegas NV

Can't complain but sometimes I still do
Mar 23rd, 2019 05:59 PM   Edit   Profile  

Well, the speakers arrived.

I could barely fit them both in the room. lol :P

Hey it all works fine.

I ordered a couple of mic stands.

I think I'll get some plywood and build me a stand for it. I'll build it so it can serve as a storage cabinet for when I don't want it spread out in the room as well.

Next I have my eye on something like ...

... This

Previous 20 Messages  

FDP Forum / Miscellaneous and Non-Fender Topics / PA system for Music Room




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