I just tried it sans the Mapletree using the SB3 as the pre and the constricted sound stage was still there. There was way too much gain so if I was going to use this permanently, I would have to replace the jumpers and use the Trends pots. Biamping is twice the hassle. I do think that the tubed pre adds a lot to the sound quality. Could the DC offset have something to do with this.😕 I just checked and adjusted it last week.
Raj
Raj
Raj,
Regarding the Obbs look at this thread and the ASC, Ducati and Inco caps: http://www.humblehomemadehifi.com/Cap.html .
They need some time those motor caps.
/Erling
Regarding the Obbs look at this thread and the ASC, Ducati and Inco caps: http://www.humblehomemadehifi.com/Cap.html .
They need some time those motor caps.
/Erling
rajacat said:
I just checked out the link skorpion posted...
try these?
http://www.electrumaudio.com/duelund-vsf-pio.html
Davec113 said:
I just checked out the link skorpion posted...
try these?
http://www.electrumaudio.com/duelund-vsf-pio.html
Hmmm.....since I'm biamping those pieces of audio jewelery would set me back $1000.
In my dreams I might spring for these. http://www.v-cap.com/oilcapacitors.htmlRaj
Installed the nude Vishay's last night. They made a pretty big difference from what I can tell. A couple weeks ago I installed the Vishay MKT1822 caps and noticed that they made my system a little brighter. Dweekie noticed that they actually attenuated his high's a little bit so it seemed system dependent to me since he had changed his resistors to Caddock's. Well once I changed to the Vishays the high's definitely smoothed out. Things did seem to get dynamically flattened but it seems to be getting better with time. For the most part its smooth and clean. I can't comment on details yet because I just inserted a DAC-AH into the chain which I think is more detailed than my previous source.
End result: Upgrade the resistors with something better.
Another note: I ordered a TKD 2500 series Pot to replace the stock pot. It's waaaaay too big to fit into the case. Go for something smaller if you were considering this pot and keeping the stock case.
End result: Upgrade the resistors with something better.
Another note: I ordered a TKD 2500 series Pot to replace the stock pot. It's waaaaay too big to fit into the case. Go for something smaller if you were considering this pot and keeping the stock case.
recca. I see you got the Dac AH. Did you get the standard (red PCB) version from diyclub.biz or an already modified one ?
Would be interested to hear what you think of it.
Would be interested to hear what you think of it.
/Temp Thread Jack
DAC-AH definitely sounds more detailed than the Chaintech AV710 Sound card I was using. Bass leaves a little to be desired in terms of definition. As far as the PCB I'm not sure as I haven't cracked it open yet. Got a slew of mods waiting in the wings though. Think I'm going to put the Trends Mods down for a bit as I plan to install the TKD pot and Jupiter Caps in the DAC-AH and run the Trends in Power Amp mode.
I'll shoot you and email with more.
/END
FWIW - The Trends is sounding very good for now!
DAC-AH definitely sounds more detailed than the Chaintech AV710 Sound card I was using. Bass leaves a little to be desired in terms of definition. As far as the PCB I'm not sure as I haven't cracked it open yet. Got a slew of mods waiting in the wings though. Think I'm going to put the Trends Mods down for a bit as I plan to install the TKD pot and Jupiter Caps in the DAC-AH and run the Trends in Power Amp mode.
I'll shoot you and email with more.
/END
FWIW - The Trends is sounding very good for now!
heatsinks
Just received my heatsinks from wluk on Ebay. Nice fast service and they appear to be high quality aluminum and nicely finished.🙂
Raj
Just received my heatsinks from wluk on Ebay. Nice fast service and they appear to be high quality aluminum and nicely finished.🙂
Raj
Ahhhh
.... reinstalled the stock caps. My experience tells me that the Bennics have much better resolution, imaging, transparency and ability to cast a large sound stage. Maybe if you have an overly bright system the stock caps might not suit you and the Obbligatos would be a better fit. I do like the lower middle range of the Obbs.
