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Messages - will316

#16
Tubes and Hybrids / Re: Attenuator question
January 07, 2011, 10:14:19 PM
I picked up a pot at Raduio Shack. I would imagine this does have to be used with the resistors, correct? You can't just use the pot alone, can you? I know I'm full of questions, but that's how I learn. My idea was to mount it all in one of their "project enclosures" (metal not plastic). Soon I hope to build a Lead 12 pre amp and mate it with a 50-100 watt power section. *baby steps* lol
#17
Tubes and Hybrids / Re: Attenuator question
January 07, 2011, 03:17:26 PM
By "ground" you mean to the - side of the speaker or straight to ground(side of enclosure)? I'm just trying to be sure. I know a bit about electronics but also realize I've got a bit of learning ahead of me. I also plan to look back through the archives here because this site is very informative and everybody seems very knowledgeable. Refreshing to say the least! I am a fast learner so my questions will become less and less in the future(I hope!) Anyway, once again, thank you for sharing your knowledge and answering my noob questions.(you can't learn if you don't ask.)
#18
Tubes and Hybrids / Re: Attenuator question
January 07, 2011, 12:49:07 PM
I believe I've got you. Hot lead>>larger resistor>>+ terminal on speaker. Ground lead>>smaller resistor>>- terminal on speaker. I think you can decipher that. Now is it possible to wire a pot in? Or would this be "pissing in the wind" so to speak? As far as switches a dpst should do it I'm presuming? Just can't afford to blow the amp up! If I've got the scheme correct then all I can say is: thanks! I'm looking forward to learning alot here and you my friend, are a very good teacher.
#19
Tubes and Hybrids / Re: Attenuator question
January 07, 2011, 10:20:24 AM
Blueguitar.org appears to be the site.  I got to it via a link on diystompboxes. To answer the questions-yes, it"s a valve amp. It's a crate vc508. 5 watts. single el84 power tube. I know you're laughing but I am getting complaints from family to "turn it down!" so I must quiet it down a bit. She really comes ti life when the master's cranked so I'd like to keep that tone. I'm having a bit of luck running a processor (digitech rp200a or maudio black box reloaded) in front of her and using the level control to turn it down but I really think the attenuator sounds like a better idea. I also own a Radio Shack attenuator but the impedance is too low(varies from 3ohm to 1 ohm throughout its range). I also wonder if I could wire a resistor in series with this? I'm wondering if I need a resistor just in the + wire or both + and -? Just wondering if I'm understanding resistors right or not. I understand that they convert eklectricity to heat, my question I guess is this: can I just run them in series in the + line or do I need something in the - line also?
#20
Tubes and Hybrids / Attenuator question
January 06, 2011, 11:17:12 PM
I don't recall the site I downloaded it from but there's a schematic for a low powered amp speaker attenuator. The schematic is hand drawn (if that helps anybody to remember) It shows 2 10 ohm 10 watt resistors wired in series going to a 25ohm 3watt wirewound pot. Now here's my confusion- it appears that it calls for another resistor to go over to ground? The pic is labeled 4.7 watt? (I'm not sure because it's hand drawn)I'm also confused as to how to wire the pot. Do I ground the body like on a guitar? My thinking is that the two resistors and the pot plus 2 jacks and I'm good or am I missing something here? This is my 1st project and I found this schematic to be the simplest. I have a decent understanding of electronics and circuits from my work as a hvac technician but we don't repair boards, we replace them. I'd post the schematic but I don't think my phone's capable. Thanks in advance for any help.
#21
Thank you. The link is most definitely appreciated! As far as a schematic for the Gorilla, I have been looking but can't locate one. I was kinda hoping a guy could just swap a chip or something. As far as the hi-fi, I'm gonna keep trying to figure that one out. It is very refresging to find a knowledgeable forum with helpful people. Now I need to download some schematics and get to building(hopefully)!
#22
Hi everybody. I have a few questions and any help would be appreciated. 1- Is it possible to replace the push button channel switch on my Kustom Solo 16 with a jack for a footswitch? It seems that it would be easy enough, just wondering. 2-Does anyone know how to increase gain in a Gorilla GG30? 3-Is it possible to remove the power section from a cheap home stereo to be used as a power amp for guitar? The unit is a Emerson 4000. Once again, hi and thanks for any advice/help you can spare. Looking forward to hearing from you all!