Sub Sonic Posted December 9, 2017 Share Posted December 9, 2017 9 hours ago, planet10 said: Nice to see you back on deck Dave... hope u are travelling ok! Matt. Link to comment Share on other sites More sharing options...
DQ828 Posted December 9, 2017 Share Posted December 9, 2017 (edited) Thank you Edited December 9, 2017 by DQ828 Link to comment Share on other sites More sharing options...
mwhouston Posted December 10, 2017 Share Posted December 10, 2017 (edited) Assembled but not wired. The PS section and output section have been pre-assembled and mounted underneath. Those who have been to my blog or own a copy of "Amp Book" know I don't always go for a traditional black top plate. This time I thought it would work well against the blond base. These RCA 6AS7s have been listed for over $100 each. I have four I bought years ago for a lot less. Genelex Gold Lion Gold E88CC pin up front and Alps pot. Edited December 10, 2017 by mwhouston 2 Link to comment Share on other sites More sharing options...
DQ828 Posted December 10, 2017 Share Posted December 10, 2017 Looks good, do we get to look inside when it's done Link to comment Share on other sites More sharing options...
mwhouston Posted December 10, 2017 Share Posted December 10, 2017 4 minutes ago, DQ828 said: Looks good, do we get to look inside when it's done Yes for sure. It will be a few days though. Lots to do. Link to comment Share on other sites More sharing options...
Guest Posted December 10, 2017 Share Posted December 10, 2017 6 hours ago, mwhouston said: Assembled but not wired. The PS section and output section have been pre-assembled and mounted underneath. Those who have been to my blog or own a copy of "Amp Book" know I don't always go for a traditional black top plate. This time I thought it would work well against the blond base. These RCA 6AS7s have been listed for over $100 each. I have four I bought years ago for a lot less. Genelex Gold Lion Gold E88CC pin up front and Alps pot. The black top panel looks nice, there should be more of that brass badge pops on it Link to comment Share on other sites More sharing options...
mwhouston Posted December 10, 2017 Share Posted December 10, 2017 41 minutes ago, 125dBmonster said: The black top panel looks nice, there should be more of that brass badge pops on it Mate, thanks for your nice comment. The last one was a commission job. This one is for me but I'll put it up for sale once I'm happy it's all sorted. Have another in the wings. Link to comment Share on other sites More sharing options...
mwhouston Posted December 12, 2017 Share Posted December 12, 2017 (edited) Finished the new tube HP amp - Sanctorum. Worked on the first turn on. Always pleasing. Sounds great but needs lots more hours. I promised an under the bonnet image and here is a few more. I have always rubber mounted my power trannies to stop their vibration (50Hz) from getting into the tubes. If I have big chokes, often 5H or 10H I rubber mount them too. Tonight while listening to Sanctorum I could put my finger on the power tranni and feel the vibration but on the top plate where the tubes are mounted, nothing! I always felt it was a good idea and now absolute proof. Worst thing for any tube is vibration. Not on my watch!!!! Under the bonnet, Testing and completed HP amp. Edited December 12, 2017 by mwhouston 4 Link to comment Share on other sites More sharing options...
DQ828 Posted December 13, 2017 Share Posted December 13, 2017 Thank you, looks mighty fine. Link to comment Share on other sites More sharing options...
nzlowie Posted December 14, 2017 Share Posted December 14, 2017 @125dbmonster Is that a pc passive CPU cooler I can see in the last amp build photo? If so are you using on a build? I was thinking about trying these on the 4 channel Pass ACA build I did (and don't use because it runs too hot). Link to comment Share on other sites More sharing options...
Ittaku Posted December 15, 2017 Share Posted December 15, 2017 Open baffles for my test run build on the speakers arrived today. 3 Link to comment Share on other sites More sharing options...
Upfront Posted December 15, 2017 Share Posted December 15, 2017 Open baffles for my test run build on the speakers arrived today. [emoji4] Looking good so far mate. We'll done. What drivers are you putting in them? 1 Link to comment Share on other sites More sharing options...
Ittaku Posted December 15, 2017 Share Posted December 15, 2017 (edited) 1 minute ago, Upfront said: 15 minutes ago, Ittaku said: Open baffles for my test run build on the speakers arrived today. Read more Looking good so far mate. We'll done. What drivers are you putting in them? Thanks! Full build gallery: https://imgur.com/a/QItXO Edited December 15, 2017 by Ittaku Link to comment Share on other sites More sharing options...
Upfront Posted December 15, 2017 Share Posted December 15, 2017 Cool! Get into it mate! 1 Link to comment Share on other sites More sharing options...
soundbyte Posted December 15, 2017 Share Posted December 15, 2017 @Ittaku Another flat panel system in progress, nice. Get used to not hearing the box! miniDSP for crossover the next step after the passive, or have you not thought that far ahead? I found quite an improvement going to miniDSP and using the "Soundoctor" procedure, here http://www.soundoctor.com/testcd/Soundoctor_Test_CD_v2-7-2.pdf. Look forward to your listening impressions when they are complete. 1 Link to comment Share on other sites More sharing options...
