Hafler dh 500 upgrade. The original DH-220 manual is available for reference [4].
Hafler dh 500 upgrade. A different output board is necessary for the DH-500, P230, and P500 because they employ three pairs of output transistors and have different heatsink profiles. $349. The MC-3 fits HAFLER DH-101 - kit available. Since the early boards have only one trim pot, (bias) I checked HAFLER DH-500 POWER SUPPLY UPGRADE: NIPPON CAPS, 35A RECTIFIER, 16A POWER SW. :sigh: David Hafler DH-500 Power Amplifier. While I LOVE the looks of my old vintage receivers, I don't think most will match the sound of the Hafler. Factory installation available for the HAFLER DH-101, HAFLER DH-100, DH-110. 250 TO 630V 5% OR 10% POLYPROPYLENES. Hafler (a. PA-8 Features: PA-8 sports 6 mosfets/channel (provided) >>> It’s a power upgrade with more ‘grunt’ for DH-200/220. But it does not really matter to me, others may complain, we are kinda captive in our discussions. Hafler DH200 Power Amp and matching Preamp DH101 Canuck Audio Mart CA May 15, 2018 · The Musical Concepts upgrades can replace everything except the chassis and you can get a world class amp back according to those, @dshaof, that love them. #4. C $313. 1K) 3. Go to EBAY and search hafler and you'll see a lot of parts for Haflers available from QUACO. I also have several DH-200 amps as well as a P230. June 2017. AKer FootFungus recapped my 500 with higher value main ps caps and I think Nichicons everywhere else. There are some new OPS boards in trial for those heatsinks. I've since made similar mods to my DH500 adding the MC PS500 with 8-15000uf Mundorfs plus twin 500va toroidal Jul 11, 2015 · last year I bought a haffler p 500 for 155 bucks at a hawk shop - a fancy dh 500 I tried to return it because only one channel worked - the other channel had low level distorted output. Mike (aka - Ozark Hifi Doctor) has a number of posts in the Hafler DH-200/220 Mods thread where he has covered the good results of using the Musical Concepts PA7 boards in various Hafler amps. PS-220 - Versatile dual-mono power supply. Preamps with the MC-3 board are often accused of sounding tube-like, vividly three dimensional and very dynamic while retaining a solid bass authority. Jan 14, 2020 · On the DH-500 it should be 350mA as measured on the B+ or B- rail. Looked at some mono amplifier options as well as pairing a couple of bridged stereo such as Parasound but at this point the asking price for the Hafler and in consideration Dec 23, 2010 · I have a couple of DH-500s myself and find that the best combo is a tube preamplifier. The pro version of the DH-500 is the P-505, which I never knew existed until I bought one about 6 months ago. 5K, new=22. The DH-500 is in a different league than the DH-110 that Hafler matched it with. Jan 14, 2023 · I did the Fantasia full upgrade kit on a DH-200, which essentially makes it a DH-220. The other is made by a Mojo Audio Illuminati v3>>Quantum Byte w/LMS>>Rpi/PiCoreplayer>> Starlight 7 USB >> Mojo Audio Mystique v2 SE>>ModWright SWL 9. Hafler himself became disassociated with the activities. Static Banner Advertisers can upgrade The DH-220C amplifier is designed as an upgrade to the legendary Hafler DH-220 MOSFET power amplifier. I would generally agree that it is more cost-effective to buy more CDs, better speakers, or room treatment for your listening room. 31. These are all new for us. In fact I would say it's not even broken in yet. 95 (in kit form) from stereo dealers. It was also when the brand, Hafler, was sold to Rockford/Fosgate. There is no "stock" boards (DH-200/220/280/500) from Hafler that incorporates the mods discussed in this thread (to my knowledge). Sep 24, 2016 · I've seen that upgrade kit listed at auction. I have used various generations of the Musical Concepts upgrades. Feb 3, 2020 · As for the DH-500, that is still in the works for qualification at the +/-90V supply V. A year later, the DH-500 came into May 15, 2010 · Has anyone upgraded the Hafler DH-101? I know that there are some cap upgrade kits available, and I would like to know firsthand how these modified units do in comparison to other things out there. Jan 29, 2015 #2 I know that Musical Concepts started using them for repairs and upgrades on Hafler amps several years ago Oct 30, 2020 · 3) I think they should split because DH-220C design variants is off topic of the DH-500C+ as "HaflerDh500Fan" has built his unit. Aug 7, 2016 · I have a Hafler DH 500 and DH 101 preamp. • High insulation resistance. Feb 29, 2024 · HAFLER PC-19 POLYPROPYLENE CAPACITOR UPGRADE KIT. However, DAC, amp, and preamp also influence the final result. com. hafler dh-500 dh-200 dh-220 dh-120 xl-280 power switch plus! $11. There are two kits that I have found that are available for the main boards. I also considered a wyerdforsound amp, just not sure what to think of class D A new pair--always replace a pair when there is a pair--and things are fabulous again. Brand New. Make no mistake! This is a "State of the Art" sound. and that can offer you an upgrade path for under a grand (new or used ) and I Apr 13, 2023 · I recently purchased a working DH 500 with early PC 10A driver boards. Click to expand The Hafler XL-280 and XL-600 incorporate the higher front-end voltage in their PC-40 driver board (circa 1987). Manufacturer URL: Hafler. 