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I have a Crate V16 -15 watt Amp w/12"-16 ohm speaker. Can I use a 8ohm speaker instead ?? Thanks

Can I use a 8 Ohm speaker in this Amp??

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  • Music Master
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According to the manual, it needs a 16 ohm minimum load, so no, you best not use an 8 ohm speaker.

Posted on Nov 14, 2014

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Posted on Jan 02, 2017

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SOURCE: Adding speakers to Fender Passpost 500 Amp system

If you add 8 ohm speakers in parallel then you would be running the amps into a 4 ohm load ...which will overheat and possibly damage them ...... if you wire series then the amps would be loaded to 16 ohms ...which would be ok ..but you will only develop 70 % of the total output power
IE a 100watt would be down to 70 watts
much better to add some seperate powered speakers

Posted on Feb 02, 2009

  • 1137 Answers

SOURCE: looking for a schmatic for the 410 tvx 4 ohm and the 410 tvx 8ohm cabinets

Go to www.peavey.com/asstes/literature/specs/005584220_3.pdf. Apparently the 410 TVX can be used in 4ohm or ohm configurations just don't drop below 4 ohms and make sure your amp has the minimum required impedence. Hope this helps.

Posted on May 26, 2009

  • 5370 Answers

SOURCE: We have the XR

It can be bad or loose wire or cut in between the wires causing this.But to confirm this ,try connecting the first speaker to +2/-2 and connect second speaker to +1/-1 and see if both speakers are working or problem is same as before.If both speakers are working then it was loose connection some where and it sorted out.If the problem is same as before then its loose or bad wire causing this.The internal wall wiring will need replacement or will need external wire connections.--------Get this checked.This will help.Keep updated.Thanks.Helpmech.

Posted on Mar 10, 2011

  • 5603 Answers

SOURCE: I just bought an 800RB

Here is the schematic AND everything you need to know about the speakers:

http://elektrotanya.com/gallien-krueger_800rb_sm.pdf/download.html

Scroll down to "Get Manual" on the site and click on it to download. It appears that the MINIMUM impedance on the trebel upper set is 8 ohms and MINIMU on the woofer is 4 ohms at the jack in each case.

Posted on Apr 27, 2011

  • 1212 Answers

SOURCE: External Speaker hookup problem. I hooked up 2 external speakers (8 ohm, 160 watt) into my Marshall AVT 50 amp (tag on back says 4 ohm minimum). Everything worked fine, then I shut it down and now (ne

If you are competent with electronics, open it up and check the fuse(s). Especially if no lights come on. If you get voltage, then check the jacks you plugged into- they may have dirty interrupt contacts. When you plug the jack in- it opens those contacts that otherwise are closed making the circuit to the cabinet's built in speaker. Contact cleaner should clean them up if that is the issue.

While it is possible there is a power supply issue, you can see that quick with a voltmeter, it is not likely you did much more than blow a fuse.- very possible if you unplugged speakers with the amp operating..

If you think you killed it- you usually still get distorted noise.

Posted on Mar 30, 2012

Testimonial: "Thanks - I'll pass this on to the guy looking at it. I'd like to believe it's just a fuse, but I'm preparing for a blown output transformer. I'm still not sure why it blew - two 8 ohm speakers in parallel should be 4 ohms, and that's what the amp was rated for. Even when (for a short time) I had only 1 speaker hooked up, those 8 ohms would just decrease the efficiency, right, not cause the transformer to blow? Obviously, I'm trying to understand this so that it doesn't happen again! Thanks for your help!"

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I have a fender frontman 65r with a 8ohm speaker can i add another 8ohm speaker to this


http://cie-wc.edu/Series_Parallel_9_14.pdf
Not recommended.
you could add 3 more 8 ohm speakers in series / parallel wiring and keep an 8 ohm load to the amp, or
2x 4 ohm speakers in series, or
2x 16 ohm speakers in parallel

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What is the actual watts per channel @ 8-ohms and 4-ohms on the Behringer PMP3000?


