Forte FP1

Does anyone know the specs and dip settings for the Forte FP1 phono stage?

Your best bet for a copy of the FP1 manual is Vintage Amp Repair. Jon Soderberg , phone 916 721-9611
Hey, if you still need a copy, let me know. I have one.

Thanks Shawn- I found it recently. Rich
I have misplaced the manual for my Forte FP-1. If anyone can email a scan I would be very appreciative.
I believe the Forte FP1 uses the same settings as the Threshold FET 10. The layout may be different, but you'll get the gist. It seemed to work for a friend who has the FP1. I copied and pasted this from DIY Audio:

Threshold FET-10/PC phono settings
I recently bought one of these and it came with a manual. In case someone picks one up w/o a manual here is the information for setting the dip switches and gain:

As for setting up the impedance and capacitance loading - with the top open and the front of the preamplifier facing you, locate the two red 8 position dip switches on the far left side. If a dip switch is set to the left, it is ON. If it switched to the right, it is OFF.

Resistance Loading:
#1 - 22 ohms
#2 - 47 ohms
#3 - 100 ohms
#4 - 1,000 ohms

1-4 OFF = 47k ohms (ie, MM cartridge)

Capacitance Loading:
#5 - 1,000 picofards
#6 - 250 picofarads
#7 - 150 picofarads
#8 - 100 picofarads

5-8 OFF = 50 picofarads

To set the gain, locate the two jumper sliders on the middle left of the board. These are colored blue and each cover two pins of a three gold plated prong.

For highest gain, each jumper slide is positioned towards the center of the preamplifer. In this case the exposed pins are those nearest to the front and back of the preamplifier.

For 20dB less gain, the jumpers are located away from each other and toward the back and front of the preamplifier. The exposed pins will be nearest to the center of the preamplifier.
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I'm sorry for reviving a somewhat old thread, but I just happened across this and noticed that the information that Heyraz has given is not quite accurate for the Forte FP-1 phonostage.

Inside the phonostage, there is a bank of dip switches numbered 1-8. Numbers 1-4 are for one channel; numbers 5-8 are for the other channel. What ever you do to one channel, the same should be done for the other channel in a MIRRORED FASHION.

Number 1 and number 8 are for setting the capacitance for each channel. When both of these switches are turned to the off position you will have 50pf of capacitance. With both of these switches on, you will then have 200pf of capacitance.

Number 2-4 adjusts the loading for one channel as follows:
2 on = 47
3 on = 100
4 on = 1,000
You may use any or all of these in any combination by just adding the amount. For example, 2 is off, 3 is on, 4 is on for a total of 1,100 ohms.
If 2-4 are all off, this gives you 47,000 ohms.

This is exactly the same for the other channel but in a MIRRORED IMAGE.
5 on = 1,000
6 on = 100
7 on - 47
So, if both 5 and 6 are on, and 7 is off, you will then have 1,100 ohms in this channel. If 5,6,7 are all off, this will give this channel 47,000 ohms.

What ever you do to one channel, you must do to the other channel in the mirrored image.


To set the gain of the FP-1, you will notice in the center, (inside the phonostage of course)two blue plastic covered pieces that act as jumpers. One for each channel. They only cover two of the three pins for each channel. You will always have the middle pin covered, but moving the blue jumpers to also cover the outside and middle pin will give you the low gain setting of about 40dB. Moving the blue jumpers to cover the middle and inside pins will give you the high gain setting of about 60dB.

I hope that this will be of help to those who are still enjoying this wonderful phonostage. I've had this piece since new and use it as a backup to my reference piece.
I heed help with my FP1. I bought it new years ago. Being from Manila, we use 220 volts. I live in California and I want to use it in my system. Where can I find a power supply or can I use a different source? I tried contacting Treshold but with no luck. They told me they cant help even with a schematic. TIA
Problem solved. I bought a step up transformer for $10 (used). The sound difference between the Rotel phono stage and the FP1...night and day. Not even close. ;) thanks .
night and day difference...ok but which is the night and which is the day? I have a pristine FP1 I've owned for nearly 15 years and am more than a little curious just how good it is...thanks.