255 watts into 8 ohms, MOSFET design, high-current, 'dim the lights when you turn it on' kind of amp. The DH-500 is available for $749. Aug 28, 2020 · Opened my Hafler amp and in addition to the Toroid transformer upgrade, four 26,000uF caps installed. They bring the exciting improvements available to Hafler owners so B&K owners can smile anew. Jfets incorporated are genuine Toshiba 2SK170 or 2SK117 devices with IDSS closely matched. no clue how they compare Bryston would be your best bet of what you listed, I have considered one of their larger amps when I can upgrade. Nov 10, 2018 · OK, I know I've asked this before, but I've been collecting vintage receivers and lost interest in my DH-500, at least for a while. That's when Mr. I believe either is a good move for an older DH-200 but you can get more with the upgrades from Musical Concepts. The design is implemented on 2 PC boards, one as a drop-in replacement for the original circuit board and the other as a new board that consolidates all of the output stage wiring within the heat sink and under the main PCB. I would also agree that there is no need to replace the transformer in the DH-500. We sold these in a kit form too, but for the first time builder it was complex and very time consuming to install. If, however, you plan on keeping the amps long-term, it will. If you know anything about these Jfets, I need not say anything else. - Michael. All good! I plan to put it back in the rack tonight and start the burn in process. If the bias is set high or if one channel has drifted higher then the heat sink will heat up abnormally and this will cause the thermal sensors to increase the fan speed. so just a little background about caps and inductors (if you know then Apr 29, 2020 · I've recently recapped an old Hafler DH-500. It's hard to make a sonic comparison between the complete rebuild and the original tired DH-200. We no longer have to tell B&K owners to get a Hafler if they want our best of our mods. Rockford-Fosgate, or whatever, in Arizona) HAS A TON OF OUTPUT DEVICES IN STOCK FOR THE DH-500. If you go to the following webpages on www. It's available on ebay (not mine) for $78. These pcb sets are a DIY project where you assemble, install your self. Oct 28, 2024 · Used Hafler DH-200 Stereo power amplifiers for sale on 400+ second hand hifi sites & shops. com you can see the differences between the three amps: Aug 10, 2018 · Up to recently I had no interest in vintage amps over 80RMS. High input impedance, high gain, tube like presence, and eerie low noise in listening tests makes it a no brainer. I haven't used the amp much. Dec 26, 2015 · This would be the board sold on Ebay. I just cycle through so much gear. Apr 13, 2018 · Oh yea, just recently read an old review for a DH-500. with new PC board replacements are here. Special output stage pcbs were done to support the various Hafler designs, including 200,220,p220 & p230, dh-500, p500 HAFLER DH-500 POWER SUPPLY UPGRADE: NIPPON CAPS, 35A RECTIFIER, 16A POWER SW. atlvalet; Apr 13, 2024 hafler dh-500 stereo power amplifier + shipp box- bench checked, cleaned, tested hafler dh 200 ultimate audiophile upgrade kit toshiba jfet cascode topology. the hawk shop gave. Mar 25, 2024 · Even with the increase, you will find that these upgrades are a great value when you consider the increased performance & reliability of these upgraded Hafler Amplifiers. Now, I'm looking at a company on ebay to upgrade/rebuild my DH-500 and matching Hafler pre-amp. Probably a recap, and then the transistors, since I have PC10 boards. 3TL (Fully Modded)Velodyne Optimum 8 subwoofer 1KVA Dreadnought Marantz SA 8005 Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE Dec 15, 2015 · Hafler DH-500 problems I have a DH-500 purchased new that originally had PC-19 boards. Why we developed the PS-220: Previously our dual-mono mods were very labor intensive. 00 and includes these new capacitors: Electrolytic capacitors (4) - Non-polar electrolytic May 10, 2011 · I have a Adcom GFA-5500. Oct 22, 2008 · Q: Would the Musical Concepts upgrades (PA-3E Signature, for example) bring the Hafler DH-500 up to audio nearly comparable to more expensive amps (McIntosh MC252, for example) For the total investment on the Hafler and the Musical Concepts mod, I'm almost halfway to the Mac. Mar 13, 2017 · The DH107 upgrade kit Hafler issued an upgrade kit to convert Series 1 to Series 2. Mar 18, 2024 · HAFLER DH-500 ULTIMATE UPGRADE KIT. First though, I'll probably do a poly recap, and then a transistor upgrade, from kits by the same engineer/seller. 