justinsweber

Thanks Dave.... The pics are of my old pair... Im going to build very similar but add a cover plate for the driver PCB and remove the AC balance. Should yield better user exp/easier to maintain without loss of performance. When do Ill bring for a road test. Now if I can pry the F5 form you.

OK... Ive rewritten my post 3 times... I hate copy paste... 1 The AC bal is for the bias to the power tubes. Shannon believes I can omit without issue. My idea is to remove the CCS and replace with a resistor... again endorsed by Shannon. Making it super simple... I bias pot, 1 set of test points. Will prob mount all components downward and get FPE to cut a plate for the PCB as a cover... Making for a cleaner look. This pair wasn't to be sold... I built a pair like this and sold off to get my Mcintosh C220... So Im kinda coming home. I really like the Poseiden PCB and the C. Chong cap board. The Cap board is tailored to fit the Triode chassis. Mr. Chong lives close, so years ago I brought him the chassis and week later we got a PCB that fits like a glove. Basics on the build are ~750 each without case. I can share sources for all parts to anyone needing. To build/sell would prob be $2100 with tubes.

all great prices

The MKiV just looks cooler. I agree the MK3 is the powerhouse. With the front end Im planing... it will be 12AX7/12BH7 Kt88. No AC val, no Silcone... all tubes/caps/and resistors. Will prob do a triode switch too. But the MKiV look cooool just old school, way less convent to hookup.

Im considering building a set of reproduction push-push amps. I’ve narrowed my choice to 2 options… Dynaco MK3 and Dyanco MKIV. The MKIII would use the new Triode chassis with IEC and PCB based power supply. Ive used it before and really liked. Front end will be DIYtube Poseidon PCB, power supply with be C.Chong. I will bypass the AC balance on the Poseidon and get ride of the silicone for the CCS thus running a more traditional setup. (Iron will be from Triode). This setup is a perfect modern version of the orig but lacks the looks of the orig in some ways. KT88 for 60watts. The MKiV will use dynakit parts chassis, Front end will be DIYtube Poseidon PCB, power supply will be a can cap as the chassis is old school classic reproduction. Same mods to the Poseidon front end. This version has all the great looks but the cord is captive, speaker connectors are old school and uses a can cap. That said… it looks retro. 40watts of 6CA7 goodness. As non of my projects have stayed with me forever… I want to know which idea seems more desirable for a resale stand point? Id love some feedback. Thank you, Justin

All of us building Shannon’s design seem to stumble onto quarks and limits/strengths of each design. Ive never asked how many PCBs he sells but I’m sure for every pic of 1 of his circuits there are 10 we don’t see. Tremendously flexible and well worth building.

Eminence Kappa Pro 15C

PM sent for crossovers. Horns and drivers for sale still

justinsweber@hotmail.com for paypal Not sure what shiping will be for the AL-3s but prob $30 if less Ill refund

The Ap12-500 is a 2nd order/2nd order network. Ive used 3x before with my cornscalas and really loved the clean sound... a bit less romantic than 1st order networks (Sorta your studio monitor with room filling sound). All unused parts K55M, K77 Sq Mag, K400, and crossovers are listed for sale now.

Everything you see here for $400 plus actual shipping. (Priced for a fast sale). If breaking them apart: Bob Crites AL-3 crossovers ($365 new, $160 for pair. Klipsch K55M pair in great condition. ($140 for the pair) Klipsch K77 sq magnet ($120 for pair) Klipsch K400 Metal horn ($100 for pair) Everything was working perfectly. I pulled the parts to build a 2 way La Scala. Justin 323-868-9722.

All the spare parts... crossovers, horns, K77/K55 will be going up for sale shortly :-)

Will the stock K33s go up that high?

Sortly after getting the new to me La Scala Splits I was suffering froma a case of listener fatigue. I decided then to try a path less traveled to convert my La Scalas to 2way with Daves BFH (Big Fing Horn) and 2" drivers. I will be saving up for some B&C 85TNs and ALK AP12-400s.