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Little tech questions from your day

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Little tech questions from your day

Postby Lonesome Bulldog on Mon May 25, 2009 11:37 pm

For those more trivial tech room questions that don't warrant a whole thread.

I hope folks find this thread useful, I've got so much good information from the PRF. Salut!
Last edited by Lonesome Bulldog on Tue May 26, 2009 12:50 am, edited 1 time in total.
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Re: Little tech questions from your day

Postby Lonesome Bulldog on Mon May 25, 2009 11:49 pm

Guess I should kick this megajam into hyperdrive. So...

Q: is there any reason I shouldn't use RCA cables for guitar? It seems to take the signal fine, using RCA-1/4" adapters. Want to use it for an effects loop where I can't spare the multiple instrument cables. Thanks in advance, I'll take my answer off the air.
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Re: Little tech questions from your day

Postby Rodabod on Tue May 26, 2009 8:22 am

If it sounds and works ok for a bodge, then I suppose it's ok. Not something I'd do permanently.

The cable will probably have worse specs than guitar cable with respect to screening (leading to noise) and possibly capacitance, but this is less of an issue for use in an effects loop.
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Re: Little tech questions from your day

Postby endofanera on Tue May 26, 2009 9:02 am

They will break and be noisier. Spend the money on a couple short 1/4" guitar cables.
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Re: Little tech questions from your day

Postby madraso_ on Tue May 26, 2009 9:08 am

Most quality guitar cables have a conductive PVC layer around between the insulation of the lead and the shielding to help prevent microphonic noise as they move around. I would say that if it were being fixed in a pedal board then this would'nt be as much of an issue.
You can roll your own .25" cables for next to nothing and get the exact lengths you need.
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Re: Little tech questions from your day

Postby Lonesome Bulldog on Tue May 26, 2009 2:34 pm

Thanks!
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Re: Little tech questions from your day

Postby Charlie D on Tue May 26, 2009 2:42 pm

Here's something I've always wondered that I didn't think needed a whole thread:
Why is the tape loop in a Space Echo all loose and jumbled rather than sitting taut on a series of reels and such?
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Re: Little tech questions from your day

Postby tarandfeathers on Tue May 26, 2009 2:58 pm

Charlie D wrote:Here's something I've always wondered that I didn't think needed a whole thread:
Why is the tape loop in a Space Echo all loose and jumbled rather than sitting taut on a series of reels and such?


I think it's simply that the only part of the tape that needs to be under tension is the part in contact with the heads. Not keeping the whole thing taut allows a much longer loop to be stored in a smaller space, which results in tapes that last longer because each point on the tape is run over the heads less frequently than would be the case in a short loop that is tensioned all the way around.

Here's mine: the A820 and A827 have a reverse record function, but there's no second erase head on the take-up side of the record head. If you want to record something backwards, do you have to use blank tape or manually/spot erase the section to be recorded on before you start?
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Re: Little tech questions from your day

Postby SecondEdition on Tue May 26, 2009 4:16 pm

Can anyone tell me what this guitar effect is and what it's supposed to do? I know Martin Moscrop from ACR used it on the band's early (and obviously best) stuff (he told me so), but I have no idea what the thing does.
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Re: Little tech questions from your day

Postby Charlie D on Tue May 26, 2009 4:41 pm

SecondEdition wrote:Can anyone tell me what this guitar effect is and what it's supposed to do? I know Martin Moscrop from ACR used it on the band's early (and obviously best) stuff (he told me so), but I have no idea what the thing does.

From everything in those reviews, it looks to me like VCF stands for Voltage Controlled Filter, so it's probably an ASDR envelope of some sort. That would be my guess.
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Re: Little tech questions from your day

Postby SecondEdition on Tue May 26, 2009 5:08 pm

Charlie D wrote:
SecondEdition wrote:Can anyone tell me what this guitar effect is and what it's supposed to do? I know Martin Moscrop from ACR used it on the band's early (and obviously best) stuff (he told me so), but I have no idea what the thing does.

From everything in those reviews, it looks to me like VCF stands for Voltage Controlled Filter, so it's probably an ASDR envelope of some sort. That would be my guess.


So is that some kind of autowah, then?
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Re: Little tech questions from your day

Postby Charlie D on Tue May 26, 2009 5:19 pm

That would be my guess. The second reviewer at the link seems to agree.
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Re: Little tech questions from your day

Postby japmn on Tue May 26, 2009 8:50 pm

tarandfeathers wrote:Here's mine: the A820 and A827 have a reverse record function, but there's no second erase head on the take-up side of the record head. If you want to record something backwards, do you have to use blank tape or manually/spot erase the section to be recorded on before you start?


Good point! I haven't ever use the reverse function on one of those machines, we had one at school but I never thought of that.
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Re: Little tech questions from your day

Postby Kayte on Wed May 27, 2009 7:16 pm

What's y'alls favorite DPDT footswitch?


I know people used to say Carling but i donno if there's a better one now.
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Re: Little tech questions from your day

Postby zartoid on Wed May 27, 2009 7:56 pm

When the plate in a microwave oven starts spinning, how come it seems to randomly alternate the direction ?
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Re: Little tech questions from your day

Postby jpardey on Thu May 28, 2009 2:45 am

Anyone tried making a continuous time comb filter with cassette tape heads, tape, a steady motor, and a flywheel? Maybe set up a chromatic scale, and put in a low pass to get some analog Karplus-Strong pluck synthesis going on?
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Re: Little tech questions from your day

Postby SecondEdition on Thu May 28, 2009 10:28 am

Anyone know if JMF/Dean Markley Spectra heads actually exist? I see combos but no heads or cabs.
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Re: Little tech questions from your day

Postby zom-zom on Thu May 28, 2009 10:32 am

SecondEdition wrote:Anyone know if JMF/Dean Markley Spectra heads actually exist? I see combos but no heads or cabs.


I don't know if you're asking about Dean Markley heads or Spectra, but I did have a Dean Markley tube head around '85. It sounded great. Rack mount.
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Re: Little tech questions from your day

Postby SecondEdition on Thu May 28, 2009 10:40 am

zom-zom wrote:
SecondEdition wrote:Anyone know if JMF/Dean Markley Spectra heads actually exist? I see combos but no heads or cabs.


I don't know if you're asking about Dean Markley heads or Spectra, but I did have a Dean Markley tube head around '85. It sounded great. Rack mount.


I'd thought that Dean Markley had bought out the JMF Electronics Spectra amps. Was there a different company called Spectra that made amps?
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Re: Little tech questions from your day

Postby fedaykin13 on Thu May 28, 2009 10:48 am

you guys are gonna make fun of me but here it goes:

in the song "Debonair" by The Afghan Whigs.
How is the sound achieved for the second guitar?
From the beginning of the song, one guitar starts
then right before the drums start the beat
a second guitar plays a little riff that sounds like some sort of octave.
what effects are used to achieve the sound of that guitar.
I sort of like it. It's probably something really simple

I know there is a video for the song, but I just can't find it.
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