00. Replacement resistors for R18, R25, and R118, R125 (original=47. from United States Oct 30, 2020 · Hi Mark. Another option to consider is the Bob Cordell DH220C boards in your Hafler DH500. Powered it up, set the bias and DC offset. PA-8 is here! PA-8, for Hafler DH-200, DH-220, XL-280, is a physically larger PA-7 with directly mounted power mosfets. Suggested Retail Price: $3500. You might want to pm him and pick his brain. me 125 bucks back and let me keep the amp. Run (don't walk) and replace the internal signal input wires with RU-6 coax (will silence background noise) and all other amp board wires with larger guage (12-14) solid wire (all these are cheap hardware stuff and work great!). This is the input coupling ecap, not much room in there to fit a 10uF film. k. We are working on adapting the DH-220C design for use in DH-500 & P500 chassis. turns out it was a small input filter cap hidden on a board somewhere (noticed it was domed, replaced it, boom no more hum). Vintage HAFLER DH-500 Five Hundred Stereo Power Amplifier TESTED WORKS, Upgraded. Yes, a renovated Hafler DH500 with modern front-end driver boards plus beefy dual mono power supply should have plenty of muscle/current to drive pretty much any speakers. Jan 6, 2018 · 1) The brand, Hafler, vs the man, Hafler: The Transnova series was the following generation from the original Hafler DH and XL lines. Nov 21, 2008 · The stock DH-500 is a good amp, but not a superb one. I wish I could afford one of the circuit board kits sold through Musical Concepts but found a couple of other kits on eBay. It consisted of 1. Miles better than the DH-110 pre which does not do justice to this wonderful amp. Mar 3, 2015 · A lot of DH-500 owners, over at DIYAudio, have been recommending an ADCOM 100V 18000uF Computer Capacitor. Later, the company offered the powerful DH-500 power amplifier, which was suitable for both home and professional studio applications. Hafler; By Dec 15, 2015 · Hi Sly! Not familiar with the amp youre working on, im a Pro sound guy. 95. The original DH-220 manual is available for reference [4]. It adds depth and realism to the already sweet mosfet sound. Jul 10, 2024 · The original Hafler design was good, but Ed's newly designed PC-1 Driver Boards sound SO much better than the original Hafler design that you won't believe what you are hearing! Hafler DH-500 Complete High-End Audiophile Upgrade | eBay Mar 21, 2022 · I have made a handful of posts regarding possible contenders, especially on a budget and certainly the DH 500, especially with some mods, would most likely be good enough. Most of them I've upgraded with a new JFET cascode driver board kit by Quaco. Buy It Now. I would like to change the bridge rectifier. I have a pair saved, but I want to rebuild my boards 1st. One is the Musical Concepts board. Free shipping. i was repairing an arcam reciever that had a loud hum. But now I’m an owner of a set of AR-9’s that came with a Hafler DH-500 (tested at 452 watts into 4 ohm by Stereo Review. HAFLER DH-500 POWER SUPPLY UPGRADE: NIPPON CAPS, 35A RECTIFIER, 16A POWER SW. Sep 8, 2016 · Hafler DH220 Upgrade kits? Thread starter dc270; Start date Sep 8, 2016; dc270 Hafler DH 500 fan fixed! powerdoc; Jan 7, 2013; Solid State; Replies 4 Views 3K David Hafler's DH-500. 1K) 2. Before making the plunge, checking to see the basics are good. hifiengine. Used Hafler DH-500 Stereo power amplifiers for sale on 400+ second hand hifi sites & shops. Hafler 500 Upgrade. Review by dewmonster ( A ) on February 24, 2003 at 20:13:35. The sound is much improved. Anyhow, I've recapped it and changed the input to rca terminals and installed better line input cables. Looking for Hafler DH-500 technician. Description: 250 Watt/channel Dual mono All Blackgate amplifier. • High stability of capacitance and DF. #1. The AR-9’s are 4ohm) and my Vintage audio life will never be the same. Aluminum bars are thermally bonded to original heatsinks, tapped for mosfet mounting screws >>> simple NEW B&K AMP UPGRADE…. At the time it was the version 3 board. I worked on getting the speakers usable Jul 28, 2005 · Hafler DH upgrades Hi newfinish I suggest that you read this thread since the DH-500 uses the same driver board Briefly looking at the schematics for a DH 500, I Sadly due to cost constraints, Hafler used cheap 18 AWG stranded wires in the input and output signal circuits. All the upgrades do add up though. Plan is to upgrade most of the amp with Musical Concepts driver boards and power supply, etc. May 11, 2012 · I just picked up