Sweet, some serious capacitance going on there. That thing is going to be a beast once you are done.
2 channel: Anthem 225 Integrated amp; Parasound Ztuner; TechnicsTT SL1350; Vincent PHO-8 phono pre; Marantz CD6005 spinner; Polk SDA2BTL's; LAT International speaker cables, ZU Mission IC's and power cables all into a PS Audio Dectet Power center.
Other; S60'S, M10 series II, M7C's, Hafler XL600 amp, RB-980BX, Parasound HCA-1500 amp , P5 preamp, all in storage. All vintage Polk have had crossover rebuilds and tweeter upgrades.
There are three things that give a man a false sense of courage, a keyboard, alcohol and a firearm.
Motorhead, 4.12.20
tonyb said " but even socialists can do a good thing here and there
Social media makes dumb people dumber and smart people dumb and dumber.
Fired it up with a variac and checked the ps output voltage, all good. Installed the driver board fuses and checked the bias, all good less than 5mv.
Put back in the rack and fired it up.
I am impressed. No noise, very musical and rock solid but very delicate at the same time. These modern capacitors are quite amazing. Definitely more tactile bass while cymbals slowly decay and recording room ambiance is enhanced. I could not be happier.
I had goosebumps with body rushes.....
I am out of town for the weekend and can't wait to get back and listen some more.
Thanks, I really want to get the XL600 freshened up. I love these big Haflers.
a side benefit to doing PS upgrades* in the XL 280s & 600s is they come from Hafler w/separate rectifiers & cap banks for each channel making the aforementioned* easier.
Samsung 60" UN60ES6100 LED
Outlaw Audio 976 Pre/Pro
Samsung BDP, Dish Rcvr, Xbox, Phillips CD chgr
Canare 14 ga - LCR tweeters inside*; CC outside
BJC 10 ga - LCR mids, inside* & out
8 ga Powerline - LR woofers, inside* & out
*soldered
LR: tri-amped RTi A7 w/Rotels. Woofers - 980BX; M&T - 981 CC: Rotel RB985 -> tri-amped CSi A6 5 Audio Pro Subs: 1 B1.39: an Evidence at each corner Surrounds: Rotel 981 -> AR 12 ga -> RTi A3 Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman Miniport 20s
To the OP: did MC provide the wire to connect to the binding posts or did you reuse? In my XL280 I found subtle & not-so-subtle improvements using better/heavier wire for the above & PS caps to driver boards.
Samsung 60" UN60ES6100 LED
Outlaw Audio 976 Pre/Pro
Samsung BDP, Dish Rcvr, Xbox, Phillips CD chgr
Canare 14 ga - LCR tweeters inside*; CC outside
BJC 10 ga - LCR mids, inside* & out
8 ga Powerline - LR woofers, inside* & out
*soldered
LR: tri-amped RTi A7 w/Rotels. Woofers - 980BX; M&T - 981 CC: Rotel RB985 -> tri-amped CSi A6 5 Audio Pro Subs: 1 B1.39: an Evidence at each corner Surrounds: Rotel 981 -> AR 12 ga -> RTi A3 Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman Miniport 20s
Really opened up with a powerful bottom end. Wrap-around 3d soundstage. I did not expect this upgrade to have such a positive impact on SQ. I am pleasantly surprised.
I replaced all of the wire running from the power supply to the driver boards and from the driver boards to the binding posts with 12 awg. Also, I replaced the 35 year old thermal paste under the MOFETs.
Well, after rewiring the power supply to driver boards, driver boards to speaker posts and replacing the thermal paste under the MOSFETS the amps mojo fell off. I had an oops o-carp moment.
250 hours later the mojo is back in spades. It took that long for everything to settle and burn in!
I've had a lot of fun and learned a lot upgrading the Hafler. Very little original except the chassis and mosfets.
I would not change a thing but I would like to try Musical Concepts new PA7 frontend someday.
