B
Bob Savage
Well-known member
Nothing touches my Roland GP-8 and Carvin FET-400 power amp. NOTHING!
skoora":1bwq825r said:I can't explain why electronically, but I always found pre's sounded much better using heads (usually Marshall) for power than separate, rack power amps. I think Metallica slaved their 2C+ into Marshall heads for Power IIRC.
I remember working in a store where we would take the JMP-1 and Triaxis and they would both sound better going into the return of a DSL's loop than using either the 9200/EL34 100/100 or Mesa 2:90.
I've got both, and if you find what you like, they'll both kickass in the right hands at the right time.Filter500":16nqyyau said:I agree with him. I've tried the rack thing, and they just never sounded or felt as alive as my heads.
guitarslinger":2lxgglem said:Meh, he was probably try to sell XTC heads that week.
I'll pit my Fish/2150 setup against anything.
DeezDemos":1qr4ijw4 said:I wonder if the folks at Line6 have ever seen this text in "Blue"..........?![]()
Reinhold Bogner":1f0thq7h said:a split system of pre and power amp can not give you the dynamics and response of a single circuit which incorporates both
I also agree with Reinhold's statement.JamesPeters":1f0thq7h said:I agree with Bogner's statement. If you're trying to get the same response as an amp "head" by using a separate preamp and poweramp, it's probably not going to happen 100% (unless the amp is designed in such a way that it might as well be like a separate preamp and poweramp, which is possible).
Keep in mind, that in an amp head the entire preamp's voltage supply usually is taken of the power voltage supply.supersonic":1f0thq7h said:John Suhr has said that it's got to do with the transformer(s). If you could use the same power for all units in a rack, it would respond and sound like a head.
Ja servus nermbercher!novosibir":kljstd4r said:Reinhold Bogner":kljstd4r said:a split system of pre and power amp can not give you the dynamics and response of a single circuit which incorporates bothI also agree with Reinhold's statement.JamesPeters":kljstd4r said:I agree with Bogner's statement. If you're trying to get the same response as an amp "head" by using a separate preamp and poweramp, it's probably not going to happen 100% (unless the amp is designed in such a way that it might as well be like a separate preamp and poweramp, which is possible).
And the following quote already is a diffuse hint to the reason, why:
Keep in mind, that in an amp head the entire preamp's voltage supply usually is taken of the power voltage supply.supersonic":kljstd4r said:John Suhr has said that it's got to do with the transformer(s). If you could use the same power for all units in a rack, it would respond and sound like a head.
As long as you're playing an amp head pretty quite, the head does have the same dynamics and response like a split system w/ separate preamp and poweramp, but...
... as soon as you're playing loud and you struck a chord, the voltage in the power section of a head is sagging, dropping - dropping down from i.e. 480V B+ at idle down to 380...400V at full blast i.e. in old Plexi Marshalls or down to 420...440V in amps with a more stable filtering like i.e. in a SLO100
So what happens, if/when the preamp's voltage supply is taken of the power stage's supply? Yes, the preamp's voltage supply also is sagging - and recovering - and sagging again...
In a separate preamp the voltage supply always stays stable w/o any sag during playing - and this is, what's influencing the dynamic and response difference of both methods, the more, the louder you're playing.
Larry
Ja servus niebergschmeckter Amidegenaro":2wmj9wv6 said:Ja servus nermbercher!
Binn ka Ami, hab imma nu mein Deitschen Ausweis...novosibir":i29ewwkq said:Ja servus niebergschmeckter Amidegenaro":i29ewwkq said:Ja servus nermbercher!![]()
Ah suuu, dann iss ja alles baleddi. Bist wohl aa aus Nermberch? Odda aus Frangn?degenaro":2l5bddmk said:Binn ka Ami, hab imma nu mein Deitschen Ausweis...