First watt clone May 31, 2022 · I have a pair of First watt F7 boards, designed by me, and power supply with 12 capacitors. If you are far away and don’t want to ship the product for repair, we will assist your technician with information and parts. Aug 12, 2020 · I see First Watt will be selling the F8 amplifier. Include preamp and speakers used. We are much happier helping you solve problems so that we can be certain that it’s done properly. 7V Input impedance: 100k ohms Damping factor: 38 relative to 8 ohms Noise: <100µV unweighted, 20Hz–20kHz Power consumption: 170 watts Weight: 24 lbs. I have built 7 of the Nelson Pass DIY amplifier offerings over the years, and am thinning my collection to what works the best with my present system setup. Jan 29, 2017 · When I first requested an opportunity to write about the next new First Watt amplifier, I was candid with Nelson Pass that it was possible my Von Schweikert Audio VR-35 Deluxe loudspeakers and passive Bent Audio AVC-1 linestage might not be a good match for any First Watt amplifier. Sep 20, 2016 · Since its founding, in 1999, First Watt has developed over a dozen unusual, low-powered, but famously musical amplifiers, as well as five unique "line stage products" that include buffered passive volume controls and active crossovers. Associated Equipment May 7, 2023 · Chime in with your experiences using any number of Nelson Pass' First Watt amplifiers. I did run my DWs on a flea power AppJ tube amp and the sound was great. 25W for 8 Ohm, 40W for 4 Ohm speakers. Oct 9, 2016 · Used First Watt Clone for sale on 400+ second hand hifi sites & shops. My (very) initial impression is very positive with only basic Jul 29, 2022 · The First Watt SIT series is very different than the other/later models so everyone please be careful with generalizations re: “First Watt sound quality”. Mar 6, 2021 · While I would love to be in a position to drive across town and grab a First Watt something off the shelf, my budget (maybe $1200, give or take) dictates a more modest proposal. So far, First Watt has made a few different amplifiers: Very different amplifiers. This is the realm occupied by single Oct 21, 2020 · First Watt F6 Clone I intend to use this amp for cd listening. Oct 9, 2017 · First watt clone any good? . 0 Jun 17, 2015 · Got my clone fired up yesterday. [FONT=Arial, sans-serif] Originally created almost 6 years ago, the F8 is a stereo two-stage single-ended Class A amplifier using the NOS Toshiba 2SJ74 P channel Jfets and SemiSouth R100 SiC power Jfets for signal gain, plus IRFP240 Mosfet mu-follower current sources, for a total of three devices per channel. 1; 2; Next. Re: Nelson Pass First Watt F4 clone « Reply #40 on: 12 Jan 2009, 03:22 pm » Just curious, but would any of you guys build a pair of F4 monoblocks on commission, and how much would you charge?. This one is dual mono in a 3U Modushop chassis with old BrianGT power supply boards. 47 kOhm input, 0. Came out great and sounds magnificent!. Having built several F7 clone amplifiers using the ALF08x16 This pair of F-5 Clone circuit boards use the same circuit as the Nelson Pass / Firstwatt F-5 model. NP is a big supporter of DIY and released this schematic recently. To do this a transformer able to meet the challenge is needed. Several months later, I received a note from Nelson informing Jun 5, 2017 · For sale is a First Watt F4 clone I have personally built using the recommended signal boards from DIY audio and a generic bipolar power supply board. The main real difference I noticed was this amp had a bit more extension in the highs and wasn’t as rolled off as the SIT-3. 50 or so years ago I built a bunch of Dynaco, Heathkit, Elco, Knight. ozzy62 Details May 25, 2022 · Am using Aleph 30 Monos, M2x "transformer" and ACA "pure class A" Pass designs. The SIT-4 is the First Watt power amplifier using the industrial grade Static Induction Transistors. Mar 27, 2016 · First Watt Clone - The DIY M2 is a class A amp that follows Nelson Pass's design and tries to clone his work. will mail you on request. The completed tested and working AMP: I hav I've been on a deep dive over the last couple weeks to build a pair of Nelson Pass First Watt F4 clones. Jul 19, 2020 · Deconstructing the First Watt DIY power supply - Part 2 Transform yourself! To recap part 1: A theoretical First Watt F6 amplifier with a 23V power supply that, in a worst-case scenario, will be asked to drive 100 watts into 2 ohms, requiring current of 7 amps. As I already own 2 M2s, I built this to run my center channel K402 bi-amped. 6V RMS [full output] Output impedance: (measured @ 0. 5A, 60 change the operating AC voltage, contact First Watt. Class A push-pull power amplifier with no feedback and voltage gain created through an auto-former which magnetically multiplies the input voltage. The only question is which one Aleph J? F5? M2X? So much goodness! Even better, once you spend for the chassis and power supply, you can swap amps for around two bills. Jun 26, 2021 · During Covid lock down I was looking for something to do. Each First Watt piece is a unique design and is “best” in some particular way. High-power amps, on the other hand, require multiple gain stages and lots of output devices, and in the process lose sight of that critical first watt. Feb 12, 2021 · (Although using the Amp Camp amp as an example is ridiculous, as it was designed to be a cheap DIY group learning project. Plus there is a great community to help with the build. Use Hifi Shark to monitor pricing and global availability Aug 31, 2021 · The new First Watt F8 stereo amplifier from Nelson Pass. They look alike because they all use the same basic chassis and power transformer. 