Search found 9 matches

by Dr.Obscure
Wed Jan 28, 2015 7:29 am
Forum: Up For Grabs
Topic: Tek 465B needs TLC and a good home
Replies: 3
Views: 2589

Re: Tek 465B needs TLC and a good home

Hi Kurt..
Sorry I missed the reply.. sigh...
Anyway, yes I can pick it up next month when I will be over you direction....
Please email me directly : chane 'at' carrollsweb.com

Thanks, and sorry again for the delayed response here.. :D
by Dr.Obscure
Sat Dec 06, 2014 9:13 am
Forum: Up For Grabs
Topic: Tek 465B needs TLC and a good home
Replies: 3
Views: 2589

Re: Tek 465B needs TLC and a good home

Hi Kurt..

Still got it?
I may be able to have it picked up and save the shipping, and intensive repack by you :)
--chane
by Dr.Obscure
Sat Dec 06, 2014 9:08 am
Forum: General Discussion
Topic: Some help with guitar active controls OpAmp circuit
Replies: 5
Views: 3639

Re: Some help with guitar active controls OpAmp circuit

Steve happy to report the issue has been resolved... To answer your queries, yes it was happening regardless of control settings, or which set of pickups was engaged, etc.. was all very perplexing.. Anyway, in the process of setting things up on the test bench, I used a signal generator (so I wouldn...
by Dr.Obscure
Thu Dec 04, 2014 7:22 pm
Forum: General Discussion
Topic: Some help with guitar active controls OpAmp circuit
Replies: 5
Views: 3639

Re: Some help with guitar active controls OpAmp circuit

Thanks for the reply Steve... The batteries are new, and verified.. the circuit works ok with low input, but cuts out a the 1v pp area... If it was clipping would I expect to hear serious distortion, as opposed to a complete fade/loss of output? I'll throw the guitar back up on the bench tomorrow an...
by Dr.Obscure
Wed Dec 03, 2014 8:38 pm
Forum: General Discussion
Topic: Some help with guitar active controls OpAmp circuit
Replies: 5
Views: 3639

Some help with guitar active controls OpAmp circuit

Just finished the active controls guitar build project in the October issue (HotRod your electric guitar...), and have been experiencing some problems... It seems to work ok in general, but when the guitar strings are played hard/loud,, the circuit output fades as if over driven and 'squelched', ret...
by Dr.Obscure
Tue Dec 02, 2014 7:22 pm
Forum: Nuts & Volts Magazine Discussions
Topic: Hot Rod Your Guitar with Active Tone Controls -- boards?
Replies: 1
Views: 3967

Re: Hot Rod Your Guitar with Active Tone Controls -- boards?

Was able to get all neatly laid out on a small RatShack perf board, so its all good.. and done :)
by Dr.Obscure
Tue Dec 02, 2014 7:21 pm
Forum: Nuts & Volts Magazine Discussions
Topic: Hot Rod Your Guitar with Active Tone Controls. October 2014.
Replies: 2
Views: 4499

Re: Hot Rod Your Guitar with Active Tone Controls. October 2

So, did you get your board built and installed? I got one done using perf board.. However, the amp fades & cuts out when he guitar is played hard, and I'm seeing +/- 1v coming from them.. so thinking the opamp is being overdriven.. probably going to install a resistor in series or a voltage splitter...
by Dr.Obscure
Tue Nov 04, 2014 12:28 pm
Forum: Nuts & Volts Magazine Discussions
Topic: Hot Rod Your Guitar with Active Tone Controls -- boards?
Replies: 1
Views: 3967

Hot Rod Your Guitar with Active Tone Controls -- boards?

Hi all.. I know the board is rather simple, but due to space requirements I woulds like to use a PCB instead of perf board, my second option.. as I don't have any goodies left to make my own anymore.. sigh.. Did anyone make boards for this project, and would like to sell me one or two .. :) ?? thank...
by Dr.Obscure
Sat Nov 01, 2014 9:12 am
Forum: Nuts & Volts Magazine Discussions
Topic: Hot Rod Your Guitar with Active Tone Controls. October 2014.
Replies: 2
Views: 4499

Re: Hot Rod Your Guitar with Active Tone Controls. October 2

It appears to be be basically correct, assuming all notations in the article are correct. However you still need to get the connection from pins 2 & 6 to circuit ground.. again possibly right at the connector itself, as long as it gets back to the board too..