|Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.|
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
||Thread Tools||Search this Thread|
|8th March 2014, 08:41 PM||#1|
Join Date: Jan 2012
PASSIVE PRE-AMPLIFIER BUILDER REQ
I'm looking for an experienced builder thats capable of building a mini passive pre-amp as good or close to the spec of a Townshend Allegri preamp does anyone here have that kind of experience and knowlege of passive pre amps at a budget ?? Must have knowlege and experience of working with Autotransformers !!
Allegri Preamplifier | www.townshendaudio.com
Frequency response: 8Hz-100kHz +/- 0.1dB
Maximum signal level: 4V RMS 8Hz; 10V RMS 20Hz
Maximum DC offset : 5mV. (For undistorted 8Hz)
Distortion: Less than 0.01% at 400Hz, 10V (2nd and 3rd harmonic only)
Input impedance is dependent upon the load impedance and gain setting. So, with a power amplifier having 20kohm input impedance (typical)
Impedance: At 0dB, input impedance is 20kohm
At -10dB (normal listening) input impedance is 200k
Inputs: 3x pairs RCA phono sockets (gold plated)
Outputs: 1x pair RCA phono sockets (gold plated) + Subwoofer : 1x pair RCA phono sockets (gold plated)
Dimensions: Size : 150mm/185mm (D) x 92mm (W) x 43mm (H) Approx
Autotransformer has a Four position input selector, a mute switch and a 24 position volume control with intervals chosen to cover a wide range of volume levels in different systems. Autotransformers are wound with Audio Fractal-Wire and laminated with ultra-thin metal laminations for the highest possible resolution.Volume 24 discrete steps, ranging from +4dB to -60 dB.
Well something along these lines ??
Last edited by laughingbuddha; 9th March 2014 at 01:35 AM.
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|passive pre-amplifier||laughingbuddha||Equipment & Tools||25||16th March 2014 02:34 PM|
|Passive Preamplifier builder req||laughingbuddha||Construction Tips||2||15th March 2014 06:51 PM|
|Help req'd with El Cheapo Phono Pre||Ropie||Analogue Source||19||1st March 2005 06:56 PM|
|7.1 passive pre amplifier||jouch||Pass Labs||8||22nd January 2003 05:51 PM|
|New To Site?||Need Help?|