blackheart anyone?

[slimhairy]

question.... I just got into one of the 5w blackheart heads ... does anyone know if it is ok to plug in two seperate ohm boxes i have an 8om weber and a 16 om celestian both in there own boxes idk if it is ok to plug bith in??

[lessonsthatrock]

I don't know for sure, but seriously if it sounds iffy, I wouldn't even try it. I'm always a "play it safe" kinda guy when it comes to stuff I can't afford to readily replace.

[rayden44]

As a general rule of thumb you should always try for an exact match, but never put speakers with a lower ohm rating into a higher rated output. The higher speaker impedance makes your amp run cooler. I am not an electrical engineer, but this is my understanding from what I've read. Mesa actually recommend experimenting with mismatched ohm ratings but again, always have the speakers with the higher numbers.

So in my Mesa I can correctly match my 8 and 16 ohm speakers to the 4 and 8 ohm outputs respectively. The Blackheart amps might be wired differently, so were I in your shoes, I'd contact blackheart / crate and ask. They might have a list of acceptable combinations in their manuals off the website that you can download. Your mileage may vary

[pwfirst]

My audio geek guys tell me that mixing different ohm speakers is
not normally done but not dangerous as long as they are plugged into the correct ohm rating. Not sure if the Black Heart amps supports using more than one out put setting at the same time . Plugging a a 4 into an 8 is a real no no. Speakers are meant to perform under certain specks when you change the inputs the speakers performance changes and not for the better. If you have two different sets of speakers that are of different ohms you can change the ohms of a speaker, with a few capacitors or resistors or what ever the electrical guys use. You could research how to do it. I think it is an easy fix.
Most speakers are wired in a daisy chain configuration . amp plugs into speaker #1 than you connect #2 directly off of the #1 connection. Some Cabs have an in and out pug in that makes it easy. You can add your own with 1/4 plug-in. Or you can use a 1/4 Y connector. Since I am not a geek in this area take all of this with a grain of salt. There is no doubt that the more speakers you have the better they sound in a live setting. Recording does not use the same rule.

[slimhairy]

Thanks for the info..... you guys are great . I tried it for awhile it sounded great but then a buzz. so i stopped... speaker shopping time...

[rayden44]

a buzz is usually an indicator to stop depending on how the outputs are wired you could be ending up with a lower impedance than expected by the amp (bad). If they ports are in parallel, 2x 8 ohm speakers = 4 ohms. If they're in series, 2x 8 ohm speakers = 16 ohms. Again, RTFM or contact the manufacturer for advice on what's safe I've dealt with Laney, Mesa, and Line 6 about amp info and they usually have plenty of guff.

I'd post the manual off the mesa site which explains some of this stuff, but all it's managed to tell me so far is the setup Mesa tell me is an "Exact Match" actually isn't...... I'll let you know if I get unconfused as I'm sure it's just my brain not working.