Hafler DH-500 Common Ground?
rmaiers
Posts: 145
Does anyone know if the Hafler DH-500 has a common ground? I am getting some SDA-2B speakers that require a common ground amp. I understand if I do a continuity check on the negative output terminals and there is continuity, it should be ok but I'm wondering if anyone knows for sure. I did put the question to Hafler but haven't got a response yet.
Post edited by rmaiers on
Comments
-
yes.SRT For Life; SDA Forever!
The SRT SEISMIC System:
Four main satellite speakers, six powered subs, two dedicated for LFE channel, two center speakers for over/under screen placement and three Control Centers. Amaze your friends, terrorize your neighbors, seize the audio bragging rights for your state. Go ahead, buy it; you only go around once. -
Gday,
I've strapped the negative terminals on my hafler dh-500 with my 1.2 TLs and have had no issues
-
Does anyone know if the Hafler DH-500 has a common ground? I am getting some SDA-2B speakers that require a common ground amp. I understand if I do a continuity check on the negative output terminals and there is continuity, it should be ok but I'm wondering if anyone knows for sure. I did put the question to Hafler but haven't got a response yet.
Hafler doesn't exist anymore do they???
cnhCurrently orbiting Bowie's Blackstar.!
Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
[sig. changed on a monthly basis as I rotate in and out of my stash] -
No.And that DH-500 amp is one nice amp.Musical concepts/musical design can repair and mod them though.SDA-2BTL with custom IC
Adcom 565 monoblocks--Monarchy Audio M-10 preamp
Theta Data Basic Transport--Stello DA100 Signature DAC--Camelot Dragon Pro2 MK III
Harman Kardon T-55c TT
DH Labs Q-10 Signature Speaker Cables With Furez silver plated copper bananas
Revelation Audio Labs Prophecy Cryo-Silver Reference AES/EBU
Revelation Audio Labs Prophecy Cryo-Silver i2s digital cable
4 Furutech FP-314Ag with FI-11cu Plugs/FI-11AG IECs--- Power Cords
DH LABS REVELATIONS ICs-amps
Revelation Audio Labs Paradise cryo-silver ICs-Source to pre -
The DH-500 is a beast of an amp. Weighs over 50 lbs and rated at 255 watts/channel into 8 ohms. I had it checked out by a tech who is Hafler knowledgable (and who owns a Hafler) and it met or exceeded all the original specs.
Other members have suggested this amp does not put out enough "clean" power for my Polk RTA-12B speakers and that is why the 0.75 amp tweeter fuse blows when I play at high volumes for extended periods of time but I can't imagine this amp is lacking in clean power. -
Do you think the clean power has been blowing the fuses or tweeters?
Maybe it's not the amp. Could it be the source sending ugly signals thus blowing the fuses? I do know its generally the clipping of the power supply that blows fuses and or tweeters. -
I heard of a **** electrician who was caught blowing fuses.Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
Thanks
Ben -
IIRC I mentioned in your other thread it was not the lack of power blowing the fuses but too much,thus the fuse was doing exactly what it was supposed to, protect the tweeter from excessive power levels..
Other members have suggested this amp does not put out enough "clean" power for my Polk RTA-12B speakers and that is why the 0.75 amp tweeter fuse blows when I play at high volumes for extended periods of time but I can't imagine this amp is lacking in clean power.Testing
Testing
Testing -
I am thinking it could be too much power at the high volume levels. The RTA-12B are nominal 4 ohm impedence and dip below at some frequencies so the Hafler could be delivering more than the 500 watt rating for the speakers when I'm driving them hard.
-
Do you know what the 4 ohm rating for that amp is because 500 Watts does sound possible!
cnhCurrently orbiting Bowie's Blackstar.!
Polk Lsi-7s, Def Tech 8" sub, HK 3490, HK HD 990 (CDP/DAC), AKG Q701s
[sig. changed on a monthly basis as I rotate in and out of my stash] -
The spec sheet for the Hafler has a a power/ch vs impedence curve that indicates that at 4 ohms each channel produces a little over 500 watts.
-
250 wpc, 500 wpc....it doesn't matter. Clipping is clipping.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk
