Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: kagliostro on February 02, 2011, 03:56:05 am

Title: A question for PRR about the old 260s he had in past
Post by: kagliostro on February 02, 2011, 03:56:05 am

Sorry to give you disturbance PRR

About the Peavey 260s Booster Amplifier that you told to have many years ago

As I've asked here and there without any result

was a Booster amplifier (accept the output of another amp as input)

was a final amplifier (no preamp in it)

or was a standard input amp and a guitar can be plug in ?

as from the single sheet I've find the input is 0.9v RMS for 130W into 2 ohms

and also level control is able to accept a very wide range of input voltages including speaker levels

the name, Booster Amplifier, is confusing me

this days I have a little of fever so till now I can't do test on the amp and my mind is not on max

Many thanks

Kagliostro

Title: Re: A question for PRR about the old 260s he had in past
Post by: PRR on February 02, 2011, 09:50:26 pm

It connects to Line Out on another amp, a preamp, or (turned way down) to Speaker Out on another amp.

It will NOT accept guitar directly and give useful loudness.

You can adapt your iPod to the inputs and get full output.

Do NOT connect a speaker before you test for DC on the output. Put a plug in the Speaker Out jack, measure from ground to plug tip. 1V DC will not hurt a hi-power speaker. Less than 0.1V DC would be normal. 30V DC means the amp is VERY sick, won't play right, and WILL hurt speakers.

Please feel better soon.

Title: Re: A question for PRR about the old 260s he had in past
Post by: kagliostro on February 03, 2011, 03:26:07 am

Thanks PRR

Quote

Do NOT connect a speaker before you test for DC on the output. Put a plug in the Speaker Out jack, measure from ground to plug tip. 1V DC will not hurt a hi-power speaker. Less than 0.1V DC would be normal. 30V DC means the amp is VERY sick, won't play right, and WILL hurt speakers.

I'll do exactly what you say

Quote

or (turned way down) to Speaker Out on another amp

so it is a booster but if I want to put in the input of the 260s the output of a 5W amp I must lower the power ?

If I understand well a dummy load connected to the little amp output must be used to lower the power than I can pick the reduced signal and put it in the input of the 260s ?

so the 260s isn't strictly a booster like those for car radio ???

http://www.quasarelectronics.com/smart-kit/1046-25w-stereo-car-booster-amplifier-tda1515.htm

Kagliostro

Title: Re: A question for PRR about the old 260s he had in past
Post by: kagliostro on February 03, 2011, 11:51:23 am

I got the schematic  :smiley:

the draw was 1972 - revised 1980

do you think I can send it to Doug to be inserted in the Peavey schematic page ?

or it will be still under copyright ?

Thanks

Kagliostro