0 of the boards, and it should be assembled using the F5v3 Build Guide. 25W (for 8 Ohm speakers), 40W (for 4 Ohm speakers). 2 Ohm output impedance. The clone kits and boards (aleph J, F5, F6, M2X, etc) all seem to be around 25 watts per channel and similarly priced so, how does one choose between them? Nov 6, 2023 · First Watt F4 Clone Designed by Nelson Pass. So I decided to build an amplifierI bought and built a Tubes4HiFi 60w/ch Dynaco clone "ST120". 02% @ 1 watt, 8 ohms Gain: 15dB Input sensitivity (max output): 2. I built this as the "mule" before I start swapping out the stocker parts for boutique goodies as well as develop a prettier case option. First Watt began in 1998 as a "Kitchen Table" project by Nelson to create low powered solid state amplifiers for people crazy about subjective sound quality. ) I don't believe I've ever heard any of the First Watt amps, but the Pass Labs amps were some of the best sounding amps I heard when I was shopping every weekend for three months for relatively high end gear in 2000. I had a First Watt SIT-3 at the same time as this amp and it was an extremely close comparison. Get to know some of the fine people on DIY's Pass Labs threads and you will see there the regular availability of Aleph and First Watt (clone) kits. The 25 watt per channel First Watt F8 isn't related design-wise to the Aleph 3, however, but rather the F8 is an evolutionary descendant of the 25 watt per channel First Watt J2 amplifier, which has been the most enduringly popular First Watt amplifier ever offered by Nelson. May 5, 2018 · I've built both and like Full Range I prefer the M2 over the F6 with horns. Nov 27, 2007 · First Watt F1 clone PCB's set (Amp Boards and Power Supply Boards) 2 of Amp boards (Left and Right channel) Plus one Power Supply Board 3 PCB set will cost $30 plus postage / shipping charges as per EMS, intl currier charges. It is preceded by the ground breaking SIT-1, 2, and 3 and follows their technical philosophy and construction. They all sound fine but the Aleph 30 is so far above any other amp I have ever heard that it stays on most of the time. . In contrast, First Watt designs generally don’t exceed a power output of 25Wpc into an 8-ohm load. Some questions regarding compatability. Dimensions: 17″ x 5. Class A push-pull power amplifier with no feedback and no voltage gain, only current gain. 5″ x 15″ Price: $4000. The boards are symmetrical and can accept another pair of output transistors to make it a Turbo version. Dimensions 170mm x 50mm Mounting holes UMS Heatsink Compatible Number of boards included 2 Layers 2 Board Revision 3. Board PCB Images are available, cannot post here due to size constraints. The 15 Volt toroids were initially intended to be used for a mini-aleph build, so the PS rails are only +/- 19V. The schematic is based on simulation and tips and hints from forum members, you can read in First Watt F7 review thread. This is V3. On the up side, it makes it easy for me to test ideas and compare different designs with the hardware being a fixed constant. As a preamp will be required and I like the idea of valves, would the Linear Tube Audio (LTA) MZ2 be a good match? Specifications. The sweet part of building a Firstwatt clone is that you can now just purchase the M2 boards and stuff them and replace the F6 boards for very little money. 1 Jun 26, 2021 · I am looking to the First Watt clones or Amp Camp Amp because both are well established, well liked and seem like they are potentially a great match. A few weeks ago I found and bought a First Watt F5 v2 as I always Jun 28, 2016 · That almost perforce produces an excellent first watt. Amplifiers that have low distortion and noise, and will drive a 4 ohm load. Once Again: If you have a problem, contact First Watt. Description I am currently enjoying First Watt's J2 stereo power amplifier ($4000). Jun 17, 2015 · The FIRST WATT F7 by PASS LABS is opening the door to the future of audio in the third millennium. class: Push-pull Class A, no feedback Sensitivity: 0. com. First watt clone any good? Thread starter Nursfortubes; Start date 2017-10-09 2:07 pm; Status Not open for further replies. FIRST WATT firstwatt. Jun 15, 2021 · Total harmonic distortion: 0. Jun 26, 2021 · For someone who can build one, First Watt clone all the way, anytime, night or day. Quite a few people have asked me for a regular sort of amplifier, you know the kind you plug like any other, with some voltage gain and a real damping factor. Oct 3, 2019 · First Watt M2 Clone Designed by Nelson Pass. -suds May 29, 2023 · Exceptionally built First Watt clone which from what I understand, was mainly based on the First Watt SIT (VFET) amps. awut tudxnmha psbi recqp blzyuku jpnu fep vmw wxri ytz gjfoh logk aici prlw ywb