justinsweber
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Posts posted by justinsweber
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The current progress... Just ALKs crossovers which are in route!
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BTW thank you for posting the pic... I strugle to get my pic uploads to work.
I don't know if folks like all my pictures
. I usually open two windows, I open and copy on one page then place the cursor and paste on the other one. Your website made it easy.The other method I use are instructions from inmate Boxx on use of Photobucket. I have two accounts there and don't use up the Klipsch forum bite limit. Just open, copy, place and paste. This a fun forum, some other forums I use, you can't smile
or post pix. If you want I can post pix tips to your PM? So the Cornscala if set up with the official K400 and driver, that combo is about 23 inches long. Your finished cabinet has a shallow top hat, does the horn sit out back? What motor boards do you supply for all the possible combinations? You said you like pix.
A nice finish takes way longer than the actual build.
The ones in the pic are my 2 way system with an eliptrac and B&C DE85TN. I think they are 16" deep.
The ones Im building are ~24 long and will use a K401. I ordered a pair for a customer, but klipsch goofed up shipping during there where house inventory system change over. The customer went with a different horn... I called klipsch frustrated and the horns became a free gift... Klipsch has outstanding customer service... always has from my experiences. So with some free horns the PA rig idea was born.
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Never did the DBB thing. I had a wonderful bass bins I made long ago... Prob was they were 1.5" on all sides... Dave can tell you they were monsters... way too impractical.
Then I had Dave build my most enduring cornscalas... I think dave got the cabs from another forum member and then finished them with his horns. After selling off my 2way cornwalls (Still miss them) I got the bug to build my own again. As I had teamed up with Ryan Moses to start ampsandsound, we got to build bass bins... 1st for ourselves and then figuring out how to set them up such that anyone can assemble and get them square. The Bins are 3/4" Baltic Birch and are biscuited and pocket screwed... so they self align. The expectation is that a K-33E CW1526, of Kappa 15C will work great.
I assembled my pair with a buddy and a 6pack of beer in an afternoon... now Dave's plywood eplictrac and a DE85TN sit atop. I love the bass bin idea as 1... no one else is doing it; so Im not steping on toes. 2. anyone can put whatever horn they want on top and have a killer system. In the last several years we have seen such a growth of horns, eliptrac, the bi-radial, M2380, the Faital eliptrac, the PH800, and on and on. Almost any 15" will get to 800hz so there are almost infinite options. I suppose you could also use for 15 audio nirvanas or big coxials. ?
The internal detentions are 22.5x.22.5x22.5=11390 cu in = ~6.59 cu ft. ad some bracing and minus cone area... ~6.2cu ft which is perfect for the K33/Kappa 15C.
BTW thank you for posting the pic... I strugle to get my pic uploads to work.
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Those corner horns :-) looked very cool. Ill post pics of the top-hats tonight.
I had painted them and didnt like how they turned out so I did some sanding and re-rolled them.
My top-hats are K401/D250X APT-200. With crossovers in the horn sec.
If I had it to do over... Id place Dave's new tweeter and the crossovers in the bass bins and have an exposed horn up top.
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Selenium D250X is correct... sorry about that.
These are for garage speakers... I have yet to sell any flat packs... lots of interest but no sales of them yet. If after 12mo I don’t sell any... I'll write them down and keep for myself. Either way, I planned on building a pair of splits to take to the park across the street for movie night :-). (Cheap projector, a sheet, battery supply and some chip amps.)
I had a ton of spare parts.... K401 being of note and wanted them to be used... so cobbling together a spare top-hat.
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It’s still a work in progress... as most things in life are... right now its a standard darling circuit with 4 sec. power supply with 47uf per. The DC ripple is around 20mv which is 4x times what I am used to.
My production amps generally roll off the line with between 5mv and 12mv which means I can hear them... :-). I won’t be selling until I get the ripple crazy low. As I was reminded by Shannon Sparks the ratios used for the 32ohm and 600ohm taps offer much less attenuation and thus Ill need to beef up the filtering... Arg. With he noise floor lower I think it was be a wonderful amp... goes low and has very good HF ext all with the same mid range id expect.
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Its the tweeter attenuator. Allows me to fail back the tweeter. Tweeters are getting so hot that they can and do run in front of the midrange. Getting a neutral sound requires dialing in the output of each driver.