Ittaku Posted December 15, 2017 Share Posted December 15, 2017 (edited) 5 minutes ago, soundbyte said: @Ittaku Another flat panel system in progress, nice. Get used to not hearing the box! miniDSP for crossover the next step after the passive, or have you not thought that far ahead? I found quite an improvement going to miniDSP and using the "Soundoctor" procedure, here http://www.soundoctor.com/testcd/Soundoctor_Test_CD_v2-7-2.pdf. Look forward to your listening impressions when they are complete. Thanks. I actually am currently using a dpseaker dual core (built in DSP room correction) DAC and have a miniDSP which I never got to integrate (will sell it instead) as I just ordered a dspeaker x 4 which came out literally this week! I'm not going with an active crossover as I have a lovely power amp (6 of which would be absurd cost) and I spent a heck of a lot on the passive crossover which took a long time to plan out and order. Thanks for the encouragement, I love the scanspeak drivers and it was their amazing woofer that is flat to 30Hz in free air that made me decide I finally had drivers that could all work in an open baffle. Edited December 15, 2017 by Ittaku 2 Link to comment Share on other sites More sharing options...
Rob181 Posted December 15, 2017 Share Posted December 15, 2017 2 hours ago, Ittaku said: it was their amazing woofer that is flat to 30Hz in free air Now that is impressive... Link to comment Share on other sites More sharing options...
Ittaku Posted December 15, 2017 Share Posted December 15, 2017 4 minutes ago, Rob181 said: Now that is impressive... For reference: http://www.scan-speak-store.dk/en/woofer/136-32w4878t01.html Link to comment Share on other sites More sharing options...
DQ828 Posted December 15, 2017 Share Posted December 15, 2017 There expensive to Link to comment Share on other sites More sharing options...
jklow888 Posted December 16, 2017 Share Posted December 16, 2017 Picked up my OB baffles on Friday (thanks Murray !) and will be sanding and staining shortly. Anyone had experience staining Vic Ash/Tas Oak as these pieces tend to be more on the pink side ? The pic above doesn't really show up the natural tone/pinkness but I wanted to get to something like my existing speakers which in the pic below is quite accurate: 2 Link to comment Share on other sites More sharing options...
Gee Emm Posted December 16, 2017 Share Posted December 16, 2017 1 hour ago, jklow888 said: Picked up my OB baffles on Friday (thanks Murray !) and will be sanding and staining shortly. Anyone had experience staining Vic Ash/Tas Oak as these pieces tend to be more on the pink side ? G'day @jklow888 I have had good success with Wattyl 'Golden oak' stain to hide pink and bring out grain to a Teak colour. not dark. http://www.wattyl.com.au/en/find-the-right-product/wood-care/Interior/DoorsandWindowFrames/Stains/WattylCraftsmanTraditionalStain.html Link to comment Share on other sites More sharing options...
jklow888 Posted December 16, 2017 Share Posted December 16, 2017 2 hours ago, Gee Emm said: I have had good success with Wattyl 'Golden oak' stain to hide pink and bring out grain to a Teak colour. not dark. http://www.wattyl.com.au/en/find-the-right-product/wood-care/Interior/DoorsandWindowFrames/Stains/WattylCraftsmanTraditionalStain.html @Gee Emm thanks - do you happen to have any pics of before and after with the Teak outcome ? Link to comment Share on other sites More sharing options...
mloutfie Posted December 16, 2017 Share Posted December 16, 2017 On 12/12/2017 at 10:46 PM, mwhouston said: Finished the new tube HP amp - Sanctorum. Worked on the first turn on. Always pleasing. Sounds great but needs lots more hours. I promised an under the bonnet image and here is a few more. I have always rubber mounted my power trannies to stop their vibration (50Hz) from getting into the tubes. If I have big chokes, often 5H or 10H I rubber mount them too. Tonight while listening to Sanctorum I could put my finger on the power tranni and feel the vibration but on the top plate where the tubes are mounted, nothing! I always felt it was a good idea and now absolute proof. Worst thing for any tube is vibration. Not on my watch!!!! Under the bonnet, Testing and completed HP amp. What amp is that? Reminded me of a bottlehead crack 1 Link to comment Share on other sites More sharing options...
swervyn Posted December 16, 2017 Share Posted December 16, 2017 15 hours ago, jklow888 said: Picked up my OB baffles on Friday (thanks Murray !) and will be sanding and staining shortly. Anyone had experience staining Vic Ash/Tas Oak as these pieces tend to be more on the pink side ? The pic above doesn't really show up the natural tone/pinkness but I wanted to get to something like my existing speakers which in the pic below is quite accurate: Staining can be tricky if you haven't done it before, the same colour stain will look different on different timber species Go to a paint store with a sample of timber, some will have boards of different timber already made up with different stain colours on it You may need to thin the colour you choose to get the right shade you want (measure samples accurately and then make up enough to do the whole job!) Remember the finished colour will be like the stain when it goes on wet, not after it has dried. Assuming it will be lacquered after staining. Slop it on with a brush over the whole piece, rub in and wipe off with a rag. Don't do little bits at a time or you end up with overlapping double coats and an uneven finish. Wear disposable rubber gloves! 1 Link to comment Share on other sites More sharing options...
Ittaku Posted December 17, 2017 Share Posted December 17, 2017 Finally listening to temporary design. Glad I only built a temporary baffle. Initially it sounded pretty bad with all the bass completely sucked out. Did some tweaking of the subwoofer crossover and experimented with more elevation since stage was all too low - not surprising since tweeter wasn't at ear height. After adding height, a fresh round of room correction DSP, and a bit of burning in it sounds unbelievable. Final design I will make the baffle 20cm taller and much more rigid, thicker and with birch, recess the drivers, slant away from the mids and tweeter and probably add side walls to the woofer component in U configuration to decrease cancellation down to lower frequencies. I'll also mount the crossover much more sturdily. Damn my crossover soldering always looks so ghetto but it does the job. I much prefer the sound of hard wiring instead of adding a circuit board. Link to full gallery of construction showing crossover etc. which looks too embarrassing to show here: https://imgur.com/a/QItXO 2 Link to comment Share on other sites More sharing options...
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