Lightspeed Attenuator a new passive preamp - Page 229

nicoch58 · 3rd July 2009, 01:48 PM

is not more simple use the linear alps pot with is motor and control ?

udailey · 3rd July 2009, 02:45 PM

I dont think you can balance with the Alps control. It is easy that way though. I bought the Alps kit but have yet to get it in a box. Matching is all my DIY right now. Cant wait to be done with it and build something.
Uriah

tinitus · 3rd July 2009, 03:28 PM

Nice to know we get the best possible

leo · 3rd July 2009, 04:00 PM

Heres a few pics of the modules from Paul, its housed in a small aluminum enclosure. The infra red transmitter is enclosed inside a plastic project box fed from AA batteries, keypad is made by Storm from Farnell
The remote is big and junky but does the job

The vol adjustments is nice and smooth, I keep my finger held down on the up button until the sound is audible, I then tap it until its at the required volume

The balance control is a handy feature, it seems to work well for the less than perfect matched LDR's, mine was a little off centre, a few taps on the balance sorted it nicely.

The volume and balance re-sets after power cycling

I'm really pleased with this thing, sound quality is better than any of my normal pots (Alps blue and black) and also betters my Vishay Dale Attenuator

Big thanks to George for sharing this design and also to Paul Hynes for making these cool modules available to us diyers

udailey · 3rd July 2009, 04:21 PM

Curious how long the batteries last.
Have you ran them long enough yet to know?
Uriah

tinitus · 3rd July 2009, 04:32 PM

double shaft pots

tinitus · 6th July 2009, 02:52 PM

Quote:

Originally posted by ASLHK
We will supply LDR attenuator moudule

Who are "we"?

I see a lot of AntiqueSoundLab amps on your site?

Iain McNeill · 9th July 2009, 03:58 AM

Thanks ASLHK for flagging your post.

You can describe your products in the Vendors Bazaar forum.

daredevil_kk · 9th July 2009, 03:15 PM

Hi george,

I will be building an active x-over after the lightspeed. I was wondering is the input impedance important? Any more important areas to look out for before I start my x-over?

Thanks

KK

jameshillj · 9th July 2009, 03:25 PM

Remember the string ...

It's all about impedances - What version of Lightspeed and what Xover? (Cct)

3rd July 2009, 01:48 PM	#2281
nicoch58 diyAudio Member Join Date: Oct 2004	remote control is not more simple use the linear alps pot with is motor and control ? __________________ Sic58

3rd July 2009, 02:45 PM	#2282
udailey Passive Aggressive diyAudio Member Join Date: Mar 2008	I dont think you can balance with the Alps control. It is easy that way though. I bought the Alps kit but have yet to get it in a box. Matching is all my DIY right now. Cant wait to be done with it and build something. Uriah __________________ You can purchase LDRs anytime to build a standard LDR attenuator or to build my new LDR Attenuator "A Lighter Note". Email me. diyldr@gmail.com

3rd July 2009, 04:21 PM	#2285
udailey Passive Aggressive diyAudio Member Join Date: Mar 2008	Curious how long the batteries last. Have you ran them long enough yet to know? Uriah __________________ You can purchase LDRs anytime to build a standard LDR attenuator or to build my new LDR Attenuator "A Lighter Note". Email me. diyldr@gmail.com

9th July 2009, 03:15 PM	#2289
daredevil_kk diyAudio Member Join Date: Mar 2001 Location: Singapore	input impedance for active x-over Hi george, I will be building an active x-over after the lightspeed. I was wondering is the input impedance important? Any more important areas to look out for before I start my x-over? Thanks KK __________________ CD pro=>TDA1541AS1=>Lightspeed=>ESP crossover=>Soraya CB205=>Accuton drivers

9th July 2009, 03:25 PM	#2290
jameshillj diyAudio Member Join Date: Feb 2005 Location: Melbourne, Aust	Remember the string ... It's all about impedances - What version of Lightspeed and what Xover? (Cct) __________________ ... jh


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3rd July 2009, 03:28 PM	#2283
tinitus diyAudio Moderator Join Date: Nov 2005	Nice to know we get the best possible

3rd July 2009, 04:00 PM	#2284
leo diyAudio Member Join Date: Jun 2003 Location: notts	Heres a few pics of the modules from Paul, its housed in a small aluminum enclosure. The infra red transmitter is enclosed inside a plastic project box fed from AA batteries, keypad is made by Storm from Farnell The remote is big and junky but does the job The vol adjustments is nice and smooth, I keep my finger held down on the up button until the sound is audible, I then tap it until its at the required volume The balance control is a handy feature, it seems to work well for the less than perfect matched LDR's, mine was a little off centre, a few taps on the balance sorted it nicely. The volume and balance re-sets after power cycling I'm really pleased with this thing, sound quality is better than any of my normal pots (Alps blue and black) and also betters my Vishay Dale Attenuator Big thanks to George for sharing this design and also to Paul Hynes for making these cool modules available to us diyers

9th July 2009, 03:58 AM	#2288
Iain McNeill diyAudio Moderator Join Date: Oct 2007 Location: Santa Cruz, California	Thanks ASLHK for flagging your post. You can describe your products in the Vendors Bazaar forum.

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