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Top to bottom pretty darn impressive. I generally perfer to the SE-84... The SE84 is an all around solution, which does many many things really well... This was per pose built to see what the hype was about. Im using nice but supper cheap Monoprice phones... They have great reviews on AK and were $30 or so... what better way to test :-).
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This is the SET DHT dream brought to phones... The mid range bloom is incredible. I love knowing the tubes are older than my father and finally being put to service... Mold on boxes and all. Having heard many a SS headphone amp I can do a brief comparison. SS is quitter though this amp is very very quite. The 1626 Tube Head phone DHT, Zero feedback has all the midrange and timbral I could want... Drive is very good with my 40ohm 100db efficient phones. I now know for sure that I like my SET amps with a hair of feedback... I may add -3db of feedback later but for now Im just enjoying the music... Back to the carpet starring at the ceiling... :-)
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ALKs new crossover for me.
I have a K401/ Selenuim D205 for mids, Eminence APt-200 for tweeter.
The new cornscalawall is set to 600hz as my Eminence Kappa 15C goes that high with ease and will make life even better for the D205 driver. My history with the APT-200 is that its incredibly hot and needed to be attenuated. 3+ years ago I went with APT12-500 and ES-5600. I love the sound of my hybrid crossovers... near time alignment and all that good stuff, but they were expensive.
The Cornscala wall gives me nearly the same flexibility at 1/2 the price... this was a serious hat trick by ALK. Having heard these in the form of cornscalawall 500/6000 I was in love... Just so musical. I couldn't afford big buck drivers for this PA rig... Id be too worried about them... and so the K401 1" driver dream was born.
ALKs crossovers actually make these mismatched parts sing in harmony.
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For most listening... I use a .75watt SET amp on my cornscalas and love it... You dont have to go big to sound great.
Re: budget.... I woudl invest all you can in getting a set of hertiage speakers... La Scala or Cornwalls can be had for 700-1200 for the pair.
Buy the emotiva A-100? (50watts stereo with vol nob). I own one, Dave owns one. They sound great and can be had for $220 new. Then save and buy a tube amp in the 1watt-60watt range of whatever you like and youll be golden. The Emotiva will give you years of dependable great sound. You will get better sound with a Tube amp but this will allow you to save. I would not sugest a diff SS amp if you are thinking about tubes. The price, build and performance is right.
If tubes... yeah I likemy own stuff... but others as well. Many of the builders here loves SET amps...but in the 1000-1500 range you can go custom amp or Dynaco clones... BOTH SUPER SOLID CHOICES and much better than buying used.
Used heritage or RF series speakers are hard to beat... go with new electronics.
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60watts will blow your ears up.
Heritage or RF series... both amazing choices.
an ST-120 with vol nob is a truly worthwhile choice... I personal would pair with cornwalls or used la scales but hey that me.
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I perfer SS pre... super freaken quite good bandwidth. Ive had tube pres and loved them, modifed PAS3, C220, my own... but if one is trying to stretch a dollar... go SS pre then tube amp.... UNLESS you are listening to alot of Heavy rock, Rap, ectronica... then reverse what I said :-)
Bob Idea is a good one. If hooking up to a CD or DAC.... will be a great combo
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I think tubes are timeless. Your speakers are insanely efficient and able to run with 5 watts without any issues. Some have said emotiva can be noisy with high efficiency speakers. The emo 300watt stereo is a great amp. I've heard it and really liked. The idea that you need big power is misleading and has alitto do with musical taste. Do you like heavy rock, rap, electricia. If so then SS is defin the right choice. If you everything else tubes will not leave you wanting. If you wanted tubes on a budget. Dynakitparts.com.The ST35 is a giant kill at 18 watts. Need more. So MKIV. The MKIII are great but the MK IV are so musical.
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Thanx for the kind words... Its funny. I was putting in place last night and hated how I had 2 sets of speaker wire run so I went to town with sticky pads and zip ties... Now I gained back some of my closet spaced. The 2nd room is a modified super simple pre (Happy to share vendor of PCB if asked). and my Dynaco ST-35 in a larger chassis paired with Dave's coxials.... (Love those speakers). The 6B4G PCB is from Shannon Sparks.... wonderful config those like all things tweaked. (I went 6B4G as I like low power SET and NOS tubes I can afford!). The 6B4G is going into 2 way cornscalas. Im in the process of building a Kenzie/darling for myself as well (.75watt output into 5k 10watt iron). On the bench this amps just sings... Im debating whether to give in and put all iron up to... added cost but many prefer. I want with monster iron as I was given it as a gift from my wife... (Feb 14 yielded 2 pair of 5K Non-UL iron). God bless the ability to pick your own gifts :-).