.....Raj
.... reinstalled the stock caps. My experience tells me that the Bennics have much better resolution, imaging, transparency and ability to cast a large sound stage. Maybe if you have an overly bright system the stock caps might not suit you and the Obbligatos would be a better fit. I do like the lower middle range of the Obbs......Raj
input mods
Could the input lines be routed by running from the input RCA's through the convenient holes in the PCB and directly along the bottom of the board to the J2 jumper connector? Would shielding be necessary or could the PCB's ground plane act as the shield? The old PCB input traces would then be grounded as stated by Mardis. This would be for a Trends 10.1 to be used as a power amp only.
Raj
Could the input lines be routed by running from the input RCA's through the convenient holes in the PCB and directly along the bottom of the board to the J2 jumper connector? Would shielding be necessary or could the PCB's ground plane act as the shield? The old PCB input traces would then be grounded as stated by Mardis. This would be for a Trends 10.1 to be used as a power amp only.
Raj
I'm interested in this mod as well. I'm thinking the ground plane would be okay but I might just use shielded or twisted cable anyway. I'm still unsure about the ground situation though. Where do you ground the RCA inputs?
I'm no expert😀 but I think that you would just leave the RCA's grounded just as they are stock. The post by OzMikeH on page 29 has me thinking that if you were to discard the original enclosure it would be a lot easier to do some of the mods by using the PCB as a shield and also connecting caps to the bottom of the board.
..Raj
..Raj
Kewl. The reason I said that the ground plane should be enough is this. Previously I changed the DC Bias cap to a much larger one. When it physically touched the Tripath chip a ton of noise would be introduced into the system. I relocated that cap to the bottom of the PCB and folded it right under the chip. Still no noise even though its almost touching it.
Re: input mods
I am planning on doing this when I get around to changing the caps. It looks like the input path is unnecessarily long if you're going to bypass the volume pot.
Do you know what the next component in line is past the jumpers?
Oh yeah, I might go to a bigger box, or at least an additional box that the Trends sits on to contain the input caps...
Edit: ok, the caps are next... so why not wire the input directly to the cap instead of j2?
rajacat said:
I am planning on doing this when I get around to changing the caps. It looks like the input path is unnecessarily long if you're going to bypass the volume pot.
Do you know what the next component in line is past the jumpers?
Oh yeah, I might go to a bigger box, or at least an additional box that the Trends sits on to contain the input caps...
Edit: ok, the caps are next... so why not wire the input directly to the cap instead of j2?
Re: Re: input mods
It would be nice to have a wiring diagram. Perhaps the input lines could be directly connected to the input caps? I'm not sure exactly where you would do this. 😕
Davec113 said:
It would be nice to have a wiring diagram. Perhaps the input lines could be directly connected to the input caps? I'm not sure exactly where you would do this. 😕
Which end of the cap would you attach the input line? Which cap is for what channel? I suppose you could put a meter on, let's say the right RCA and see which cap is connected.
rajacat said:
I was just checking out Pano's site, he does use j2 as the place to go if you're not using a volume pot. However, the T-amp schematic on his site has the input caps as the first component in the signal path. I'm not sure if the general schematic on Pano's site is the same as the Trends though.
A continuity test should tell you which channel is which... I'll have to look at it when I replace the caps. I was thinking if j2 goes right to the cap, then why not just solder the input wire directly to the cap...
Yes, a Trends-specific schematic would be really nice 😀
Re: Re: input mods
The input caps are next.
You go to the back end of the cap. (Back is toward the connectors in/out). Left channel is the cap in the rear, nearest the power plug and the switch. The ohter one is the right channel. 😉
The schematic is a general one. I'll see what I can do about a Trends schema. Don't hold your breath, tho. It's super busy around here.
Davec113 said:
The input caps are next.
rajacat said:
You go to the back end of the cap. (Back is toward the connectors in/out). Left channel is the cap in the rear, nearest the power plug and the switch. The ohter one is the right channel. 😉
Davec113 said:
The schematic is a general one. I'll see what I can do about a Trends schema. Don't hold your breath, tho. It's super busy around here.
- Status
- Not open for further replies.