Question on my bass rig.

sykes of christ · #1 05-17-2010, 09:15 AM

I just picked up a peavey 210x118 cab, its rated at 700 rms @4ohms

I'm currently running a GK 700rb mark II, this head runs at 480w at 4 ohms and I also run it bi amp into the cab.

All i get for tone is mud, I play stoner rock/doom type music. Any suggestions you have for this amp on getting a mix of clear low end single string notes to clear chords would be appreciated.

I also have a traynor yba 200 mark I, but it needs repair. Would it be possible to get a power amp for the cab and use this head for my tone? If so what kind of a power head would work? This head is 200 tube watts.

somegeezer · #2 05-17-2010, 09:31 AM

Try a different cab? Those heads can be dialled in to super clean or real gritty to full on mud. So maybe first, try fiddle with your settings? If that doesn't work, it must be your cab.

**B-string** · #3 05-17-2010, 09:33 AM

The 700rb II has HMS (Horn Management System), it is not really a biamp system. The horn amp is 50 watts at 8ohms, 75 watts at 4 ohms and crosses over at 5KHz. If the sound is muddy then the 10"s are probably are not working. That amp is anything but muddy, your trouble is in the cab.

BTW the horn amp is only available through the 2+,2- connection on the speakon connector and should NEVER be tied in any way to the woofer amp unless you like smoke and no sound.

wetzelman1 · #4 05-17-2010, 09:55 AM

I had that Peavey 1820. Unfortunately, that cab definitely didn't work for me. Tons of low mud and it would fart out at any kind of substantial volume. Your cab is definitely to blame. I'd look for a different cab if possible, 18 and 2x10's seems like a good choice, but the cab just doesn't sound good. I rocked an Ampeg 1540 (1x15 and 4x10 fridge) and now have an 810. The 1540 was just way too much boom. 10" speakers seem to be the most accurate size for drivers, letting you dictate sound by your amp settings and not being limited by your speakers.

If getting a new cab is out of the question, try adding some more egg carton foam to the 1820. I was looking into remedying that cab and this is what some people suggested. Didn't get to try it out myself but it's worth a shot for a few extra bucks.

sykes of christ · #5 05-17-2010, 09:56 AM

The 18 in the cab is a new black widow, and the 2 10's are peavey scorpions.

sykes of christ · #6 05-17-2010, 09:58 AM

Where would I add the Foam?

**IvanMike** · #7 05-17-2010, 10:15 AM

try losing the biamp feature - run the amp full range into the cab. those weren't the brightest cabs on the planet, but they weren't muddy either.

BassmanPaul · #8 05-17-2010, 10:24 AM

You can't use a tube amp as a pre-amp only. It has to have a load connected to it in operation. I have played through one of those cabinets and thought it was terrible for my goals.

IvanMike's suggestion is a good one. Bi-amping into that cabinet will leave a hole in the frequency range.

Paul

wetzelman1 · #9 05-17-2010, 10:44 AM

Quote:

Originally Posted by sykes of christ

Where would I add the Foam?

I saw someone who lined the surfaces of the cab in an extra layer off egg crate foam and then filled the top section with batting behind the drivers. Supposedly helps smooth out the frequency response.

and definitely run that thing full range.

sykes of christ · #10 05-17-2010, 12:49 PM

I'll try it out at practice tonight, thanks for the suggestions.

sykes of christ · #11 05-17-2010, 01:52 PM

So line the inside of the cab? What is batting?

sykes of christ · #12 05-17-2010, 10:12 PM

I ran it tonight, and It was way better. Thanks for the advice.

**IvanMike** · #13 05-17-2010, 11:04 PM

Quote:

Originally Posted by sykes of christ

I ran it tonight, and It was way better. Thanks for the advice.

another case solved! i am Dr House!

BTW, batting is the stuff they put inside the cabinet that looks an awful lot like insulation. Generally tends to reduce high mids reflecting all over the place. You don't need to mess with the cab though. just run it full range.