Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Seduction => Topic started by: denti alligator on July 18, 2015, 01:32:59 PM

Title: loading on Seduction query
Post by: denti alligator on July 18, 2015, 01:32:59 PM

I'm using an Audio Technica 150-MLX cartridge with my Seduction. It sounds great. However, I recently read that there's a slight bulge in the upper frequencies that can be tamed by "by getting the capacitance as low as possible and dropping the impedance from 47k to 33k. "

What would that entail?

Title: Re: loading on Seduction query
Post by: Grainger49 on July 18, 2015, 03:06:50 PM

Sam,

The impedance resistors are mounted on the input RCA jacks.  They are 47.5k Ohms.  Change those to 33k Ohms and that is done.  The Seduction has a pretty low capacitance it self.  PB or PJ might have some suggestions to lower it.

Also, using a low capacitance cable between your table and the Seduction would be the greatest improvement you can make of the total capacitance.  PM me.

Title: Re: loading on Seduction query
Post by: denti alligator on July 19, 2015, 10:47:49 AM

Low capacitance cable. Check.

As for the resistors: what voltage? and what brand?

Title: Re: loading on Seduction query
Post by: Grainger49 on July 19, 2015, 12:08:31 PM

I'm fond of Dale/Vishay RN55 series of resistors.  Power isn't a factor.  The signal is a very low voltage and there is no current drawn.

Title: Re: loading on Seduction query
Post by: denti alligator on July 25, 2015, 12:51:14 PM

So I tried this, and it was no good. There was no taming of the upper frequencies. If anything it heightened them. The sound was thinner, more fragile, whispy even.

So I put the stock resistors back in. Damn, this amp sounds sooooo good!! I can't imagine how the Eros sounds. I am so happy with it.