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Gyraf Pultec Style EQ Finished
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Gyraf Pultec Style EQ Finished
Hey Turtlecrockers,
I just wrapped up this G Pultec project. For those who don't know about this one all the details are here: http://www.gyraf.dk/
I took the photo of the guts before I had installed the input transformer, but it now has transformer in and out. Trafos are some I got off rick, not sure what they are but they can be wired 2:1 or 1:1 so they were good for this. Tube is 50's NOS mullard off the bay, somewhere in the UK if I remember rightly. I was concerned that the massive power transformers I had lying around were going to make this bad boy hum because I physically couldn't get them far away from the audio boards, but it's quiet as a mouse! I've just used the small can style inductors, I might yet get a 'nice' inductor with multiple taps and try that out too.
I really like the sound of this one, I'll have to build another one soon so I can use it on drum bus, mix bus etc! If anyone in Aus. decides to build this one and is having trouble sourcing any parts give me a yell.
I just wrapped up this G Pultec project. For those who don't know about this one all the details are here: http://www.gyraf.dk/
I took the photo of the guts before I had installed the input transformer, but it now has transformer in and out. Trafos are some I got off rick, not sure what they are but they can be wired 2:1 or 1:1 so they were good for this. Tube is 50's NOS mullard off the bay, somewhere in the UK if I remember rightly. I was concerned that the massive power transformers I had lying around were going to make this bad boy hum because I physically couldn't get them far away from the audio boards, but it's quiet as a mouse! I've just used the small can style inductors, I might yet get a 'nice' inductor with multiple taps and try that out too.
I really like the sound of this one, I'll have to build another one soon so I can use it on drum bus, mix bus etc! If anyone in Aus. decides to build this one and is having trouble sourcing any parts give me a yell.
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Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Nice Job Nick, there's something inherently satisfying about hand building a piece of equipment
Alastair Reynolds
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
Broadcast Radio Engineer
Master of the Dark Arts (Broadcast)
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Alastair Reynolds - TRM Endorsed
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Re: Gyraf Pultec Style EQ Finished
There certainly is, and it's the best when it fires up first time!
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
These sound so sweet, I've got a pair and use them heaps...
Nice looking build too.
M
Nice looking build too.
M
Last edited by mylesgm on Tue Aug 31, 2010 11:03 pm, edited 1 time in total.
Myles Mumford
Producer/Composer/Engineer/Sound Artist
Making records in sunny Melbourne
www.mylesmumford.com
Producer/Composer/Engineer/Sound Artist
Making records in sunny Melbourne
www.mylesmumford.com
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mylesgm - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
mylesgm wrote:These sounds so sweet
Tell me about it!
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Looks great! Been considering this as a next build after I finish my pair of 1176's, so it's nice to see some finished and hear good feedback.
Really neat front panel too!
Really neat front panel too!
Alistair McLean
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Re: Gyraf Pultec Style EQ Finished
Very Nice! Did you source all parts from Aus? What was the total cost if it isn't rude? Also, where did you get the PCB form? Might make one of these, perhaps - I like the idea of DIY rack gear.
Richard Antel
Fine connoisseur of all things synth.
Fine connoisseur of all things synth.
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Hybrid88 - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Hybrid88 wrote:Very Nice! Did you source all parts from Aus? What was the total cost if it isn't rude? Also, where did you get the PCB form? Might make one of these, perhaps - I like the idea of DIY rack gear.
Hi there,
Most of the parts came from australia, or suppliers that happily ship to Australia. Caps and resistors were from futurlec.com.au. Switches, case and connectors from Altronics and anything I missed I picked up from WES components. The tube came from a UK supplier I found on ebay. PCB's you can order directly from this guy, Gustav here: http://www.prodigy-pro.com/diy/index.php?topic=10776.0 Transformers are really up to you... you can go expensive or cheap. You need a 2:1 and a 1:1. You can use a multi-tapped wound inductor or individual can style inductors, which will vary the price a bit.
I reckon you could scrape one together for 250-300 bucks, but it might be worth spending an extra couple of hundred for nice transformers etc.
Give me a couple of days and I'll pull my info together and email it to you... send me a PM.
Nick.
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Has anyone compared these to other pultecs?
Old school of thought...
- prequalizer
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Re: Gyraf Pultec Style EQ Finished
Having used/been around Rick's Pultecs a fair bit I would say the Gyraf doesn't sound very much like a real one... but it still very sounds good!
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
That's a beautifully named analog echo you have there.
Andy Evans
http://www.mud.net.au
http://www.mud.net.au
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Chinagraf - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
Chinagraf wrote:That's a beautifully named analog echo you have there.
I thought it looked a bit dodgey myself.
Chris Hallam.
https://soundcloud.com/hallamsound
Whatever floats your boat.
https://soundcloud.com/hallamsound
Whatever floats your boat.
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Chris H - Forum Veteran
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Re: Gyraf Pultec Style EQ Finished
Perhaps you would prefer this gear ...
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Andy Evans
http://www.mud.net.au
http://www.mud.net.au
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Chinagraf - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
wit
Rick O'Neil
I think we went to different schools together
turtlerockmastering.com
we listen
I think we went to different schools together
turtlerockmastering.com
we listen
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rick - Moderator
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Re: Gyraf Pultec Style EQ Finished
Chinagraf wrote:That's a beautifully named analog echo you have there.
