DIY headphone amps - Gilmore?

seroxatmad · 26th December 2006, 02:50 PM

Hi

Getting back into Electronics/Audio and on designing the PCB for the Gilmore Dynamic Headphone Amplifier.

A few questions! Ive noticed on the Gilmore Website for the Kit/Ready Made units the PCBs have 4 variable blue presets - any ideas what this is for compared to the circuit posted here http://headwize.com/projects/showfil...lmore3_prj.htm

Also any ideas what the new equivanlents will be for 2SC1815/2SA1015/2SK389/2SJ109 transistors?

Regards and thanks in advance.

John

P.S Anyone other newer designs anyone know/recommend?

Nisbeth · 26th December 2006, 05:33 PM

The trimmers are for DC-offset adjustment. If you read the assembly instructions for the Rev. C board from www.djgardner.com everything should be much clearer

As for the transistors, the SA1015/SC1815 should be obtainable and I am not aware of any replacements for these in the Gilmore amps. The replacements for the FETs are matched pairs of 2SK170/2SJ74s.

/U.

26th December 2006, 02:50 PM	#1
seroxatmad diyAudio Member Join Date: Dec 2006 Location: Durham, UK	DIY headphone amps - Gilmore? Hi Getting back into Electronics/Audio and on designing the PCB for the Gilmore Dynamic Headphone Amplifier. A few questions! Ive noticed on the Gilmore Website for the Kit/Ready Made units the PCBs have 4 variable blue presets - any ideas what this is for compared to the circuit posted here http://headwize.com/projects/showfil...lmore3_prj.htm Also any ideas what the new equivanlents will be for 2SC1815/2SA1015/2SK389/2SJ109 transistors? Regards and thanks in advance. John P.S Anyone other newer designs anyone know/recommend? __________________ Head Amps:Millet Max / Kumisa CKIII \|Speakers:Rega RS5 \|Amp:Roksan Kandy \|CD:Roksan Kandy \|TT: RegaP2

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Some questions on the Gilmore headphone amp.	Artie	Headphone Systems	2	22nd April 2009 12:21 AM
Headphone out for Tube Amps	jpick	Headphone Systems	4	25th November 2005 10:00 AM
Tiny Headphone Amps!	Relax	Headphone Systems	16	4th August 2005 02:40 PM
Tiny Headphone Amps!	Relax	Headphone Systems	4	2nd August 2005 09:03 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

26th December 2006, 05:33 PM	#2
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	The trimmers are for DC-offset adjustment. If you read the assembly instructions for the Rev. C board from www.djgardner.com everything should be much clearer As for the transistors, the SA1015/SC1815 should be obtainable and I am not aware of any replacements for these in the Gilmore amps. The replacements for the FETs are matched pairs of 2SK170/2SJ74s. /U.