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as "Classic API."ĪPI is a registered trademark of Automated Processes Incorporated. is not affiliated with API.Ĭustomers and fans should not refer to Classic Audio Products, Inc. Hello Guest! Would you like to log yourself in? Or would you prefer to create an account?Ĭlassic Audio Products, Inc. Hopefully we will have some stock by then. The eq curves look very accurate as well in all configurations, including gain.We are taking some time off to enjoy the Christmas and New Year Holidays as well as get a few things done around CAPI headquarters! We will resume normal business activities and reactivate the checkout the morning of Wednesday January 5th. I ran several sweeps and it's perfectly flat with the eq in and set flat. The Pultec works great and is very quiet. One at the input XLR, and one at the power tranny. I think there are 3 grounds points: One at the OT lug. I ended up moving the interstage and input transformers to the left of the bottom turret board and the inductor to the right side. Legrand Wiremold 500 and 700 Series Metal Surface Raceway Switch Box, Ivory 20 32. Legrand Wiremold 500 and 700 Series Metal Surface Raceway Duplex Grounding Receptacle Kit, Ivory (1) 21 77. One particularly interesting thing is that the 6x4 rectifier runs off the same 6.3V filament as the 12ax7 and 12au7 tubes, and the power transformer rectifier 5V winding only powers the lamp. 500 series raceway capacity measures 17/32 in. This provided a nice way to route the filament wires in the upper corner of the rear of the chassis to keep things quiet as well as keeping the HT stuff away from the passive. Power Transformer: Hammond 370BX: Universal primary, 55VA, 275-0-275 DC ma 50, 5VCT 2A, 6.3VCT 2A.īuild notes: I separated the EQP-1a's amplifier section from the Pultec passive filter circuit by way of two separate turret boards. For the inductor, I chose Cinemag's Pultec replacement CML-150T. For those inclined, the original Chicago PCC-55 power tranny does appear on eBay with some frequency and modest pricing.
#Diy 500 series kits plus#
On the plus side, modern EQP-1a equivalents from Sowter have a much smaller footprint which facilitates a 2u rack chassis if desired - and the quality is artisan. As the Peerless is so exotic, I didn't really care about sourcing the input and interstage trannys because without the S-217-D, the point seemed moot. The Pultec's original Triad HS-56, HS-29 and Peerless S-217-D transformers would have been great, but sourcing them all is very difficult, primarily because of the rarity of the Peerless S-217-D output tranny. I now offer a complete Pultec EQP-1a Kit for $1645 that includes upgraded filter section capacitors, a new master layout and 500 high-resolution assembly photos.
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Built from the original Pulse Techniques Pultec schematic with the layout designed around modern replacement parts (filter caps and trannys) and utilizing best practices regarding lead dress and component placement. This is about as close as you can get to a real vintage Pultec EQP-1a. Inside Amp Section | Inside Filter Section | Inside Front Panel | Rear | Fired Up | Painted and Racked | Rack | Rack RearĪ Few Words About "Duplicating" the Pultec EQ Photo link is emailed upon receipt within 1 business day - contact me with your email address. Photo set includes component installation, amplifier assembly, completed interior, completed exterior, testing and burn-in. So, why bother with digital emulations of. New 3/27/11: Donate $10 via PayPal and receive 85 in-depth photos of my recent build of a matched pair of Pultec EQs. We are analogvibes and well enable you to create the legendary vintage studio gear youve always dreamed of.
#Diy 500 series kits manual#
Ambience Reverb.ĭIY Pultec EQP-1a Layout | DIY Pultec EQP-1a Schematic | EQP-1a Filter Schematic | Parts List (XLS) (Updated 10/2013) | Pultec Manual (PDF) LHI, which makes carbon fiber drone frames, offers this ready-to-build kit on its website for 112.16. These are compatible with both N and P channel variations, and are also capable of driving other amps that are planned to be released in the future by Mark and Nelson. The kits are MADE-IN-USA and are available with different tire sizes and wheels depending on the kit you choose. We now have a limited stock of complete parts kits for all four of Mark Johnsons VFET front ends. Go Kart Kits Easy to Build with step by step instructions Cart Carts Karts Gocart Gokart Gokarts Azusa Vintage No special tools required and No Welding. AKG TLII->Redd.47->EQP-1A (20cps -4, 10-12k+7/Broad). Mark Johnsons DIY Sony VFET front ends now available.
#Diy 500 series kits zip file#
I've just completed this matched pair of EQP-1As for a client in Texas and have made available a zip file containing 85 new photos below.įeel free to contact me if you're interested in completed, point-to-point hand-wired EQs as shown here. DIY Pulse Techniques Pultec EQP-1A Program EqualizerĬontact us for Pultec EQP-1a Kit Availability