If you knew what it sounded like, maybe you wouldn't want your name on it!
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
witless
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Rick O'Neil
I think we went to different schools together
turtlerockmastering.com
we listen
I think we went to different schools together
turtlerockmastering.com
we listen
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rick - Moderator
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Re: Gyraf Pultec Style EQ Finished
This says everything
I just want to pinch those big dreamy cheeks.
I just want to pinch those big dreamy cheeks.
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Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
you see, you think this is pretty funny guys, but being my age I've been likened to franklin the turtle by peers for as long as I can remember. What I want to know is what made rick think of it?!?!
P.S. Rick thanks for the email, there is a package on its way to mill rd as we speak.
P.S. Rick thanks for the email, there is a package on its way to mill rd as we speak.
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
I'd like to start this build but I'd like to use the grand master audio front panels. I think this means that the gyraf front panel pcbs want fit and I'd have to fly the cables from the pots to the pcb. Any words of wisdom before I order up? Who else is doing panels??
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Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
I assume that parusha guy who got banned from the prodigy forum makes one... have you seen his site? it's something like diy-racked.com or something.
have you seen these ones? http://don-audio.com/Front-Panels
have you seen these ones? http://don-audio.com/Front-Panels
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Chinagraf wrote:Perhaps you would prefer this gear ...
........Ah! The Hallam Rack........ I prefer the one I sleep with!
Chris Hallam.
https://soundcloud.com/hallamsound
Whatever floats your boat.
https://soundcloud.com/hallamsound
Whatever floats your boat.
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Chris H - Forum Veteran
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Re: Gyraf Pultec Style EQ Finished
waitup wrote:I assume that parusha guy who got banned from the prodigy forum makes one... have you seen his site? it's something like diy-racked.com or something.
have you seen these ones? http://don-audio.com/Front-Panels
I have seen that one Nick.....but it's brown...sorry but I can't do brown. Plus the lamp and the HF atten knob are cluttered.
Also, I've heard varying reports on the purusha chap so I'm not really going to go there.
I've dealt with Pete from Grand Master before and he's all good. I'm waiting for his email reply on price.
Last edited by Ben M on Sun Sep 19, 2010 9:00 am, edited 1 time in total.
Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
Chris H wrote:Chinagraf wrote:Perhaps you would prefer this gear ...
........Ah! The Hallam Rack........ I prefer the one I sleep with!
Chris...err....you sleep with a rack case? That's committed.
Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
Hi all
*Warning Gpultec porn with occasional front panel nudity.
Finished these today and they powered up and performed a treat.
Big thanks to Nick and Blake for their help.
Peace
*Warning Gpultec porn with occasional front panel nudity.
Finished these today and they powered up and performed a treat.
Big thanks to Nick and Blake for their help.
Peace
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Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
hey they look great , but where is all the stuff thats supposed to be inside ..?
inducters and tubes and stuff?
inducters and tubes and stuff?
Rick O'Neil
I think we went to different schools together
turtlerockmastering.com
we listen
I think we went to different schools together
turtlerockmastering.com
we listen
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rick - Moderator
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Re: Gyraf Pultec Style EQ Finished
Gpultec.. Rick....Gpultec.
This is a simplified circuit and no interstage.
Inductors are there...see if you can pick them out.
The valves are Siemens (gold pins) E188CC matched and supplied by Andrew Kay.
I was really surprised at how good these units sound and how quiet they are. And even more surprised they worked great first time.
Ta, I'm glad you likey.
This is a simplified circuit and no interstage.
Inductors are there...see if you can pick them out.
The valves are Siemens (gold pins) E188CC matched and supplied by Andrew Kay.
I was really surprised at how good these units sound and how quiet they are. And even more surprised they worked great first time.
Ta, I'm glad you likey.
Ben Moore
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
Harvest Recordings
Website: http://www.harvestrecordings.com.au
Facebook: http://www.faceback.com/harvestrecordings
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Ben M - Valued Contributor
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Re: Gyraf Pultec Style EQ Finished
i must be going blind i am looking for big heavy things that look kinda old
i cannot see them anywhere
sure looks great though
i cannot see them anywhere
sure looks great though
Rick O'Neil
I think we went to different schools together
turtlerockmastering.com
we listen
I think we went to different schools together
turtlerockmastering.com
we listen
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rick - Moderator
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Re: Gyraf Pultec Style EQ Finished
Good work ben, you'll get much use out of these. I actually have developed a problem with mine... when I put them on something I can't take it off.
Nick Franklin
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
Record Producer: http://www.nickfranklin.net
Custom Built Audio Electronics: http://www.nfaudio.com
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waitup - Frequent Contributor
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Re: Gyraf Pultec Style EQ Finished
Nice work !
The Gyraf crew really know about great EQ - so I imagine they would sound really good.
The Gyraf crew really know about great EQ - so I imagine they would sound really good.
C h r i z t o w n o
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Re: Gyraf Pultec Style EQ Finished
They look great, how hard is the build?
looking for a first time DIY
looking for a first time DIY
Oliver Horn
Perth
Perth
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