|  | | 
11-22-2012, 09:59 AM
|  | Registered User | | Join Date: Mar 2008 Location: Oakland, CA | | | I experimented with the bias quite a bit. I found that could biases seem give a more dynamic response with this amp.
I also went back and forth between some Sovtek WXT+ tubes and some Sovtek 5881's. even though the WXT+ are supposed to be "better" and flatter tubes, I found that the upper midrangy peaks of the 5881's to be nice with a band.
The difference between the high power and low power is very noticeable when playing with a band. I play kinda hard and find the low power to be kinda saggy ( in a good way). High power really punches! Not a big volume difference though.
__________________
Flatwound Club Member #760
|
11-22-2012, 10:29 AM
|  | Endorsing Curmudgeon: Mal's Kitchen Cruelties ... | | Join Date: Jun 2002 Location: Columbia River Gorge | | | If the amp is setup for 6L6's the *best* in terms of production quality and strength seems to be the Winged C. I have those in my RD100 and it went over 100 watts clean on the bench according to my tech - from a pair of 6L6's ... Idid not know hat about the hi vs low power switch. I've been using as the practice space vs gig switch. Maybe I'll start just using the low power side.
My Rd100 is different but still in the family. Tonally I like this amp a lot through 2 15's. Mine has the deep switch. That can be trouble as it produces a HUGE low end component. When I use it, I turn the volume down, bass knob down, flip the switch and readjust. Can get very dubby and with some nice power tube 'warmth'.
Really a fun amp. Glad it's in the stable though my GK and Gb heads see more use live.
__________________
I think I'd know normal if I saw it ... 'Calvin
|
11-23-2012, 02:20 AM
|  | Registered User | | Join Date: Jul 2006 Location: Los Angeles, CA | | | I don't recall what tubes I switched into mine- I took it in to "Lord Valve" when I still lived in Denver to give it a once over after the old tubes started to go out and took his recommendation for new tubes. It definitely sounded better with the newer/ more robust set. You could probably talk to one of the reliable tube sellers or a good tube tech and see what they would recommend if they know about these amps.
__________________
G&L Club Member #10 |
11-23-2012, 03:58 AM
|  | Smile more, ok?
Staff Reviewer; Bass Gear Magazine Moderator | | Join Date: May 2004 Location: Columbia MO | | | lord valve/nbs electronics
here's the address and phone number:
230 South Broadway Denver, CO 80209
(303) 778-1156
__________________
"Boy, that makes about as much sense as putting a milk bucket under a bull-cow and expecting to come home with breakfast."
|
11-23-2012, 06:38 AM
|  | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | Quote:
Originally Posted by Chef  lord valve/nbs electronics
here's the address and phone number:
230 South Broadway Denver, CO 80209
(303) 778-1156 | Thanks. Hopefully, I won't have to call them for awhile !
__________________
R.I.P Duck Dunn, 2012.
|
11-24-2012, 12:07 PM
| | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | | And here it is, sitting on top of my LDS 215/tweet cab, loaded with JBL E 140's, with my '98 Jazz.
__________________
R.I.P Duck Dunn, 2012.
|
11-24-2012, 12:55 PM
|  | Registered User | | Join Date: Aug 2007 Location: Toronto Ontario Canada | | | Input jacks work like this With no plug in either the amps input circuitry is grounded, Plug into input 1 Connects two 68kΩ to the amps input and a 1MΩ resistor to ground. Input 2 grounds one of the 68KΩ resistors so that the amp sees the input signal cut in half. If both 1 and 2 are used the signals are passively mixed by the 68KΩ resistors. Hope that helps.
__________________
Paul
|
11-24-2012, 01:40 PM
| | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | | Guess I will have to experiment for awhile. As far as the tone stack goes, having the mid knob on 10 gives alot more fuller, punchier tone than going in the opposite direction. Also, not hearing a whole lot of difference between Normal and Bass channels. The Deep switch is definitely a keeper, really gives it that nice round tone. Brite switch is ice pick highs and not very pleasant. I suppose different brands of 6L6GC tubes would make a difference also. Fun stuff ! Amp is definitely loud though, even at " Low " power.
