low distortion sweep generator - not a PC

d1camero · 31st January 2008, 03:47 PM

Hey all, I have read various threads, searched the net and routed through eBay, and I cannot seem to find what I am looking for.

I build guitar amps and am constantly using narrow sweeps to help tune parts of the circuit. I use a PC now, but it is a royal PIA.

Does anyone make a purpose built audio sweep generator that has:

- 10Hz-20kHz
- narrow sweeps (2kHz from 1-20seconds)
- low sine distortion <.01%
- in its own little box?

thanks for the help
d1

kevinkr · 31st January 2008, 04:04 PM

Some of the older wavetek stuff might work or could be modified to suit. For this sort of application I wouldn't think low thd would be majorly important if you are just looking at filter tuning and the like.

Yvesm · 31st January 2008, 04:49 PM

I use white noise and averaged spectrum display

So you can see the effects of tweaking in "near" real time.

Beware to do not overload the Device Under Test, white noise has peaks at full level while average is about 40dB down.

Yves.

jcx · 31st January 2008, 05:16 PM

test tones can be created as .wav and stored/played on any digital player - convience is only limited by the player user interface

iPod/DAP or even a desktop CD/DVD/universal player with a remote shouldn't be too cumbersome

d1camero · 31st January 2008, 05:25 PM

Thanks folks, I will give those techniques a shot.

d1

hagtech · 31st January 2008, 09:28 PM

Tek SG505.

jh

tubelab.com · 31st January 2008, 09:33 PM

Create (or download) the tones / sweeps that you need on a PC. Save them in WAV format. Use Windows Media Player 11 to burn them to an audio CD. Use a CD player as your source.

d1camero · 31st January 2008, 09:45 PM

Hey jh, the SG505 is good for low distortion, but does not help me in the sweep category. Unless there is some option for it?

31st January 2008, 03:47 PM	#1
d1camero diyAudio Member Join Date: Nov 2006	low distortion sweep generator - not a PC Hey all, I have read various threads, searched the net and routed through eBay, and I cannot seem to find what I am looking for. I build guitar amps and am constantly using narrow sweeps to help tune parts of the circuit. I use a PC now, but it is a royal PIA. Does anyone make a purpose built audio sweep generator that has: - 10Hz-20kHz - narrow sweeps (2kHz from 1-20seconds) - low sine distortion <.01% - in its own little box? thanks for the help d1

31st January 2008, 04:04 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Some of the older wavetek stuff might work or could be modified to suit. For this sort of application I wouldn't think low thd would be majorly important if you are just looking at filter tuning and the like. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

31st January 2008, 09:33 PM	#7
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	Create (or download) the tones / sweeps that you need on a PC. Save them in WAV format. Use Windows Media Player 11 to burn them to an audio CD. Use a CD player as your source. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

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31st January 2008, 04:49 PM	#3
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	I use white noise and averaged spectrum display So you can see the effects of tweaking in "near" real time. Beware to do not overload the Device Under Test, white noise has peaks at full level while average is about 40dB down. Yves.

31st January 2008, 05:16 PM	#4
jcx diyAudio Member Join Date: Feb 2003 Location: ..	test tones can be created as .wav and stored/played on any digital player - convience is only limited by the player user interface iPod/DAP or even a desktop CD/DVD/universal player with a remote shouldn't be too cumbersome

31st January 2008, 05:25 PM	#5
d1camero diyAudio Member Join Date: Nov 2006	Thanks folks, I will give those techniques a shot. d1

31st January 2008, 09:28 PM	#6
hagtech diyAudio Member Join Date: Mar 2002 Location: Hawaii	Tek SG505. jh

31st January 2008, 09:45 PM	#8
d1camero diyAudio Member Join Date: Nov 2006	Hey jh, the SG505 is good for low distortion, but does not help me in the sweep category. Unless there is some option for it?

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