a Hafler DH-500 and am looking to do some upgrades. David Hafler has become a legend in audio circles. The two options you mentioned will seriously improve on the already good sound quality. I just need to find one now 😛. $225. Stock, it is fairly disappointing. Most of the interior of the DH-500 is devoted to its power-supply components (a massive power transformer and a pair of 20,000-microfarad filter capacitors) and to a modest amount of power-supply and out-put-circuit wiring. Hafler made his mark early on at Dynaco and took his experiences there even further a few years alter when we started Hafler Company. Let's keep problems 'read on the internet' in context, here. I can only speak for Musical Concepts since I upgraded my DH 500 with their boards and power supply caps some years ago. hafler dh220 ultimate audiophile upgrade kit toshiba jfet cascode topology . Dec 8, 2021 · This design can also be used to upgrade the Hafler DH-200, DH-500, P225, P230, and P500 amplifiers. These boards are supposed to be quite an improvement as they are more Oct 30, 2020 · 2020-10-30 5:44 pm. Jun 14, 2021 · Part 2 will detail the build procedure. Mar 10, 2013 · Mar 10, 2013. I'd like to try one eventually, on my beater DH-500. I just bought a DH 500 and I intend to mod it. Short term peak output was 792 watts into 4 Ohms. Hafler DH 500 Amplifiers user reviews : 5 out of 5 - 41 reviews - audioreview. They owe their creation to the PA-7/8 modifications. The DH-200 amplifier was the first product in the 1976 lineup and was met with critical acclaim. 95 (factory-wired) or $599. Model Picture: View. Use Hifi Shark to monitor pricing and global availability Oct 30, 2020 · Hi Mark. Maybe the posters in the DH-200/220 Mod thread can use this thread instead for these models 😀. Time to start this long over due thread. Anyone have a schematic (complete service manual) of the P225/230?, we know it uses the PC-19c pcb, so assumptions are it is the exact same as the DH-220. And while taking this troubleshooting trek I learned a few things that every DH-500 owner should know: 1. Opens in a new window or tab. . ryuuoh FFXIV Summoner. Never heard of hafler, but i am familiar with medium level amp repair. It bench tested at over 300 watts into 8 Ohms, 450 watts into 4 Ohms, and 390 watts into 2 Ohms. Been 20 yrs since I used a Hafler. Hafler upgrades. Jan 29, 2015 · Hafler DH 500 . 00 a pair. The power amp was allegedly upgraded by Trevor Lees previously, but the preamp untouched. Two 47pf caps (new C35, C135) to be added across R15 and R115 4. Sponsored. I think the amp picked up some top end clarity and better low and mid range dynamics after the mods. One is $55. I believe it's designed by a former Hafler engineer, and being sold by others, that will install the upgrades. I see that folks are wanting to build this DH-220C design project in other than Hafler chassis which is great imo. Jun 8, 2011 · Agreed with Blue Shadow's assessment: Odds are your investment to significantly upgrade the Haflers with full-blown driver boards and power supply upgrades will not provide a short-term benefit. For your Hafler DH-500/XL-600 and other larger amps we recommend the PS-500J or the PS-500 V2B. Last night I upgraded the driver boards on my Hafler DH-500 to Musical Concepts PA-6 Elite. THIS KIT CONTAINS EVERY CAPACITOR USED ON. 0 SE Signature>>Hafler DH-500 Amp+ (Musical Concepts Fully Modded)>> SRS 2. Feb 28, 2021 · First of all your amplifier is definitely worthy of upgrades as it is of very good design. I have one friend in the area that got one for his DH 220 and he loves it. It was rated conservatively at 255 watts per channel. machone Posts: 1,508. Sold in both kit and factory-wired versions the amp quickly became popular in the audiophile community due to the simple, modular design and low price, It was also very popular with bands and nightclubs due to its clarity and seemingly Apr 13, 2018 · The is a difference between the P-500 and the DH-500. a. He also performed the bypass mod. Replacement resistors for R20, R21 and R120, R121 (original=475, new=1. Laboratory Measurements i just brought the hafler dh 500 power amp and hafler 110 pre amp, the sound is mind blowing,very smooth and very detailed music the bass is very tight,it has tremendous power,rated at 255 watts per channel,even on quarter volume it is very loud and clear,over all a fantastic amp which i paid around 350 dollars in mumbai,India,worth every penny The Hafler DH-500 was rated at 255 watts per channel into 8 ohms which was unusually high for the period. it's a solid amp but there are much better options out there. We plead guilty. It's a bit unusual in that it has the pc10a version of the boards which don't quite match the manual available online. bplw meryr szm bry kzfa zor kayna ynjpct odubzyz eosj