__________________
R.I.P Duck Dunn, 2012.
|
11-29-2012, 06:28 AM
| | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | Quote:
Originally Posted by 4Mal If the amp is setup for 6L6's the *best* in terms of production quality and strength seems to be the Winged C. I have those in my RD100 and it went over 100 watts clean on the bench according to my tech - from a pair of 6L6's ... Idid not know hat about the hi vs low power switch. I've been using as the practice space vs gig switch. Maybe I'll start just using the low power side.
My Rd100 is different but still in the family. Tonally I like this amp a lot through 2 15's. Mine has the deep switch. That can be trouble as it produces a HUGE low end component. When I use it, I turn the volume down, bass knob down, flip the switch and readjust. Can get very dubby and with some nice power tube 'warmth'.
Really a fun amp. Glad it's in the stable though my GK and Gb heads see more use live. | I decided to go with the SED Winged C from TCtubes. They match and burn them in for you. They also agreed with this tube being the best for the HD150, if you can't find/afford the Phillips 7581A's.
__________________
R.I.P Duck Dunn, 2012.
|
11-29-2012, 08:10 AM
| | Smile more, ok?
Staff Reviewer; Bass Gear Magazine Moderator | | Join Date: May 2004 Location: Columbia MO | | | "Match and burn them for you."
You still need to have bias addressed anytime you change power tubes.
__________________
"Boy, that makes about as much sense as putting a milk bucket under a bull-cow and expecting to come home with breakfast."
|
11-29-2012, 08:59 AM
| | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | Quote:
Originally Posted by Chef "Match and burn them for you."
You still need to have bias addressed anytime you change power tubes. | Yup, gonna have my tech do that, a fellow bass player who is an amp tech during the day, and used to own one of these heads. He's psyched !
__________________
R.I.P Duck Dunn, 2012.
Last edited by jnewmark : 11-29-2012 at 09:20 AM.
|
11-29-2012, 09:01 AM
| | Registered User | | Join Date: Oct 2011 Location: Saturn, Solar System | | | i played through one of them + 412 yesterday. sounded like ****. even with the lows all the way down it sounded super muddy. i dont know why maybe its bad tubes? maybe its because the venue told me not to put it on high power so i only had 50 watts? i dont know next time ill bring my own |
11-29-2012, 09:19 AM
| | Keepin' the Groove Alive ! | | Join Date: Aug 2006 Location: Stax 1966 | | Quote:
Originally Posted by backup i played through one of them + 412 yesterday. sounded like ****. even with the lows all the way down it sounded super muddy. i dont know why maybe its bad tubes? maybe its because the venue told me not to put it on high power so i only had 50 watts? i dont know next time ill bring my own | Huh, sorry to hear that. Even with mismatched brand of tubes, this head sounds wonderful through my 215 loaded with JBL E140's.
__________________
R.I.P Duck Dunn, 2012.
|
11-29-2012, 09:24 AM
| | Smile more, ok?
Staff Reviewer; Bass Gear Magazine Moderator | | Join Date: May 2004 Location: Columbia MO | | | The two I had were about the cleanest, clearest tube amps ever. There must be something else going on there.
__________________
"Boy, that makes about as much sense as putting a milk bucket under a bull-cow and expecting to come home with breakfast."
|
11-29-2012, 09:38 AM
| | Registered User | | Join Date: Oct 2011 Location: Saturn, Solar System | | Quote:
Originally Posted by Chef The two I had were about the cleanest, clearest tube amps ever. There must be something else going on there. | yes maybe it was the cab (musicman 412) or the room acoustics.
everything was generally set up poorly and sound guy did some strange things. so it may not be the head. |
11-29-2012, 07:42 PM
| | Registered User | | Join Date: Dec 2006 Location: Cincinnati, OH | | I love my HD150!
It plays great with my '78 Ray as well as my passive basses and really responds nicely to different pedals. It's much cleaner sounding than my SVT-VR but with the deep switch it can get down right boomy. I've never tried bridging the guitar and bass channels together but I have used this as both my main bass head and my main guitar head at different times. Right now I'm looking for a really good tech to give it some new tubes, bias and cap job as necessary and then I'll start the search for a good condition matching 1980ish cab to go with it (instead of the Berg HT322 I'm currently using).  | | Thread Tools | Search this Thread | | | | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | |
