| Author | Message | ||
     Steve Pederson (steve_pederson) Username: steve_pederson Registered: 08-2006 |
Hey all, I recently got a 110 RD50 in great shape. I plan to use it as a practice amp for bass and maybe for small clubs. When I play the bass through it I get speaker distortion/rattle at anything more than low volumes. I tightened all the screws and replaced the rattling tubes and it is still there. The orginal MM speaker was replaced with something else. Any suggstions on what to put in? I did a search and people have recommended Eminence, Celestion, and Weber for guitar. How about bass? BTW, I let the guitar player in our band use it in practice today and it was the first time he played a good sounding blues solo. I have a 210RH cabinet that sounds great with the bass when driven by a MM HD130. I haven't opened it up to see what speakers are in it, but I suppose that would be a good start. I had the opportunity to use this combo outdoors a few times this year and got to turn the volume up to 7 at 1/2 power and it was amazing how it good it sounded. Very tight and strong. I may switch to using my MM 75 head instead of the HD130 so I can turn it up. Thanks, Steve | ||
| Steve Kennedy (admin) Username: admin Registered: 03-2002 |
If you want a heavy-duty indestructable but reasonably priced speaker to handle bass, check out the Eminence Delta. I have the Deltas with the 56oz. magnets and they can kick some serious butt! I cannot say if they would be efficient enough for use with only 50 watts but it should work fine as a practice amp. Steve | ||
| Steve Pederson (steve_pederson) Username: steve_pederson Registered: 08-2006 |
Thanks for the info Steve. I contacted Ted Weber and ordered a Weber California with a 60 oz. ceramic magnet, bass cone and paper dome. It's rated at 80 watts. They have a 10% off sale and it was a good price to start with. I'll have it in a couple of days and will let you know how it sounds. | ||
| Steve Pederson (steve_pederson) Username: steve_pederson Registered: 08-2006 |
I put in the Weber California and it sounds great! Very impressive. The amp weighs about twice as much now with that bad boy. I am considering replacing the speakers in the 210RH with the Webers. I should have thought about this before, but with the big magnet taking up so much space the reverb tank doesn't fit inside the cabinet. It's not a big deal since I've never used reverb with the bass, but I still might build an outboard cabinet for it to protect it if I decide to use it. I still get some buzz from the cabinet at slightly high volumes. I plugged my 115RH in to the speaker output and there was no buzz so it's not amp overdrive. I've already tightened all of the visible screws. I'll have to open it up and see if there are any lose parts in the chassis. I found a comb in the cabinet the first time I went through it. The tubes are loose so I should retension the sockets. I've heard this mentioned in other posts but I'm not sure how to do it. I'll do a search to see if that info is already on the message board. | ||
| Steve Kennedy (admin) Username: admin Registered: 03-2002 |
Nice to hear that the Weber California speakers sound good! Does Ted make a bad speaker? First, you need to remove the chassis from the cabinet. Next, discharge the B+ power supply (high voltage) and make sure the amp is DEAD before your go poking around the tube sockets! You need a jeweler's screwdriver or a small punch or pointed soldering tool to do the retensioning. Take the tubes out of their sockets and look at the each pin receptacle in the socket under a magnifying glass. You can see that each pin receptacle is a thin piece of metal that is rolled into a tube to accept the pin. There is a seam in this tube that grows wider over time and temperature and the pin receptacles becomes loose. Simply prod and poke at both ends of each pin receptacle in order to tighten up that seam. When you are done, spray each pin receptacle with DeOxit 5 and work the tubes gently back into the now-tight sockets. Steve | ||
| Steve Pederson (steve_pederson) Username: steve_pederson Registered: 08-2006 |
Thanks Steve. How do I discharge the power supply? If it sits unplugged for a week, will that do it? I'll be careful. Really. I tried driving a 210RH cabinet with this amp and it sounds awesome. Now I'll be looking for a 110RD50 with a blow speaker to make into a head. I guess the MM virus can't be stopped. | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
Not steve but the advice is free! The best thing to do is use a volt meter to check for voltage present and then use something like a 10k 1 watt resistor from the filter cap "+" side to ground. This will drain the available B+ and leave it safe. I usually suggest leaving the resistor attached while working on it so that the caps don't "remember" and self charge. It's been know to happen. Just remember to REMOVE it before you fire the mutha up! |