My first post

Robert1954 · 17th May 2010, 06:40 PM

Hi all,

My name is Robert and I'm happy to be a new member here.

I have decades of experience with audio - both in circuit design and loud speaker design - but have been operating in a vacuum (

) without other people to talk to and bounce ideas off of... so I'm glad to find this board.

I have a few audio systems all over my house. I'm in the process of re-doing the "main" one. Some of the electronics I have include a modified Dynaco PAS-3X, a pair of modified Dynaco Mark III's, and an un-modified Pilot SA-260 power amp. I also use solid-state electronics. Speakers are mostly home-made.

Looking forward to learning from all of you and hopefully being able to offer some useful ideas/information out to your community.

Robert

Glowbug · 17th May 2010, 06:49 PM

Welcome to the forum

We like pictures, so post 'em up

Robert1954 · 17th May 2010, 10:21 PM

OK

This is the cabinet where my electronics are housed. That's the Pilot 260 sitting on top:

This is inside. The system is tri-amped. The Pilot SA-260 drives the tweeters, the two Dynaco Mark IIIs drive the mid-ranges, and that Crown D-150A drives the woofers. Other boxes are active crossovers and some EQ for the woofers to correct for room acoustics. The pre-amp is a re-worked Dynaco PAS-3X (top removed):

One of the speakers. Two pieces. The tops have 4 tweeters and 4 midranges. The bottom has one 12" woofer:

Close-up of one of the tops. The speakers for the other channel are mirror images of these. Someday (?) I'll work on the cosmetics:

I'm in the process of re-doing the system. First, I'm going to move it all to another (much larger) room. I'm planning on designing a passive crossover for the tweeters so I can free up that Pilot amp for something else. Finally, both woofers need re-foaming and I'm having a little trouble finding the right foams. I may post elsewhere about that.

That's my baby.

Cal Weldon · 21st May 2010, 01:47 AM

Hello Robert and welcome.

planet10 · 21st May 2010, 02:16 AM

Welcome to the forum Robert. I'm sure becoming part of the online community here will bring up a whole bunch of ideas...

dave

jazzy939 · 21st May 2010, 02:38 AM

Welcome Robert!
Nice set up you have there!

kirk simone · 27th May 2010, 04:58 AM

nice work sir

17th May 2010, 06:40 PM	#1
Robert1954 diyAudio Member Join Date: May 2010	My first post Hi all, My name is Robert and I'm happy to be a new member here. I have decades of experience with audio - both in circuit design and loud speaker design - but have been operating in a vacuum ( ) without other people to talk to and bounce ideas off of... so I'm glad to find this board. I have a few audio systems all over my house. I'm in the process of re-doing the "main" one. Some of the electronics I have include a modified Dynaco PAS-3X, a pair of modified Dynaco Mark III's, and an un-modified Pilot SA-260 power amp. I also use solid-state electronics. Speakers are mostly home-made. Looking forward to learning from all of you and hopefully being able to offer some useful ideas/information out to your community. Robert

17th May 2010, 06:49 PM	#2
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	Welcome to the forum We like pictures, so post 'em up __________________ Jim J.

21st May 2010, 01:47 AM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Hello Robert and welcome. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

21st May 2010, 02:16 AM	#5
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	Welcome to the forum Robert. I'm sure becoming part of the online community here will bring up a whole bunch of ideas... dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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17th May 2010, 10:21 PM	#3
Robert1954 diyAudio Member Join Date: May 2010	OK This is the cabinet where my electronics are housed. That's the Pilot 260 sitting on top: This is inside. The system is tri-amped. The Pilot SA-260 drives the tweeters, the two Dynaco Mark IIIs drive the mid-ranges, and that Crown D-150A drives the woofers. Other boxes are active crossovers and some EQ for the woofers to correct for room acoustics. The pre-amp is a re-worked Dynaco PAS-3X (top removed): One of the speakers. Two pieces. The tops have 4 tweeters and 4 midranges. The bottom has one 12" woofer: Close-up of one of the tops. The speakers for the other channel are mirror images of these. Someday (?) I'll work on the cosmetics: I'm in the process of re-doing the system. First, I'm going to move it all to another (much larger) room. I'm planning on designing a passive crossover for the tweeters so I can free up that Pilot amp for something else. Finally, both woofers need re-foaming and I'm having a little trouble finding the right foams. I may post elsewhere about that. That's my baby.

21st May 2010, 02:38 AM	#6
jazzy939 diyAudio Member Join Date: Nov 2007	Welcome Robert! Nice set up you have there!

27th May 2010, 04:58 AM	#7
kirk simone diyAudio Member Join Date: Sep 2008 Location: cebu city,phil.	nice work sir

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