Just upgraded my speakers to Acoustat 1+1s , My Musical Design D75 dies, and I'm digging out my old DH500. Had purchased many years ago PA-3b boards and dual mono transformers. Going to use the PA-3B boards , transformers, and update to the most recent MC dual mono board and Mundorf 15,000 Caps. Anxious for the parts to arrive to get started. Ordered Mundorf 1500 caps for the on board PS for the PA-3B, will have the Mundorf and a set of Blackgates for the other caps on board. Will run these for a while until I can upgrade again to PA-7s.
Comments
Other; S60'S, M10 series II, M7C's, Hafler XL600 amp, RB-980BX, Parasound HCA-1500 amp , P5 preamp, all in storage. All vintage Polk have had crossover rebuilds and tweeter upgrades.
There are three things that give a man a false sense of courage, a keyboard, alcohol and a firearm.
Motorhead, 4.12.20
tonyb said " but even socialists can do a good thing here and there
Social media makes dumb people dumber and smart people dumb and dumber.
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
Removed caps, rectifier and installed standoffs.
Board populated and tracks filled with solder.
PS installed.
Fired it up with a variac and checked the ps output voltage, all good. Installed the driver board fuses and checked the bias, all good less than 5mv.
Put back in the rack and fired it up.
I am impressed. No noise, very musical and rock solid but very delicate at the same time. These modern capacitors are quite amazing. Definitely more tactile bass while cymbals slowly decay and recording room ambiance is enhanced. I could not be happier.
I had goosebumps with body rushes.....
I am out of town for the weekend and can't wait to get back and listen some more.
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
Outlaw Audio 976 Pre/Pro
Samsung BDP, Dish Rcvr, Xbox, Phillips CD chgr
Canare 14 ga - LCR tweeters inside*; CC outside
BJC 10 ga - LCR mids, inside* & out
8 ga Powerline - LR woofers, inside* & out
*soldered
LR: tri-amped RTi A7 w/Rotels. Woofers - 980BX; M&T - 981
CC: Rotel RB985 -> tri-amped CSi A6
5 Audio Pro Subs: 1 B1.39: an Evidence at each corner
Surrounds: Rotel 981 -> AR 12 ga -> RTi A3
Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman Miniport 20s
Outlaw Audio 976 Pre/Pro
Samsung BDP, Dish Rcvr, Xbox, Phillips CD chgr
Canare 14 ga - LCR tweeters inside*; CC outside
BJC 10 ga - LCR mids, inside* & out
8 ga Powerline - LR woofers, inside* & out
*soldered
LR: tri-amped RTi A7 w/Rotels. Woofers - 980BX; M&T - 981
CC: Rotel RB985 -> tri-amped CSi A6
5 Audio Pro Subs: 1 B1.39: an Evidence at each corner
Surrounds: Rotel 981 -> AR 12 ga -> RTi A3
Power Conditioning & Distribution:
3 dedicated 20A feeds; APC H15; 4 Furman Miniport 20s
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
It's really really good.
Smooth as silk.....
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
Really opened up with a powerful bottom end. Wrap-around 3d soundstage. I did not expect this upgrade to have such a positive impact on SQ. I am pleasantly surprised.
Do these 2.3TL's have a limit !?
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
https://www.parts-express.com/nte-303-silicone-thermal-heat-sink-compound-1g-tube-5-pcs--nte303
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
250 hours later the mojo is back in spades. It took that long for everything to settle and burn in!
It is sounding great
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
What wire did you go with?
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded
Wireworld Silver Eclipse IC's and speaker cables
I got it through Musical Concepts.
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
Thanks!!
I would not change a thing but I would like to try Musical Concepts new PA7 frontend someday.
Got the HD lighted switch from Musical Concepts.
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"
SRS 2.3TL (Fully Modded)...Velodyne Optimum 8 subwoofer
1KVA Dreadnought
Marantz SA 8005
Pioneer PLX-1000 Turntable - Shure SC35C/N35X - V15III/VN35HE
Yamaha TX-540 Tuner...Sony BDP-S570
Sony PS4
Separate subpanel with four dedicated 20 amp circuits.
1. Amplification 2. Analog 3. Digital 4. Video
"All THAT IS LOST FROM THE SOURCE IS LOST FOREVER"