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Though the 6b4g is lovely it's not the fav. I am in the process of building my over specd 1626/darling/Kenzie. I actually believe .75watts is enough for daily use. My last Kenzie amp was used more often then my mc275 and this it left to a new home.
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Not sure if I posted pics. We had a few orders which meant I didn't have a base to use until we did a new batch.
Now we have African Mahogany, Sapele, and Walnut. I think Walnut mates very well with my black plinth :-).
2 chokes employed, and crazy big power supply. I didn't want to pay full bill for tubes and let my fingers do the walking with ebay. for the price of 1 pair of new tubes, I got 2 pairs of NOS tubes more than 50 years old and testing new.
Power tubes are Tungsol, driver is a Tungsol 6SU7.... very special out of my stash!!!! and a GE mil spec rectifier. Everything is measuring 140 :-). The 3watts for DHT/ SET goodness is straps to a cornscala cab with Daves sp. Ed. ply horns and ALK APT12-500 B&C DE85TN for 2way good times. Detailed but relaxed presentation.
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Im so sorry for the pain this illness is bringing. Sounds like she is a fighter which is a blessing... Im sure you just wish there was less fight to be had.
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I may be wrong... Ask Dave... He would know for sure. So much of the credit of ampsandsound goes to Dave's urging.
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Yes and no. I think Dave chose different caps for coupling. Russian PIO.
I use Wima. Aside form that differance... no.
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Thanks guys. The wood work is the efforts of partner.
I tried to embed the pics... didnt seem to work... can anyone help?
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The PCB is Shannons... but greatly changed... I’ve prob spent the most time reworking the design of this amp. I consider myself a purist... not a fan of pots on amps... Simpler the better. I’ve had to service too many amps in which no one did the requisite adjustments. Though I think the world of Chicago magnetics... I’ve moved away from their use is some cases... Having built alot of kits sourced from Triode of the years... like many... their kits (metal work is great). And the ST-35 offers the most support. I would strongly sugest you order your own parts.
Here is a bit of what we have been up to the last 2 weeks.
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You may have only recieved three calls... but beleive me, people are thinking about it my friend. The right people are giving great reviews, we're listening and you are using the right parts.
Times are a bit tough, but maybe slowly we'll come out of it someday.
Schu
Kind of you. I do think things are hard for many. I heard this interview on PBS... basically concluded that in the 90s to 2000s the middle class leveraged the income of both heads of family to send their children off to college or buy a home.
The reality of 2010s forward has been both heads of house work and that the husband typically has 2 jobs to provide the $ to maintain the middle class dream.
Id consider myself a bit more ambitious than many people I know... but I too work too much. (Trying to learn better ways to make the same $ but work less.)
About the transformers... If you didn’t own Klipsch Id say Edcor transformers are great...They are cheap by comparison, Their. GXSEs have great power handling and HF extention… but only go to 40hz. The SE-84 uses these outputs with a custom primary impedance and a lot of work with the feedback network. My Tech has those stacked cap and stacked resistor networks that helps to dial in such things.
If you want iron that does what it should and can handle big power… Hammond 1600 serious iron is wonderful without being pretentious. They are BIG… will require a braced chassis…. Problem with bracing is it Fs with how you route wires almost always. That said, Great power headroom, goes low, goes high.
Transcendar iron is generally my iron of choice. US made, natural midrange, great primary inductance, goes low, goes really high… not big. I always go for lower distortion over power when choosing primary impedances and bias tubes really conservatively.
With each of iron I use now… Ive gone to custom impedances to match the BOM of the circuits… just one more way to get a bit more out of it.
. I usually open two windows, I open and copy on one page then place the cursor and paste on the other one. Your website made it easy.
or post pix. If you want I can post pix tips to your PM? 
DIY Bass Bins instructions... Beer not included
in Technical/Restorations
Posted
here are the plans to the flat packs we have built... think they make some sense... but let us know.