Hafler DH-500 Amplifier for sale - diyAudio
Go Back   Home > Forums > Commercial Sector > Swap Meet

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th August 2006, 06:42 PM   #1
diyAudio Member
 
Join Date: May 2004
Location: San Francisco
Send a message via AIM to joe carrow
Default Hafler DH-500 Amplifier for sale

For sale or trade, one Hafler DH-500 amplifier.

This is very used, and was originally broken when I acquired it. It had a burned out resistor on one of the output boards, blown fuses, and a broken fuse holder. I replaced all fuses, the burned resistor, and added non-standard fuse holders. The speaker level fuses are no longer externally accessible.

This amplifer appears to be in fully working condition, as tested with my own speakers (8 ohms) at high volume.

I'm getting rid of it because I live in an apartment with my girlfriend, and I really don't need all that power. It was ugly new, and it's cosmetically flawed. She can't live with it, and I can't give it the home it deserves.

The local used sound store (The Sound Well in Berkeley, CA) is willing to give me about $150 for it, so you need to offer more than that. These things go for about $350 in good condition on Ebay, so I know I'm not getting more than that. Make me an offer, and be ready to pay for shipping on this heavy beast if you're not in the San Francisco bay area.

I would strongly prefer not to ship it, and would meet up with you near a BART stop between El Cerrito and San Francisco.

Trades I'm looking for would be something equivalent to a Panasonic SA-XR55 or SA-XR57. Other home theater receivers will be considered if they have digital input, are in good condition, and are at least 75 watts in stereo mode.

Any questions?
  Reply With Quote
Old 12th August 2006, 09:18 PM   #2
diyAudio Member
 
Join Date: May 2004
Location: San Francisco
Send a message via AIM to joe carrow
Ok, if there's no interest I think I'll loan these to my friend and his band, and see if they like the amp enough to buy it from me for their PA. Regardless, I'm getting rid of 50 pounds of copper, steel, and aluminum, and someone's getting a nice deal.
  Reply With Quote
Old 12th August 2006, 10:04 PM   #3
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
Default will pay, conditionally

1) This amp was a kit amp. Did you build it? ( or do you know who did?)

2) Does it blow its fuses ... have you ever had to replace 'em? Any other known breakages?

3) Do you have the service manual? Or original build manual with the check list? ( http://www.hafler.com/techsupport/pd...00_amp_man.pdf )

4) More details about condition: well used? in a performance venue? Garage band environment? ... or just as home sound unit. Does the fan run constantly? Does it run at all?

5) Will you take my check? ... for US$150.00 delivered in Berkeley? (Shipping is around US$30 by UPS, packaging could run another US$30.00 = it weighs a lot and packaging is important to prevent breakage in transit.)

I'm serious, but don't want to buy a kit that I have to rebuild to make right. (Your reference to US$300+ on eBay doesn't mean too much as these are not always kits, but completed amps by professionals.

FastEddy: support@firewirestuff.com in Petaluma Ca.
  Reply With Quote
Old 13th August 2006, 08:28 AM   #4
diyAudio Member
 
Join Date: May 2004
Location: San Francisco
Send a message via AIM to joe carrow
Hi FastEddy,

Thanks for the interest. Unfortunately, you're second in line after somebody who emailed me shortly after my last post. I couldn't reply sooner since I was at the Death Cab for Cutie show.

I'm responding to your questions as thoroughly as I can, and directy the first guy to come read my responses. Let me know if this scares you both off.

1) No, I did not build this amp and I have no idea who built it. It was purchased at a second-hand store for my fraternity house at RPI in New York.

3) No- but I found the PDF you linked to and used it to rescusitate the amp.

2) and 4) After the fraternity purchased it, the amp was used and abused at a couple of parties before it was damaged. The amplifier was left in some sort of fault condition after a party. The amp sat unattended all night and the next time somebody paid attention to it, it would not work. It might have been left to drive a short circuit, or it could have been overdriven with no speakers connected- I have no idea what caused the damage.

I opened it up and gave it a thorough visual inspection, and this is what I found:

Click the image to open in full size.

I tracked down what value resistor this was supposed to be, based on the schematic and parts list, and replaced it. While I was at it, I replaced ALL fuses with the recommended value fuses.

The most annoying physical damage that's still present on this amp is the external fuse holders are missing. The speaker level fuses are held inside of Radio Shack fuse holders inside the amp, since one of the external fuse holders was damaged and both fuse holder caps went missing.

The fan does run at low speed all of the time, but it is extremely quiet.

Since I repaired this amp, I had one output fuse blow once.

I'm asking for more than $150, since The Sound Well in Berkeley already offered me $150 for it. I'm asking $175 if you can pick it up at Del Norte Bart, or $200 at another BART station. If you come here, you're welcome to come have a listen to it. I've built a Modula MT speaker (still working on the second), so you should be able to get a good feel for the sound quality of the amp. I'm in an apartment, though, so we can't do much stress testing.

A personal check is fine, but I'd want to see some ID and proof of a home address.
  Reply With Quote
Old 13th August 2006, 04:29 PM   #5
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
Default thanks

... but I'll keep looking.

I don't have the time or inclination to do ongoing repairs on a device that may be problematic. I would rather build my own or buy newer technology in warranty. No offence as I would beth the '500 will serve someone else satisfactorily.
  Reply With Quote
Old 13th August 2006, 05:22 PM   #6
diyAudio Member
 
Join Date: May 2004
Location: San Francisco
Send a message via AIM to joe carrow
I'm glad we're clear on the condition of the amp. I don't want to sugar coat anything.

If anyone else is looking for a reliable workhorse to drive low impedance loads at top power for your nightclub or band practice every night, I don't really recommend this amp unless you're qualified and inclined to keep it working.

If you're looking for an amp for home/home studio use that will have clean and solid sound, tons of headroom, and the ability to handle challenging (for home) loads- then this amp is for you.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hafler DH-100 Preamplifier For Sale dtm1962 Swap Meet 2 22nd March 2009 12:18 AM
Hafler Trans Nova P3000 Amp for sale susant99 Swap Meet 0 27th December 2006 06:02 PM
For sale: Hafler DH-200 Sheahan Swap Meet 0 14th March 2006 11:08 AM
Elektor LFA 50W Amplifier PCB for sale WALTER BURKHARD Swap Meet 2 7th February 2004 07:25 PM
Hafler 500 fixer upper for sale RADIOLEE Swap Meet 2 13th January 2003 12:56 PM


New To Site? Need Help?

All times are GMT. The time now is 11:49 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2