Those specs would be right - I have this same board but the amp was fried by a previous owner. I pulled the amp board out and tossed it and use the mixer now to drive an external amp. Great board. This amp is rated at 1200W "peak", bridged into an 8ohm load. That would equate to about 900W RMS bridged into 8ohm or 450 per side into 4ohm loads per side. You can't daisy chain all 4 speakers....impedance would be too low. You can run two of your 8ohm speakers per side - that results in a 4ohm load per side for the amp. That would give you amp delivery of 450W per side. Your speakers are rated to handle more than that so you're fine. For the record.....you could run one speaker per side no problem....just lower power output.

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I have a guitar head stack with 2 8Ohm outputs and a 2x12 orange ppc212 slant with 16Ohm impendance. How to link by 8Ohm the two parts?


As long as the impedance of the speakers do NOT go below the rating of the amp you can connect them without worry Your amp would drive two 8 ohm speakers. Using the 16 ohm speaker it will only draw half the current and only accept half the power that one of the 8 ohm outputs can deliver.

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1 Answer

How do you switch the behringer 3000 to bridged mode,what settings do you use to get 1200 watts out of it.


Well... you probably won't like this, but here is some info: In bridged mode, a different Speakon to speaker cable is required from only the B... it is wired differently and you can only use one of the plugs. The speaker or speaker system CANNOT be less than 8 ohms in bridged mode... this precludes using speakers in parallel or multiple speakers that are less than 16 ohm impedance... such speakers are NOT commonly available as most are either 4 or 8 ohm. There is a slide switch for bridged mode on the face of the mixer. Next thing you won't like... The 1200 Watts specification is PEAK power, NOT RMS... You can get 400 watts RMS per side USING 4 ohm speakers. If you use 8 ohm speakers, each of those will get 200 watts. I use this mixer myself and ALSO repair them. The voltage swing at the outputs is about +/-60 volts MAX (peak). This is about 40 volts RMS by the time the circuit LOSSES are taken into account. Across a 4 ohm speaker you get 10 amps times the 40 volts or 400 watts. Across an 8 ohm you get 5 amps or 200 watts. The voltage rails in the switching amp are +/-70 volts DC so these are reasonable values. Bridged mode just uses both sides of the amp driven in opposite directions for higher voltage out BUT you have to use no less than a single 8 ohm speaker so there is NO advantage to bridged mode power wise. IF YOU NEED more power, use extra speakers from an additonal amp driven by the 1/4 TRS mains output jacks OR use additonal POWERED speakers driven from the same jacks. Please read my tip about the hazard regarding the SLEEVE of the cahnnel A cable when using Speakon to 1/4 plug cables being the HOT and the tip being the cold for channel A. Ground the sleeve accidentally and goodbye channel A amp...

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I question if you really mean the speakers were in series? This requires a special cable to do this. Now if you mean they were "daisy chained" like the amp went to one speaker and another cable connected that speaker to another, then you REALLY had ALL speakers in parallel electrically which would be at the 2 ohm low limit of the amp... In either case, with only 1/4 of the 150 Watts to each, the speakers should NOT have been damaged. The amp MAY have been damaged. Try each speaker individually at a REASONABLE level to test.

If you plug into the effects loop out jack,OFTEN the connection to the internal power amp is broken so you might have to arrange a special cable as a wye to go back into the power amp as well as your external amp. In any case pwere ALL interconnected amps, etc from the same power source/receptacle for system safety.

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Judging from the "10D", that most likely means 10 watts. 6.5 inch speaker, probably 8 ohms. Most amps of this nature have 8-Ohm speakers.

Their 12-watt and 15 watt amp have a 6.5". Their 20 watt amp has an 8". The 80 watt has a 12".

Hope this helps.

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Looking for a schmatic for the 410 tvx 4 ohm and the 410 tvx 8ohm cabinets


Go to www.peavey.com/asstes/literature/specs/005584220_3.pdf. Apparently the 410 TVX can be used in 4ohm or ohm configurations just don't drop below 4 ohms and make sure your amp has the minimum required impedence. Hope this helps.

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1 Answer

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If you add 8 ohm speakers in parallel then you would be running the amps into a 4 ohm load ...which will overheat and possibly damage them ...... if you wire series then the amps would be loaded to 16 ohms ...which would be ok ..but you will only develop 70 % of the total output power
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much better to add some seperate powered speakers

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